UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K
ýANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2012
or
oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2015
or

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number: 001-35380
Laredo Petroleum, Holdings, Inc.
(Exact name of registrant as specified in its charter)
Delaware
(State or other jurisdiction of
incorporation or organization)
 
45-3007926
(I.R.S. Employer
Identification No.)
15 W. Sixth Street, Suite 1800900
Tulsa, Oklahoma
(Address of principal executive offices)
 
74119
(Zip code)
(918) 513-4570
(Registrant's telephone number, including area code)
Securities Registered Pursuant to Section 12(b) of the Act:
Title of Each Class Name of Each Exchange On Which Registered
Common Stock, $0.01 par value per share New York Stock Exchange
Securities Registered Pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ý    No o 
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o    No ý
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ý    No o
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  oý 
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act. (Check one):
Large accelerated filer oý
 
Accelerated filer ýo
 
Non-accelerated filer o
 
Smaller reporting company o
    
 (Do not check if a
smaller reporting company)
  
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes o    No ý
Aggregate market value of the voting and non-voting common equity held by non-affiliates was approximately $479.8 million$1.2 billion on June 30, 2012,2015, based on $20.80$12.58 per share, the last reported sales price of the common stock on the New York Stock Exchange on such date.
Number of shares of registrant's common stock outstanding as of March 8, 2013: 129,379,195February 12, 2016: 213,747,873
Documents Incorporated by Reference:
Portions of the registrant's definitive proxy statement for its 20132016 Annual Meeting of Stockholders, which will be filed with the Securities and Exchange Commission within 120 days of December 31, 2012,2015, are incorporated by reference into Part III of this report for the year ended December 31, 2012.2015.





Laredo Petroleum, Holdings, Inc.
Table of Contents
 
 
 Part I 
Item 1.
Item 1A.
Item 1B.
Item 2.
Item 3.
Item 4.
 Part II 
Item 5.
Item 6.
Item 7.
Item 7A.
Item 8.
Item 9.
Item 9A.
Item 9B.
 Part III 
Item 10.
Item 11.
Item 12.
Item 13.
Item 14.
 Part IV 
Item 15.

2



GLOSSARY OF OIL AND NATURAL GAS TERMS
The following terms are used throughout this Annual Report:Report on Form 10-K (this "Annual Report"):
"2D"—Method for collecting, processing and interpreting seismic data in two dimensions.
"3D"—Method for collecting, processing and interpreting seismic data in three dimensions.
"Allocation well"—A horizontal well drilled by an oil and gas producer under two or more leaseholds that are not pooled, under a permit issued by the Texas Railroad Commission.
"Basin"—A large natural depression on the earth's surface in which sediments, generally brought by water, accumulate.
"Bbl" or "barrel"—One stock tank barrel, of 42 U.S. gallons liquid volume, used herein in reference to crude oil, condensate, or natural gas liquids.liquids or water.
"Bcf"—One billion cubic feet of natural gas.
"BOE"—One barrel of oil equivalent, calculated by converting natural gas to oil equivalent barrels at a ratio of six Mcf of natural gas to one Bbl of oil.
"BOE/D"—BOE per day.
"Btu"—British thermal unit, the quantity of heat required to raise the temperature of a one pound mass of water by one degree Fahrenheit.
"Completion"—The process of treating a drilled well followed by the installation of permanent equipment for the production of oil or natural gas, or in the case of a dry hole, the reporting of abandonment to the appropriate agency.
"DD&A"—Depreciation, depletion, amortization and accretion.
"Developed acreage"—The number of acres that are allocated or assignable to productive wells or wells capable of production.
"Development well"—A well drilled within the proved area of an oil or natural gas reservoir to the depth of a stratigraphic horizon known to be productive.
"Dry hole"—A well found to be incapable of producing hydrocarbons in sufficient quantities such that proceeds from the sale of such production exceed production expenses and taxes.
"Earth Model"—An integrated workflow process combining geoscience and engineering data with multivariate statistics.
"Exploratory well"—A well drilled to find a new field or to find a new reservoir in a field previously found to be productive of oil or natural gas in another reservoir.
"Facies"Facies"A lateral change in a stratigraphic rock unit due to variance in the formation's petrophysical attribute(s).
"Field"—An area consisting of a single reservoir or multiple reservoirs all grouped on, or related to, the same individual geological structural feature or stratigraphic condition. The field name refers to the surface area, although it may refer to both the surface and the underground productive formations.
"Formation"—A layer of rock which has distinct characteristics that differsdiffer from nearby rock.
"Fracturing ("Frac")" or "Frac"—The propagation of fractures in a rock layer by a pressurized fluid. This technique is used to release petroleum and natural gas for extraction.
"GAAP"—Generally accepted accounting principles in the United States.
"Gross acres" or "gross wells"—The total acres or wells, as the case may be, in which a working interest is owned.
"HBP"—HeldAcreage that is held by production.
"Horizon"—A term used to denote a surface in or of rock, or a distinctive layer of rock that might be represented by a reflection in seismic data.
"Horizontal drilling"—A drilling technique used in certain formations where a well is drilled vertically to a certain depth and then drilled at a right angle within a specified interval.

3



"Initial Production"The measurement of production from an oil or gas well when first brought on stream. Often stated in terms of production during the first thirty days.
"Liquids"—Describes oil, water, condensate and natural gas liquids.
"MBbl"—One thousand barrels of crude oil, condensate or natural gas liquids.
"MBOE"—One thousand BOE.

3



"MBOE/DMMBOE"—MBOE per day.One million BOE.
"Mcf"—One thousand cubic feet of natural gas.
"MMBtu"—One million British thermal units.
"MMcf"—One million cubic feet of natural gas.
"Natural gas liquidliquids" or "NGL"—Components of natural gas that are separated from the gas state in the form of liquids, which include propane, butanes and ethane, among others.
"Net acres"—The percentage of totalgross acres an owner has out of a particular number of acres, or a specified tract. An owner who has 50% interest in 100 acres owns 50 net acres.
"NYMEX"—The New York Mercantile Exchange.
"Production corridor"—Infrastructure put in place over an extended area, usually several miles, containing multiple pipelines to facilitate the transfer of oil, natural gas and/or water. A specific production corridor may also contain water recycling facilities, artificial gas lift and fuel gas distribution lines.
"Productive well"—A well that is found to be capable of producing hydrocarbons in sufficient quantities such that proceeds from the sale of the production exceed production expenses and taxes.
"Proved developed non-producing reserves ("PDNP")" or "PDNP"—Developed non-producing reserves.
"Proved developed reserves ("PDP")" or "PDP"—Reserves that can be expected to be recovered through existing wells with existing equipment and operating methods.
"Proved reserves"—The estimated quantities of oil, natural gas and natural gas liquids whichthat geological and engineering data demonstrate with reasonable certainty to be commercially recoverable in future years from known reservoirs under existing economic and operating conditions.
"Proved undeveloped reserves ("PUD")" or "PUD"—Proved reserves that are expected to be recovered within five years from new wells on undrilled acreagelocations or from existing wells where a relatively major expenditure is required for recompletion.
"Recompletion"—The process of re-entering an existing wellbore that is either producing or not producing and completing new reservoirs in an attempt to establish or increase existing production.
"Reservoir"—A porous and permeable underground formation containing a natural accumulation of producible oil and/or natural gas that is confined by impermeable rock or water barriers and is separate from other reservoirs.
"Resource play" play"An expansive contiguous geographical area, potentially supporting numerous drilling locations, with prospective crude oil and/or natural gas reserves that has the potential to be developed uniformly with repeatable commercial success due to advancements in horizontal drilling and multi-stage fracturing technologies.
"Residue natural gas"—Natural gas remaining after natural gas liquids extraction.
"Spacing"—The distance between wells producing from the same reservoir. Spacing is often expressed in terms of acres, e.g., 40-acre spacing, and is often established by regulatory agencies.
"Standardized measure"—Discounted future net cash flows estimated by applying year-end prices to the estimated future production of year-end proved reserves. Future cash inflows are reduced by estimated future production and development costs based on period end costs to determine pre-tax cash inflows. Future income taxes, if applicable, are computed by applying the statutory tax rate to the excess of pre-tax cash inflows over our tax basis in the oil and natural gas properties. Future net cash inflows after income taxes are discounted using a 10% annual discount rate.
"Two stream"—Production or reserve volumes of oil and wet natural gas, where the natural gas liquids have not been removed from the natural gas stream and the economic value of the natural gas liquids is included in the wellhead natural gas price.

4



"Three stream"—Production or reserve volumes of oil, natural gas liquids and natural gas, where the natural gas liquids have been removed from the natural gas stream and the economic value of the natural gas liquids is separated from the wellhead natural gas price.
"Undeveloped acreage"—Lease acreage on which wells have not been drilled or completed to a point that would permit the production of commercial quantities of oil and natural gas regardless of whether such acreage contains proved reserves.
"Unit"—The joining of all or substantially all interests in a reservoir or field, rather than a single tract, to provide for development and operation without regard to separate property interests. Also, the area covered by a unitization agreement.
"Wellbore"—The hole drilled by the bit that is equipped for natural gas production on a completed well. Also called well or borehole.
"Wellhead natural gas"—Natural gas produced at or near the well.

4"Wolfberry"—A general industry term that applies to the vertical stratigraphic interval that can include the shallow Spraberry formation to the deeper Woodford formation throughout the Permian Basin.



"Working interest" or "WI"—The right granted to the lessee of a property to explore for and to produce and own natural gas or other minerals. The working interest owners bear the exploration, development and operating costs on either a cash, penalty or carried basis.

5



CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS
Various statements contained in or incorporated by reference into this Annual Report on Form 10-K are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). These forward-looking statements include statements, projections and estimates concerning our operations, performance, business strategy, oil and natural gas reserves, drilling program capital expenditures, liquidity and capital resources, the timing and success of specific projects, outcomes and effects of litigation or other claims and disputes, derivative activities and potential financing. Forward-looking statements are generally accompanied by words such as "estimate," "project," "predict," "believe," "expect," "anticipate," "potential," "could," "may," "will," "foresee," "plan," "goal," "should," "intend," "pursue," "target," "continue," "suggest" or the negative thereof or other variations thereof or other words that convey the uncertainty of future events or outcomes. Forward-looking statements are not guarantees of performance. These statements are based on certain assumptions and analyses made by us in light of our experience and our perception of historical trends, current conditions and expected future developments as well as other factors we believe are appropriate under the circumstances. Among the factors that significantly impact our business and could impact our business in the future are:
the volatility of, and substantial and continued decline in, oil, NGL and natural gas prices;
revisions to our reserve estimates as a result of changes in commodity prices and uncertainties;
impacts to our financial statements as a result of impairment write-downs;
our ability to discover, estimate, develop and replace oil, NGL and natural gas reserves;
uncertainties about the estimates of our oil, NGL and natural gas reserves;
changes in domestic and global production, supply and demand for oil, NGL and natural gas;
the potentially insufficient refining capacity in the U.S. Gulf Coast to refine all of the light sweet crude oil being produced in the United States, which could result in widening price discounts to world crude prices and potential shut-in of production due to lack of sufficient markets;
the ongoing instability and uncertainty in the U.S. and international financial and consumer markets that iscould adversely affectingaffect the liquidity available to us and our customers and is adversely affecting the demand for commodities, including crude oil, NGL and natural gas;
volatilitycapital requirements for our operations and projects;
our ability to maintain the borrowing capacity under our Senior Secured Credit Facility (as defined below) or access other means of oilobtaining capital and natural gasliquidity, especially during periods of sustained low commodity prices;
restrictions contained in our debt agreements, including our Senior Secured Credit Facility and the possible introduction of indentures governing our Senior Unsecured Notes (as defined below), as well as debt that could be incurred in the future;
our ability to generate sufficient cash to service our indebtedness, fund our capital requirements and generate future profits;
regulations that prohibit or restrict our ability to apply hydraulic fracturing to our oil and natural gas wells and to access and dispose of water used in these operations;
legislation or regulations that prohibit or restrict our ability to drill new allocation wells;
discovery, estimation, development and replacement of oil and natural gas reserves,our ability to execute our strategies, including but not limited to our expectations that estimates of our proved reserves will increase;hedging strategies;
competition in the oil and natural gas industry;
availabilitychanges in the regulatory environment and costs of drilling and production equipment, labor, and oil and natural gas processing and other services;changes in international, legal, political, administrative or economic conditions;
drilling and operating risks, including risks related to hydraulic fracturing activities;
risks related to the geographic concentration of our assets;
changes in domesticthe availability and global demand forcosts of drilling and production equipment, labor and oil and natural gas;gas processing and other services;
the availability of sufficient pipeline and transportation facilities and gathering and processing capacity;
uncertainties about the estimates of our oil and natural gas reserves;
changes in the regulatory environment and changes in international, legal, political, administrative or economic conditions;
successful results from our identified drilling locations;
our ability to execute our strategies, including but not limited to our hedging strategies;comply with federal, state and local regulatory requirements; and
our ability to recruit and retain the qualified personnel necessary to operate our business;
our ability to comply with federal, state and local regulatory requirements;
evolving industry standards and adverse changes in global economic, political and other conditions;
restrictions contained in our debt agreements, including our senior secured credit facility and the indentures governing our senior unsecured notes, as well as debt that could be incurred in the future;
our ability to access additional borrowing capacity under our senior secured credit facility or other means of providing liquidity; and
our ability to generate sufficient cash to service our indebtedness and to generate future profits.business.
These forward-looking statements involve a number of risks and uncertainties that could cause actual results to differ materially from those suggested by the forward-looking statements. Forward-looking statements should therefore be considered

6



in light of various factors, including those set forth in this Annual Report on Form 10-K under "Item 1A. Risk Factors," in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" and elsewhere in this Annual Report on Form 10-K.Report. In light of such risks and uncertainties, we caution you not to place undue reliance on these forward-looking statements. These forward-looking statements speak only as of the date of this Annual Report, or if earlier, as of the date they were made. We do not intend to, and disclaim any obligation to, update or revise any forward-looking statements unless required by securities law.

67



Part I
On December 31, 2013, Laredo Petroleum Holdings, Inc., a Delaware corporation, completed an internal corporate reorganization and changed its name to Laredo Petroleum, Inc. See "Item 1. Business - Corporate history and structure" for more information. On October 24, 2014, Laredo formed Garden City Minerals, LLC, a Delaware limited liability company ("GCM"), as a wholly-owned subsidiary. Unless the context otherwise requires, references in this Annual Report to "Laredo," the "Company," "we," "our," "us," or similar terms refer to Laredo Petroleum Holdings, Inc. and its subsidiaries, including Laredo Petroleum, Inc., a Delaware corporation, before the completion of our internal corporate reorganization and to Laredo Petroleum, Inc. and its subsidiaries, Laredo Midstream Services, LLC ("LMS") and GCM, as of the completion of our internal corporate reorganization and thereafter, as applicable.
In this Annual Report, on Form 10-K, the consolidated and historical financial information, operational data and reserve information for Laredo and our acquired subsidiary, Broad Oak Energy, Inc., a Delaware corporation ("Broad Oak"), a Delaware corporation, present the assets and liabilities of Laredo Petroleum Holdings, Inc., a Delaware corporation, and its subsidiaries and Broad Oak at historical carrying values and their operations as if they were consolidated for all periods presented prior to July 1, 2011. Although the financial and other information is reported on a consolidated basis, such presentation is not necessarily indicative of the results that would have been obtained if Laredo had owned and operated Broad Oak from its inception. See Notes A
Except where the context indicates otherwise, amounts, numbers, dollars and B in our audited consolidated financial statements included elsewherepercentages presented in this Annual Report on Form 10-K for more information.are rounded and therefore approximate.
Item 1. Business
Overview
Laredo Petroleum Holdings, Inc. (together with its consolidated subsidiaries, "Laredo," "we," "us," "our" or "Company") is an independent energy company focused on the acquisition, exploration development and acquisitiondevelopment of oil and natural gas properties, and the transportation of oil and natural gas from such properties, primarily in the Permian and Mid-Continent regions of the United States.Basin in West Texas. The oil and liquids-rich Permian Basin in West Texas and the liquids-rich Anadarko Granite Wash in the Texas Panhandle and Western Oklahoma areis characterized by multiple target horizons, extensive production histories, long-lived reserves, high drilling success rates and high initial production rates. We operate and analyze our results of operations through our two principal business segments:
Exploration and production of oil and natural gas properties - conducted principally by Laredo Petroleum, Inc. through the exploration and development of our acreage in the Permian Basin. As of December 31, 2012,2015, we had assembled 203,549135,408 net acres in the Permian Basin and 37,322 net acres in the Anadarko Granite Wash and had total proved reserves, presented on a two-streamthree-stream basis, of 188,632125,698 MBOE.
Midstream and marketing - conducted principally by our wholly-owned subsidiary, LMS. LMS buys, sells, gathers and transports oil, natural gas and water primarily for the account of Laredo. In addition, LMS owns a 49% interest in Medallion Gathering & Processing, LLC ("Medallion"), which, upon completion of current projects, will own and operate 500 miles of pipeline in the Permian Basin. This system gathered, transported and delivered 69,000 Bbls per day in the fourth quarter of 2015.
Financial information and other disclosures relating to our business segments are provided in the notes to our consolidated financial statements included elsewhere in this Annual Report (see Note 17 to our consolidated financial statements included elsewhere in this Annual Report).
2015 segment operation highlights
Exploration and production
Produced a Company record 16.3 MMBOE in 2015, an increase of 18% from 2014
Received $255.3 million of cash settlements on commodity derivatives that matured during 2015
Reduced general and administrative ("G&A") expenses to $5.53 per BOE in 2015, a decrease of 28% from 2014
Reduced capital expenditures in exploration and development activities and other fixed assets to $530.2 million in 2015, a decrease of 60% from 2014, to more appropriately align capital with expected cash flows
Utilized the Company's proprietary Earth Model to design the drilling plan for the majority of horizontal wells drilled in 2015

8



Midstream and marketing
Gathered 4.6 million barrels of crude oil, an increase of 190% from 2014
Gathered 28.5 Bcf of natural gas, an increase of 55% from 2014
Supplied 12.9 Bcf of natural gas lift supply, an increase of 480% from 2014
Commenced commercial operations of the Medallion crude oil gathering system, in which LMS owns a 49% interest, growing Medallion transported volumes of oil to 69,000 Bbls per day in the fourth quarter and 15.2 million barrels of crude oil for the year
Commenced operations of our water treatment facility in the second half of the year that provided 1.2 million barrels of recycled water for completion operations in the second half of the 2015 and 800,000 barrels during the last seven weeks of the year
Invested capital of $159.6 million in pipelines and related infrastructure held by LMS, including investments in the Medallion pipeline system
Our core assets
Exploration and production
The Permian Basin is comprised of several distinct geological provinces, including the Midland Basin to the east, the Delaware Basin to the west and the Central Platform in the middle. Our primary explorationdevelopment and production fairway in the Permian Basin is centeredlocated on the easterneast side of the basin approximatelyMidland Basin, 35 miles east of Midland, TexasTexas. Our acreage is largely contiguous in the neighboring counties of Howard, Glasscock, Reagan, Sterling and extends approximately 20 miles wide (east/west) and approximately 85 miles long (north/south) in Glasscock, Howard, Reagan and Sterling counties, and is referredIrion, Texas. We refer to this acreage block in this Annual Report on Form 10-K as theour "Permian-Garden City" area. As of December 31, 2012,2015, we held approximately 145,800135,408 net acres in more than 300the Permian Basin, with 131,763 of the net acres held in 250 sections in the Permian-Garden City area, with an average working interest of approximately 92%95% in all Laredo-operated producing wells.
Subsequent to December 31, 2012, we announced we are exploring options to potentially divest certain assets located outside the Permian Basin. These assets consist of our Anadarko Granite Wash properties (approximately 11% of our estimated net proved reserves as of year-end), as well as properties owned in the Central Texas Panhandle (Hansford, Hutchinson, Ochiltree and Roberts counties in Texas) and the Eastern Anadarko Basin (Caddo, Grady and Comanche counties in Oklahoma) (collectively, approximately 4% of our estimated net proved reserves at such time). There can be no assurance that the divestiture of any assets will be completed.
We believe our acreage in the Permian-Garden City area is a resource play for the Wolfberry interval, comprised of multiple producing formations includingthat partially make up the initialvertical Wolfberry interval. To date, we have focused the majority of our development activities in four identified shale zones targetedtargets for horizontal drilling (Upper, Middle and Lower Wolfcamp and Cline shales).formations), although we have established the existence of additional producing zones, including the Spraberry and Canyon. From our inception in 2006 through December 31, 2012,2015, we have drilled and completed 60(i.e., the particular well is flowing) 230 horizontal wells in these initial four identified target zones and more than 725967 vertical wells in the Wolfberry interval. We have completed 34 horizontal Cline wells, 2397 horizontal Upper Wolfcamp wells, two48 horizontal Middle Wolfcamp wells, and one30 horizontal Lower Wolfcamp well. Our recentwells and 55 horizontal Cline wells.
Beginning in mid-2012, we started focusing our horizontal activity has moved towardon drilling longer laterals (typically approximately 7,000 to 7,500 feet). Where our contiguous acreage position allows, we have now evolved to drilling 10,000-foot laterals.
Due to the sharp decline in oil, NGL and increased frac density (typically 25natural gas prices that began in the second half of 2014 and continued through 2015 and the beginning of 2016, we reduced our 2016 planned capital program. In connection with the reduced capital program, we have approved a capital budget of $345 million for 2016. Of this budget, $330 million is allocated to 28 stages)our exploration and production segment and $15 million is allocated to our midstream and marketing segment. Substantially all of the planned capital budget is anticipated to be invested in the Permian-Garden City area for both of our segments. Our near-term goal is to concentrate our drilling activities along our previously established production corridors that have the infrastructure in place to allow us the flexibility to most efficiently and economically drill wells at an attractive rate of return, even during the current period of depressed commodity prices. We will also continue to seek cost saving measures to more efficiently deploy our capital, including decreasing our unit lease operating and G&A expenses. We anticipate that in conjunction with the continued downward trend in commodity prices, capital and service costs may continue to decline as well, although there can be no assurance of any such decline.
In connection with our reduced capital budget, we are decreasing the number of horizontal drilling rigs and eliminating vertical drilling rigs working our properties in the Permian-Garden City area as we continuedo not believe that any vertical drilling is currently necessary under our leases. On December 31, 2015, we had a total of three operated drilling rigs drilling horizontal wells. Our current drilling schedule anticipates that we will average 2.5 horizontal rigs and no vertical rigs in 2016.
The timing of drilling our potential locations is influenced by several factors, including commodity prices, capital requirements and availability, the optimization of our completion techniques. Because we drilled a mixture of long (characterized as greater than 6,000 feet) and short laterals in our 2012 horizontal drilling programs and tested various distances between frac stages, we normalized the reporting of production results for these wells by analyzing the production per frac stage presented on a two-stream basis. The average daily rate per stage for the peak 30-day production period for the 20 horizontal Upper Wolfcamp wells that were drilled and completed in 2012 was 28 BOE/D per frac stage. The average daily rate per stage for the peak 30-day production period for the 12 horizontal Cline wells that were drilled and completed in 2012, was 29 BOE/D per frac stage. The same measurement of peak 30-day production for the two Middle Wolfcamp horizontal wells averaged 34 BOE/D per frac stageTexas Railroad Commission ("RRC") well-spacing requirements and the one Lower Wolfcamp horizontal well averaged 27 BOE/D per frac stage.
We believe we have proved the commercial production viability in all four horizontal zones as of December 31, 2012, including the economic horizontal development potentialcontinuation of the Cline and Upper Wolfcamp shales on approximately 70,000 net acres and 60,000 net acres, respectively, ofpositive results from our Permian-Garden City acreage, as well as our entire acreage position for deep vertical development. We further believe that additionalongoing development drilling results through February 28, 2013, coupled with our technical data and well performance, have enabled us to confirm the development potential of additional acreage in all four zones. As a result, we believe we have confirmed the horizontal development potential for the equivalent of 360,000 net acres in the four zones which includes 80,000 net acres in the Upper Wolfcamp, 80,000 net acres in the Middle Wolfcamp, 73,000 net acres inprogram.

79



the Lower Wolfcamp and 127,000 net acres in the Cline shale as of February 28, 2013.
Going forward, we plan to continue drilling and collecting technical data across our Permian-Garden City acreage, as reflected in our 2013 capital drilling budget allocation. As a result, weWe expect our Permian-Garden City acreage willto continue to be the primary driver of our reserves, production and cash flow growth for the foreseeable future.
Our Anadarko Granite Wash play extends within a large area in the western part of the Anadarko Basin in Hemphill County, Texas and Roger Mills County, Oklahoma. Currently, we are drilling horizontal opportunities targeting the liquids-rich natural gas of the Granite Wash formation. The Granite Wash is a conventional play requiring geologic and engineering expertise and precise drilling techniques to ensure maximum production per well.
Laredo was founded in October 2006 by our Chairman and Chief Executive Officer Randy A. Foutch, who was later joined by other members of our management team, many of whom have worked together for a decade or more. Prior to founding Laredo, Mr. Foutch and members of our management team successfully formed, built and sold three private oil and natural gas companies, all of which were focused on the same general areas of the Permian and Mid-Continent regions in which Laredo currently operates. All of these companies executed the same fundamental business strategy employed by Laredo in the same general operating areas and created significant economic growth in reserves, production and cash flow.
In December 2011, we completed a Corporate Reorganization and IPO. See "—Corporate history and structure."
Since our inception, we have rapidly grownestablished and realized our reserves, production and cash flow primarily through both our drilling program andcoupled with select strategic acquisitions, including our July 2011 acquisition of Broad Oak. Our net proved reserves were estimated at 188,632125,698 MBOE on a three-stream basis as of December 31, 2012,2015, of which 43% were80% are classified as proved developed reserves and 52%42% are attributed to oil reserves. OurFor all periods prior to January 1, 2015, our reserves and production arewere reported in two streams: crude oil and liquids-rich natural gas. TheThis means the economic value of the natural gas liquids in our natural gas iswas included in the wellhead natural gas price.price and total volumes on a BOE-basis are lower. Beginning on January 1, 2015, we started reporting our production volumes on a three-stream basis, which separately reports NGL from crude oil and natural gas. In this Annual Report, on Form 10-K, the information presented with respect to our estimated proved reserves has been prepared by Ryder Scott Company, L.P. ("Ryder Scott"), our independent reserve engineers, in accordance with the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to the periods presented.
The following table summarizes our total estimated net proved reserves presented on a two-streamthree-stream basis, net acreage and producing wells as of December 31, 2012,2015, and average daily production presented on a two-streamthree-stream basis for the year ended December 31, 2012.2015. Based on estimates in the report prepared by Ryder Scott, we operateoperated wells that represent approximately 95%99% of the economic value of our proved developed oil, NGL and natural gas reserves as of December 31, 2012.2015.
  At December 31, 2012 
Year ended
December 31, 2012
average daily
production(3) (BOE/D)
  
Estimated net
proved reserves(1)(2)
   
Producing
wells
 
  MBOE 
% of
total reserves
 % Oil 
Net
acreage
 Gross Net 
Permian 160,028
 85% 60% 203,549
 869
 799
 20,618
Anadarko Granite Wash 20,172
 11% 6% 37,322
 191
 142
 7,875
Other Areas(4)
 8,416
 4% 4% 67,223
 349
 176
 2,341
New Ventures(5)
 16
 % 100% 113,343
 2
 2
 40
Total 188,632
 100% 52% 421,437
 1,411
 1,119
 30,874
  As of December 31, 2015 Year ended
December 31, 2015
average daily
production (BOE/D)
  
Estimated net
proved reserves(1)
   
Producing
wells
 
  MBOE 
% of
total reserves
 % Oil 
Net
acreage
 Gross Net 
Permian Basin 125,698
 100% 42% 135,408
 1,195
 1,109
 44,782
Other properties 
 % % 17,612
 
 
 
Total 125,698
 100% 42% 153,020
 1,195
 1,109
 44,782

(1)See "—Our estimated netoperations—Estimated proved reserves were prepared by Ryder Scott, and presented on a two-stream basis as of December 31, 2012 and are based on reference oil and natural gas prices. In accordance with applicable rulesreserves" for discussion of the SEC, the reference oil and natural gas prices are derived from the average trailing 12-month index prices (calculated as the unweighted arithmetic average of the first-day-of-the-month price for each month within the applicable 12-month period), held constant throughout the life of the properties. The reference prices were $91.21 per Bbl for oil and $2.63 per MMBtu for natural gas for the 12 months ended December 31, 2012.
(2)Becauseutilized to estimate our reserves are reported in two streams, the economic value of the natural gas liquids in our natural gas is included in the wellhead natural gas price. The reference prices referred to above that were utilized in the December 31, 2012 reserve report prepared by Ryder Scott are adjusted for natural gas liquids content, quality, transportation fees, geographical differentials, marketing bonuses or deductions and other factors affecting the price received at the wellhead. The adjusted reference prices were $5.97 per Mcf in the Permian area and $3.21 per Mcf in the Anadarko Granite Wash area.
(3)Our average daily production volumes are reported in two streams: crude oil and liquids-rich natural gas. The economic value of the natural gas liquids in our natural gas is included in the wellhead natural gas price.

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(4)Includes our acreage in the gas prone Eastern Anadarko (22,602 net acres) and Central Texas Panhandle (44,621 net acres).
(5)Estimated net proved reserves of 16 MBOE are in 88,728 net acres in the Dalhart Basin, which is an exploration effort targeting liquids-rich formations that are less than 7,000 feet in depth and 24,615 net acres in other New Ventures. See "—New ventures."reserves.
Our net average daily production for the year ended December 31, 20122015 was 30,87444,782 BOE/D, 42%47% of which was oil, and 58%26% of which was primarily liquids-richNGLs and 27% of which was natural gas. Our drilling activity
As discussed previously in this Annual Report, during 2015 commodity prices for crude oil, NGL and natural gas experienced sharp declines, and this downward trend has accelerated further into the first quarter of 2016, with crude oil prices reaching a twelve-year low in February 2016. We have significantly reduced our capital budget for 2016. In addition, we have purposely significantly reduced the portion of our reserves that have historically been and is expectedcategorized as "proved undeveloped" or "PUD." We have adjusted our long-range five-year SEC PUD bookings methodology because given the current economic price environment, coupled with (i) our efforts to continue to be focused on oil opportunitiesdevelop our acreage in the Permian Basin.most efficient manner possible and determine which potential locations will be most profitable and (ii) the uncertain effect that such environment will have on the industry’s access to the capital markets, we believe that we can optimize the value for our shareholders by maintaining greater flexibility in choosing the specific drilling locations that may yield the greatest rates of return.
In 2012, we increasedAs our horizontal drilling activities in bothto date have indicated, the Permian Basin and the Anadarko Granite Wash. As of December 31, 2012, we had completed 60 gross horizontal Wolfcamp and Cline shale wells in the Permian and 25 gross horizontal Granite Wash wells. The Permian Basin horizontal drilling program comprises an extensive, multi-year, multiple-zone inventory of exploratory and development opportunities.
Approximately 89%majority of our planned drilling capital for 2013acreage represents a resource play. In the near-term, our goal is budgeted to be invested indrill those locations that we anticipate have the Permian Basin. We anticipatepotential to provide the greatest economic return and enhance shareholder value, and we have determined that the most efficient way to accomplish this is to maintain the flexibility to choose those locations based upon our continuing insight as we drill and collect data across our acreage, regardless of SEC reserve-booking status. Reducing our future PUD commitments provides us the most flexibility to maximize our rate of return at prevailing conditions and minimize the requirement to drill wells previously assigned under very different circumstances as specific PUD locations. Accordingly, we have reduced our booked PUD locations to those we have reasonable certainty to believe that we will continuedevelop in at least a two-year time horizon while maintaining the flexibility to drill deep vertical wells for purposes of further delineatingadd new PUD locations and convert other locations to proved developed reserves as our Permian Basin acreageplans deem appropriate and holding all desired zones on such acreage. We are increasingly allocating a greater percentage of both capital and human resources towards our horizontal drilling activity, which generally produces even more attractive economics than our vertical program.opportunistic.
We maintainhave built an extensive proprietary technical database that includes 398 in-house, core-calibrated petrophysical logs, 992 square miles of 3D seismic, 44 microseismic surveys, more than 1,090 open and cased-hole logging suites, including 133 dipole sonic logs, 2,866 feet of proprietary whole cores in 13 wells, 859 sidewall cores, 39 single-zone tests and 42 production logs. Our strategic interest in assembling a financial profile that provides operational flexibility. At December 31, 2012, we had approximately $660 million available for borrowingsrich database is directed at efficiently gaining a knowledge base on our senior secured credit facility and total debt of approximately $1.2 billion, of which $165 million was outstanding under our senior secured credit facility. Our total debt, less available cash on the balance sheet, was approximately 2.6 times our Adjusted EBITDA (a non-GAAP financial measure, see "Selected Historical Financial Data—Non-GAAP financial measures and reconciliations") for the year ended December 31, 2012. We believe that our operating cash flow and the aforementioned liquidity sources provide us with the capability to implement our planned exploration and development activities as well as the ability to accelerate our capital program, if deemed appropriate. We use derivative financial instruments to reduce exposure to fluctuations in the prices of oil and natural gas. By removing a significant portion of the price volatility associated with future production, we expect to mitigate, but not eliminate, the potential effects of variability in cash flows from operations due to fluctuations in commodity prices.
At December 31, 2012, we had a total of 14 operated drilling rigs working. Ten of those rigs were working on our propertiesresource play in the Permian-Garden City area consisting of six rigs drilling vertical wells and four rigs drilling horizontal wells. Three rigs were working on our properties inmaximizing value during the Anadarko Granite Wash, all drilling horizontal wells. Additionally, one rig was drilling an exploratory well in our Permian-China Grove area, which is described below.
We have assembled a multi-year inventory offield development drilling and exploitation projects as a result of our early acquisition of technical data, early establishment of significant concentrated acreage positions and successful exploratory drilling. Our drilling programs are focused primarily on oil opportunities in the Permian Basin.
We carefully assess and monitor many factors in our drilling and exploration projects. Our drilling activities in areas containing extensive historical industry activity have enabled us to determine whether a prospective reservoir underlies our acreage position, and whether it can be defined both vertically and horizontally. We use a number of proven mapping techniques to understand the physical extent of the targeted reservoir. This includes 2D and 3D seismic data, as well as Laredo-owned and historical public well databases (which in the Permian Basin may extend back more than 80 years and in the Anadarko Basin approximately 50 years). We also utilize our laboratory and field derived data from whole cores, sidewall cores, well cuttings, mudlogs and open-hole well logs to understand the petrophysics of the rock characteristics prior to the commencement of any completion operations. Finally, after defining the reservoir, our engineers utilize their technical expertise to develop completion programs that we believe will maximize the amount of hydrocarbons that can be economically recovered. As more wells are completed in the targeted reservoir and additional data becomes available, the process is further refined. Based on these and other factors, we consider our acreage to be "de-risked" (i.e., having reduced the risk and uncertainty associated therewith) when we believe we have established the ability to commercially produce from a certain area.
In the Permian-Garden City area, the vertical Wolfberry interval, comprised of multiple producing formations, including the Wolfcamp and Cline shale formations targeted for horizontal drilling in four zones (Upper, Middle and Lower Wolfcamp and Cline shales), is considered a resource play. While the vertical component of the drilling program will continue, our emphasis is now centered on bringing forward the upside potential in the Wolfcamp and Cline shales in our Permian-Garden City acreage through horizontal drilling. As resource plays, the mapping of the gross interval for each of the producing formations underlying a majority of our acreage position is the primary factor in identifying our potential drilling locations. In the general region and immediately around our acreage position, publicly available well data exists from a significant numberphase.

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A key component of our reservoir characterization process is internally referred to as the "Earth Model," which represents a proprietary integrated workflow combining geoscience and engineering data with multivariate statistics. The workflow employed in the Earth Model process differs from the more conventional earth science/engineering approach in that the Earth Model involves parallel workflows, multivariate statistics and significant input from multiple disciplines. The goal of the Earth Model is to develop a predictive three-dimensional model that can forecast production rates through associating empirical subsurface data with proved methods.
We have been developing the Earth Model process over a period of four years, covering an area where calibrated pre-stack inversion attributes have been extensively developed and tested to determine fundamental controls on reservoir performance. The four major components of the Earth Model are (i) geophysical data (i.e., 3D seismic and micro-seismic surveys), (ii) logs (i.e., conventional open-hole, dipole sonic, and in-house core calibrated petrophysical logs), (iii) cores (both whole and sidewall) and (iv) production history, production logs and single-zone tests. By integrating data that represent mechanical properties, natural fractures, reservoir properties and lithology within a multivariate statistical model, we were generally able to develop a relationship to production with correlation coefficients for our 2016 targeted zones.
We consider the Earth Model a potentially significant tool in planning development wells in complex geology by optimizing landing points, lateral lengths and geo-steering targets while integrating horizontal and vertical spacing considerations for well laterals.
We estimate that more than 90% of our horizontal wells (in excessto be drilled in 2016 will utilize at least some aspects of several thousandthe Earth Model, demonstrating evolution from a calibrated backward-looking model into a primary tool for development and delineation well planning. If our preliminary applications of the WolfcampEarth Model are replicated in forward-looking well planning, we anticipate that the Earth Model may positively impact our ability to increase initial production rates and Cline shales alone)estimated ultimate recoveries.
Midstream and marketing
We are actively involved in seeking midstream solutions for our oil, NGL and natural gas production. Capitalizing on our large acreage blocks, we have built crude oil, natural gas and/or water systems in four production corridors on our Permian-Garden City acreage. These production corridors provide high-pressure centralized natural gas lift systems and crude oil and natural gas gathering, with certain corridors also capable of water delivery, takeaway and recycling (including 77 miles of fresh, produced and recycled water lines). In 2015, we commenced operations at our water treatment facility, which is capable of recycling more than 28,000 Bbls of water per day and has a storage capacity of 1.4 million Bbls. We believe the fact that allowsthese production corridors and associated facilities and infrastructure are already in place will enable us to better definemore economically undertake our anticipated 2016 drilling program.
Additionally, we have built and maintain more than 40 miles of crude oil gathering pipelines to connect Laredo-operated wells in our Permian-Garden City asset, providing a safer and more economic transportation alternative than trucking. We have also installed and maintain 175 miles of natural gas gathering pipelines across our Permian-Garden City acreage, providing us with takeaway optionality that enables us to maintain lower operating pressures and more consistent well performance.
LMS is a 49% owner in the Medallion crude oil gathering system which commenced operations in March of 2015. Upon completion of current projects, the system will have 500 miles of laid pipeline in the following counties in Texas: Mitchell, Howard, Martin, Midland, Glasscock, Reagan, Upton, Crane and Crockett. During the portion of the year in 2015 that it was operational, the system transported 15.2 million Bbls of crude oil. See Notes 15 and 16.a to our consolidated financial statements included elsewhere in this Annual Report for a discussion of Medallion.
Our midstream and marketing activities continue to focus on achieving increased efficiencies and cost reductions for (i) the transportation and marketing of our oil and natural gas through the utilization of our oil and natural gas gathering systems to provide access to multiple markets and reduce the potential areal extentfor production shut-ins caused by downstream capacity issues and (ii) the handling of eachfresh, recycled and produced water.
We market the majority of production from properties we operate for both our account and the account of the producing intervals. In additionother working interest owners in our operated properties. We sell substantially all of our production under contracts ranging from one month to several years, all at market prices. We normally sell production to a relatively limited number of customers, as is customary in the publicly available well data,exploration, development and production business; however, we believe that our customer diversification affords us optionality in our sales destination. We have also incorporated our internally generated information from cores, 3D seismic, open-hole logging, production and reservoir engineering data into defining the extent of the targeted formations, the ability of such formations to produce commercial quantities of hydrocarbons, and the viability of the potential locations. We are refining a development plan forcommitted a portion of our Permian-GardenPermian crude oil production under firm

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transportation agreements, including with Medallion, which agreements will enhance our ability to move our crude oil out of the Permian Basin and give us access to potentially more favorable Gulf Coast pricing.
As of December 31, 2015, we were committed to deliver for sale or transportation the following fixed quantities of production under certain contractual arrangements that specify the delivery of a fixed and determinable quantity.
  Total 2016 2017 2018 2019 and after
Crude oil (MBbl)          
Sales commitments 24,340
 10,304
 8,030
 6,006
 
Transportation commitments:          
Field 100,995
 9,736
 13,106
 12,410
 65,743
To U.S. gulf coast 33,450
 3,660
 3,650
 3,650
 22,490
Natural gas (MMcf)          
Sales commitments 66,971
 5,220
 5,966
 7,373
 48,412
Total commitments (MBOE)(1)
 169,947
 24,570
 25,780
 23,295
 96,302

(1)BOE equivalents are calculated using a conversion rate of six Mcf per one Bbl.
We have firm field transportation agreements that enable us or the purchasers of our oil production to move oil from our production area to the major market hubs of Midland, Texas and Colorado City, area in orderTexas. We also have a firm transportation agreement to minimize costs and maximize recoveries andmove oil from Colorado City, Texas to the U.S. Gulf Coast. We expect to begin its implementationfulfill these firm transportation commitments primarily by utilizing the volumes under our firm sales commitments.
Our production has been equivalent or greater than our delivery commitments during the three most recent years, and we expect such production will continue to exceed our future commitments. However, in 2013 commencing with pilot programs.certain instances, we have used spot market purchases to meet commitments in certain locations or due to favorable pricing. We anticipate continuing this practice in the future. Also, if our production is not sufficient to satisfy our delivery commitments, we can and may use spot market purchases to fulfill the commitments.
CapitalizingIn the current market environment, we believe that we could sell our production to numerous companies so that the loss of any one of our major purchasers would not have a material adverse effect on our extensive technical database developed infinancial condition and results of operations solely by reason of such loss. For information regarding each of our customers that accounted for 10% or more of our oil, NGL and natural gas revenues during the Permian-Garden City area, we are currently testing a Cline shale exploratory concept onlast three calendar years, see Note 11 to our Permian-China Grove acreage, located primarily in Mitchell county in Texas, which is referred toconsolidated financial statements included elsewhere in this Annual Report on Form 10-K as the "Permian-China Grove" area.
In the Anadarko Basin, the Granite Wash horizontal potential locations have been identified through a seriesReport. See "Item 1A. Risk Factors—Risks related to our business—The inability of detailed maps which we have internally generated based on an extensive geological and engineering database. Information incorporated into this process includes our own proprietary information as well as industry data available in the public domain. Specifically, open-hole logging data, production statistics from operated and non-operated wells and petrophysical data describing the reservoir rock as derived from cores we recovered duringsignificant customers to meet their obligations to us may materially adversely affect our drilling operations have been captured and worked.
In both the Permian and Anadarko drilling programs, the timing of drilling the potential locations is influenced by several factors, including commodity prices, capital requirements, the Texas Railroad Commission ("RRC") well-spacing requirements and the continuation of the positive results from our ongoing development drilling program.financial results."
Corporate history and structure
Laredo Petroleum, Inc. was founded in October 2006 by our Chairman and Chief Executive Officer, Randy Foutch. In 2007, Laredo Petroleum, LLC was formed pursuant to the laws of the State of Delaware by affiliates of Warburg Pincus LLC ("Warburg Pincus"), our institutional investor, and the management of Laredo Petroleum, Inc., to acquire Laredo Petroleum, Inc. and through such subsidiary, to develop and operate oil and natural gas properties in the Permian and Mid-Continent regions of the United States. In August 2011, we incorporated Laredo Petroleum Holdings, Inc. was incorporated in August 2011("Holdings"), pursuant to the laws of the State of Delaware for purposes of a corporate reorganization and initial public offering ("IPO"). The corporate reorganization, pursuant to which Laredo Petroleum, LLC was merged with and into Laredo Petroleum Holdings, Inc., with Laredo Petroleum Holdings Inc. surviving the merger, was completed on December 19, 2011 (the "Corporate Reorganization"). Laredo Petroleum, LLC was formed in 2007 pursuant to the laws of the State of Delaware by affiliates of Warburg Pincus LLC ("Warburg Pincus"), our institutional investor, and the management of Laredo Petroleum, Inc., which was founded in 2006 by Randy A. Foutch, our Chairman and Chief Executive Officer, to acquire, develop and operate oil and natural gas properties in the Permian and Mid-Continent regions of the United States. In the Corporate Reorganization, all of the outstanding preferred equity interests and certain of the incentive equity interests in Laredo Petroleum, LLC were exchanged for shares of common stock of Laredo PetroleumHoldings. Holdings Inc. Laredo Petroleum Holdings, Inc. completed an IPO of its common stock on December 20, 2011. Our business continues to be conducted through Laredo Petroleum, Inc., a wholly-owned subsidiary of Laredo Petroleum Holdings, Inc., and through Laredo Petroleum Inc.'s subsidiaries. As of December 31, 2012,2015, Warburg Pincus owned approximately 68%41.0% of our common stock. The Corporate Reorganization and IPO are discussed in Note A in our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K.
Laredo Petroleum, Inc. is also the borrower under our senior secured credit facility as well as the issuer of our $550 million 9 1/2% senior unsecured notes due 2019 (the "2019 senior unsecured notes") issued in January and October 2011 and our $500 million 7 3/8% senior unsecured notes due 2022 issued in April 2012 (the "2022 senior unsecured notes"). We refer to the 2019 senior unsecured notes and the 2022 senior unsecured notes collectively as the "senior unsecured notes." Laredo Petroleum Holdings, Inc. and all of its subsidiaries (other than Laredo Petroleum, Inc.) are guarantors of the obligations under our senior secured credit facility and senior unsecured notes.
On July 1, 2011, we completed the acquisition of Broad Oak, which became a wholly-owned subsidiary of Laredo Petroleum, Inc. Broad Oak was formed in 2006 with financial support from its management and Warburg Pincus. On July 19, 2011, we changed the name of Broad Oak to Laredo Petroleum—Dallas,Petroleum-Dallas, Inc.

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On August 1, 2013, we completed the sale of our assets in the Anadarko Basin in the Texas Panhandle and Western Oklahoma (the "Anadarko Basin Sale"), which represented 15% of our proved reserve volumes as of December 31, 2012.
Effective December 31, 2013, we completed an internal corporate reorganization, which simplified our corporate structure. Our two former subsidiaries, Laredo Petroleum Texas, LLC and Laredo Petroleum-Dallas, Inc. were merged with and into Laredo Petroleum, Inc. The then sole remaining wholly-owned subsidiary of Laredo Petroleum, Inc., formerly known as Laredo Gas Services, LLC, changed its name to Laredo Midstream Services, LLC. Laredo Petroleum, Inc., a wholly-owned subsidiary of Holdings, merged with and into Holdings with Holdings surviving and changing its name to "Laredo Petroleum, Inc." We refer to the events described in this paragraph collectively as the "Internal Consolidation."
On October 24, 2014, GCM, a wholly-owned subsidiary of Laredo Petroleum, Inc., was formed primarily to hold certain mineral interests owned by the Company. The creation of GCM, the Corporate Reorganization, the IPO and the Internal Consolidation are discussed in Note 1 to our consolidated financial statements included elsewhere in this Annual Report.
Laredo Petroleum, Inc. is the borrower under our Fourth Amended and Restated Senior Secured Credit Facility (as amended, the "Senior Secured Credit Facility"), as well as the issuer of our $350 million of 6 1/4% senior unsecured notes due 2023 (the "March 2023 Notes"), our $500 million of 7 3/8% senior unsecured notes due 2022 (the "May 2022 Notes") and our $450 million of 5 5/8% senior unsecured notes due 2022 (the "January 2022 Notes"). We refer to the March 2023 Notes, the May 2022 Notes and the January 2022 Notes collectively as the "Senior Unsecured Notes." Our subsidiaries, LMS and GCM, are guarantors of the obligations under our Senior Secured Credit Facility and Senior Unsecured Notes. On April 6, 2015 (the "Redemption Date"), we used the proceeds of the March 2023 Notes offering to fund a portion of the complete redemption of the Company’s then outstanding $550 million of 9 1/2% senior unsecured notes due 2019 (the "January 2019 Notes") at a redemption price of 104.75% of the principal amount of such notes, plus accrued and unpaid interest.
Our business strategy
Our goal is to enhance stockholdershareholder value by economicallyprotecting and potentially growing our reserves, production and cash flow by executing the following strategy:
Grow reserves,Exploration and production
Proactively manage risk to limit downside
We actively attempt to limit our business and cash flow.     As of December 31, 2012, we had approximately 145,800 net acresoperating risks by focusing on safety, flexibility in our financial profile, operation efficiencies, hedging, reducing G&A and developing oil and natural gas takeaway capacity with multiple delivery points.
Develop our acreage in the Permian-Garden City areamost cost-efficient manner possible and had de-risked approximately 60,000 net acres for horizontal Upper Wolfcamp drillingtarget our wells with the highest rate of return potential
In the current price environment, we believe the best way to develop our acreage is to take a long-term approach and approximately 70,000 net acres for horizontal Cline drilling. develop at a deliberate pace that targets our locations with the potential highest rates of return.
We are continuing to de-risk the remaining acreage for these zones as well as thebelieve that our entire acreage position and multiple zones will be a part of our future strategy if prices for additional horizontal Middlecommodities rise and/or further cost reductions and Lower Wolfcamp development. We are leveragingtechnological advances make wells more economic.
Deploy our capital in a conservative and strategic manner and review opportunities to bolster our liquidity
In the knowledgecurrent economic environment, maintaining liquidity is critical. Therefore, we will be highly selective in the projects that we fund and data we have accumulated in this areawill review opportunities to bolster our liquidity and have begun to apply it tofinancial position through accessing the capital markets, utilizing our Permian-China Grove acreage, targeting the Cline shale, which we believe is similar to that in our Permian-Garden City area. We believe the opportunitiesSenior Secured Credit Facility and asset dispositions.

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afforded in bothContinue to hedge our production to protect cash flows and diminish the effects of commodity price fluctuations
During 2015, we realized a significant benefit through our Permian areas as well as the Anadarko Granite Wash will support consistent, predictable, annual growth in reserves, production and cash flow.
Implement a development plan for our Permian-Garden City acreage.    We expect our Permian-Garden City acreage will be the primary driver of our reserves, production and cash flow growth for the foreseeable future. As a result of our technical datahedging program and the performance ofcertainty that it provided to our 34 horizontal Cline wells and 23 horizontal Upper Wolfcamp wells,cash flow. In the future, we believe we had confirmed the horizontal development potential of the Cline and Upper Wolfcamp shales on approximately 70,000 net acres and 60,000 net acres, respectively, of our Permian-Garden City acreage as of the end of 2012. Based on additional drilling results through February 28, 2013, coupled with our technical data and well performance, we believe we have confirmed the vertical development potential of our entire Permian-Garden City acreage position and the equivalent of 360,000 net acres for horizontal development. We further believe this de-risked acreage position (as described below) provides a multi-year development inventory to support consistent growth of reserves and production. We are creating an implementation plan to systematically and efficiently develop this acreage position as a resource play. This plan also provides flexibility to include development of additional acreage for both the Upper Wolfcamp and Cline, as well as development of the Middle and Lower Wolfcamp zones as we continuewill seek hedging opportunities to further de-risk these zones andprotect our remaining Permian-Garden City acreage. Going forward, we plan to continue drilling and collecting technical data acrosscash flows from commodity price fluctuations.
Maintain our Permian-Garden City acreage position, asoperational flexibility
As reflected in our 2013 capital budget allocation.
CapitalizeDecember 31, 2015 reserves, we deliberately reduced our PUD bookings. While this decision impacts our booked reserves on technical expertise and database.    We are leveraginga current basis, we also believe that it provides us with the crucial flexibility necessary to allow us to alter our operating and technical expertise to further delineate our core acreage positions. Through the utilization of an extensive technical petrophysical database, a vertical drilling program covering a majority of our core acreage position, numerous vertical single zone tests in our horizontal targets, and the production data from the 60 completed horizontal wells in all three Wolfcamp zones and the Cline shale in the Permian-Garden City area, we believe we have de-risked a significant portion of such acreage. We are further capitalizing on this data and expertise through our acreage acquisition and activities in our Permian-China Grove area.
We intend to continue to make upfront investments in technology to understand the geology, geophysics and reservoir parameters of the rock formations that define our exploration and development programs. Through comprehensive coring programs, acquisition and evaluation of high-quality 3D seismic data and advance logging/simulation technologies, we expect to continue to both economically de-risk our remaining property sets to the extent possible before committing to a drilling program, and assist in the evaluation of emerging opportunities.
Enhance returns through prudent capital allocation, optimization of our development program and continued improvements in operational and cost efficiencies.     In the current commodity price environment, we have directed our capital spending toward oil and liquids-rich drilling opportunities that provide attractive returns. We believe by emphasizing our horizontal program, we can increase the efficiency of our resource recovery in the multiple vertically stacked producing horizons on our acreage in our Permian-Garden City area. We are refining a development plan for a portion of our Permian-Garden City area in order to minimize costs and maximize recoveries. We expect to begin implementing this plan in 2013 commencing with pilot programs to test optimal spacing of the laterals, both vertically and horizontally, in the four initial zones targeted for horizontal development. In 2012, we began and are now continuing to drill longer laterals with increased density of frac stages to enhance the cost-efficient recovery of our resource potential. In addition, horizontal drillingplans as may be economic in areas where vertical drilling is currently not economical or logistically viable. We will continuenecessary to utilizedevelop our deep vertical drilling programhighest rate of return properties to continue to de-risk additional acreage for all zones. Our management team is focused on continuous improvement ofbenefit our operating practices and has significant experience in successfully converting exploration programs into cost-efficient development projects. Operational control allows us to more effectively manage operating costs, the pace of development activities, technical applications, the gathering and marketing of our production and capital allocation.shareholders.
Evaluate and pursue value-enhancing acquisitions, mergers, joint ventures and divestitures.    Whiledivestitures
We will continue to monitor the market for strategic acquisitions that we believe could be accretive and enhance shareholder value. However, as a result of our multi-year inventorypast years of potentialdata collection and delineation drilling, locationswe have established the production capability of a substantial portion of our acreage in multiple zones, which provides us with a significant growth opportunities, wedrilling inventory even at the current depressed commodity prices.
Capitalize on technical expertise and database
We will continue to evaluate strategically compellingleverage our operating and technical expertise to further delineate and develop our core acreage positions. We believe the development and use of the Earth Model will enable us to better identify the best locations and drill them more efficiently, thereby capturing more hydrocarbons than would otherwise be possible.
Midstream and marketing
Expand the use of our previously built infrastructure and look for opportunities for strategic expansion
We believe that our infrastructure provides us with optionality and efficiencies in developing and transporting production from our Permian-Garden City acreage position. Because of the value we ascribe to this infrastructure, we will continue to look for strategic expansion opportunities while maintaining our core strategy of providing marketing optionality for our oil, NGL and natural gas production.
Participate in the growth and expansion of Medallion
We believe the Medallion pipeline is a valuable and unique asset acquisitions, mergers, joint venturesin our area of operations that provides benefit to us both in terms of transporting our production and divestitures. Any transactionfinancially through our 49% ownership. We will continue to closely monitor all proposed expansions and participate in those that we pursuefeel will either generally complement our asset base, provide an anticipated competitive economic proposition relativebe beneficial to our existing opportunities or market conditions, or provide an avenue to accelerate the development of our potentially higher return acreage and maximize the value of the total Company.shareholders.
Proactively manage risk to limit downside.    We continually monitor and control our business and operating risks through various risk management practices, including maintaining a flexible financial profile, making upfront investment in research and development as well as data acquisition, owning and operating our natural gas gathering systems with multiple sales outlets, minimizing long-term contracts, maintaining an active commodity hedging program and employing prudent safety and environmental practices.

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Our competitive strengths
We have a number of competitive strengths in each of our segments that we believe will help us to successfully executeassist in the successful execution of our business strategy:strategy.
Significant de-risked Permian Basin acreage positionExploration and multi-year drilling inventory.    From our inception in 2006 through December 31, 2012, we have completed more than 725 gross vertical and 60 gross horizontal wells with a success rate of approximately 99%. Sixty of our gross horizontal wells have been drilled and completed in our current four targeted zones. Based on this drilling success, coupled with our technical data, we believe we have confirmed the horizontal development potential of the Cline and Upper Wolfcamp shales on approximately 70,000 and 60,000 net acres, respectively, of our Permian-Garden City acreage, as well as our entire acreage position for deep vertical development as of December 31, 2012. Based on additional drilling results through February 28, 2013, coupled with our technical data and well performance, we believe we have confirmed the development potential of additional acreage in all four zones. As a result, we believe we have confirmed the horizontal development potential of the equivalent of 360,000 net acres in the four zones that includes 80,000 net acres in the Upper Wolfcamp, 80,000 net acres in the Middle Wolfcamp, 73,000 net acres in the Lower Wolfcamp and 127,000 net acres in the Cline shale as of February 28, 2013. We believe our Anadarko Granite Wash acreage has also been significantly de-risked through our focus on data-rich, mature producing basins with well studied geology, past drilling activity, engineering practices and concentrated operations, combined with our use of new technologies. We believe these locations provide a multi-year drilling inventory supporting future growth in reserves, production and cash flow.
Extensive Permian technical database and expertise.expertise
We have made a substantial upfront investment to understand the geology, geophysics and reservoir parameters of the rock formations and production characteristics that define our explorationdrilling and development programs.program. We have utilized this information in the creation of the Earth Model, which we believe will assist us in optimizing our well results.
Contiguous acreage position that contains multiple zones with a large library of data that is applicable to oursubstantial drilling inventory
We have 131,763 net acres in the Permian-Garden City area that are largely contiguous, have identified at least seven zones from which we can produce and have a significant drilling inventory even at the current depressed commodity prices. Our contiguous acreage base that includes approximately 800 square milesposition also allows us to drill long laterals (10,000 feet or greater) in many locations,

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which we estimate will provide an even greater rate of proprietary/licensed 3D seismic data, 130 proprietary petrophysical logsreturn as we continue to refine our spacing, drilling and more than 13,500 historical open-hole logs. On our Permian-Garden City acreage, we have 11 whole cores and more than 300 sidewall cores in our four horizontal target zones. We have correlated this data across our Permian-Garden City acreage with more than 725 gross vertical and 60 gross horizontal wells. Our management team has extensive industry experience. Each of Mr. Foutch's previous companies focused on the same general areas of the Permian and Anadarko Basins in which Laredo currently operates. Most members of our senior management team have more than twenty years of experience and knowledge directly associated with our current primary operating areas. As of December 31, 2012, approximately 45% of our full-time staff are experienced technical employees, including 28 engineers, 18 geoscientists, 19 landmen and 56 technical support staff.completion techniques.
Significant operational control.control
We operate wells that represent approximately 95%99% of the economic value of our proved developed reserves as of December 31, 2012,2015, based on aour reserve report prepared by Ryder Scott. We believe that maintaining operating control permits us to better pursue our strategiesstrategy of enhancing returns through operational and cost efficiencies and maximizing cost-efficient ultimate hydrocarbon recoveries from mature producing basins through reservoir analysis and evaluation and continuous improvement of drilling, completion and stimulation techniques. We expect to maintain operating control over most of our potential drilling locations.
Owned gathering infrastructure.    Our wholly-owned subsidiary, Laredo Gas Services, LLC, had more than 360 milesSignificant hedges in place to guard against price volatility
We engage in an active hedging program in an effort to decrease the volatility of pipelineour cash flow due to changes in ourcommodity prices. We currently have hedges in place for oil that represent 85% to 90% of anticipated oil sales in 2016 with a weighted-average floor price of $70.84 per Bbl, and hedges in place for natural gas gathering systems in the Permian and Anadarko Basins asthat represent 70% to 75% of December 31, 2012. These systems and flow lines provide greater operational efficiency and lower differentials for ouranticipated natural gas productionsales in our liquids-rich Permian2016 with a weighted-average floor price of $3.00 per MMBtu. For 2017, we have hedges in place for 2,628,000 barrels of oil with a weighted-average floor price of $77.22 per Bbl and Anadarko Granite Wash plays and enable us to coordinate our activities to connect our wells to market upon completionhedges for natural gas for 13,515,000 MMBtu with minimal days waiting on pipeline. Additionally, on a portionweighted-average floor price of our production, this provides us$2.70 per MMBtu. For 2018, we have hedges in place for natural gas for 8,220,000 MMBtu with multiple sales outlets through interconnecting pipelines, potentially minimizing the risksa weighted-average floor price of both shut-ins awaiting pipeline connection and curtailment by downstream pipelines. We continue to expand this concept in the Permian-Garden City area by building out our crude oil transportation infrastructure in order to attempt to minimize the risks of shut-in or curtailment. We have constructed a crude oil truck station in Glasscock County, Texas, are building a second truck station and have completed the design work for a crude oil gathering system in Reagan County, Texas.
Financial strength and flexibility.  We maintain a financial profile that provides operational flexibility. At December 31, 2012, we had approximately $660 million available for borrowings on our senior secured credit facility and total debt of approximately $1.2 billion, of which $165 million was outstanding on our senior secured credit facility. Our total debt, less available cash on the balance sheet, was approximately 2.6 times our Adjusted EBITDA (a non-GAAP financial measure, see "Selected Historical Financial Data—Non-GAAP financial measures and reconciliations") for the year ended December 31, 2012.$2.50 per MMBtu. We believe that our operating cash flow and the aforementioned liquidity sources provide us with the ability to implement our planned exploration and development activities and accelerate our capital program, if deemed appropriate. We use derivative financial instruments to reduce exposure to fluctuations in the prices of oil and natural gas. By removing a portion of the price volatilitycertainty associated with future production, we expectthese hedges enables us to mitigate, but not eliminate, the potential volatility in cash flows from operations due to fluctuations in commodity prices.better plan and forecast our upcoming capital and operational spending.

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Strong corporate governance and institutional investor support.support
Our board of directors is well qualified and represents a meaningful resource to our management team. Our board of directors, which is comprised of Laredo management and representatives of Warburg Pincus, other independent directors and our institutional investor, as well as independent individuals,Chief Executive Officer, has extensive oil and natural gas industry and general business expertise. We actively engage our board of directors, on a regular basis, for their expertise on strategic, financial, governance and risk management activities. In addition, Warburg Pincus has many years of relevant experience in financing and supporting exploration and production companies and management teams. During the last two decades, Warburg Pincus has been the lead investor in dozens ofmany such companies, including Broad Oak and two previous companies operated by members of our management team.
Focus areasMidstream and marketing
Owned gathering infrastructure
We focus on developing a balanced inventoryown and operate more than 200 miles of quality drilling opportunities that provide us with the operational flexibility to economically develop and producepipeline in our crude oil and natural gas reserves from conventional and unconventional formations. Our properties are currently locatedgathering systems in the prolific Permian and Mid-Continent regions of the United States, where we leverage our experience and knowledge to identify, exploit and acquire additional upside potential. We have been successful in delivering repeatable results through internally generated vertical and horizontal drilling programs. We expect our Permian-Garden City acreage, which is characterized by a higher oil content, to be the primary driver of our reserves, production and cash flow growth for the foreseeable future and as discussed above, we are exploring opportunities to divest our non-Permian Basin assets.
Permian Basin
The oil and liquids-rich Permian Basin, located in West Texas and Southeastern New Mexico, where we have assembled 203,549 net acres as of December 31, 2012,2015. Additionally, through our joint venture with Medallion, upon completion of current projects we will have access to 500 miles of oil gathering systems and pipelines connected to Colorado City, Texas. As a 49% owner of Medallion, we financially benefit from our share of the net income from the shipment of crude oil on the system. These systems and pipelines provide greater operational efficiency and potentially lower price differentials for our production and enable us to coordinate our activities to connect our wells to market upon completion with minimal pipeline delays.
Our production corridors allow us to more efficiently develop our acreage and utilize/dispose of water
We have built production corridors on our contiguous acreage position that we believe increase efficiencies in oil and natural gas takeaway capacity, water supply and field level operations. We believe that our production corridors provide us with identified areas within which we can achieve material cost savings and efficiencies through the use of our previously built infrastructure. In addition, we believe that drilling wells within these corridors increases our production consistency and allows us to better plan our development program.
The use and disposal of water is one of the most prolific onshore oil and natural gas producing regionschallenging aspects of horizontal drilling in the United States. It is characterized by an extensivePermian Basin and our production history, mature infrastructure, long reserve lifecorridors provide us with a reliable and hydrocarbon potential in multiple intervals. Our primary production and exploitation fairway (Permian-Garden City area) is centered on the eastern side of the basin approximately 35 miles east of Midland, Texas and extends approximately 20 miles wide (east/west) and approximately 85 miles long (north/south) in Howard, Glasscock, Reagan and Sterling counties. As of December 31, 2012, we held approximately 145,800 net acres in more than 300 sections in the Permian-Garden City area with an average working interest of approximately 92% in all producing wells. In addition, as of December 31, 2012, we held approximately 57,750 net acres in the Permian-China Grove area, primarily in Mitchell county, where we are focusing additional exploration activities.
At the beginning of 2012, our drilling efforts were primarily defined by a vertical Wolfberry program, supplemented with horizontal wells initially focused in the Cline shale. We believeconsistent means to ensure that our acreage in the Permian-Garden City can be produced horizontally, with even stronger economic results, across both the Wolfcamp and Cline shale formations. Within the Wolfcamp, we have three distinct zones; the Upper, Middlewater we need to complete our wells while also providing take away capacity for flowback and Lower Wolfcamp shales, which together with the Cline shale provide four horizontal targets. During 2012 we drilled and completed 35 horizontal wells confirming production and attractive returns from all four zones. Today, we are increasing our drilling focus towards a horizontal development and exploitation program supported by vertical wells that help us define the horizontal targets.
Our proprietary and industry data includes approximately 800 square miles of proprietary/licensed 3D seismic, 11 whole and more than 300 sidewall cores, 23 single-zone tests, more than 130 proprietary petrophysical logs, greater than 13,500 open-hole logs, and 60 completed horizontal wells in the four zones we are currently targeting, providing extensive production and reservoir engineering data as of December 31, 2012. From our analysis of this data, we believe each of these zones has the potential to be a stand-alone resource play with significant areal extent, the ability to produce commercial quantities of hydrocarbons and the viability of repeatable well performance from multiple potential locations. Based on our analysis, we also believe the Wolfcamp and Cline shales exhibit similar petrophysical attributes to other large, domestic oil and liquids-rich shale plays, such as the Eagle Ford and Bakken shale plays.
The Wolfcamp shale resource play
The Wolfcamp shale continues to be a focus of active drilling by the industry and is encountered at depths ranging from 7,000 to 9,000 feet under our Permian-Garden City acreage. We have been able to further define the gross Wolfcamp shale formation into three discernible zones: the Upper, Middle and Lower Wolfcamp. Under our Permian-Garden City acreage, each of these zones ranges in thickness between 300 and 600 feet. Based on our proprietary data and analysis, we believe we have confirmed that all three Wolfcamp zones share many similar petrophysical and production attributes.
As of December 31, 2012, we had successfully drilled and completed 23 horizontal wells in the Upper Wolfcamp, two horizontal wells in the Middle Wolfcamp and one horizontal well in the Lower Wolfcamp. The initial production results from these Middle and Lower Wolfcamp zones appear comparable to our Upper Wolfcamp completions.produced water.

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Upper Wolfcamp.    As of December 31, 2012, we estimated that approximately 60,000 net acres of our Permian-Garden City area had been de-risked for horizontal Upper Wolfcamp development. As of February 28, 2013, we estimated that an additional 20,000 net acres had been de-risked, totaling 80,000 net acres in the Permian-Garden City area. In the Upper Wolfcamp, we have identified a facies change progressing from westOur water treatment facility allows us to east across our acreage, with the shale becoming increasingly carbonate. To date we have drilledmore sustainably utilize recycled flowback and completed more wells in the southern third of our de-risked Upper Wolfcamp acreage, while continuing to explore and develop the entire area.
Middle and Lower Wolfcamp.    In the Middle and Lower Wolfcamp, we continue to expand our evaluation efforts over our acreage. Production from our vertical drilling program has confirmed that both the Middle and Lower Wolfcamp zones underlie the majority of our acreage. As with the Upper Wolfcamp, there appears to be a similar facies change in these zones. As of December 31, 2012, we had completed two horizontal wells in the Middle Wolfcamp zone and one horizontal well in the Lower Wolfcamp zone. As of February 28, 2013, we estimated that approximately 80,000 net acres in the Middle Wolfcamp and 73,000 net acres in the Lower Wolfcamp had been de-risked for horizontal development. Through the combination of our drilling activities, the initial production results from these wells and our extensive technical database, we will continue our efforts to fully evaluate the potential of both the Middle and Lower Wolfcamp over our whole Permian-Garden City acreage position.
The Cline shale resource play
As of December 31, 2012, we estimated that approximately 70,000 net acres of our Permian-Garden City area had been de-risked for horizontal Cline development. As of February 28, 2013, we estimated that an additional 57,000 net acres had been de-risked, totaling 127,000 net acres in the Permian-Garden City area. In 2012 we successfully drilled and completed 12 horizontal wells in the Cline shale.
We first recognized the potential of the Cline shale in 2008, took our first Cline cores in 2009 and drilled our first horizontal well in the formation in early 2010. We are moving into the horizontal development phase of this identified acreage. We believe the petrophysical data indicates this is a repeatable economic resource play, and we continue to delineate and define the Cline potential on our remaining Permian-Garden City acreage. Industry activity relative to the Cline shale has also been initiated with several horizontal wells being drilled and/or permitted immediately north and east of our Permian-Garden City acreage position.
The Cline shale is encountered at a depth of approximately 9,000 to 9,500 feetproduced water in our Permian-Garden City acreage. Our proprietary petrophysical data indicates that the Cline is a laterally extensive, high-quality, over-pressured source rock with an abundance of oil-prone organic mattercompletion operations and high generation potential. Cline conventional cores contain numerous vertical extension fractures that are partially open, significantly enhancing system permeability over the matrix. Multiple thermal maturity indices show the Cline to be in a "peak liquids" stage in the late oil to early gas/condensate window. Asreduce our drillingcapital and data acquisition programs progress, we are beginning to define those areas that show commonality in terms of reservoir type, qualityoperating expenses for water supply and repeatability.disposal.
We intend to leverage the knowledge and database we have accumulated from our development of our Permian-Garden City area and apply it to our Permian-China Grove area that we also believe is prospective for the Cline shale. As of December 31, 2012, we held approximately 57,750 net acres in this area, primarily in Mitchell County, Texas, and at the end of 2012 were drilling and completing our first vertical and horizontal wells to begin defining the potential upside of this acreage.
Anadarko Granite Wash
Straddling the Texas/Oklahoma state line, our Granite Wash play extends across a large area in the western part of the Anadarko Basin. As of December 31, 2012, we held 37,322 net acres in Hemphill County, Texas and Roger Mills County, Oklahoma. Currently, we are drilling only horizontal opportunities targeting the liquids-rich Granite Wash formation. By utilizing the whole core data we obtained early in the exploration process, the subsurface information from our vertical wells (and others drilled by industry), and enhanced logging interpretation techniques, we have been able to develop a detailed regional geologic depositional and engineering understanding of the Granite Wash.
Several of the targeted intervals in the Granite Wash are now being developed in a repeatable economic drilling program. The Granite Wash is a conventional play that requires drilling to be done "surgically" to insure that each lateral penetrates the maximum amount of pay in each defined porosity fairway. We continue our exploration efforts by defining additional porosity trends in both deeper and shallower Granite Wash zones, utilizing our large open-hole log database and in-house petrophysical expertise.

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Other areas
As of December 31, 2012, we held 44,621 net acres in the Central Texas Panhandle where our operations are currently conducted through our joint venture with ExxonMobil. The prospective zones in this area are relatively shallow (less than 9,500 feet), with a majority being predominately natural gas.
As of December 31, 2012, we held 22,602 net acres in the eastern end of the Anadarko Basin, in Caddo, Grady and Comanche counties, Oklahoma. There are multiple targets to drill in this area, varying in depth between 8,000 feet and 22,000 feet, which are predominantly dry natural gas.
These areas, which we refer to as our "Other Areas", represent approximately 8% of our year ended December 31, 2012 production and approximately 4% of our estimated proved reserves as of December 31, 2012.
New Venturesproperties
In addition to our Permian and Anadarko Granite Wash plays, we continue to evaluate new opportunities in other areas within our core operating regions, which we refer to as our "New Ventures."
The Dalhart Basin is located on the western side of the Texas Panhandle. As of December 31, 2012, we held 88,728 net acres in the Dalhart Basin. Our current exploration activity in this area is concentrated around liquids-rich shale plays that may underlie a significant portion of the entire area. Targeted intervals are considered oil plays at depths of less than 7,000 feet. As of December 31, 2012, we have drilled four gross wells, three vertical and one horizontal in the Dalhart Basin.
In addition,Permian-Garden City acreage, as of December 31, 2012,2015 we held approximately 24,61521,257 net acres in other New Venture areas.areas, including the Palo Duro Basin and Permian-China Grove area. We anticipate little or no activity on these other properties in 2016. Approximately 29% of this acreage will expire in 2016, absent drilling or renegotiation of the applicable leases.
Our operations
Estimated proved reserves
Our reserves are reported in twothree streams: crude oil, NGL and liquids-rich natural gas. The economic value of the natural gas liquids in our natural gas is included in the wellhead natural gas price. In this Annual Report, on Form 10-K, the information with respect to our estimated proved reserves presented below has been prepared by Ryder Scott, our independent reserve engineers, in accordance with the rules and regulations of the SEC applicable to the periods presented.
Per SEC guidelines, companies are required to use the unweighted arithmetic average first-day-of-the-month price for each month within the 12-month period prior to the end of the reporting period before differentials ("Benchmark Prices"). The Benchmark Prices are then adjusted for quality, transportation fees, geographical differentials, marketing bonuses or deductions and other factors affecting the price received at the wellhead ("Realized Prices"). The Realized Prices are held constant and utilized to calculate estimated reserves and the associated future cash flows. The following table presents the Benchmark Prices and Realized Prices as of the periods presented.
  For the years ended
  December 31, 2015 
December 31, 2014(1)
Benchmark Prices    
   Oil ($/Bbl) $46.79
 $91.48
   NGL ($/Bbl) $18.75
 $
   Natural gas ($/MMBtu) $2.47
 $4.25
Realized Prices    
   Oil ($/Bbl) $45.58
 $89.57
   NGL ($/Bbl) $12.50
 $
   Natural gas ($/Mcf) $1.89
 $6.39

(1)For periods prior to January 1, 2015, the Company presented reserves for oil and natural gas, which combined NGL with the natural gas stream, and did not separately report NGL. This change impacts the comparability of 2015 with prior periods.
Our net proved reserves were estimated at 188,632125,698 MBOE on a three-stream basis as of December 31, 2012,2015, of which 43%80% were classified as proved developed reserves and 52%42% are attributable to oil reserves. The following table presents summary data for each of our core operating areasarea as of December 31, 2012.2015. Our estimated proved reserves atas of December 31, 20122015 assume our ability to fund the capital costs necessary for their development and are affected by pricing assumptions. In addition, we may not be able to raise the amounts of capital that would be necessary to drill a substantial portion of our proved undeveloped reserves. See "Item 1A. Risk Factors—Risks related to our business—Estimating reserves and future net revenues involves uncertainties. Decreases in oil and natural gascommodity prices, or negative revisions to reserve estimates or assumptions as to future oil, NGL and natural gas prices, may lead to decreased earnings, losses or impairment of oil and natural gas assets".assets."
  
At December 31, 2012
Proved reserves
  
  (MBOE) % of total
Area:    
Permian Basin 160,028
 85%
Anadarko Granite Wash 20,172
 11%
Other Areas(1)
 8,416
 4%
New Ventures(2)
 16
 %
Total 188,632
 100%

(1)   Includes Eastern Anadarko and Central Texas Panhandle.
(2) Includes Dalhart Basin and other New Ventures.
  As of December 31, 2015
  Proved reserves % of total
Area: (MBOE)  
Permian Basin 125,698
 100%
Other properties 
 %
Total 125,698
 100%
    

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The following table sets forth more information regarding our estimated proved reserves atas of December 31, 20122015 and 2011.2014 (with 2014 results presented on a two-stream basis). Ryder Scott our independent reserve engineers, estimated 100% of our proved reserves atas of December 31, 20122015 and December 31, 2011.2014. The reserve estimates atas of December 31, 20122015 and 20112014 were prepared in accordance with the SEC's rules regarding oil and natural gas reserve reporting currently in effect. The information does not give any effectapplicable to our commodity hedges.the periods presented.
 At December 31, As of December 31,
 2012 2011 2015 2014
Proved developed producing:    
Oil and condensate (MBbl) 40,493
 53,270
NGL (MBbl) 29,009
 
Natural gas (MMcf) 178,519
 272,674
Total proved developed producing (MBOE) 99,255
 98,715
    
Proved developed non-producing:    
Oil and condensate (MBbl) 451
 3,705
NGL (MBbl) 340
 
Natural gas (MMcf) 2,094
 18,819
Total proved developed non-producing (MBOE) 1,140
 6,842
    
Proved undeveloped:    
Oil and condensate (MBbl) 11,695
 83,215
NGL (MBbl) 6,718
 
Natural gas (MMcf) 41,339
 351,301
Total proved undeveloped (MBOE) 25,303
 141,765
    
Estimated proved reserves:        
Oil and condensate (MBbl) 98,141
 56,267
 52,639
 140,190
NGL (MBbl) 36,067
 
Natural gas (MMcf) 542,946
 601,117
 221,952
 642,794
Total estimated proved reserves (MBOE) 188,632
 156,453
 125,698
 247,322
    
Proved developed producing (MBOE) 76,777
 59,631
Proved developed non-producing (MBOE) 4,713
 3,564
Proved undeveloped (MBOE) 107,142
 93,258
Percent developed 43% 40% 80% 43%
Technology used to establish proved reserves.reserves
Under the SEC rules, proved reserves are those quantities of oil, NGL and natural gas that by analysis of geoscience and engineering data can be estimated with reasonable certainty to be economically producible within five years from a given date forward from known reservoirs, and under existing economic conditions, operating methods and government regulations. The term "reasonable certainty" implies a high degree of confidence that the quantities of oil, NGL and/or natural gas actually recovered will equal or exceed the estimate. Reasonable certainty can be established using techniques that have been proven effective by actual production from projects in the same reservoir or an analogous reservoir or by other evidence using reliable technology that establishes reasonable certainty. Reliable technology is a grouping of one or more technologies (including computational methods) that has been field tested and has been demonstrated to provide reasonably certain results with consistency and repeatability in the formation being evaluated or in an analogous formation.
To establish reasonable certainty with respect to our estimated proved reserves, our internal reserve engineers and Ryder Scott, our independent reserve engineers, employed technologies that have been demonstrated to yield results with consistency and repeatability. The technologies and economic data used in the estimation of our proved reserves include, but are not limited to, open holeopen-hole logs, core analyses, geologic maps, available downhole and production data and seismic data. Reserves attributable to producing wells with sufficient production history were estimated using appropriate decline curves, material balance calculations or other performance relationships. Reserves attributable to producing wells with limited production history and for undeveloped locations were estimated using pore volume calculations andprimarily by performance from analogous wells in the surrounding area and the use of geologic data to assess the reservoir continuity. These wells were considered to be analogous based on production performance from the same formation and completion using similar techniques.

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As discussed previously in this Annual Report, during 2015 commodity prices for crude oil, NGL and natural gas experienced sharp declines, and this downward trend has accelerated further into the first quarter of 2016, with crude oil prices reaching a twelve-year low in February 2016. We have significantly reduced our capital budget for 2016. In addition, we have purposely significantly reduced the portion of our reserves that have historically been categorized as "proved undeveloped" or "PUD." We have adjusted our long-range five-year SEC PUD bookings methodology because given the current economic price environment, coupled with (i) our efforts to develop our acreage in the most efficient manner possible and determine which potential locations will be most profitable and (ii) the uncertain effect that such environment will have on the industry’s access to the capital markets, we believe that we can optimize the value for our shareholders by maintaining greater flexibility in choosing the specific drilling locations that may yield the greatest rates of return.
As our activities to date have indicated, the majority of our acreage represents a resource play. In the near-term, our goal is to drill those locations that we anticipate have the potential to provide the greatest economic return and enhance shareholder value, and we have determined that the most efficient way to accomplish this is to maintain the flexibility to choose those locations based upon our continuing insight as we drill and collect data across our acreage, regardless of SEC reserve-booking status. Reducing our future PUD commitments provides us the most flexibility to maximize our rate of return at prevailing conditions and minimize the requirement to drill wells previously assigned under very different circumstances as specific PUD locations. Accordingly, we have reduced our booked PUD locations to those we have reasonable certainty to believe that we will develop in at least a two-year time horizon while maintaining the flexibility to add new PUD locations and convert other locations to proved developed reserves as our plans deem appropriate and opportunistic.
Qualifications of technical persons and internal controls over reserves estimation process.process
In accordance with the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers and guidelines established by the SEC, Ryder Scott, our independent reserve engineers, estimated 100% of our proved reserve information as of December 31, 20122015 and 20112014 included in this Annual Report on Form 10-K.Report. The technical persons responsible for preparing the reserves estimates presented herein meet the requirements regarding qualifications, independence, objectivity and confidentiality set forth in the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers.
We maintain an internal staff of petroleum engineers and geoscience professionals who work closely with our independent reserve engineers to ensure the integrity, accuracy and timeliness of data furnished to Ryder Scott in their reserves estimation process. Our technical team meets regularly with representatives of Ryder Scott to review properties and discuss methods and assumptions used in Ryder Scott's preparation of the year-end reserves estimates. The Ryder Scott reserve report is reviewed with representatives of Ryder Scott and our internal technical staff before dissemination of the information. Additionally, our senior management reviews the Ryder Scott reserve report.
John E. Minton, our SeniorOur Vice President of Reservoir Engineering,Modeling and Field Development Planning, is the technical person primarily responsible for overseeing the preparation of our reserves estimates. He has more than 3940 years of practical experience with 3532 years of this experience being in the estimation and evaluation of reserves. He has been a registered Professional Engineer in the State of Oklahoma since 1982, has a BachelorBachelors of Science degree in MechanicalChemical Engineering and is a life member in good standing of the Society of Petroleum Engineers. Mr. MintonOur Vice President of Reservoir Modeling and Field Development Planning reports directly to our PresidentChairman and Chief OperatingExecutive Officer. Reserve

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Reserves estimates are reviewed and approved by our senior engineering staff, with final approval by our President and Chief Operating Officer and certain other members of our senior management. Our senior management also reviews our independent engineers' reserve estimates and related reports with our senior reservoir engineering staff and other members of our technical staff.staff, our audit committee and our Chief Executive Officer and then submitted to our board of directors for final approval.
Proved undeveloped reserves
Our proved undeveloped reserves decreased from 141,765 MBOE, reported on a two-stream basis, increased from 93,258 MBOE atas of December 31, 2011,2014, to 107,14225,303 MBOE, atreported on a three-stream basis, as of December 31, 2012. During 2012, 5,1632015. We estimate that we incurred $162 million of costs to convert 10,563 MBOE of proved undeveloped reserves from 8337 locations were converted tointo proved developed reserves.reserves in 2015. New proved undeveloped reserves of 69,8922,669 MBOE were added during the year with approximately 80% coming from four new horizontal UpperMiddle Wolfcamp Cline and Granite Washlocations. Negative revisions to proved undeveloped reserves of 106,883 MBOE were due to the combined effect of our adjusted booking methodology with the removal of 378 proved undeveloped locations and the balance fromnet effect of reinterpreting 34 undeveloped locations. The 378 locations that were removed were comprised of 182 vertical deep Wolfberry locations. Negative revisionswells due to lower commodity prices and 196 horizontal wells to better align the timing of 55,837their development with our future drilling plans. In addition, 1,685 MBOE were primarily attributableremoved due to lower natural gas prices and increased development costs for vertical Granite Washthe sale of nine undeveloped locations in the Anadarko Basin and shallow Wolfberry vertical locations in the Permian Basin. These locations became economically unattractive to develop due to these factors and were replaced by new horizontal and/or oil development opportunities.August 2015.
Estimated total future development and abandonment costs related to the development of proved undeveloped reserves as shown in our December 31, 20122015 reserve report are $2.2 billion.$266 million. Based on this report, the capital estimated to be spent in 2013, 2014, 2015, 2016 and 2017 to develop the proved undeveloped reserves is $305 million, $358 million, $455 million, $533$192 million and $512$74 million, respectively. Allrespectively, and $0 for each of

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2018, 2019 and 2020. Based on our anticipated cash flows and capital expenditures, as well as the availability of capital markets transactions, all of the proved undeveloped locations are expected to be drilled within a five-yeartwo-year period. Reserve calculations at any end-of-year period are representative of our development plans at that time. Changes in circumstance, including commodity pricing, oilfield service costs, technology, acreage position and availability and other economic factors may lead to changes in development plans.

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Production,Sales volume, revenues and price history
The following table sets forth information regarding production,sales volumes, revenues, and realizedaverage sales prices and productionaverage costs per BOE sold for the years ended December 31, 2012, 20112015, 2014 and 2010. Our2013. For the 2013 and 2014 periods, our reserves and production arewere reported in two streams: crude oil and liquids-rich natural gas. The economic value of thegas, and for 2015, our reserves and production are reported in three streams: crude oil, NGL and natural gas liquids in our liquids-rich natural gas is included in the wellhead natural gas price.gas. For additional information on price calculations, see the information in "Item 7. Management's discussionDiscussion and analysisAnalysis of financial conditionFinancial Condition and resultsResults of operations.Operations."
  For the years ended December 31,
  2012 2011 2010
Production data:      
Oil (MBbl) 4,775
 3,368
 1,648
Natural gas (MMcf) 39,148
 31,711
 21,381
Oil equivalents (MBOE)(1)
 11,300
 8,654
 5,212
Average daily production (BOE/D) 30,874
 23,709
 14,278
Revenues (in thousands):      
Oil $414,932
 $306,481
 $126,891
Natural gas $168,637
 $199,774
 $112,892
Average sales prices without hedges:      
Benchmark oil ($/Bbl)(2)
 $94.20
 $95.01
 $79.53
Realized oil ($/Bbl)(3)
 $86.89
 $91.00
 $77.00
Benchmark natural gas ($/MMBtu)(2)
 $2.80
 $4.02
 $4.39
Realized natural gas ($/Mcf)(3)
 $4.31
 $6.30
 $5.28
Average price ($/BOE) $51.65
 $58.50
 $46.01
Average sales prices with hedges(4):
      
Oil ($/Bbl) $86.69
 $88.62
 $77.26
Natural gas ($/Mcf) $5.02
 $6.67
 $6.32
Average price ($/BOE) $54.03
 $58.93
 $50.37
Average cost per BOE:      
Lease operating expenses $5.96
 $5.00
 $4.16
Production and ad valorem taxes $3.33
 $3.70
 $3.01
Depreciation, depletion and amortization $21.56
 $20.38
 $18.69
General and administrative(5)
 $5.50
 $5.90
 $5.93
  For the years ended December 31,
(unaudited) 2015 2014 2013
Sales volumes:(1)
      
Oil (MBbl) 7,610
 6,901
 5,487
NGL (MBbl) 4,267
 
 
Natural gas (MMcf) 26,816
 28,965
 34,348
Oil equivalents (MBOE)(2)(3)
 16,346
 11,729
 11,211
Average daily sales volumes (BOE/D)(3)
 44,782
 32,134
 30,716
Oil, NGL and natural gas revenues (in thousands):(1)
      
Oil $329,301
 $571,620
 $494,676
NGL $50,604
 $
 $
Natural gas $51,829
 $165,583
 $170,168
Average sales prices without hedges:(1)
      
Index oil ($/Bbl)(4)
 $48.80
 $93.00
 $97.97
Oil, realized ($/Bbl)(5)
 $43.27
 $82.83
 $90.16
Index NGL ($/Bbl)(4)
 $18.81
 $
 $
NGL, realized ($/Bbl)(5)
 $11.86
 $
 $
Index natural gas ($/MMBtu)(4)
 $2.66
 $4.41
 $3.65
Natural gas, realized ($/Mcf)(5)
 $1.93
 $5.72
 $4.95
Average price, realized ($/BOE)(5)
 $26.41
 $62.86
 $59.29
Average sales prices with hedges:(1)(6)
      
Oil, hedged ($/Bbl) $74.41
 $85.77
 $88.68
NGL, hedged ($/Bbl) $11.86
 $
 $
Natural gas, hedged ($/Mcf) $2.42
 $5.73
 $4.98
Average price, hedged ($/BOE) $41.71
 $64.62
 $58.66
Average cost per BOE sold:(1)
      
Lease operating expenses $6.63
 $8.23
 $7.06
Production and ad valorem taxes $2.01
 $4.29
 $3.78
Midstream service expenses $0.36
 $0.46
 $0.30
General and administrative(7)
 $5.53
 $9.04
 $8.00
Depletion, depreciation and amortization $16.99
 $21.01
 $20.87

(1)For periods prior to January 1, 2015, we presented our sales volumes, revenues, average sales prices for oil and natural gas and average costs per BOE sold, which combined NGL with the natural gas stream, and did not separately report NGL. This change impacts the comparability of the three periods presented.
(2)Bbl equivalents are calculated using a conversion rate of six Mcf per one Bbl.

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(3)The volumes presented for the years ended December 31, 2012, 2011 and 2010 are based on actual results and are not calculated using the rounded numbers presented in the table above.
(2)(4)BenchmarkIndex oil prices are the simple average of the daily settlement price for NYMEX West Texas Intermediate Light Sweet Crude Oil each month for the period indicated. BenchmarkIndex NGL price is the simple arithmetic average of the monthly average of the daily high and low prices for each NGL component, during the month of delivery as reported for Mont Belvieu, Texas by the Oil Price Information Service using the Purity Ethane price for the ethane component and the Non-TET prices for the propane, butane and natural gasoline components multiplied by the simple arithmetic average of the monthly average percentage makeup of each NGL component in Laredo's composite NGL barrel. Index natural gas prices are the simple arithmetic average of the last dayeach month's settlement price forof the NYMEX Henry Hub natural gas each month for the period indicated.First Nearby Month Contract upon expiration.
(3)(5)Realized crude oil, NGL and natural gas prices are the actual prices realized at the wellhead after all adjustmentsadjusted for natural gas liquids content, quality, transportation fees, geographical differentials, marketing bonuses or deductions and other factors affecting the price received at the wellhead. The prices presented are based on actual results and are not calculated using the rounded numbers presented in the table above.
(4)(6)Hedged prices reflect the after effectafter-effect of our commodity hedging transactions on our average sales prices. Our calculation of such after effectsafter-effects include realized gains and losses on cashcurrent period settlements forof matured commodity derivatives which doin accordance with GAAP and an adjustment to reflect premiums incurred previously or upon settlement that are attributable to instruments that settled in the period. The prices presented are based on actual results and are not qualify for hedge accounting.calculated using the rounded numbers presented in the table above.
(5)(7)
General and administrative includes non-cash stock-based compensation, net of $10.1amounts capitalized, of $24.5 million, $6.1$23.1 million and $1.3$21.4 million for the years ended December 31, 2012, 20112015, 2014 and 2010,2013, respectively. Excluding stock-based compensation from the above metric results in average general and administrative cost per BOE of $4.61, $5.19 and $5.69 for the years ended December 31, 2012, 2011 and 2010, respectively.

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Productive wells

The following table sets forth certain information regarding productive wells in each of our core areas atas of December 31, 2012.2015. All but two of our wells are classified as oil wells, all of which also produce liquids-rich natural gas and condensate. Wells are classified as oil or natural gas wells according to the predominant production stream. We also own royalty and overriding royalty interests in a small number of wells in which we do not own a working interest.
  Total producing wells Average WI %
  Gross   
  Vertical Horizontal 
Total(1)
 Net 
Permian Basin:          
Permian-Garden City 809
 60
 869
 799
 92%
Permian-China Grove 
 
 
 
 %
Anadarko Granite Wash 166
 25
 191
 142
 74%
Other Areas(2)
 338
 11
 349
 176
 50%
New Ventures(3)
 1
 1
 2
 2
 98%
Total 1,314
 97
 1,411
 1,119
  

(1)   1,181 of the 1,411 total gross producing wells are Laredo operated.
(2)   Includes Eastern Anadarko and Central Texas Panhandle.
(3)   Includes Dalhart Basin and other New Ventures.
  Total producing wells Average WI %
  Gross Net 
  Vertical Horizontal Total Total 
Permian Basin:          
Operated Permian-Garden City 913
 236
 1,149
 1,095
 95%
Non-operated Permian-Garden City 40
 6
 46
 14
 29%
Other properties 
 
 
 
 %
Total 953
 242
 1,195
 1,109
 93%
Acreage
The following table sets forth certain information regarding the developed and undeveloped acreage in which we own an interest as of December 31, 20122015 for each of our core operating areas, including acreage held by production ("HBP"). A majority of our developed acreage is subject to liens securing our senior secured credit facility.Senior Secured Credit Facility.
  Developed acres Undeveloped acres Total acres 
%
HBP
  Gross Net Gross Net Gross Net 
Permian Basin:              
Permian-Garden City 89,710
 81,921
 92,969
 63,878
 182,679
 145,799
 56%
Permian-China Grove 
 
 76,763
 57,750
 76,763
 57,750
 %
Anadarko Granite Wash 37,946
 29,596
 14,779
 7,726
 52,725
 37,322
 79%
Other Areas(1)
 90,645
 60,706
 11,356
 6,517
 102,001
 67,223
 90%
New Ventures(2)
 760
 622
 154,210
 112,721
 154,970
 113,343
 1%
Total 219,061
 172,845
 350,077
 248,592
 569,138
 421,437
 41%

(1)   Includes Eastern Anadarko and Central Texas Panhandle.
(2)   Includes Dalhart Basin and other New Ventures.
  Developed acres Undeveloped acres Total acres 
%
HBP
  Gross Net Gross Net Gross Net 
Permian Basin:              
Permian-Garden City 122,706
 106,765
 29,717
 24,998
 152,423
 131,763
 81%
Permian-China Grove 
 
 4,686
 3,645
 4,686
 3,645
 %
Permian total 122,706
 106,765
 34,403
 28,643
 157,109
 135,408
  
Other properties 
 
 23,746
 17,612
 23,746
 17,612
 %
Total 122,706
 106,765
 58,149
 46,255
 180,855
 153,020
 70%

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Undeveloped acreage expirations

The following table sets forth the gross and net undeveloped acreage in our core operating areas as of December 31, 20122015 that will expire over the next four years unless production is established within the spacing units covering the acreage or the lease is renewed or extended under continuous drilling provisions prior to the primary term expiration dates.
 2013 2014 2015 2016 2016 2017 2018 2019
 Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net
Permian Basin:                                
Permian-Garden City 50,309
 34,669
 14,608
 10,831
 12,026
 10,328
 640
 160
 7,684
 5,408
 3,290
 2,449
 10,556
 9,772
 
 
Permian-China Grove 
 
 20,501
 16,697
 50,450
 37,440
 5,811
 3,613
 4,686
 3,645
 
 
 
 
 
 
Anadarko Granite Wash 5,174
 2,534
 4,798
 1,910
 1,763
 653
 320
 204
Other Areas(1)
 9,763
 5,476
 1,314
 989
 280
 51
 
 
New Ventures(2)
 35,225
 11,935
 41,458
 39,846
 62,973
 48,898
 1,280
 930
Permian total 12,370
 9,053
 3,290
 2,449
 10,556
 9,772
 
 
Other properties 1,641
 2,418
 15,787
 10,902
 6,148
 4,122
 170
 170
Total 100,471
 54,614
 82,679
 70,273
 127,492
 97,370
 8,051
 4,907
 14,011
 11,471
 19,077
 13,351
 16,704
 13,894
 170
 170

(1)   Includes Eastern AnadarkoOf the total undeveloped acreage identified as expiring over the next four years, 40 net acres have associated PUD reserves, which we anticipate drilling to hold the associated leases. These PUD reserves represent an insignificant amount of our overall PUD reserves.
Of the 3,165 net acres of leasehold that were identified at December 31, 2014 as attributable to PUD reserves and Central Texas Panhandle.
(2)   Includes Dalhart Basin and other New Ventures.potentially expiring, 80 net acres actually expired in 2015. As of December 31, 2015, the locations from those expired acres were no longer classified as PUD reserves. The remainder of such acreage was retained either through lease extensions or drilling.
Drilling activity
The following table summarizes our drilling activity for the yearyears ended December 31, 2012, 20112015, 2014 and 2010.2013. Gross wells reflect the sum of all wells in which we own an interest. Net wells reflect the sum of our working interests in gross wells.
  2012 2011 2010
  Gross Net Gross Net Gross Net
Development wells:            
Productive 199
 183.2
 260
 233.2
 294
 276.6
Dry 
 
 
 
 2
 2.0
Total development wells 199
 183.2
 260
 233.2
 296
 278.6
Exploratory wells: 
 
 
 
 
 
Productive 1
 1.0
 2
 1.4
 11
 9.3
Dry 1
 0.9
 
 
 1
 1.0
Total exploratory wells 2
 1.9
 2
 1.4
 12
 10.3
Marketing and major customers
We market the majority of production from properties we operate for both our account and the account of the other working interest owners in our operated properties. We sell substantially all of our production to a variety of purchasers under contracts ranging from one month to several years, all at market prices. We normally sell production to a relatively small number of customers, as is customary in the exploration, development and production business. We have committed a portion of our Permian crude oil production under firm transportation agreements which will enhance our ability to move our crude oil out of the Permian Basin and give us access to more favorable Gulf Coast pricing.
As of December 31, 2012, we were committed to deliver the following fixed quantities of production under certain contractual arrangements that specify the delivery of a fixed and determinable quantity.
  Total 2013 2014 2015 2016 and beyond
Oil and condensate (MBbl) 53,265
 1,800
 6,585
 9,490
 35,390
Natural gas (MMcf) 7,022
 970
 1,803
 2,096
 2,153
Total (MBOE) 54,435
 1,962
 6,886
 9,839
 35,749
We expect to fulfill our delivery commitments over the next three years with production from our proved developed reserves. We expect to fulfill our longer-term delivery commitments beyond three years primarily with our proved undeveloped reserves.

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Our proved reserves have been sufficient to satisfy our delivery commitments during the three most recent years, and we expect such reserves will continue to satisfy our future commitments. However, should our proved reserves not be sufficient to satisfy our delivery commitments, we can and may use spot market purchases to fulfill the commitments.
Based on the current demand for oil and natural gas and the availability of alternate purchasers, we believe that the loss of any one of our major purchasers would not have a material adverse effect on our financial condition and results of operations. For information regarding each of our customers that accounted for 10% or more of our oil and natural gas revenues during the last three calendar years, see Note H in our audited consolidated financial statements included elsewhere in this Annual Report on From 10-K. See " Item 1A. Risk Factors—Risks related to our business—The inability of our significant customers to meet their obligations to us may materially adversely affect our financial results."
  2015 2014 2013
  Gross Net Gross Net Gross Net
Development wells:            
Productive 93
 80.4
 219
 183.9
 171
 127.2
Dry 
 
 
 
 
 
Total development wells 93
 80.4
 219
 183.9
 171
 127.2
Exploratory wells:            
Productive 2
 2.0
 2
 1.8
 2
 2.0
Dry 
 
 1
 1.0
 
 
Total exploratory wells 2
 2.0
 3
 2.8
 2
 2.0
Title to properties
We believe that we have satisfactory title to all of our producing properties in accordance with generally accepted industry standards. As is customary in the industry, in the case of undeveloped properties, often cursory investigation of record title is made at the time of lease acquisition. Investigations are made before the consummation of an acquisition of producing properties and before commencement of drilling operations on undeveloped properties. Individual properties may be subject to burdens that we believe do not materially interfere with the use or affect the value of the properties. Burdens on properties may include customary royalty interests, liens incident to operating agreements and for current taxes, obligations or duties under applicable laws, development obligations under naturaloil and gas leases or net profits interests.
Oil and natural gas leases
The typical oil and natural gas lease agreement covering our properties provides for the payment of royalties to the mineral owner for all oil and natural gas produced from any wells drilled on the leased premises. The lessor royalties and other

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leasehold burdens on our properties generally range from 12.5% to 25%, resulting in a net revenue interest to us generally ranging from 75% to 87.5%. As of December 31, 2012, 41%2015, 70% of all of our net leasehold acreage was held by production and 81% of our Permian-Garden City acreage was held by production.
Seasonality
Demand for oil and natural gas generally decreases during the spring and fall months and increases during the summer and winter months. However, seasonal anomalies such as mild winters or mild summers sometimes lessen this fluctuation. In addition, certain natural gas users utilize natural gas storage facilities and purchase some of their anticipated winter requirements during the summer. This can also lessen seasonal demand fluctuations. These seasonal anomalies can increase competition for equipment, supplies and personnel during the spring and summer months, which could lead to shortages and increase costs or delay our operations.
Competition
The oil and natural gas industry is intensely competitive, and we compete with othera wide range of companies in our industry, including those that have greater resources than we do especially in our focus areas.and those that are smaller with fewer ongoing obligations. Many of thesethe larger companies not only explore for and produce oil and natural gas, but also carry on refining operations and market petroleum and other products on a regional, national or worldwide basis. Many of the smaller companies have a lower cost structure and more liquidity. These companies may be able to pay more for productive properties and exploratory locations or define, evaluate, bid for and purchase a greater number of properties and locations than our financial or human resources permit and may be able to expend greater resources to attract and maintain industry personnel. In addition, these companies may have a greater ability to continue exploration and developmentproduction activities during periods of low market prices. Our larger competitors may be able to absorb the burden of existing, and any changes to, federal, state and local laws and regulations more easily than we can, which would adversely affect our competitive position. Our ability to acquire additional properties and to discover reserves in the future will be dependent upon our ability to evaluate and select suitable properties and to consummate transactions in a highly competitive environment. In addition, because weof the inherent advantages of some of our competitors, those companies may have fewer financial and human resources than many companies in our industry, we may be at a disadvantagean advantage in bidding for exploratory locations and producing properties.

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Hydraulic fracturing
We use hydraulic fracturing as a means to maximize the productivity of almost every well that we drill and complete. Hydraulic fracturing is a necessary part of the completion process for our producing properties in Texas and Oklahoma because our properties are dependent upon our ability to effectively fracture the producing formations in order to produce at economic rates. We are currently conducting hydraulic fracturing activity in the completion of both our vertical and horizontal wells in the Permian Basin and the Anadarko Granite Wash.Basin. While hydraulic fracturing is not required to maintain 41%any of our leasehold acreage that is currently held by production from existing wells, it will be required in the future to develop the proved non-producing and proved undeveloped reserves associated with this acreage. Nearly all of our proved developed non-producing and proved undeveloped reserves associated with future drilling, recompletion and refracture stimulation projects or approximately 59% of our total estimated proved reserves as of December 31, 2012, require hydraulic fracturing.
We have and continue to follow standard industry practices and applicable legal requirements. State and federal regulators (including the U.S. Bureau of Land Management on federal acreage) impose requirements on our operations designed to ensure protection of human health and the environment. These protective measures include setting surface casing at a depth sufficient to protect fresh water zones, and cementing the well to create a permanent isolating barrier between the casing pipe and surrounding geological formations. It is believed that this well design effectively eliminates a pathway for the fracturing fluid to contact any aquifers during the hydraulic fracturing operations. For recompletions of existing wells, the production casing is pressure tested prior to perforating the new completion interval.
Injection rates and pressures are monitored instantaneously and in real time at the surface during our hydraulic fracturing operations. Pressure is monitored on both the injection string and the immediate annulus to the injection string. Hydraulic fracturing operations would be shut down immediately if an abrupt change occurred to the injection pressure or annular pressure.
Certain state regulations require disclosure of the components in the solutions used in hydraulic fracturing operations. Approximately 99% of the hydraulic fracturing fluids we use are made up of water and sand. The remainder of the constituents in the fracturing fluid are managed and used in accordance with applicable requirements. In accordance with Texas regulations, we report the constituents of the hydraulic fracturing fluids utilized in our well completions on FracFocus (www.fracfocus.org). Hydraulic fracture stimulation requires the use of a significant volume of water. Upon flowback of the water, we dispose of it by dischargerecycling or by discharging into approved disposal wells, so as to minimize the potential for impact to nearby surface water.

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We currently do not discharge water to the surface. We are inBased upon results of testing the processperformance of testing recycled flowback/produced water in our fracing operations and are evaluating the performance of theon a limited number of wells, in which we have used this process to determine if there is any impactconstructed and operate a water recycle facility on productivity.one of our production corridors and anticipate expanding our recycling activities in the future.
For information regarding existing and proposed governmental regulations regarding hydraulic fracturing and related environmental matters, please read "—Regulation"-Regulation of environmental and occupational health and safety matters—Watermatters-Water and other waste discharges and spills." For related risks to our stockholders, please read "Item 1A. Risk Factors—Risks related to our business—Federal and state legislation and regulatory initiatives relating to hydraulic fracturing and water disposal wells could prohibit projects or result in materially increased costs and additional operating restrictions or delays because of the significance of hydraulic fracturing and water disposal wells in our business."
Regulation of the oil and natural gas industry
Our operations are substantially affected by federal, state and local laws and regulations. In particular, natural gas production and related operations are, or have been, subject to price controls, taxes and numerous other laws and regulations. AllThe state of the jurisdictions in which we own or operate producing oil and natural gas properties haveTexas has statutory provisions regulating the exploration for and production of oil and natural gas, including provisions related to permits for the drilling of wells, bonding requirements to drill or operate wells, the location of wells, the method of drilling and casing wells, the surface use and restoration of properties upon which wells are drilled, sourcing and disposal of water used in the drilling and completion process and the abandonment of wells. Our operations are also subject to various conservation laws and regulations. These include the regulation of the size of drilling and spacing units or proration units, the number of wells which may be drilled in an area and the unitization or pooling of crude oil and natural gas wells, as well as regulations that generally prohibit the venting or flaring of natural gas and impose certain requirements regarding the ratability or fair apportionment of production from fields and individual wells.
Failure to comply with applicable laws and regulations can result in substantial penalties. The regulatory burden on the industry increases the cost of doing business and affects profitability. Additional proposals and proceedings that affect the natural gas industry are regularly considered by Congress, the states, the Environmental Protection Agency ("EPA"), Federal Energy Regulatory Commission ("FERC") and the courts. We cannot predict when or whether any such proposals may become effective.

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We believe we are in substantial compliance with currently applicable laws and regulations and that continued substantial compliance with existing requirements will not have a material adverse effect on our financial position, cash flows or results of operations. However, current regulatory requirements may change, currently unforeseen environmental incidents may occur or past non-compliance with environmental laws or regulations may be discovered, and such laws and regulations are frequently amended or reinterpreted. Therefore, we are unable to predict the future costs or impacts of compliance.
Regulation of production of oil and natural gas
The production of oil and natural gas is subject to regulation under a wide range of local, state and federal statutes, rules, orders and regulations. Federal, state and local statutes and regulations require permits for drilling operations, drilling bonds and reports concerning operations. AllThe State of the states in which we own and operate properties haveTexas has regulations governing conservation matters, including provisions for the unitization or pooling of oil and natural gas properties, including the permitting of allocation wells, the establishment of maximum allowable rates of production from oil and natural gas wells, the regulation of well spacing and plugging and abandonment of wells. The effect of these regulations is to limit the amount of oil and natural gas that we can produce from our wells and to limit the number of wells or the locations at which we can drill, although we can apply for exceptions to such regulations or to have reductions in well spacing. Moreover, each state generallyTexas imposes a production or severance tax with respect to the production and sale of oil, natural gasNGL and natural gas liquids within its jurisdiction. We own interests in properties located onshore in different U.S. states. These states regulateTexas further regulates drilling and operating activities by requiring, among other things, permits for the drilling of wells, maintaining bonding requirements in order to drill or operate wells, and regulating the location of wells, the method of drilling and casing wells, the surface use and restoration of properties upon which wells are drilled and the plugging and abandonment of wells. TheState laws of these states also govern a number of environmental and conservation matters, including the handling and disposing or discharge of waste materials, the size of drilling and spacing units or proration units and the density of wells that may be drilled, unitization and pooling of oil and natural gas properties and establishment of maximum rates of production from oil and natural gas wells. Some states haveTexas further has the power to prorate production to the market demand for oil and natural gas. The failure to comply with these rules and regulations can result in substantial penalties. Our competitors in the oil and natural gas industry are subject to the same regulatory requirements and restrictions that affect our operations.

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Regulation of environmental and occupational health and safety matters
Our operations are subject to numerous stringent federal, state and local statutes and regulations governing the discharge of materials into the environment or otherwise relating to protection of the environment or occupational health and safety. Numerous governmental agencies, such as the EPA, issue regulations whichthat often require difficult and costly compliance measures, the noncompliance with which carries substantial administrative, civil and criminal penalties and may result in injunctive obligations to remediate noncompliance. These laws and regulations may require the acquisition of a permit before drilling commences, restrict the types, quantities and concentrations of various substances that can be released into the environment in connection with drilling, production and transporting through pipelines, govern the sourcing and disposal of water used in the drilling, completion and production process, limit or prohibit drilling activities in certain areas and on certain lands lying within wilderness, wetlands, frontier, seismically active areas and other protected areas, require some form of remedial action to prevent or mitigate pollution from current or former operations such as plugging abandoned wells or closing earthen pits, result in the suspension or revocation of necessary permits, licenses and authorizations, require that additional pollution controls be installed and impose substantial liabilities for pollution resulting from operations or failure to comply with regulatory filings. In addition, these laws and regulations may restrict the rate of production. Certain of these laws and regulations impose strict andliability (i.e., no showing of "fault" is required) that, in some circumstances, may be joint and several liability penalties that could impose liability upon us regardless of fault.several. Public interest in the protection of the environment has increased dramatically in recent years. The trend of more expansive and stringent environmental legislation and regulations applied to the oil and natural gas industry could continue, resulting in increased costs of doing business and consequently affecting profitability. Changes in environmental laws and regulations occur frequently, and to the extent laws are enacted or other governmental action is taken that restricts drilling or imposes more stringent and costly operating, waste handling, disposal and cleanupclean-up requirements, our business and prospects, as well as the oil and natural gas industry in general, could be materially adversely affected.
Hazardous substance and waste handling
Our operations are subject to environmental laws and regulations relating to the management and release of hazardous substances, solid and hazardous wastes, and petroleum hydrocarbons. These laws generally regulate the generation, storage, treatment, transportation and disposal of solid and hazardous waste and may impose strict and, in some cases, joint and several liability for the investigation and remediation of affected areas where hazardous substances may have been released or disposed. The Comprehensive Environmental Response, Compensation, and Liability Act, as amended, referred to as CERCLA or the Superfund law, and comparable state laws, impose liability, without regard to fault or the legality of the original conduct, on certain classes of persons deemed "responsible parties." These persons include current owners or operators of the site where a release of hazardous substances occurred, prior owners or operators that owned or operated the site at the time of the release

23



or disposal of hazardous substances, and companies that disposed or arranged for the disposal of the hazardous substances found at the site. Under CERCLA, these persons may be subject to strict and joint and several liability for the costs of cleaning up the hazardous substances that have been released into the environment, for damages to natural resources and for the costs of certain health studies. CERCLA also authorizes the EPA and, in some instances, third parties to act in response to threats to the public health or the environment and to seek to recover the costs they incur from the responsible classes of persons. Despite the "petroleum exclusion" of Section 101(14) of CERCLA, which currently encompasses natural gas, we may nonetheless handle hazardous substances within the meaning of CERCLA, or similar state statutes, in the course of our ordinary operations and, as a result, may be jointly and severally liable under CERCLA for all or part of the costs required to clean up sites at which these hazardous substances have been released into the environment. In addition, we may have liability for releases of hazardous substances at our properties by prior owners or operators or other third parties. Finally, it is not uncommon for neighboring landowners and other third parties to file common law based claims for personal injury and property damage allegedly caused by hazardous substances or other pollutants released into the environment.
The Oil Pollution Act of 1990 (the "OPA") is the primary federal law imposing oil spill liability. The OPA contains numerous requirements relating to the prevention of and response to petroleum releases into waters of the United States, including the requirement that operators of offshore facilities and certain onshore facilities near or crossing waterways must maintain certain significant levels of financial assurance to cover potential environmental cleanup and restoration costs. Under the OPA, strict, joint and several liability may be imposed on "responsible parties" for all containment and clean-up costs and certain other damages arising from a release, including, but not limited to, the costs of responding to a release of oil to surface waters and natural resource damages, resulting from oil spills into or upon navigable waters, adjoining shorelines or in the exclusive economic zone of the United States. A "responsible party" includes the owner or operator of an onshore facility. The OPA establishes a liability limit for onshore facilities, of $350 million. Thesebut these liability limits may not apply if: a spill is caused by a party's gross negligence or willful misconduct; the spill resulted from violation of a federal safety, construction or operating regulation; or a party fails to report a spill or to cooperate fully in a clean-up. We are also subject to analogous state statutes that impose liabilities with respect to oil spills. We also generate solid wastes, including hazardous wastes, which are subject to the requirements of the Resource Conservation and Recovery Act, as amended ("RCRA"), and comparable state statutes. Although

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RCRA regulates both solid and hazardous wastes, it imposes strict requirements on the generation, storage, treatment, transportation and disposal of hazardous wastes. Certain petroleum production wastes are excluded from RCRA's hazardous waste regulations. These wastes, instead, are regulated under RCRA's less stringent solid waste provisions, state laws or other federal laws. It is also possible however, that these wastes, which could include wastes currently generated during our operations, will be designated as "hazardous wastes" in the future and, therefore, be subject to more rigorous and costly disposal requirements. Indeed, legislation has been proposed from time to time in Congress to re-categorize certain oil and natural gas exploration and production wastes as "hazardous wastes." Any such changes in the laws and regulations could have a material adverse effect on our maintenance capital expenditures and operating expenses.
We believe that we are in substantial compliance with the requirements of CERCLA, RCRA, OPA and related state and local laws and regulations, and that we hold all necessary and up-to-date permits, registrations and other authorizations required under such laws and regulations. Although we believe that the current costs of managing our wastes as they are presently classified are reflected in our budget, any legislative or regulatory reclassification of oil and natural gas exploration and production wastes could increase our costs to manage and dispose of such wastes.
Water and other waste discharges and spills
The Federal Water Pollution Control Act, as amended, also known as the Clean Water Act, the Safe Drinking Water Act ("SDWA"), the OPA and comparable state laws impose restrictions and strict controls regarding the discharge of pollutants, including produced waters and other natural gas wastes, into federal and state waters. The discharge of pollutants into regulated waters is prohibited, except in accordance with the terms of a permit issued by the EPA or the state. The discharge of dredge and fill material in regulated waters, including wetlands, is also prohibited, unless authorized by a permit issued by the U.S. Army Corps of Engineers. The EPA has also adopted regulations requiring certain oil and natural gas exploration and production facilities to obtain individual permits or coverage under general permits for storm water discharges. Costs may be associated with the treatment of wastewater or developing and implementing storm water pollution prevention plans, as well as for monitoring and sampling the storm water runoff from certain of our facilities. Some statesThe State of Texas also maintainmaintains groundwater protection programs that require permits for discharges or operations that may impact groundwater conditions. The underground injection of fluids is subject to permitting and other requirements under state laws and regulation. Obtaining permits has the potential to delay the development of oil and natural gas projects. These same regulatory programs also limit the total volume of water that can be discharged, hence limiting the rate of development, and require us to incur compliance costs. These laws and any implementing regulations provide for administrative, civil and criminal penalties for any unauthorized discharges of oil and other substances in reportable quantities and may impose substantial potential liability for the costs of removal, remediation and damages. Pursuant to these laws and regulations, we may be required to obtain and maintain approvals or permits for the discharge of wastewater or storm water and the underground injection of fluids and are required to develop and implement spill prevention, control and countermeasure plans, also referred to as "SPCC plans," in

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connection with on-site storage of significant quantities of oil. We maintain all required discharge permits necessary to conduct our operations, and we believe we are in substantial compliance with their terms.
Hydraulic fracturing is a practice that is used to stimulate production of hydrocarbons particularly natural gas, from tight formations. The process involves the injection of water, sand and chemicals under pressure into the formation to fracture the surrounding rock and stimulate production. AlthoughThe SDWA regulates the underground injection of substances through the Underground Injection Control Program (the "UIC"). However, hydraulic fracturing has historically beenis generally exempt from regulation under the UIC, and thus the process is typically regulated by state oil and gas commissions,commissions. Nevertheless, the EPA recentlyhas asserted federal regulatory authority over the processhydraulic fracturing involving diesel additives under the SDWA's Underground Injection Control ("UIC") Program.UIC. Under this assertion of authority, the EPA requires facilities to obtain permits to use diesel fuel in hydraulic fracturing operations, specifically in Class II wells, which are those wells injecting fluids associated with oil and natural gas production activities. The U.S. Energy Policy Act of 2005, which exempts hydraulic fracturing from regulation under the SDWA, prohibits the use of diesel fuel in the fracturing process without a UIC permit. On May 4, 2012,February 12, 2014, the EPA published a draftrevised UIC Program permitting guidance for oil and natural gas hydraulic fracturing activities using diesel fuel. The guidance document is designed for use by EPA UIC permit writers, and describes how Class II regulations may be tailored to address the purported unique risks of diesel fuel injection during the hydraulic fracturing process. Although the EPA is not the permitting authority for UIC Class II programs in Texas, and Oklahoma, where we maintain acreage, the EPA is encouraging state programs to review and consider use of this permit guidance. The draft guidance document underwent an extended public comment process, which concluded on August 23, 2012. The EPA is presently evaluating the public comments and will likely issue a final guidance document at a later date. On November 3, 2011, the EPA released its Plan to Study the Potential ImpactsFurthermore, legislation has been proposed in recent sessions of Hydraulic Fracturing on Drinking Water Resources. The study will include both analysis of existing data and investigative activities designed to generate future data. The EPA issued a progress report in December 2012, and expects to release a final report for public comment and peer review in 2014. In addition, legislation is pending in Congress to repeal the hydraulic fracturing exemption from the SDWA, provide for federal regulation of hydraulic fracturing and require public disclosure of the chemicals used in the fracturing process, and such legislation could be introducedprocess.
In addition, in the current session of Congress. Finally, on October 20, 2011,May 2014, the EPA announcedissued an Advanced Notice of Proposed Rulemaking seeking public comment on its planintent to proposedevelop and issue regulations under the Toxic Substances Control Act regarding the disclosure of information related to the chemicals used in hydraulic fracturing. The public comment period ended on September 18, 2014. The EPA plans to develop a Notice of Proposed Rulemaking by December 2016, which would describe a proposed mechanism-regulatory,

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voluntary or a combination of both-to collect data on hydraulic fracturing chemical substances and mixtures. Moreover, the EPA is examining regulatory requirements for "indirect dischargers" of wastewater (i.e., those that send their discharges to private or publicly owned treatment facilities, which treat the wastewater before discharging it to regulated waters). On April 7, 2015, the EPA published a proposed rule establishing federal pre-treatment standards for wastewater generated during the hydraulic fracturing process. Hydraulic fracturing stimulation requires the use of a significant volume of water with some resulting "flowback," as well as "produced water."discharged from onshore unconventional oil and gas extraction facilities to publicly owned treatment works ("POTWs"). The EPA asserts that this waterwastewater from such facilities can be generated in large quantities and can contain constituents that may contain radioactive materials and other pollutants and, therefore, may deteriorate drinking water quality if not properly treated before discharge. The Clean Water Act prohibitsdisrupt POTW operations and/or be discharged, untreated, from the discharge of wastewater into federal or state waters. Thus, "flowback" and "produced water" must either be injected into permitted disposal wells, transportedPOTW to public or private treatment facilities for treatment, or recycled. The EPA asserts that due to some contaminants in hydraulic fracturing wastewater, most treatment facilities are unable to treat the wastewater before introducing it into publicreceiving waters. If adopted, the new pre-treatment rules willrule would require shaleunconventional oil and gas operationsfacilities to pre-treat wastewater before transferring it to POTWs. The public comment period ended on July 17, 2015, and the EPA is expected to publish a final rule by August 2016. The EPA is also conducting a study of private wastewater treatment facilities. Proposed rules are expected in 2013 for coalbed methanefacilities (also known as centralized waste treatment, or CWT, facilities) accepting oil and 2014 for shale gas.gas extraction wastewater. The EPA is collecting data and information related to the extent to which CWT facilities accept such wastewater, available treatment technologies (and their associated costs), discharge characteristics, financial characteristics of CWT facilities, and the environmental impacts of discharges from CWT facilities. We cannot predict the impact that these standards may have on our business at this time, but these standards could have a material impact on our business, financial condition and results of operation.
Also, on March 26, 2015, the Bureau of Land Management (the "BLM") published a final rule governing hydraulic fracturing on federal and Indian lands. The rule requires public disclosure of chemicals used in hydraulic fracturing, implementation of a casing and cementing program, management of recovered fluids, and submission to the BLM of detailed information about the proposed operation, including wellbore geology, the location of faults and fractures, and the depths of all usable water. The rule took effect on June 24, 2015, although it is the subject of several pending lawsuits filed by industry groups and at least four states, alleging that federal law does not give the BLM authority to regulate hydraulic fracturing. On September 30, 2015, the United States District Court for Wyoming issued a preliminary injunction preventing the BLM from implementing the rule nationwide. This order has been appealed to the Tenth Circuit Court of Appeals.
Furthermore, there are certain governmental reviews either underway or being proposed that focus on environmental aspects of hydraulic fracturing practices. For example, the EPA has commenced a study of the potential adverse effects that hydraulic fracturing may have on water quality and public health. In June 2015, the EPA released its draft assessment report for peer review and public comment, finding that, while there are certain mechanisms by which hydraulic fracturing activities could potentially impact drinking water resources, there is no evidence available showing that those mechanisms have led to widespread, systemic impacts. Also, on February 6, 2015, the EPA released a report with findings and recommendations related to public concern about induced seismic activity from disposal wells. The report recommends strategies for managing and minimizing the potential for significant injection-induced seismic events. Other governmental agencies, including the U.S. Department of Energy, the U.S. Geological Survey, and the U.S. Government Accountability Office, have evaluated or are evaluating various other aspects of hydraulic fracturing. These ongoing or proposed studies, depending on their degree of pursuit and any meaningful results obtained, could spur initiatives to further regulate hydraulic fracturing under the SDWA or other regulatory mechanism.
Some states have adopted, and other states are considering adopting, regulations that could restrict hydraulic fracturing in certain circumstances or otherwise require the public disclosure of chemicals used in the hydraulic fracturing process. For example, pursuant to legislation adopted by the State of Texas in June 2011, beginning February 1, 2012, companies were required to disclose to the RRC and the public the chemical components used in the hydraulic fracturing process, as well as the volume of water used. Additionally, on October 28, 2014, the RRC adopted disposal well rule amendments designed, among other things, to require applicants for new disposal wells that will receive non-hazardous produced water and hydraulic fracturing flowback fluid to conduct seismic activity searches utilizing the U.S. Geological Survey. The searches are intended to determine the potential for earthquakes within a circular area of 100 square miles around a proposed, new disposal well. The disposal well rule amendments, which became effective on November 17, 2014, also clarify the RRC's authority to modify, suspend or terminate a disposal well permit if scientific data indicates a disposal well is likely to contribute to seismic activity. The RRC has used this authority to deny permits for waste disposal wells. Also, in May 2013, the RRC adopted new rules governing well casing, cementing and other standards for ensuring that hydraulic fracturing operations do not contaminate nearby water resources. The new rules took effect in January 2014. In addition to state law, local land use restrictions, such as city ordinances, may restrict or prohibit the performance of well drilling in general and/or hydraulic fracturing in particular. Furthermore, on May 4, 2012, the the United States Department of the Interior ("DOI") issued a draft rule that seeks to require companies operating on federal and Indian lands to (i) publicly disclose the chemicals used in the hydraulic fracturing process; (ii) confirm its wells meet certain construction standards and (iii) establish site plans to manage flowback water. Under current federal law, there is no requirement for operators to disclose the use of such chemicals, although Laredo has already commenced similar disclosure with state regulators.
If these or any other new laws or regulations that significantly restrict hydraulic fracturing are adopted, such laws could make it more difficult or costly for us to drill and produce from tight formations as well as make it easier for third parties opposing the hydraulic fracturing process to initiate legal proceedings. In addition, if hydraulic fracturing is regulated at the federal level, fracturing activities could become subject to additional permitting and financial assurance requirements, more stringent construction specifications, increased monitoring, reporting and recordkeeping obligations, plugging and abandonment requirements and also to attendant permitting delays and potential increases in costs. These developments, as well

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as new laws or regulations, could cause us to incur substantial compliance costs, and compliance or the consequences of failure to comply by us could have a material adverse effect on our financial condition and results of operations. At this time, it is not possible to estimate the potential impact on our business that may arise if federal or state legislation governing hydraulic fracturing is enacted into law.

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Air emissions
The federal Clean Air Act, as amended, and comparable state laws restrict the emission of air pollutants from many sources, including compressor stations, through the issuance of permits and the imposition of other requirements. In addition, the EPA has developed, and continues to develop, stringent regulations governing emissions of toxic air pollutants at specified sources. In August 2012, the EPA adoptedpublished final rules that subject oil and natural gas production, processing, transmission, and storage operations to regulation under the New Source Performance Standards or NSPS,("NSPS") and National Emission Standards for Hazardous Air Pollutants or NESHAP, programs.("NESHAP"). The rule includes NSPS standards for completions of hydraulically fractured gas wells and establishes specific new requirements for emissions from compressors, controllers, dehydrators, storage vessels, natural gas processing plants and certain other equipment. The final rule became effective October 15, 2012; however,seeks to achieve a number95% reduction in volatile organic compounds ("VOC") emitted by requiring the use of the requirements did not take immediate effect. The final rule establishes a phase-in period to allow for the manufacture and distribution of required emissions reduction technology. During the first phase, ending December 31, 2014, owners and operators of gas wells must either flare their emissionsreduced emission completions or use emissions reduction technology called "green completions" technologies already deployed at wells. Onon all hydraulically-fractured wells constructed or refractured after January 1, 2015. The EPA received numerous requests for reconsideration of these rules from both industry and the environmental community, and court challenges to the rules were also filed. In response, the EPA has issued, and will likely continue to issue, revised rules responsive to some of these requests for reconsideration. For example, in September 2013 and December 2014, the EPA amended its rules to extend compliance deadlines and to clarify the NSPS. Further, on July 31, 2015, all newly fracturedthe EPA finalized two updates to the NSPS to address the definition of low-pressure wells and references to tanks that are connected to one another (referred to as connected in parallel). In addition, on September 18, 2015, the EPA published a suite of proposed rules to reduce methane and VOC emissions from the oil and gas wells will be requiredindustry, including new "downstream" requirements covering equipment in the natural gas transmission segment of the industry that was not regulated by the 2012 rules. The public comment period closed on December 4, 2015. Also, on January 22, 2016, the BLM announced a proposed rule to reduce the flaring, venting and leaking of methane from oil and gas operations on federal and Indian lands. The proposed rule would require operators to use green completions. Controlscurrently available technologies and equipment to reduce flaring, periodically inspect their operations for certain storage vesselsleaks, and pneumatic controllers may phase-in over one year beginning onreplace outdated equipment that vents large quantities of gas into the dateair. The rule would also clarify when operators owe the final rule is published in the Federal Register, while certain compressors, dehydrators and other equipment must comply with the final rule immediately or up to three years and 60 days after publication of the final rule, depending on the construction date and/or nature of the unit. We continue to evaluate the EPA's final rule, as it may require changes to our operations, including the installation of new emissions control equipment.government royalties for flared gas. These standards, as well as any future laws and their implementing regulations, may require us to obtain pre-approval for the expansion or modification of existing facilities or the construction of new facilities expected to produce air emissions, impose stringent air permit requirements, or utilize specific equipment or technologies to control emissions. Our failure to comply with these requirements could subject us to monetary penalties, injunctions, conditions or restrictions on operations and, potentially, criminal enforcement actions.
We have incurred additional capital expenditures to insure compliance with these new regulations as they come into effect. We may also be required to incur additional capital expenditures in the next few years for air pollution control equipment in connection with maintaining or obtaining operating permits addressing other air emission related issues, which may have a material adverse effect on our operations. Obtaining permits also has the potential to delay the development of oil and natural gas projects. We believe that we currently are in substantial compliance with all air emissions regulations and that we hold all necessary and valid construction and operating permits for our current operations.
Regulation of "greenhouse gas" emissions
Recent scientific studies have suggested that emissions of certain gases, commonly referred to as "greenhouse gases" ("GHGs") and including carbon dioxide and methane, may be contributing to warming of the earth's atmosphere and other climatic changes. In response to such studies, Congress has from time to time considered legislation to reduce emissions of GHGs. One bill approved by the House of Representatives in June 2009, known as the American Clean Energygreenhouse gases ("GHGs") and Security Act of 2009 would have required an 80% reduction in emissions of GHGs from sources within the U.S. between 2012 and 2050, but it was not approved by the U.S. Senate in the 2009-2010 legislative session. Congress is likely to continue to consider similar bills. Moreover, almost halfone-half of the states have already taken legal measures to reduce emissions of GHGs through the planned development of GHG emission inventories and/or regional GHG cap and trade programs, or other mechanisms, although in recent years some states have scaled back their commitment to GHG initiatives. Most cap and trade programs work by requiring major sources of emissions, such as electric power plants, or major producers of fuels, such as refineries and gas processing plants, to acquire and surrender emission allowances corresponding with their annual emissions of GHGs. The number of allowances available for purchase is reduced each year until the overall GHG emission reduction goal is achieved. As the number of GHG emission allowances declines each year, the cost or value of allowances is expected to escalate significantly. Some states have enacted renewable portfolio standards, which require utilities to purchase a certain percentage of their energy from renewable fuel sources.
In addition, in December 2009, the EPA determined that emissions of carbon dioxide, methane and other GHGs present an endangerment to human health and the environment, because emissions of such gases are, according to the EPA, contributing to warming of the earth's atmosphere and other climatic changes. These findings by the EPA allow the agency to proceed with the adoption and implementation of regulations that would restrict emissions of GHGs under existing provisions of the federal Clean Air Act. In response to its endangerment finding, the EPA recently adopted two sets of rules regarding possible

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future regulation of GHG emissions under the Clean Air Act. The motor vehicle rule, which became effective in January 2011,July 2010, purports to limit emissions of GHGs from motor vehicles manufactured in model years 2012-2016; however, it does not require immediate reductions in GHG emissions. A recent rulemaking proposal by the EPA and the Department of Transportation's National Highway Traffic Safety Administration seeks to expand the motor vehicle rule to include vehicles manufactured in model years 2017-2025.vehicles. The EPA adopted the stationary source rule (or the "tailoring rule") in May 2010, and it also became effective in January 2011, although it remains the subject of several pending lawsuits filed by industry groups.2011. The

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tailoring rule establishesestablished new GHG emissions thresholds that determine when stationary sources must obtain permits under the Prevention of Significant Deterioration or PSD,("PSD") and Title V programs of the Clean Air Act. On June 23, 2014, in Utility Air Regulatory Group v. EPA ("UARG v. EPA"), the Supreme Court held that stationary sources could not become subject to PSD or Title V permitting solely by reason of their GHG emissions. The permitting requirementsCourt ruled, however, that the EPA may require installation of the PSD program apply only to newly constructed or modified major sources. Obtaining a PSD permit requires a source to install best available control technology or BACT, for those regulated pollutants that are emittedGHG emissions at sources otherwise subject to the PSD and Title V programs. On December 19, 2014, the EPA issued two memoranda providing initial guidance on GHG permitting requirements in certain quantities. Phase Iresponse to the Court's decision in UARG v. EPA. In its preliminary guidance, the EPA indicated it would promulgate a rule to rescind any PSD permits issued under the portions of the tailoring rule which became effective on January 2, 2011, requires projects already triggering PSD permitting that are also increasing GHG emissionswere vacated by more than 75,000 tons per yearthe Court. In the interim, the EPA issued a narrowly crafted "no action assurance" indicating it will exercise its enforcement discretion not to comply with BACT rules for their GHG emissions. Phase IIpursue enforcement of the tailoringterms and conditions relating to GHGs in an EPA-issued PSD permit, and for related terms and conditions in a Title V permit. On April 30, 2015, the EPA issued a final rule which became effective on July 1, 2011, requires preconstructionallowing permitting authorities to rescind PSD permits using BACT for new projects that emit 100,000 tons of GHG emissions per year or existing facilities that make major modifications increasing GHG emissions by more than 75,000 tons per year. Phase III ofissued under the tailoring rule, which is expected to go into effect in 2013, will seek to streamline the permitting process and permanently exclude smaller sources from the permitting process. Finally, in Octoberinvalid regulations.
In September 2009, the EPA issued a final rule requiring the reporting of GHG emissions from specified large GHG emission sources in the U.S., including natural gas liquidsNGL fractionators and local natural gas/distribution companies, beginning in 2011 for emissions occurring in 2010. In November 2010, the EPA published a final rule expanding the GHG reporting rule to include onshore oil and natural gas production, processing, transmission, storage and distribution facilities. This rule requires reporting of GHG emissions from such facilities on an annual basis, with reporting beginning in 2012 for emissions occurring in 2011. On March 27, 2012,In October 2015, the EPA issuedamended the GHG reporting rule to add reporting of GHG emissions from gathering and boosting systems, completions and workovers of oil wells using hydraulic fracturing, and blowdowns of natural gas transmission pipelines.
The EPA has continued to adopt GHG regulations applicable to other industries, such as its August 2015 adoption of three separate, but related, actions to address carbon dioxide pollution from power plants, including final Carbon Pollution Standards for new, modified and reconstructed power plants, a final Clean Power Plan to cut carbon dioxide pollution from existing power plants, and a proposed rule establishing carbon pollution standards for new fossil-fuel-fired electric utility generating units. The proposed rule underwent an extended public comment process, which concluded on June 25, 2012. The EPA is presently evaluating the public comments and is expected to issue a final rule at a later date. The EPA plansfederal plan to implement the Clean Power Plan emission guidelines. Upon publication of the Clean Power Plan on October 23, 2015, more than two dozen States as well as industry and labor groups challenged the Clean Power Plan in the D.C. Circuit Court of Appeals. On February 9, 2016, the U.S. Supreme Court stayed the Clean Power Plan pending disposition of the legal challenges. Nevertheless, as a result of the continued regulatory focus, future GHG regulations of the oil and gas industry remain a possibility.
In December 2015, the United States joined the international community at the 21st Conference of the Parties ("COP-21") of the United Nations Framework Convention on Climate Change in Paris, France. The resulting Paris Agreement calls for the parties to undertake "ambitious efforts" to limit the average global temperature, and to conserve and enhance sinks and reservoirs of GHGs. The Paris Agreement, if ratified, establishes a framework for the parties to cooperate and report actions to reduce GHG emissions.
Restrictions on GHG emissions standards for refineries at a later date.
that may be imposed could adversely affect the oil and gas industry. The adoption of legislation or regulatory programs to reduce GHG emissions could require us to incur increased operating costs, such as costs to purchase and operate emissions control systems, to acquire emissions allowances or comply with new regulatory requirements. Any GHG emissions legislation or regulatory programs applicable to power plants or refineries could also increase the cost of consuming, and thereby reduce demand for, the oil and natural gas we produce. Consequently, legislation and regulatory programs to reduce GHG emissions could have an adverse effect on our business, financial condition and results of operations.
In addition, claims have been made against certain energy companies alleging that GHG emissions from oil and natural gas operations constitute a public nuisance under federal and/or state common law. As a result, private individuals may seek to enforce environmental laws and regulations against us and could allege personal injury or property damages. While our business is not a party to such litigation, we could be named in actions making similar allegations. An unfavorable ruling in any such case could significantly impact our operations and could have an adverse impact on our financial condition.
Moreover, there has been public discussion that climate change may be associated with extreme weather conditions such as more intense hurricanes, thunderstorms, tornados and snow or ice storms, as well as rising sea levels. Another possible consequence of climate change is increased volatility in seasonal temperatures. Some studies indicate that climate change could cause some areas to experience temperatures substantially colder than their historical averages. Extreme weather conditions can interfere with our production and increase our costs and damage resulting from extreme weather may not be fully insured.

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However, at this time, we are unable to determine the extent to which climate change may lead to increased storm or weather hazards affecting our operations.
Occupational safetySafety and health actHealth Act
We are also subject to the requirements of the federal Occupational Safety and Health Act, as amended ("OSHA") and comparable state laws that regulate the protection of the health and safety of employees. In addition, OSHA's hazard communication standard requires that information be maintained about hazardous materials used or produced in our operations and that this information be provided to employees, state and local government authorities and citizens. We believe that our operations are in substantial compliance with the OSHA requirements.
National environmental policy actEnvironmental Policy Act
Oil and natural gas exploration and production activities on federal lands are subject to the National Environmental Policy Act ("NEPA"). NEPA requires federal agencies, including the Departments of Interior and Agriculture, to evaluate major agency actions having the potential to significantly impact the environment. In the course of such evaluations, an agency prepares an environmental assessment to evaluate the potential direct, indirect and cumulative impacts of a proposed project. If impacts are considered significant, the agency will prepare a more detailed environmental impact study that is made available for public review and comment. All of our current exploration and production activities, as well as proposed exploration and development plans, on federal lands require governmental permits that are subject to the requirements of NEPA. This environmental impact assessment process has the potential to delay the development of oil and natural gas projects. Authorizations under NEPA also are subject to protest, appeal or litigation, which can delay or halt projects.
Endangered species actSpecies Act
The Endangered Species Act ("ESA") was established to protect endangered and threatened species. Pursuant to the ESA, if a species is listed as threatened or endangered, restrictions may be imposed on activities adversely affecting that species' habitat. Similar protections are offered to migratory birds under the Migratory Bird Treaty Act. We conduct operations on federal oil and natural gas leases in areas where certain species, such as the lesser prairie chicken, that are listed as threatened or endangered and where other species, such as the sage grouse, that potentially could be listed as threatened or endangered under the ESA exist. The U.S. Fish and Wildlife Service may designate critical habitat and suitable habitat areas that it believes are necessary for survival of a threatened or endangered species. A critical habitat or suitable habitat designation could result in further material restrictions to federal land use and may materially delay or prohibit land access for oil and natural gas development. If we were to have a portion of our leases designated as critical or suitable habitat, it could cause us to incur additional costs or become subject to operating restrictions or bans in the affected areas, which could adversely impact the value of our leases.

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Summary
In summary, we believe we are in substantial compliance with currently applicable environmental laws and regulations. Although we have not experienced any material adverse effect from compliance with environmental requirements, there is no assurance that this will continue. We did not have any material capital or other non-recurring expenditures in connection with complying with environmental laws or environmental remediation matters in 20112015, 2014 or 2012.2013.
Disclosures required pursuant to Section 13(r) of the Securities Exchange Act of 1934
Under the Iran Threat Reduction and Syrian Human Rights Act of 2012 (the “Act”), which addedPursuant to Section 13(r) of the Exchange Act, we are required to include certain disclosures in our periodic reports if we or any of our “affiliates”"affiliates" (as defined in Rule 12b-2 under the Exchange Act) knowingly engaged in certain specified activities, transactions or dealings relating to Iran or with certain individuals or entities targeted by United States' economic sanctions during the period covered by the report. Disclosure is generally required even where the activities, transactions or dealings were conducted in compliance with applicable law. Neither we nor any of our controlled affiliates or subsidiaries knowingly engaged in any of the specified activities relating to Iran or otherwise engaged in any activities associated with Iran during the reporting period. However, because the SEC defines the term “affiliate”"affiliate" broadly, it includes any entity controlled by us as well as any person or entity that controlled us or is under common control with us.
During 2012,The description of the activities below has been provided to us by Warburg Pincus, was, and currently is, our largest stockholder (owning approximately 68%affiliates of which: (i) beneficially own more than 10% of our outstanding common stock as of the date of this report) and twoare members of our board of directors are with Warburg Pincus.  Consequently Warburg Pincus was our “affiliate” during the reporting period. Moreover, Warburg Pincus has informed us that it ownsand (ii) beneficially own more than 10% of the equity interests of, and have the right to designate members of the board of directors of, Bausch & Lomb Incorporated (“Bausch & Lomb”Endurance International Group ("Endurance") and Santander Asset Management Investment Holdings Limited ("SAMIH"). Consequently, Bausch & LombEndurance

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and SAMIH may therefore be viewed as our “affiliate”deemed to be under Rule 12b-2.  Warburg Pincus has informed us"common control" with us; however, this statement is not meant to be an admission that Bausch & Lomb has provided it with the below information relevant to Section 13(r).  common control exists.
The disclosure below relates solely to activities conducted by Bausch & LombEndurance and its non-U.S. affiliatesSAMIH and their respective affiliates. The disclosure does not relate to any activities conducted by usLaredo or by Warburg Pincus and does not involve our or Warburg Pincus' management. Neither usLaredo nor Warburg Pincus had any involvement in or control over the disclosed activities of Endurance or SAMIH, and neither Laredo nor Warburg Pincus has independently verified or participated in the preparation of the disclosure. Neither Laredo nor Warburg Pincus is representing as to the accuracy or completeness of such information andthe disclosure nor do we or Warburg Pincus undertake noany obligation to correct or update this information.it.
“Bausch & Lomb, an eye health company, makes sales of human healthcare productsAs to benefit patientsSAMIH:
Laredo understands that SAMIH's affiliates intend to disclose in Iran under licenses issuedtheir next annual or quarterly SEC report that:
"Santander UK plc ("Santander UK") holds frozen savings accounts and one current account for two customers resident in the U.K. who are currently designated by the U.S. Departmentfor terrorism. The accounts held by each customer were blocked after the customer's designation and remained blocked and dormant throughout 2015. Revenue generated by Santander UK on these accounts is negligible.
An Iranian national, resident in the U.K., who is currently designated by the U.S. under the Iranian Financial Sanctions Regulations and the Weapons of Mass Destruction Proliferators Sanctions Regulations ("NPWMD sanctions program"), holds a mortgage with Santander UK that was issued prior to any such designation. No further drawdown has been made (or would be permitted) under this mortgage although Santander UK continues to receive repayment installments. In 2015, total revenue in connection with the Treasury'smortgage was approximately £3,876 and net profits were negligible relative to the overall profits of Santander UK. The same Iranian national also holds two investment accounts with Santander Asset Management UK Limited. The funds within both accounts are invested in the same portfolio fund. The accounts have remained frozen during 2015. The investment returns are being automatically reinvested, and no disbursements have been made to the customer. Total revenue for the Santander Group in connection with the investment accounts was £188 and net profits in 2015 were negligible relative to the overall profits of Banco Santander, S.A.
During the third quarter 2015, two additional Santander UK customers were designated. First, a U.K. national designated by the U.S. under the Specially Designated Global Terrrorist ("SDGT") sanctions program who is on the U.S. Specially Designated National ("SDN") list. This customer holds a bank account which generated revenue of approximately £180 during the third and fourth quarters of 2015. The account is blocked. Net profits in the third and fourth quarters of 2015 were negligible relative to the overall profits of Santander. Second, a U.K. national also designated by the U.S. under the SDGT sanctions program who is on the U.S. SDN list, held a bank account. No transactions were made in the third and fourth quarter of 2015 and the account is blocked and in arrears.
In addition, during the fourth quarter of 2015, Santander UK has identified one additional customer. A U.K. national designated by the U.S. under the SDGT sanctions program who is on the U.S. SDN list, held a bank account which generated negligible revenue during the fourth quarter of 2015. The account was closed during the fourth quarter of 2015. Net profits in the fourth quarter of 2015 were negligible relative to the overall profits of Banco Santander, S.A."
As to Endurance:
Laredo understands that Endurance's affiliates intend to disclose in their next annual or quarterly SEC report that:
"On December 2, 2015, Endurance terminated a subscriber account ("the Subscriber Account") that Endurance believes to be associated with Issam Shammout and Sky Blue Bird Aviation ("Shammout") identified by the Office of Foreign Assets Control (“OFAC”("OFAC"). In 2012, Bausch & Lomb, as a Specially Designated National, or ("SDN"), on May 21, 215, pursuant to 31 C.F.R. Part 594. The Subscriber Account was granted licensesinadvertently migrated to Endurance's servers following its acquisition of the assets of Arvixe LLC ("Arvixe") on October 31, 2014. Pursuant to the terms of the asset purchase agreement between Endurance and Arvixe, any customer accounts prohibited by OFAC extending to its foreign affiliates doing business in Iran. Beforewere expressly excluded from the U.S. Government extended OFAC sanctions to entities controlledacquisition. Accordingly, Endurance does not believe it took legal ownership of the Subscriber Account, and no revenue was collected by U.S. persons in October 2012, it was permissible under U.S. law for non-U.S. affiliates to engage in sales to Iranian customers under limited circumstances. In accordance with these requirements, during the first three quarters of 2012, certain of Bausch & Lomb's non U.S. affiliates engaged in sales to Iran from its Surgical - Consumables business, which includes certain intraocular lenses and other products used to help people retain or regain sight. Its non-U.S. affiliate, Technolas Perfect Vision GmbH (“TPV”), which sells ophthalmic surgery systems and related products usedEndurance in connection with refractivethe Subscriber Account since the date on which Shammout was added to the SDN list. Nonetheless, upon identifying that the Subscriber Account had been migrated to its servers, Endurance promptly suspended all services and cataract surgery, also engaged in salesterminated the Subscriber Account. Endurance reported the Subscriber Account to Iran. These sales were all conducted throughOFAC as potentially the property of a distributor, which also engaged in certain registration and licensing activities with the Iranian government involving Bausch & Lomb's products. The Iranian distributor is not listed on any U.S. sanctions lists and is not a government-owned entity. However, the downstream customers of this distributor included public hospitals, which may be owned or controlled directly or indirectly by the Iranian government. The entire gross revenues attributableSDN subject to Bausch & Lomb's Surgical - Consumables business not conductedblocking pursuant to anExecutive Order 13223. As of January 25, 2016, Endurance has not received any correspondence from OFAC license in Iran during 2012 were US $5,058,000 and the gross profits were US$2,690,000. The entire gross revenues attributable to TPV's sales to Iran during 2012 not under OFAC license were €1,738,900 and the gross profits were €958,624. Bausch & Lomb does not have sufficient information to specify what proportion of these sales may relate to Iranian government end customers of its distributor. The purpose of Bausch & Lomb's Iran-related activities is to provide access to important and sight-saving products to surgeons and patients in Iran, and to improve the eye healthcare of the Iranian people. Forregarding this reason, Bausch & Lomb and its affiliates plan to continue their existing activities and operations in Iran; however, as noted above, all of this business (including business conducted by non-U.S. companies) is conducted pursuant to licenses issued by OFAC.”matter."

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Employees
As of December 31, 2012,2015, we had 266340 full-time employees. We also employed a total of 1622 contract personnel who assist our full-time employees with respect to specific tasks and perform various field and other services. Our future success will depend partially on our ability to identify, attract, retain and motivate qualified personnel. We are not a party to any collective bargaining agreements and have not experienced any strikes or work stoppages. We consider our relations with our employees to be satisfactory.
Our offices
Our executive offices are located at 15 W. Sixth Street, Suite 1800,900, Tulsa, Oklahoma 74119, and the phone number at

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this address is (918) 513-4570. We also own or lease fieldcorporate offices in Midland, andTexas. On January 20, 2015, we announced the closing of our Dallas, Texas.Texas area office. We are currently still subject to the lease covering this office space, but are actively exploring alternative arrangements for its use.
Available information
We are required to file annual, quarterly and current reports, proxy statements and other information with the SEC. You may read and copy any documents filed by us with the SEC at the SEC's Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. Our filings with the SEC are also available to the public from commercial document retrieval services and at the SEC's website at http://www.sec.gov.
Our common stock is listed and traded on the New York Stock Exchange under the symbol "LPI." Our reports, proxy statements and other information filed with the SEC can also be inspected and copied at the New York Stock Exchange, 20 Broad Street, New York, New York 10005.
We also make available on our website (http://www.laredopetro.com) all of the documents that we file with the SEC, free of charge, as soon as reasonably practicable after we electronically file such material with the SEC. Our Code of Conduct and Business Ethics, Code of Ethics For Senior Financial Officers, Corporate Governance Guidelines and the charters of our audit committee, compensation committee and nominating and corporate governance committee are also available on our website and in print free of charge to any stockholder who requests them. Requests should be sent by mail to our corporate secretary at our executive office at 15 W. Sixth Street, Suite 1800,900, Tulsa, Oklahoma 74119. Information contained on our website is not incorporated by reference into this Annual Report on Form 10-K.Report. We intend to disclose on our website any amendments or waivers to our Code of Ethics that are required to be disclosed pursuant to Item 5.05 of Form 8-K.

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Item 1A.    Risk Factors
 Our business involves a high degree of risk. If any of the following risks, or any risks described elsewhere in this Annual Report, on Form 10-K, were actually to occur, our business, financial condition or results of operations could be materially adversely affected and the trading price of our shares could decline resulting in the loss of part or all of your investment. The risks described below are not the only ones facing us. Additional risks not presently known to us or which we currently consider immaterial may also adversely affect us.
Risks related to our business
Oil, NGL and natural gas prices are volatile. A substantial orThe continuing and extended decline in oil, NGL and natural gas prices has adversely affected, and may continue to adversely affect, our business, financial condition orand results of operations and may in the future affect our ability to meet our capital expenditure obligations and financial commitments.commitments as well as negatively impact our stock price further.
The prices we receive for our oil, NGL and natural gas production heavily influence our revenue, profitability, access to capital and future rate of growth. Oil, NGL and natural gas are commodities, and therefore, their prices are subject to wide fluctuations in response to relatively minor changes in supply and demand. Historically, the market for oil, NGL and natural gas has been volatile.volatile, and this volatility exhibited a negative trend in the second half of 2014 which has continued through 2015 and into the first quarter of 2016. This market will likely continue to be volatile in the future. The prices we receive for our production, and the levels of our production, depend on numerous factors beyond our control. These factors include the following:
worldwide and regional economic and financial conditions impacting the global supply and demand for oil, NGL and natural gas;
the level of global oil, NGL and natural gas exploration and production;
the level of global oil, NGL and natural gas supplies, in particular due to supply growth from the United States;
foreign and domestic supply capabilities for oil, NGL and natural gas;
the price and quantity of U.S. imports and exports of foreign oil, and natural gas, including liquefied natural gas;gas, and NGL;
political conditions in or affecting other oil, NGL and natural gas-producing countries, including the current conflicts in the Middle East, and conditions in South America, Africa, Ukraine and Russia;
actions of the levelOrganization of globalPetroleum Exporting Countries and state-controlled oil companies relating to oil, NGL and natural gas explorationproduction and production;price controls;
the extent to which U.S. shale producers become "swing producers" adding or subtracting to the world supply totals of oil, NGL and natural gas;
future regulations prohibiting or restricting our ability to apply hydraulic fracturing to our wells;
the level of global oilcurrent and natural gas inventories;future regulations regarding well spacing;
prevailing prices on local oil, NGL and natural gas price indexes in the areas in which we operate;
localized and global supply and demand fundamentals and transportation availability;
weather conditions;
technological advances affecting energy consumption;
the price and availability of alternative fuels; and
domestic, local and foreign governmental regulation and taxes.
Lower oil, NGL and natural gas prices have and will continue to reduce our cash flows and borrowing ability. We may be unable to obtain needed capital or financing on satisfactory terms, which could lead to a decline in our oil, NGL and natural gas reserves as existing reserves are depleted. Substantial decreasesA continuing decrease in oil, NGL and natural gas prices wouldcould render uneconomic a significantan even larger portion of our exploration, development and exploitation projects. This may resulthas already resulted in ourus having to make significant downward adjustments to our estimated proved reserves. As a result, a substantial orreserves, and we may need to make further downward adjustments in the future. Furthermore, under our Senior Secured Credit Facility, scheduled borrowing base redeterminations occur on each May 1and November 1, and the lenders have the right to call for an interim redetermination of the borrowing base one time between any two redetermination dates and in other specified circumstances. We expect that the extended decline in oil, NGL and natural gas prices maywill adversely impact our borrowing base in future borrowing base redeterminations, which could trigger repayment obligations under the Senior Secured Credit Facility to the extent our outstanding loans under the Senior Secured Credit Facility exceed the redetermined borrowing base and otherwise materially and adversely affect our future business, financial condition, results of operations, liquidity or ability to finance planned capital expenditures.
Our business requires significant capital expenditures and we may be unable to obtain needed capital or financing on satisfactory terms or at all.
Our exploration, development and acquisition activities require substantial capital expenditures. Historically, we have funded our capital expenditures through a combination of cash flows from operations, capital contributions, borrowings on our senior secured credit facility and proceeds from our senior unsecured notes. We do not have commitments from anyone to contribute capital to us. Future cash flows are subject to a number of variables, including the level of production from existing wells, prices of In addition, lower oil, NGL and natural gas and our success in developing and producing new reserves. If our cash flow from operations is not sufficient to fund our capital expenditure budget, weprices may have limited ability to obtain the additional capital necessary to sustain our operations at current levels. We may not be able to obtain debt or equity financing on terms favorable to us or at all. The failure to obtain additional financing could result incause a curtailment of our operations relating to exploration and development of our prospects, which in turn could lead to afurther decline in our oil and natural gas production or reserves and, in some areas, a loss of properties.stock price.

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Drilling forCurrently, we receive incremental cash flows as a result of our hedging activity. To the extent we are unable to obtain future hedges at attractive prices or our derivative activities are not effective, our cash flows and producingfinancial condition may be adversely impacted.
To achieve more predictable cash flows and reduce our exposure to adverse fluctuations in the prices of oil, NGL and natural gas, we enter into derivative instrument contracts for a portion of our oil, NGL and natural gas production, including swaps, collars, puts and basis swaps. In accordance with applicable accounting principles, we are highrequired to record our derivatives at fair market value, and they are included on our consolidated balance sheet as assets or liabilities and in our consolidated statements of operations as gain (loss) on derivatives. Gain (loss) on derivatives are included in our cash flows from operating activities. Accordingly, our earnings may fluctuate significantly as a result of changes in the fair market value of our derivative instruments. Although our current hedges provide us with a benefit as they are priced above the current depressed prices for oil, NGL and natural gas, as these hedges expire, there is significant uncertainty that we will be able to put new hedges in place that will provide us with similar benefit.
Derivative instruments also expose us to the risk of financial loss in some circumstances, including when:
production is less than the volume covered by the derivative instruments;
the counter-party to the derivative instrument defaults on its contractual obligations;
there is an increase in the differential between the underlying price in the derivative instrument and actual prices received; or
there are issues with regard to legal enforceability of such instruments.
For additional information regarding our hedging activities, with many uncertainties that could adversely affect our business, financial condition or resultsplease see "Item 7. Management's discussion and analysis of operations.
Our future financial condition and results of operations will depend on the successoperations—Results of our exploitation, exploration, development and production activities. Our oil and natural gas exploration, exploitation, development and production activities are subject to numerous risks beyond our control, including the risk that drilling will not result in commercially viable oil and natural gas production. Our decisions to purchase, explore, develop or otherwise exploit locations or properties will depend in part on the evaluation of information obtained through geophysical and geological analyses, production data and engineering studies, the results of which are often inconclusive or subject to varying interpretations. For a discussion of the uncertainty involved in these processes, see "—operations—Commodity derivatives."
Estimating reserves and future net revenues involves uncertainties. Decreases in oil, NGL and natural gas prices, increases in service costs or negative revisions to reserve estimates or assumptions as to future oil, NGL and natural gas prices, may lead to decreased earnings and losses or impairment of oil, and natural gas assets." In addition, our cost of drilling, completing and operating wells is often uncertain before drilling commences. Further, many factors may curtail, delay or cancel our scheduled drilling projects, including the following:
delays imposed by or resulting from compliance with regulatory and contractual requirements and related lawsuits, which may include limitations on hydraulic fracturing or the discharge of greenhouse gases;
pressure or irregularities in geological formations;
shortages of or delays in obtaining equipment and qualified personnel;
equipment failures or accidents;
fires and blowouts;
adverse weather conditions, such as hurricanes, blizzards and ice storms;
declines in oil and natural gas prices;
limited availability of financing at acceptable rates;
title problems; and
limitations in the market for oil and natural gas.
Federal and state legislation and regulatory initiatives relating to hydraulic fracturing could prohibit projects or result in materially increased costs and additional operating restrictions or delays because of the significance of hydraulic fracturing in our business.
Hydraulic fracturing is a practice that is used to stimulate production of hydrocarbons, particularly natural gas, from tight formations. The process involves the injection of water, sand and chemicals under pressure into the formation to fracture the surrounding rock and stimulate production. Nearly all of our proved non-producing and proved undeveloped reserves associated with future drilling, recompletion and refracture stimulation projects, or approximately 59% of our total estimated proved reserves as of December 31, 2012, will require hydraulic fracturing. If we are unable to apply hydraulic fracturing to our wells or the process is prohibited or significantly regulated or restricted, we would lose the ability to (i) drill and complete the projects for such proved reserves and (ii) maintain the associated acreage, which would have a material adverse effect on our future business, financial condition, operating results and prospects.
The process is typically regulated by state oil and gas commissions. The U.S. Environmental Protection Agency (the "EPA"), however, recently asserted federal regulatory authority over hydraulic fracturing under the federal Safe Drinking Water Act's ("SDWA") Underground Injection Control ("UIC") Program. Under this assertion of authority, the EPA requires facilities to obtain permits to use diesel fuel in hydraulic fracturing operations. The U.S. Energy Policy Act of 2005, which exempts hydraulic fracturing from regulation under the SDWA, prohibits the use of diesel fuel in the fracturing process without a UIC permit. On May 4, 2012, the EPA published a draft UIC Program guidance for oil and natural gas hydraulic fracturing activities using diesel fuel. The guidance document is designed for use by employees of the EPA that draft the UIC permits and describes how regulations of Class II wells, which are those wells injecting fluids associated with oil and natural gas production activities, may be tailored to address the purported unique risks of diesel fuel injection during the hydraulic fracturing process. Although the EPA is not the permitting authority for UIC Class II programs in Texas and Oklahoma, where we maintain acreage, the EPA is encouraging state programs to review and consider use of the above-mentioned draft guidance. The draft guidance underwent an extended public comment process, which concluded on August 23, 2012. The EPA is presently evaluating the public comments and will likely issue a final guidance document at a later date. On November 3, 2011, the EPA released its Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources. The study will include both analysis of existing data and investigative activities designed to generate future data. The EPA issued a progress report in December 2012, and expects to release a final report for public comment and peer review in 2014.

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In August 2012, the EPA adopted rules that subject oil and natural gas production, processing, transmission, and storage operations to regulation under the New Source Performance Standards ("NSPS") and National Emission Standards for Hazardous Air Pollutants ("NESHAP") programs. The rule includes NSPS standards for completions of hydraulically fractured gas wells and establishes specific new requirements for emissions from compressors, controllers, dehydrators, storage vessels, natural gas processing plants and certain other equipment. The final rule became effective October 15, 2012; however, a number of the requirements did not take immediate effect. The rule established a phase-in period to allow for the manufacture and distribution of required emissions reduction technology. During the first phase, ending December 31, 2014, owners and operators of gas wells must either flare their emissions or use emissions reduction technology called "green completions" technologies already deployed at wells. On or after January 1, 2015, all newly fractured gas wells will be required to use green completions. Controls for certain storage vessels and pneumatic controllers may phase-in over one year beginning August 16, 2012, while certain compressors, dehydrators and other equipment must comply with the final rule immediately or up to three years and 60 days after the August 16, 2012 publication of the final rule, depending on the construction date and/or nature of the unit. We continue to evaluate the EPA's final rule, as it may require changes to our operations, including the installation of new emissions control equipment. Furthermore, on May 4, 2012, the DOI issued a draft rule that seeks to require companies operating on federal and Indian lands to (i) publicly disclose the chemicals used in the hydraulic fracturing process; (ii) confirm its wells meet certain construction standards and (iii) establish site plans to manage flowback water. Under current federal law, there is no requirement for operators to disclose the use of such chemicals, although Laredo has already commenced similar disclosure with state regulators. In addition, legislation is pending in Congress to repeal the hydraulic fracturing exemption from the SDWA, provide for federal regulation of hydraulic fracturing, and require public disclosure of the chemicals used in the fracturing process. Finally, on October 20, 2011, the EPA announced its plan to propose federal pre-treatment standards for wastewater generated during the hydraulic fracturing process. Hydraulic fracturing stimulation requires the use of a significant volume of water with some resulting "flowback," as well as "produced water." The EPA asserts that this water may contain radioactive materials and other pollutants and, therefore, may deteriorate drinking water quality if not properly treated before discharge. The Clean Water Act prohibits the discharge of wastewater into federal or state waters. Thus, "flowback" and "produced water" must either be injected into permitted disposal wells or transported to public or private treatment facilities for treatment, or recycled. The EPA asserts that due to some contaminants in hydraulic fracturing wastewater, most treatment facilities are unable to properly treat the wastewater before introducing it into public waters. If adopted, the new pre-treatment rules will require shale gas operations to pre-treat wastewater before transferring it to treatment facilities. Proposed rules are expected in 2013 for coalbed methane and 2014 for shale gas.
Some states have adopted, and other states are considering adopting, regulations that could restrict hydraulic fracturing in certain circumstances or otherwise require the public disclosure of chemicals used in the hydraulic fracturing process. For example, pursuant to legislation adopted by the State of Texas in June 2011, the chemical components used in the hydraulic fracturing process, as well as the volume of water used, must be disclosed to the Railroad Commission of Texas and the public beginning February 1, 2012. In addition to state law, local land use restrictions, such as city ordinances, may restrict or prohibit the performance of well drilling in general and/or hydraulic fracturing in particular.
If these or any other new laws or regulations that significantly restrict hydraulic fracturing are adopted, such laws could make it more difficult or costly for us to drill and produce from conventional or tight formations as well as make it easier for third parties opposing the hydraulic fracturing process to initiate legal proceedings. In addition, if hydraulic fracturing is regulated at the federal level, fracturing activities could become subject to additional permitting and financial assurance requirements, more stringent construction specifications, increased monitoring, reporting and recordkeeping obligations, plugging and abandonment requirements and also to attendant permitting delays and potential increases in costs. These developments, as well as new laws or regulations, could cause us to incur substantial compliance costs, and compliance or the consequences of failure to comply by us could have a material adverse effect on our financial condition and results of operations. At this time, it is not possible to estimate the potential impact on our business that may arise if federal or state legislation governing hydraulic fracturing is enacted into law.
Estimating reserves and future net revenues involves uncertainties. Decreases in oil and natural gas prices, or negative revisions to reserve estimates or assumptions as to future oil and natural gas prices, may lead to decreased earnings, losses or impairment of oilNGL and natural gas assets.
The reserve data included in this Annual Report on Form 10-K represent estimates. ReserveReserves estimation is a subjective process of evaluating underground accumulations of oil, NGL and natural gas that cannot be measured in an exact manner. Reserves that are "proved reserves" are those estimated quantities of oil, NGL and natural gas that geological and engineering data demonstrate with reasonable certainty are recoverable in future years from known reservoirs under existing economic and operating conditions and that relate to projectsspecific locations for which the extraction of hydrocarbons must have commenced or the operator must be reasonably certain will commence within a reasonable time.five-year period.    

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The estimation process relies on interpretations of available geological, geophysical, engineering and production data. There are numerous uncertainties inherent in estimating quantities of proved reserves and in projecting future rates of production and timing of developmental expenditures, including higher decline curves in the first year of production and many other factors beyond the control of the producer. In addition, the estimates of future net revenues from our proved reserves and the present value of such estimates are based upon certain assumptions about future production levels, prices and costs that may not prove to be correct. Further, initial production rates reported by us or other operators may not be indicative of future or long-term production rates. A production decline may be rapid and irregular when compared to a well's initial production.
Quantities of proved reserves are estimated based on economic conditions in existence during the period of assessment. Changes to oil, NGL and natural gas prices in the markets for such commodities may have the impact of shortening the economic lives of certain fields because it becomes uneconomic to produce all recoverable reserves on such fields, which reduces proved property reservereserves estimates. OurIn 2015, negative revisions of 55,837124,180 MBOE in 2012of previously estimated quantities are primarily attributable to the removal of 106,883 MBOE due to the combined effect of the removal of 378 proved undeveloped locations and the net effect of reinterpreting 34 undeveloped locations. The 378 locations that were primarily the resultremoved were comprised of 182 vertical Wolfberry wells due to lower commodity prices and increased well costs that caused196 horizontal wells to better align the locationstiming of their development with our future drilling plans. The remaining 17,297 MBOE of negative revisions are due to become uneconomic.a combination of pricing, performance and other changes to the proved developed producing and proved developed non-producing wells.
Negative revisions in the estimated quantities of proved reserves have the effect of increasing the rates of depreciation, depletion and amortization on the affected properties, which decrease earnings or result in losses through higher depreciation, depletion and amortization expense. These revisions, as well as revisions in the assumptions of future cash flows of these reserves, may also trigger impairment losses on certain properties, which would result in a non-cash charge to earnings. See Note O.420.d to our consolidated financial statements included elsewhere in this Annual Report.

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Also, the substantial decrease in oil, NGL and natural gas prices has had the effect of rendering uneconomic a portion of our exploration, development and exploitation projects. This resulted in our auditedhaving to make downward adjustments to our estimated proved reserves. It is possible that we may need to make additional downward adjustments in the future (which could be significant).
As a result of the sustained decrease in prices for oil, NGL and natural gas, we have taken and may be required to take further write-downs of the carrying values of our properties.
Accounting rules require that we periodically review the carrying value of our properties for possible impairment. Based on prevailing commodity prices and specific market factors and circumstances at the time of prospective impairment reviews, and the continuing evaluation of development plans, production data, economics and other factors, we have been required to, and may be required to further, write-down the carrying value of our properties. A write-down constitutes a non-cash charge to earnings.
Oil, NGL and natural gas prices have significantly declined since mid-2014 and have remained low in the first-quarter of 2016. Primarily as a result of these lower prices, our December 31, 2015 estimated proved reserves decreased 171 MMBOE from our December 31, 2014 reserves, converted to three streams. Additionally, we recorded non-cash full cost ceiling impairments of $488.0 million, $906.4 million and $975.0 million in the second, third and fourth quarters of 2015, respectively. If prices remain at or below current levels and all other factors remain the same, we will incur further charges in the future. Such charges could have a material adverse effect on our results of operations for the periods in which they are taken. See Note 2.g to our consolidated financial statements included elsewhere in this Annual Report for additional information.
Any significant reduction in our borrowing base under our Senior Secured Credit Facility as a result of a periodic borrowing base redetermination or otherwise will negatively impact our liquidity and, consequently, our ability to fund our operations, and we may not have sufficient funds to repay borrowings under our Senior Secured Credit Facility or any other obligation if required as a result of a borrowing base redetermination.
Availability under our Senior Secured Credit Facility is currently subject to a borrowing base of $1.15 billion. The borrowing base is subject to scheduled semiannual (May 1 and November 1) and other elective borrowing base redeterminations based upon, among other things, projected revenues from, and asset values of, the oil and natural gas properties securing the Senior Secured Credit Facility. The lenders under our Senior Secured Credit Facility can unilaterally adjust the borrowing base and the borrowings permitted to be outstanding under our Senior Secured Credit Facility. Reductions in estimates of our oil, NGL and natural gas reserves will result in a reduction in our borrowing base (if prices are kept constant). Given the ongoing decline in commodity prices for oil, NGL and natural gas, it is likely that reductions in our borrowing base could also arise from other factors, including but not limited to:
lower commodity prices or production;
increased leverage ratios;
inability to drill or unfavorable drilling results;
changes in crude oil, NGL and natural gas reserve engineering;
increased operating and/or capital costs;
the lenders' inability to agree to an adequate borrowing base; or
adverse changes in the lenders' practices (including required regulatory changes) regarding estimation of reserves.
As of February 16, 2016, we had $170.0 million of borrowings outstanding under our Senior Secured Credit Facility. We may make further borrowings under our Senior Secured Credit Facility in the future. Any significant reduction in our borrowing base as a result of such borrowing base redeterminations or otherwise will negatively impact our liquidity and our ability to fund our operations and, as a result, would have a material adverse effect on Form 10-K.our financial position, results of operation and cash flow. Further, if the outstanding borrowings under our Senior Secured Credit Facility were to exceed the borrowing base as a result of any such redetermination, we could be required to repay the excess. We may not have sufficient funds to make such repayments. If we do not have sufficient funds and we are otherwise unable to negotiate renewals of our borrowings or arrange new financing, we may have to sell significant assets. Any such sale could have a material adverse effect on our business and financial results.
Our business requires significant capital expenditures and we may be unable to obtain needed capital or financing on satisfactory terms or at all.
Our exploration, development, marketing, transportation and acquisition activities require substantial capital expenditures. Historically, we have funded our capital expenditures through a combination of cash flows from operations,

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borrowings on our Senior Secured Credit Facility, equity offerings and proceeds from the sale of our Senior Unsecured Notes. We do not have commitments from anyone to contribute capital to us. Future cash flows are subject to a number of variables, including the level of production from existing wells, prices of oil, NGL and natural gas and our success in developing and producing new reserves. If our cash flow from operations is not sufficient to fund our capital expenditure budget, we may have limited ability to obtain the additional capital necessary to sustain our operations at current levels. We may not be able to obtain debt or equity financing on terms favorable to us or at all. The failure to obtain additional capital could result in a curtailment of our operations relating to exploration and development of our prospects, which in turn could lead to a decline in our oil, NGL and natural gas production or reserves and, in some areas, a loss of properties.
Increases in interest rates could adversely affect our business.
Our business and operating results can be harmed by factors such as the availability, terms of and cost of capital, increases in interest rates or a reduction in credit rating. These changes could cause our cost of doing business to increase, limit our ability to pursue acquisition opportunities, reduce our cash flow and/or liquidity available for drilling and place us at a competitive disadvantage. For example, as of February 16, 2016 we had $1.0 billion of elected commitment on our Senior Secured Credit Facility, subject to compliance with financial covenants. The impact of a 1.0% increase in interest rates on an assumed borrowing of the full $1.0 billion elected commitment on our Senior Secured Credit Facility would result in increased annual interest expense of $10.0 million and a decrease in our net income before income taxes. Recent and continuing disruptions and volatility in the global financial markets may lead to a contraction in credit availability impacting our ability to finance our operations. We require continued access to capital. A significant reduction in our cash flows from operations or the availability of credit could materially and adversely affect our ability to achieve our planned growth and operating results.
We have incurred losses from operations for various periods since our inception and may do so in the future.
We incurred net losses from our inception to December 31, 2006 of $1.8 million and for each of the years ended December 31, 2007, 2008, 2009 and 2015 of $6.1 million, $192.0 million, $184.5 million and $2.2 billion, respectively. Our development of and participation in an increasingly larger number of locations has required and will continue to require substantial capital expenditures. The uncertainty and factors described throughout this section may impede our ability to economically find, develop, exploit and acquire oil, NGL and natural gas reserves. As a result, we may not be able to achieve or sustain profitability or positive cash flows from operating activities in the future. See "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations—Critical accounting policies and estimates."
We require a significant amount of cash to service our indebtedness. Our ability to generate cash depends on many factors beyond our control.
Our ability to make payments on and to refinance our indebtedness and to fund planned capital expenditures depends on our ability to generate cash in the future. This, to a certain extent, is subject to general economic, financial, competitive, legislative, regulatory and other factors that are beyond our control. We cannot assure you that we will generate sufficient cash flow from operations or that future funding will be available to us under our Senior Secured Credit Facility, equity offerings or other actions in an amount sufficient to enable us to pay our indebtedness or to fund our other liquidity needs. We may need to refinance all or a portion of our indebtedness at or before maturity. We cannot assure you that we will be able to refinance any of our indebtedness on commercially reasonable terms or at all.
Our debt agreements contain restrictions that limit our flexibility in operating our business.
Our Senior Secured Credit Facility and the indentures governing our Senior Unsecured Notes each contain, and any future indebtedness we incur may contain, various covenants that limit our ability to engage in specified types of transactions. These covenants limit our ability to, among other things:
incur additional indebtedness;
pay dividends on, repurchase or make distributions in respect of our capital stock or make other restricted payments;
make certain investments;
sell certain assets;
create liens;
consolidate, merge, sell or otherwise dispose of all or substantially all of our assets; and
enter into certain transactions with our affiliates.
As a result of these covenants, we are limited in the manner in which we may conduct our business and we may be

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unable to engage in favorable business activities or finance future operations or our capital needs. In addition, the covenants in our Senior Secured Credit Facility require us to maintain a minimum working capital ratio and minimum interest coverage ratio and also limit our capital expenditures. A breach of any of these covenants could result in a default under one or more of these agreements, including as a result of cross default provisions and, in the case of our Senior Secured Credit Facility, permit the lenders to cease making loans to us. Upon the occurrence of an event of default under our Senior Secured Credit Facility, the lenders could elect to declare all amounts outstanding under our Senior Secured Credit Facility to be immediately due and payable and terminate all commitments to extend further credit. Such actions by those lenders could cause cross defaults under our other indebtedness, including the Senior Unsecured Notes. If we were unable to repay those amounts, the lenders under our Senior Secured Credit Facility could proceed against the collateral granted to them to secure that indebtedness. We pledged a significant portion of our assets as collateral under our Senior Secured Credit Facility. If the lenders under our Senior Secured Credit Facility accelerate the repayment of the borrowings thereunder, the proceeds from the sale or foreclosure upon such assets will first be used to repay debt under our Senior Secured Credit Facility, and we may not have sufficient assets to repay our unsecured indebtedness thereafter.
If we were to experience an ownership change, we could be limited in our ability to use net operating losses arising prior to the ownership change to offset future taxable income. In addition, our ability to use net operating loss carry forwards to reduce future tax payments may be limited if our taxable income does not reach sufficient levels.
As of December 31, 2015, we had a net operating loss ("NOL") carryforward for federal income tax purposes of $1.4 billion. If we were to experience an "ownership change," as determined under Section 382 of the Internal Revenue Code of 1986, as amended (the "Code"), our ability to offset taxable income arising after the ownership change with NOLs arising prior to the ownership change would be limited, possibly substantially. An ownership change would establish an annual limitation on the amount of our pre-change NOL we could utilize to offset our taxable income in any future taxable year to an amount generally equal to the value of our stock immediately prior to the ownership change multiplied by the long-term tax-exempt rate. In general, an ownership change will occur if there is a cumulative increase in our ownership of more than 50 percentage points by one or more "5% shareholders" (as defined in the Code) at any time during a rolling three-year period. In addition, under the Code, NOL can generally be carried forward to offset future taxable income for a period of 20 years. Our ability to use our NOL during this period will be dependent on our ability to generate taxable income, and the NOL could expire before we generate sufficient taxable income. As of December 31, 2015, based on evidence available to us, including projected future cash flows from our oil and natural gas reserves and the timing of those cash flows, we believe a portion of our NOL is not fully realizable. As a result, as of December 31, 2015 a valuation allowance has been recorded against our NOL tax assets.
The potential drilling locations for our future wells that we have tentatively internally identified are scheduled outwill be drilled, if at all, over many years, makingyears. This makes them susceptible to uncertainties that could materially alter the occurrence or timing of their drilling, which in certain instances could prevent production prior to the expiration date of leases for such locations. In addition, we may not be able to raise the substantial amount of capital that would be necessary to drill a substantial portion of our identified potential drilling locations.
Although our management team has scheduledestablished certain potential drilling locations as an estimationa part of our long-range planning related to future multi-year drilling activities on our existing acreage, our ability to drill and develop these locations depends on a number of uncertainties, including oil, NGL and natural gas prices, the availability and cost of capital, drilling and production costs, the availability of drilling services and equipment, drilling results (including the impact of increased horizontal drilling and longer laterals), lease expirations, gathering systems, marketing and pipeline transportation constraints, regulatory approvals and other factors. Because of these uncertain factors, we do not know if the numerous potential drilling locations we have currently identified will ever be drilled or if we will be able to produce oil, NGL or natural gas from these or any other potential drilling locations. In addition, unless production is established within the spacing units covering the undeveloped acres on which some of the potential locations are obtained, the leases for such acreage will expire. As such, it is likely our actual drilling activities, mayespecially in the long term, could materially differ from those presently anticipated.
Drilling for and producing oil, NGL and natural gas are high-risk activities with many uncertainties that could adversely affect our business, financial condition or results of operations.
Our future financial condition and results of operations will depend on the success of our exploration, exploitation, development and production activities. Our oil, NGL and natural gas exploration, exploitation, development and production activities are subject to numerous risks beyond our control, including the risk that drilling will not result in commercially viable oil, NGL and natural gas production. Our decisions to purchase, explore, develop or otherwise exploit locations or properties will depend in part on the evaluation of information obtained through geophysical and geological analyses, production data, engineering studies and our Earth Model, the results of which are often inconclusive or subject to varying interpretations. For a discussion of the uncertainty involved in these processes, see "—Estimating reserves and future net revenues involves uncertainties. Decreases in oil, NGL and natural gas prices, or negative revisions to reserves estimates or assumptions as to future oil, NGL and natural gas prices, may lead to decreased earnings, losses or impairment of oil, NGL and natural gas

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assets." In addition, our cost of drilling, completing and operating wells is often uncertain before drilling commences. Further, many factors may curtail, delay or cancel our scheduled drilling projects, including the following:
declines in oil, NGL and natural gas prices;
limited availability of financing or capital at acceptable rates or terms;
limitations in the market for oil, NGL and natural gas;
delays imposed by or resulting from compliance with regulatory and contractual requirements and related lawsuits, which may include limitations on hydraulic fracturing or the discharge of greenhouse gases;
pressure or irregularities in geological formations;
shortages of or delays in obtaining equipment and qualified personnel;
equipment failures or accidents;
fires and blowouts;
adverse weather conditions, such as hurricanes, blizzards and ice storms; and
title problems.
We are involved as a passive minority-interest partner in joint ventures and are subject to risks associated with joint venture partnerships.
We are involved as a passive minority-interest partner in joint venture relationships and may initiate future joint venture projects. Entering into a joint venture as a passive minority-interest partner involves certain risks that include: the need to contribute funds to the joint venture to support its operating and capital needs; the inability to exercise voting control over the joint venture; economic or business interests that are not aligned with our venture partners, including the holding period and timing of ultimate sale of the ventures' underlying assets; and the inability for the venture partner to fulfill its commitments and obligations due to financial or other difficulties. Our interest in Medallion is as a passive minority-interest partner.
In many instances (including Medallion), we depend on the venture partner for elements of the arrangements that are important to the success of the joint venture, such as agreed payments of substantial development costs pertaining to the joint venture and its share of other costs of the joint venture. The performance of these venture partner obligations or the ability of the venture partner to meet its obligations under these arrangements is outside our control. If commodity prices decrease,the venture partner does not meet or satisfy its obligations under these arrangements, the performance and success of these arrangements, and their value to us, may be adversely affected.
If our current or future venture partners are unable to meet their obligations because of insolvency, bankruptcy or other reasons, we may be requiredforced to take write-downsundertake the obligations ourselves and/or incur additional expenses in order to have some other party perform such obligations. In addition, the insolvency of the carrying values ofa venture partner could result in our properties.
Accounting rules require that we periodically review the carrying value of our propertiesliability to governmental authorities for possible impairment. Based on prevailing commodity prices and specific market factors and circumstances at the time of prospective impairment reviews, and the continuing evaluation of development plans, production data, economicscompliance with environmental, safety and other factors,regulatory requirements, to the joint venture’s suppliers and vendors and to other third parties. In such cases, we may also be required to write downenforce our rights, which may cause disputes among our venture partners and us. If any of these events occur, they may adversely impact us, our financial performance and results of operations, the carrying valuejoint ventures and/or our ability to enter into future joint ventures. Likewise, we may have similar obligations to third parties for properties we operate.
Some of our properties. A write-down constitutes a non-cash chargedrilling and development activities are subject to earnings. We may incur impairment charges in the future,joint ventures or operations controlled by third parties, which could negatively impact our control over these operations and have a material adverse effect on our business, results of operations, for the periodsfinancial condition and prospects.
A portion of our drilling and development activities is conducted through joint operating agreements under which we own partial interests in which such charges are taken. See Note B.7 to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional information.
Unless we replace our oil and natural gas reserves, our reserves and production will decline,properties. If we do not operate the properties in which would adversely affect our future cash flows and resultswe own an interest, (i) we have limited ability to influence or control the day-to-day operation of operations.
Producing oil and natural gas reservoirs generally are characterized by declining production rates that vary depending upon reservoir characteristicssuch properties, including compliance with environmental, safety and other factors. Unlessregulations, (ii) we conduct successful ongoing exploration,cannot control the amount of capital expenditures that we are required to fund with respect to properties or the future development plans for the properties, (iii) we are dependent on third parties to fund their required share of capital expenditures the same as our dependency on third parties where we are the operator and exploitation activities(iv) we may have restrictions or continually acquire properties containing proved reserves,limitations on our proved reserves will decline as those reserves are produced. Our future oil and natural gas reserves andability to sell our interests in these jointly owned assets. The failure of an operator of our wells to adequately perform operations or an operator's breach of the applicable agreements could materially reduce our production and revenues. The success and timing of our drilling and development activities on properties operated by others, therefore, depends upon a number of factors outside of our future cash flowcontrol, including the operator's timing and resultsamount of operations, are highly dependent on our successcapital expenditures, expertise and financial resources, inclusion of other participants in efficiently developingdrilling wells and exploiting our current reserves and economically finding or acquiring additional recoverable reserves. Weuse of technology. Because we do not have a majority interest in most wells that we do not operate, we may not be ablein a position to develop, exploit, find or acquire sufficient additional reserves to replace our current and future production. If we are unable to replace our current and future production,remove the valueoperator in the event of our reserves will decrease, and our business, financial condition and results of operations would be adversely affected.poor performance.

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Currently, we receive incremental cash flows as a resultIn addition, the insolvency of an operator of any of our hedging activity. Toproperties, the extent we are unable to obtain future hedges at effective prices consistent with those we have received to date and oil and natural gas prices do not improve, our cash flows and financial condition may be adversely impacted.
To achieve more predictable cash flows and reduce our exposure to downward price fluctuations, asfailure of December 31, 2012, we have entered into hedge contracts for approximately 4.4 million Bblsan operator of any of our crude oil production and 56.3 million MMBtuproperties to adequately perform operations or an operator’s breach of our natural gas production for settlement between January 2013 and December 2015. We are currently realizing a benefit from these hedge positions. If future oil and natural gas prices remain comparable to current prices, we expect that this benefit will decline materially over the life of the hedges, which cover decreasing volumes at declining prices through 2015. If we are unable to enter into new hedge contracts in the future at favorable pricing and for a sufficient amount of our production, our financial condition and results of operations could be materially adversely affected. For additional information regarding our hedging activities, please see "Item 7. Management's discussion and analysis of financial condition and results of operations—Commodity derivative financial instruments."
Our derivative activities could result in financial losses orapplicable agreements could reduce our earnings.
To achieve more predictable cash flowsproduction and reducerevenue and result in our exposureliability to adverse fluctuations ingovernmental authorities for compliance with environmental, safety and other regulatory requirements, to the prices ofoperator's suppliers and vendors and to royalty owners under oil and natural gas we enter into derivative instrument contracts for a portionleases jointly owned with the operator or another insolvent owner. Finally, an operator of our oil and natural gas production, including collars, puts and basis swaps. In accordance with applicable accounting principles, we are requiredproperties may have the right, if another non-operator fails to record our derivative financial instruments at fair market value, and they are included on our consolidated balance sheet as assetspay its share of costs because of its insolvency or liabilities and in our consolidated statement of operation as realized or unrealized gains. Losses on derivatives are included in our cash flows from operating activities. Accordingly, our earnings may fluctuate significantly as a result of changes in the fair market value of our derivative instruments. Derivative instruments also exposeotherwise, to require us to pay our proportionate share of the riskdefaulting party's share of financial loss in some circumstances, including when:
production is less than the volume covered by the derivative instruments;
the counter-party to the derivative instrument defaults on its contractual obligations;
there is an increase in the differential between the underlying price in the derivative instrument and actual prices received; or
there are issues with regard to legal enforceability of such instruments.
In addition, derivative arrangements could limit the benefit we would receive from increases in the prices for oil and natural gas, which could also have a material adverse effect on our financial condition.costs.
The inability of our significant customers to meet their obligations to us may materially adversely affect our financial results.
In addition to credit risk related to receivables from commodity derivative contracts, our principal exposure to credit risk is through net joint operations receivables (approximately $30.9($21.4 million atas of December 31, 2012)2015) and the sale of our oil, NGL and natural gas production (approximately $48.4($25.6 million in receivables atas of December 31, 2012)2015), which we market to energy marketing companies, refineries and affiliates. Joint interest receivables arise from billing entities who own partial interestinterests in the wells we operate. These entities participate in our wells primarily based on their ownership in leases on which we wish to drill. We are generally unable to control which co-owners participate in our wells. We are also subject to credit risk due to the concentration of our oil, NGL and natural gas production receivables with several significant customers. The largest purchaser of our oil, NGL and natural gas production accounted for approximately 34%37.5% of our total oil, NGL and natural gas revenues for the year ended December 31, 2012. We do not require2015 and our customerssales of purchased oil are made to post collateral.one customer. See Note 11 to our consolidated financial statements included elsewhere in this Annual Report for additional information. The inability or failure of our significant customers or joint working interest owners to meet their obligations to us or their insolvency or liquidation may materially adversely affect our financial results.
We Current economic circumstances may incur substantial losses and be subject to substantial liability claims as a result of our operations. Additionally, we may not be insured for, or our insurance may be inadequate to protect us against,further increase these risks.
We are not insured against all risks. Losses and liabilities arising from uninsured and underinsured events could materially and adversely affect our business, financial condition or results of operations. Our oil and natural gas exploration and production activities are subject to all of the operating risks associated with drilling for and producing oil and natural gas, including the possibility of:
environmental hazards, such as uncontrollable flows of oil, natural gas, brine, well fluids, toxic gas or other pollution into the environment, including groundwater and shoreline contamination;
abnormally pressured formations;
mechanical difficulties, such as stuck oilfield drilling and service tools and casing collapse;
fires, explosions and ruptures of pipelines;

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personal injuries and death;
natural disasters; and
terrorist attacks targeting oil and natural gas related facilities and infrastructure.
Any of these risks could adversely affect our ability to conduct operations or result in substantial losses to us as a result of:
injury or loss of life;
damage to and destruction of property, natural resources and equipment;
pollution and other environmental damage and associated clean-up responsibilities;
regulatory investigations, penalties or other sanctions;
suspension of our operations; and
repair and remediation costs.
We may elect not to obtain insurance if we believe that the cost of available insurance is excessive relative to the risks presented. In addition, pollution and environmental risks generally are not fully insurable. The occurrence of an event that is not fully covered by insurance could have a material adverse effect on our business, financial condition and results of operations.
Locations that we decide to drill may not yield oil or natural gas in commercially viable quantities.
Locations that we decide to drill that do not yield oil or natural gas in commercially viable quantities will adversely affect our results of operations and financial condition. In this Annual Report on Form 10-K, we describe some of our current drilling locations and our plans to explore those drilling locations. Our drilling locations are in various stages of evaluation, ranging from those that are ready to drill to those that will require substantial additional seismic data processing and interpretation before a decision can be made to proceed with the drilling of such locations. There is no way to predict in advance of drilling and testing whether any particular drilling location will yield oil or natural gas in sufficient quantities to recover drilling or completion costs or to be economically viable. The use of seismic data and other technologies and the study of producing fields in the same area will not enable us to know conclusively prior to drilling whether oil or natural gas will be present or, if present, whether oil or natural gas will be present in commercial quantities. We cannot assure you that the analogies we draw from available data from other wells, more fully explored locations or producing fields will result in successfully locating oil or natural gas in commercial quantities on our prospective acreage.
Our use of 2D and 3D seismic data is subject to interpretation and may not accurately identify the presence of oil and natural gas, which could adversely affect the results of our drilling operations.
Even when properly used and interpreted, 2D and 3D seismic data and visualization techniques are only tools used to assist geoscientists in identifying subsurface structures and hydrocarbon indicators and do not enable geoscientists to know whether hydrocarbons are, in fact, present in those structures or the amount of hydrocarbons. We employ 3D seismic technology with respect to certain of our projects. The implementation and practical use of 3D seismic technology is relatively new, unproven and unconventional, which can lessen its effectiveness, at least in the near term, and increase our costs. In addition, the use of 3D seismic and other advanced technologies requires greater pre-drilling expenditures than traditional drilling strategies, and we could incur greater drilling and exploration expenses as a result of such expenditures, which may result in a reduction in our returns. As a result, our drilling activities may not be successful or economical, and our overall drilling success rate or our drilling success rate for activities in a particular area could decline.
We often gather 3D seismic data over large areas. Our interpretation of seismic data delineates those portions of an area that we believe are desirable for drilling. Therefore, we may choose not to acquire option or lease rights prior to acquiring seismic data, and in many cases, we may identify hydrocarbon indicators before seeking option or lease rights in the location. If we are not able to lease those locations on acceptable terms, we will have made substantial expenditures to acquire and analyze 3D data without having an opportunity to attempt to benefit from those expenditures.
Market conditions, the unavailability of satisfactory oil and natural gas gathering, processing or transportation arrangements or operational impediments may adversely affect our access to oil, natural gas and natural gas liquids markets or delay our production.
The availability of a ready market for our oil and natural gas production depends on a number of factors, including the demand for and supply of oil and natural gas and the proximity of reserves to pipelines, trucking and terminal facilities. Our ability to market our production depends in substantial part on the availability and capacity of gathering systems, pipelines, trucking and processing facilities owned and operated by third parties. Our failure to obtain such services on acceptable terms

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could materially harm our business. We may be required to shut in wells due to lack of a market or inadequacy or unavailability of oil and natural gas pipeline, trucking, gathering system or processing capacity. In addition, if oil or natural gas quality specifications for the third party oil or natural gas pipelines with which we connect change so as to restrict our ability to transport oil or natural gas, our access to oil and natural gas markets could be impeded. If our production becomes shut in for any of these or other reasons, we would be unable to realize revenue from those wells until other arrangements were made to deliver the products to market.
Our operations are substantially dependent on the availability, use and disposal of water. Restrictions on our abilityNew legislation and regulatory initiatives or restrictions relating to obtain water maydisposal wells could have ana material adverse effect on our future business, financial condition, operating results of operations and cash flows.prospects.
Water is an essential component of both the drilling and hydraulic fracturing processes. Historically, we have been able to purchase water from local land owners and other sources for use in our operations. During 2012, Westthe past several years, Texas and Oklahomahas experienced the lowest inflows of water in recent history. As a result of this severe drought,these conditions, some local water districts may begin restricting the use of water subject to their jurisdiction for drilling and hydraulic fracturing in order to protect the local water supply. If we are unable to obtain water to use in our operations from local sources, we may be unable to economically produce oil, NGL and natural gas, which could have an adverse effect on our financial condition, results of operations, cash flows and cash flows.financial condition.
Additionally, our drilling procedures produce large volumes of water that we must properly dispose. The Clean Water Act of 1977, as amended, the Safe Drinking Water Act of 1974, as amended, the Oil Pollution Act of 1990, as amended, and comparable state laws impose restrictions and strict controls regarding the discharge of pollutants, including produced waters and other natural gas wastes, into federal and state waters. The discharge of pollutants into regulated waters is prohibited, except in accordance with the terms of a permit issued by the U.S. Environmental Protection Agency (the "EPA") or the state. Furthermore, the State of Texas maintains groundwater protection programs that require permits for discharges or operations that may impact groundwater conditions. The underground injection of fluids is subject to permitting and other requirements under state laws and regulation. Obtaining permits has the potential to delay the development of oil, NGL and natural gas projects. These same regulatory programs also limit the total volume of water that can be discharged, hence limiting the rate of development, and require us to incur compliance costs. In October 2014, the RRC adopted new regulations effective as of November 17, 2014 that require additional supporting documentation, including records from the U.S. Geological Survey regarding previous seismic events in the area, as part of applications for new disposal wells. The new regulations also clarify the RRC's ability to modify, suspend or terminate a disposal well permit if scientific data indicates it is likely to contribute to seismic activity. The RRC has used this authority to deny permits for waste disposal sites.
Moreover, the EPA is examining regulatory requirements for "indirect dischargers" of wastewater - i.e., those that send their discharges to private or publicly owned treatment facilities, which treat the wastewater before discharging it to regulated waters. On April 7, 2015, the EPA published a proposed rule establishing federal pre-treatment standards for wastewater discharged from onshore unconventional oil and gas extraction facilities to publicly owned treatment works ("POTWs"). The EPA asserts that wastewater from such facilities can be generated in large quantities and can contain constituents that may disrupt POTW operations and/or be discharged, untreated, from the POTW to receiving waters. If adopted, the new pre-treatment rule would require unconventional oil and gas facilities to pre-treat wastewater before transferring it to POTWs. The public comment period ended on July 17, 2015, and the EPA is expected to publish a final rule by August 2016. The EPA is also

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conducting a study of private wastewater treatment facilities (also known as centralized waste treatment, or CWT, facilities) accepting oil and gas extraction wastewater. The EPA is collecting data and information related to the extent to which CWT facilities accept such wastewater, available treatment technologies (and their associated costs), discharge characteristics, financial characteristics of CWT facilities, and the environmental impacts of discharges from CWT facilities.
Because of the necessity to safely dispose of water produced during drilling and production activities, these regulations, or others like them, could have a material adverse effect on our future business, financial condition, operating results and prospects. See "Item 1. Business—Regulation of the oil and natural gas industry" for a further description of the laws and regulations that affect us.
Federal and state legislation and regulatory initiatives relating to hydraulic fracturing and water disposal wells could prohibit projects or result in materially increased costs and additional operating restrictions or delays because of the significance of hydraulic fracturing and water disposal wells in our business.
Hydraulic fracturing is a practice that is used to stimulate production of oil and/or natural gas from tight formations. The process involves the injection of water, propants and chemicals under pressure into the formation to fracture the surrounding rock and stimulate production. Nearly all of our proved non-producing and proved undeveloped reserves associated with future drilling, recompletion and refracture stimulation projects require hydraulic fracturing. If we are unable to apply hydraulic fracturing to our wells or the process is prohibited or significantly regulated or restricted, we would lose the ability to (i) drill and complete the projects for such proved reserves and (ii) maintain the associated acreage, which would have a material adverse effect on our future business, financial condition, operating results and prospects.
The federal Safe Drinking Water Act ("SDWA") regulates the underground injection of substances through the Underground Injection Control ("UIC") Program. However, hydraulic fracturing is generally exempt from regulation under the UIC Program, and thus the process is typically regulated by state oil and gas commissions. Nevertheless, the EPA has asserted federal regulatory authority over hydraulic fracturing involving diesel additives under the UIC Program. Under this assertion of authority, the EPA requires facilities to obtain permits to use diesel fuel in hydraulic fracturing operations. The U.S. Energy Policy Act of 2005, which exempts hydraulic fracturing from regulation under the SDWA, prohibits the use of diesel fuel in the fracturing process without a UIC permit. On February 12, 2014, the EPA published a revised UIC Program guidance for oil, NGL and natural gas hydraulic fracturing activities using diesel fuel. The guidance document describes how regulations of Class II wells, which are those wells injecting fluids associated with oil, NGL and natural gas production activities, may be tailored to address the purported unique risks of diesel fuel injection during the hydraulic fracturing process. Although the EPA is not the permitting authority for UIC Class II programs in Texas, where we maintain acreage, the EPA is encouraging state programs to review and consider use of the above-mentioned guidance. Furthermore, legislation has been proposed in recent sessions of Congress to repeal the hydraulic fracturing exemption from the SDWA, provide for federal regulation of hydraulic fracturing, and require public disclosure of the chemicals used in the fracturing process.
On May 9, 2014, the EPA issued an Advanced Notice of Proposed Rulemaking seeking public comment on its intent to develop and issue regulations under the Toxic Substances Control Act regarding the disclosure of information related to the chemicals used in hydraulic fracturing. The public comment period ended on September 18, 2014. The EPA plans to develop a Notice of Proposed Rulemaking by December 2016, which would describe a proposed mechanism, regulatory, voluntary, or a combination of both, to collect data on hydraulic fracturing chemical substances and mixtures.
Also, on March 26, 2015, the Bureau of Land Management (the "BLM") published a final rule governing hydraulic fracturing on federal and Indian lands. The rule requires public disclosure of chemicals used in hydraulic fracturing, implementation of a casing and cementing program, management of recovered fluids, and submission to the BLM of detailed information about the proposed operation, including wellbore geology, the location of faults and fractures, and the depths of all usable water. The rule took effect on June 24, 2015, although it is the subject of several pending lawsuits filed by industry groups and at least four states, alleging that federal law does not give the BLM authority to regulate hydraulic fracturing. On September 30, 2015, the United States District Court for Wyoming issued a preliminary injunction preventing the BLM from implementing the rule nationwide. This order has been appealed to the Tenth Circuit Court of Appeals.
Furthermore, there are certain governmental reviews either underway or being proposed that focus on environmental aspects of hydraulic fracturing practices. For example, the EPA has commenced a study of the potential adverse effects that hydraulic fracturing may have on water quality and public health. In June 2015, the EPA released its draft assessment report for peer review and public comment, finding that, while there are certain mechanisms by which hydraulic fracturing activities could potentially impact drinking water resources, there is no evidence available showing that those mechanisms have led to widespread, systemic impacts. Also, on February 6, 2015, the EPA released a report with findings and recommendations related to public concern about induced seismic activity from disposal wells. The report recommends strategies for managing and

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minimizing the potential for significant injection-induced seismic events. Other governmental agencies, including the U.S. Department of Energy, the U.S. Geological Survey, and the U.S. Government Accountability Office, have evaluated or are evaluating various other aspects of hydraulic fracturing. These ongoing or proposed studies, depending on their degree of pursuit and any meaningful results obtained, could spur initiatives to further regulate hydraulic fracturing under the SDWA or other regulatory mechanism.
On August 16, 2012, the EPA published final rules that subject oil, NGL and natural gas production, processing, transmission, and storage operations to regulation under the New Source Performance Standards ("NSPS") and National Emission Standards for Hazardous Air Pollutants ("NESHAP") programs. The rule includes NSPS Standards for completions of hydraulically fractured gas wells and establishes specific new requirements for emissions from compressors, controllers, dehydrators, storage vessels, natural gas processing plants and certain other equipment. The final rule seeks to achieve a 95% reduction in volatile organic compounds ("VOC") emitted by requiring the use of reduced emission completions or "green completions" on all hydraulically-fractured wells constructed or refractured after January 1, 2015. The EPA received numerous requests for reconsideration of these rules from both industry and the environmental community, and court challenges to the rules were also filed. In response, the EPA has issued, and will likely continue to issue, revised rules responsive to some of these requests for reconsideration. For example, in September 2013 and December 2014, the EPA amended its rules to extend compliance deadlines and to clarify the NSPS. Further, on July 31, 2015, the EPA finalized two updates to the NSPS to address the definition of low-pressure wells and references to tanks that are connected to one another (referred to as connected in parallel). In addition, on September 18, 2015, the EPA published a suite of proposed rules to reduce methane and VOC emissions from oil and gas industry, including new "downstream" requirements covering equipment in the natural gas transmission segment of the industry that was not regulated by the 2012 rules. The public comment period closed on December 4, 2015.
Also, on January 22, 2016, the BLM announced a proposed rule to reduce the flaring, venting and leaking of methane from oil and gas operations on federal and Indian lands. The proposed rule would require operators to use currently available technologies and equipment to reduce flaring, periodically inspect their operations for leaks, and replace outdated equipment that vents large quantities of gas into the air. The rule would also clarify when operators owe the government royalties for flared gas.
These standards, as well as any future laws and their implementing regulations, may require us to obtain pre-approval for the expansion or modification of existing facilities or the construction of new facilities expected to produce air emissions, impose stringent air permit requirements, or utilize specific equipment or technologies to control emissions. Our failure to comply with these requirements could subject us to monetary penalties, injunctions, conditions or restrictions on operations and, potentially, criminal enforcement actions.
Some states have adopted, and other states are considering adopting, regulations that could restrict hydraulic fracturing in certain circumstances or otherwise require the public disclosure of chemicals used in the hydraulic fracturing process. For example, pursuant to legislation adopted by the State of Texas in June 2011, the chemical components used in the hydraulic fracturing process, as well as the volume of water used, must be disclosed to the RRC and the public beginning February 1, 2012. Furthermore, on May 23, 2013, the RRC issued the "well integrity rule," which updates the RRC's Rule 13 requirements for drilling, putting pipe down and cementing wells. The rule also includes new testing and reporting requirements, such as (i) the requirement to submit to the RRC cementing reports after well completion or after cessation of drilling, whichever is later, and (ii) the imposition of additional testing on wells less than 1,000 feet below usable groundwater. The "well integrity rule" took effect in January 2014. Additionally, on October 28, 2014, the RRC adopted disposal well rule amendments designed, among other things, to require applicants for new disposal wells that will receive non-hazardous produced water and hydraulic fracturing flowback fluid to conduct seismic activity searches utilizing the U.S. Geological Survey. The searches are intended to determine the potential for earthquakes within a circular area of 100 square miles around a proposed, new disposal well. The disposal well rule amendments, which became effective on November 17, 2014, also clarify the RRC's authority to modify, suspend or terminate a disposal well permit if scientific data indicates a disposal well is likely to contribute to seismic activity. The RRC has used this authority to deny permits for waste disposal wells. In addition to state law, local land use restrictions, such as city ordinances, may restrict or prohibit the performance of well drilling in general and/or hydraulic fracturing in particular.
If these or any other new laws or regulations that significantly restrict hydraulic fracturing are adopted or laws or regulations are adopted to restrict water disposal wells, such laws could make it more difficult or costly for us to drill and produce from conventional or tight formations as well as make it easier for third parties opposing the oil, NGL and natural gas industry to initiate legal proceedings. In addition, if these matters are regulated at the federal level, fracturing and disposal activities could become subject to additional permitting and financial assurance requirements, more stringent construction specifications, increased monitoring, reporting and recordkeeping obligations, plugging and abandonment requirements and

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also to attendant permitting delays and potential increases in costs. These developments, as well as new laws or regulations, could cause us to incur substantial compliance costs, and compliance or the consequences of failure to comply by us could have a material adverse effect on our financial condition and results of operations. At this time, it is not possible to estimate the potential impact on our business that may arise if federal or state legislation governing hydraulic fracturing or water disposal wells are enacted into law.
We are subject to complex federal, state, local and other laws and regulations that could adversely affect the cost, manner or feasibility of conducting our operations or expose us to significant liabilities.
Our oil, NGL and natural gas exploration, production and gathering operations are subject to complex and stringent laws and regulations. In order to conduct our operations in compliance with these laws and regulations, we must obtain and maintain numerous permits, approvals and certificates from various federal, state and local governmental authorities. We may incur substantial costs in order to maintain compliance with these existing laws and regulations. In addition, our costs of compliance may increase if existing laws and regulations are revised or reinterpreted, or if new laws and regulations become applicable to our operations. Such costs could have a material adverse effect on our business, financial condition and results of operations. Failure to comply with laws and regulations applicable to our operations, including any evolving interpretation and enforcement by governmental authorities, could have a material adverse effect on our business, financial condition and results of operations.
See "Item 1. Business—Regulation of the oil and natural gas industry" and other risk factors described in this "Item 1A. Risk Factors" for a further description of the laws and regulations that affect us.
Our operations may be exposed to significant delays, costs and liabilities as a result of environmental, health and safety requirements applicable to our business activities.
We may incur significant delays, costs and liabilities as a result of federal, state and local environmental, health and safety requirements applicable to our exploration, development and production activities. These laws and regulations may require us to obtain a variety of permits or other authorizations governing our air emissions, water discharges, waste disposal or other environmental impacts associated with drilling, production and transporting product pipelines or other operations; regulate the sourcing and disposal of water used in the drilling, fracturing and completion processes; limit or prohibitRestrictions on drilling activities inintended to protect certain areas and on certain lands lying within wilderness, wetlands, frontier and other protected areas; require remedial action to prevent or mitigate pollution from former operations such as plugging abandoned wells or closing earthen pits; and/or impose substantial liabilities for spills, pollution or failure to comply with regulatory filings. In addition, these laws and regulationsspecies of wildlife may restrict the rate of oil or natural gas production. These laws and regulations are complex, change frequently and have tended to become increasingly stringent over time. Failure to comply with these laws and regulations may result in the assessment of administrative, civil and criminal penalties, imposition of cleanup and site restoration costs and liens, the suspension or revocation of necessary permits, licenses and authorizations, the requirement that additional pollution controls be installed and, in some instances, issuance of orders or injunctions limiting or requiring discontinuation of certain operations.
Under certain environmental laws that impose strict as well as joint and several liability, we may be required to remediate contaminated properties currently or formerly operated by us or facilities of third parties that received waste generated by our operations regardless of whether such contamination resulted from the conduct of others or from consequences of our own actions that were in compliance with all applicable laws at the time those actions were taken. In addition, claims for damages to persons or property, including natural resources, may result from the environmental, health and safety impacts of our operations. In addition, accidental spills or releases from our operations could expose us to significant liabilities under environmental laws. Moreover, public interest in the protection of the environment has increased dramatically in recent years. The trend of more expansive and stringent environmental legislation and regulations applied to the crude oil and natural gas industry could continue, resulting in increased costs of doing business and consequently affecting profitability. To the extent laws are enacted or other governmental action is taken that restricts drilling or imposes more stringent and costly

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operating, waste handling, disposal and cleanup requirements, our business, prospects, financial condition or results of operations could be materially adversely affected.
See "Item 1. Business—Regulation of environmental and occupational health and safety matters" for a further description of the laws and regulations that affect us.
The unavailability or high cost of additional drilling rigs, equipment, supplies, personnel and oilfield services as well as fees for the cancellation of such services could adversely affect our ability to execute our exploration and development plans within our budget and on a timely basis.conduct drilling activities in some of the areas where we operate.
The demand for and availability of qualified and experienced personnel to drill wells and conduct field operations, geologists, geophysicists, engineers and other professionals in the oilOil, NGL and natural gas industryoperations in our operating areas can fluctuate significantly, oftenbe adversely affected by seasonal or permanent restrictions on drilling activities designed to protect various wildlife. Seasonal restrictions may limit our ability to operate in correlation with oilprotected areas and natural gas prices, causingcan intensify competition for drilling rigs, oilfield equipment, services, supplies and qualified personnel, which may lead to periodic shortages. Historically, there have been shortages when drilling is allowed. These constraints and the resulting shortages or high costs could delay our operations and materially increase our operating and capital costs. Permanent restrictions imposed to protect endangered species could prohibit drilling in certain areas or require the implementation of drilling and workover rigs, pipe and other equipmentexpensive mitigation measures. The designation of previously unprotected species in areas where we operate as demand for rigs and equipment has increased along with the number of wells being drilled. In particular, the high level of drilling activity in the Permian Basin and Anadarko Granite Wash has resulted in equipment shortages in those areas. We committed to several short-term drilling contracts with various third parties in order to complete various drilling projects. An early termination clause in these contracts requires us to pay significant penalties to the third party should we cease drilling efforts. These penaltiesthreatened or endangered could significantly impact our financial statements upon contract termination. As a result of these commitments, approximately $1.6 million in stacked rig fees were incurred in 2009. We cannot predict whether these conditions will exist in the future and, if so, what their timing and duration will be. The shortages as well as rig related fees could result in delays or cause us to incur significant expendituresincreased costs arising from species protection measures or could result in limitations on our exploration and production activities that are not provided for in our capital budget, which could have a materialan adverse effectimpact on our business, financial condition or results of operations.ability to develop and produce our reserves.
A change in the jurisdictional characterization of some of our assets by federal, state or local regulatory agencies or a change in policy by those agencies may result in increased regulation of our assets, which may cause our revenues to decline and operating expenses to increase.
Section 1(b) of the Natural Gas Act of 1938 (the "NGA") exempts natural gas gathering facilities from regulation by the Federal Energy Regulatory Commission ("FERC"). We believe that the natural gas pipelines in our gathering systems meet the traditional tests FERC has used to establish whether a pipeline performs a gathering function and therefore is exempt from the FERC's jurisdiction under the NGA. However, the distinction between FERC-regulated transmission services and federally unregulated gathering services is a fact-based determination. The classification of facilities as unregulated gathering is the subject of ongoing litigation, so the classification and regulation of our gathering facilities are subject to change based on future determinations by FERC, the courts or Congress, which could cause our revenues to decline and operating expenses to increase and may materially adversely affect our business, financial condition or results of operations. In addition, FERC has adopted regulations that may subject certain of our otherwise non-FERC jurisdictional facilities to FERC annual reporting and daily scheduled flow and capacity posting requirements. Additional rules and legislation pertaining to those and other matters may be considered or adopted by FERC from time to time. Failure to comply with those regulations in the future could subject us to civil penalty liability, which could have a material adverse effect on our business, financial condition or results of operations.
The adoption of climate change legislation or regulations restricting emissions of "greenhouse gases" could result in increased operating costs and reduced demand for the oil, NGL and natural gas we produce.
Recent scientific studies have suggested that emissions of certain gases, commonly referred to as "greenhouse gases" ("GHGs"), including carbon dioxide and methane, may be contributing to warming of the earth's atmosphere and other climatic changes. In response to such studies, Congress has from time to time considered legislation to reduce emissions of GHGs. One bill approved by the House of Representatives in June 2009, known as the American Clean EnergyGHGs, and Security Act of 2009, would have required an 80% reduction in emissions of GHGs from sources within the U.S. between 2012 and 2050 but was not approved by the Senate in the 2009-2010 legislative session. Congress is likely to continue to consider similar bills. Moreover, almost halfone-half of the states have already taken legal measures to reduce emissions of GHGs, through the planned development of GHG emission inventories and/or regional GHG cap and trade programs or other mechanisms. Most cap and trade programs work by requiring major sources of emissions, such as electric power plants, or major producers of fuels, such as refineries and gas processing

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plants, to acquire and surrender emission allowances corresponding with their annual emissions of GHGs. The number of allowances available for purchase is reduced each year until the overall GHG emission reduction goal is achieved. As the number of GHG emission allowances declines each year, the cost or value of allowances is expected to escalate significantly. Some states have enacted renewable portfolio standards, which require utilities to purchase a certain percentage of their energy from renewable fuel sources.
In addition, in December 2009, the EPA determined that emissions of carbon dioxide, methane and other GHGs present an endangerment to human health and the environment, because emissions of such gases are, according to the EPA, contributing to warming of the earth's atmosphere and other climatic changes. These findings by the EPA allow the agency to

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proceed with the adoption and implementation of regulations that would restrict emissions of GHGs under existing provisions of the federal Clean Air Act. In response to its endangerment finding, the EPA recently adopted two sets of rules regarding possible future regulation of GHG emissions under the Clean Air Act. The motor vehicle rule, which became effective in January 2011,July 2010, purports to limit emissions of GHGs from motor vehicles manufactured in model years 2012-2016; however, it does not require immediate reductions in GHG emissions. A recent rulemaking proposal by the EPA and the Department of Transportation's National Highway Traffic Safety Administration seeks to expand the motor vehicle rule to include vehicles manufactured in model years 2017-2025.vehicles. The EPA adopted the stationary source rule (or the "tailoring rule") in May 2010, and it also became effective in January 2011, although it remains the subject of several pending lawsuits filed by industry groups.2011. The tailoring rule establishesestablished new GHG emissions thresholds that determine when stationary sources must obtain permits under the Prevention of Significant Deterioration or PSD,("PSD") and Title V programs of the Clean Air Act. On June 23, 2014, in Utility Air Regulatory Group v. EPA ("UARG v. EPA"), the Supreme Court held that stationary sources could not become subject to PSD or Title V permitting solely by reason of their GHG emissions. The permitting requirementsCourt ruled, however, that the EPA may require installation of the PSD program apply only to newly constructed or modified major sources. Obtaining a PSD permit requires a source to install best available control technology or BACT, for those regulated pollutants that are emittedGHG emissions at sources otherwise subject to the PSD and Title V programs. On December 19, 2014, the EPA issued two memoranda providing initial guidance on GHG permitting requirements in certain quantities. Phase Iresponse to the Court's decision in UARG v. EPA. In its preliminary guidance, the EPA indicated it would promulgate a rule to rescind any PSD permits issued under the portions of the tailoring rule which became effective on January 2, 2011, requires projects already triggering PSD permitting that are also increasing GHG emissionswere vacated by more than 75,000 tons per yearthe Court. In the interim, the EPA issued a narrowly crafted "no action assurance" indicating it will exercise its enforcement discretion not to comply with BACT rules for their GHG emissions. Phase IIpursue enforcement of the tailoringterms and conditions relating to GHGs in an EPA-issued PSD permit, and for related terms and conditions in a Title V permit. On April 30, 2015, the EPA issued a final rule which became effective on July 1, 2011, requires preconstructionallowing permitting authorities to rescind PSD permits using BACT for new projects that emit 100,000 tons of GHG emissions per year or existing facilities that make major modifications increasing GHG emissions by more than 75,000 tons per year. Phase III ofissued under the tailoring rule, which is expected to go into effect in 2013, will seek to streamline the permitting process and permanently exclude smaller sources from the permitting process. Finally, in Octoberinvalid regulations.
In September 2009, the EPA issued a final rule requiring the reporting of GHG emissions from specified large GHG emission sources in the U.S., including natural gas liquids fractionators and local natural gas/distribution companies, beginning in 2011 for emissions occurring in 2010. In November 2010, the EPA published a final rule expanding the GHG reporting rule to include onshore oil, NGL and natural gas production, processing, transmission, storage and distribution facilities. This rule requires reporting of GHG emissions from such facilities on an annual basis, with reporting beginning in 2012 for emissions occurring in 2011. On March 27, 2012,In October 2015, the EPA issuedamended the GHG reporting rule to add the reporting of GHG emissions from gathering and boosting systems, completions and workovers of oil wells using hydraulic fracturing, and blowdowns of natural gas transmission pipelines.
The EPA has continued to adopt GHG regulations applicable to other industries, such as its August 2015 adoption of three separate, but related, actions to address carbon dioxide pollution from power plants, including final Carbon Pollution Standards for new, modified and reconstructed power plants, a final Clean Power Plan to cut carbon dioxide pollution from existing power plants, and a proposed rule establishing carbon pollution standards for new fossil-fuel-fired electric utility generating units. The proposed rule underwent an extended public comment process, which concluded on June 25, 2012. The EPA is presently evaluating the public comments and is expected to issue a final rule at a later date. The EPA plansfederal plan to implement the Clean Power Plan emission guidelines. Upon publication of the Clean Power Plan on October 23, 2015, more than two dozen States as well as industry and labor groups challenged the Clean Power Plan in the D.C. Circuit Court of Appeals. On February 9, 2016, the U.S. Supreme Court stayed the Clean Power Plan pending disposition of the legal challenges. Nevertheless, as a result of the continued regulatory focus, future GHG regulations of the oil and gas industry remain a possibility.
In December 2015, the United States joined the international community at the 21st Conference of the Parties of the United Nations Framework Convention on Climate Change in Paris, France. The resulting Paris Agreement calls for the parties to undertake "ambitious efforts" to limit the average global temperature, and to conserve and enhance sinks and reservoirs of GHGs. The Paris Agreement, if ratified, establishes a framework for the parties to cooperate and report actions to reduce GHG emissions.
Restrictions on GHG emissions standards for refineries in November 2012.
that may be imposed could adversely affect the oil and natural gas industry. The adoption of legislation or regulatory programs to reduce GHG emissions could require us to incur increased operating costs, such as costs to purchase and operate emissions control systems, to acquire emissions allowances or comply with new regulatory requirements. Any GHG emissions legislation or regulatory programs applicable to power plants or refineries could also increase the cost of consuming, and thereby reduce demand for, the oil, NGL and natural gas we produce. Consequently, legislation and regulatory programs to reduce GHG emissions could have an adverse effect on our business, financial condition and results of operations.
In addition, claims have been made against certain energy companies alleging that GHG emissions from oil, NGL and

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natural gas operations constitute a public nuisance under federal and/or state common law. As a result, private individuals may seek to enforce environmental laws and regulations against us and could allege personal injury or property damages. While we are currently not a party to such litigation, we could be named in actions making similar allegations. An unfavorable ruling in any such case could significantly impact our operations and could have an adverse impact on our financial condition.
Moreover, there has been public discussion that climate change may be associated with extreme weather conditions such as more intense hurricanes, thunderstorms, tornadoes and snow or ice storms, as well as rising sea levels. Another possible consequence of climate change is increased volatility in seasonal temperatures. Some studies indicate that climate change could cause some areas to experience temperatures substantially colder than their historical averages. Extreme weather conditions can interfere with our production and increase our costs and damage resulting from extreme weather may not be fully insured. However, at this time, we are unable to determine the extent to which climate change may lead to increased storm or weather hazards affecting our operations.
Our oil, NGL and natural gas is sold to a limited number of geographic markets so an oversupply in any of those areas could have a material negative effect on the price we receive.
Our oil, NGL and natural gas is sold to a limited number of geographic markets which each have a fixed amount of storage and processing capacity. As a result, if such markets become oversupplied with oil, NGL and/or natural gas, it could have a material negative effect on the price we receive for our products and therefore an adverse effect on our financial condition. There is a risk that refining capacity in the U.S. Gulf Coast may be insufficient to refine all of the light sweet crude oil being produced in the United States. If light sweet crude oil production remains at current levels or continues to increase, demand for our light crude oil production could result in widening price discounts to the world crude prices and potential shut-in of production due to a lack of sufficient markets despite the lift on prior restrictions on the exporting of oil and natural gas.
Our operations may be exposed to significant delays, costs and liabilities as a result of environmental, health and safety requirements applicable to our business activities.
We may incur significant delays, costs and liabilities as a result of federal, state and local environmental, health and safety requirements applicable to our exploration, development, marketing, transportation and production activities. These laws and regulations may require us to obtain a variety of permits or other authorizations governing our air emissions, water discharges, waste disposal or other environmental impacts associated with drilling, production and transporting product pipelines or other operations; regulate the sourcing and disposal of water used in the drilling, fracturing and completion processes; limit or prohibit drilling activities in certain areas and on certain lands lying within wilderness, wetlands, frontier, seismically active areas, and other protected areas; require remedial action to prevent or mitigate pollution from former operations such as plugging abandoned wells or closing earthen pits; and/or impose substantial liabilities for spills, pollution or failure to comply with regulatory filings. In addition, these laws and regulations may restrict the rate of oil or natural gas production. These laws and regulations are complex, change frequently and have tended to become increasingly stringent over time. Failure to comply with these laws and regulations may result in the assessment of administrative, civil and criminal penalties, imposition of cleanup and site restoration costs and liens, the suspension or revocation of necessary permits, licenses and authorizations, the requirement that additional pollution controls be installed and, in some instances, issuance of orders or injunctions limiting or requiring discontinuation of certain operations.
Under certain environmental laws that impose strict as well as joint and several liability, we may be required to remediate contaminated properties currently or formerly operated by us or facilities of third parties that received waste generated by our operations regardless of whether such contamination resulted from the conduct of others or from consequences of our own actions that were in compliance with all applicable laws at the time those actions were taken. In addition, claims for damages to persons or property, including natural resources, may result from the environmental, health and safety impacts of our operations. In addition, accidental spills or releases from our operations could expose us to significant liabilities under environmental laws. Moreover, public interest in the protection of the environment has increased dramatically in recent years. The derivatives reformtrend of more expansive and stringent environmental legislation adopted by Congressand regulations applied to the crude oil, NGL and natural gas industry could continue, resulting in increased costs of doing business and consequently affecting profitability. To the extent laws are enacted or other governmental action is taken that restricts drilling or imposes more stringent and costly operating, waste handling, disposal and cleanup requirements, our business, prospects, financial condition or results of operations could be materially adversely affected.
See "Item 1. Business—Regulation of environmental and occupational health and safety matters" for a further description of the laws and regulations that affect us.

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If we are unable to drill new allocation wells it could have a material adverse impact on our future production results.
In the State of Texas, allocation wells allow an oil and gas producer to drill a horizontal well under two or more leaseholds that are not pooled. We are active in drilling and producing allocation wells. If there are regulatory changes with regard to allocation wells, the RRC denies or significantly delays the permitting of allocation wells or if legislation is enacted that negatively impacts the current process under which allocation wells are currently permitted, it could have an adverse impact on our ability to drill long horizontal lateral wells on some of our leases, which in turn could have a material adverse impact on our anticipated future production.
Unless we replace our oil, NGL and natural gas production, our reserves and production will continue to decline, which would adversely affect our future cash flows and results of operations.
Producing oil, NGL and natural gas reservoirs are generally characterized by declining production rates that vary depending upon reservoir characteristics and other factors. Unless we conduct successful ongoing exploration, development and exploitation activities or continually acquire properties containing proved reserves, our proved reserves will continue to decline as those reserves are produced. Our future oil, NGL and natural gas reserves and production, and therefore our future cash flow and results of operations, are highly dependent on our success in efficiently developing and exploiting our current reserves and economically finding or acquiring additional recoverable reserves. We may not be able to develop, exploit, find or acquire sufficient additional reserves to replace our current and future production. If we are unable to replace our current and future production, the value of our reserves will decrease, and our business, financial condition and results of operations would be adversely affected.
A decrease in our production of oil, NGL and natural gas could negatively impact our ability to meet our contractual obligations to deliver oil, NGL and natural gas and our ability to retain our leases.
A portion of our oil, NGL and gas production in any region may be interrupted, or shut in, from time to time for numerous reasons, including as a result of weather conditions, accidents, loss or unavailability of pipeline or gathering system access and capacity, field labor issues or strikes, or we might voluntarily curtail production in response to market conditions, including low oil, NGL and gas prices. If a substantial amount of our production is interrupted at the same time, it could temporarily adversely affect our cash flow. Furthermore, if we were required to shut in wells, we might also be obligated to pay shut-in royalties to certain mineral interest owners to maintain our leases.
In addition, we have entered into agreements with third party shippers, including Medallion, and purchasers that require us to deliver minimum amounts of crude oil and natural gas. Pursuant to these agreements, we must deliver specific amounts, either from our own production or from oil we acquire, over the next ten years. If we are unable to fulfill all of our contractual delivery obligations from our own production, we may be required to pay penalties or damages pursuant to these agreements or we may have to purchase oil from third parties to fulfill our delivery obligations. This could adversely impact our cash flows, profit margins and net income.
We may incur substantial losses and be subject to substantial liability claims as a result of our operations. Additionally, we may not be insured for, or our insurance may be inadequate to protect us against, these risks.
We are not insured against all risks. Losses and liabilities arising from uninsured and underinsured events could materially and adversely affect our business, financial condition or results of operations. Our oil, NGL and natural gas exploration and production activities are subject to all of the operating risks associated with drilling for and producing oil, NGL and natural gas, including the possibility of:
environmental hazards, such as uncontrollable flows of oil, natural gas, brine, well fluids, toxic gas or other pollution into the environment, including groundwater and shoreline contamination;
abnormally pressured formations;
mechanical difficulties, such as stuck oilfield drilling and service tools and casing collapse;
fires, explosions and ruptures of pipelines;
personal injuries and death;
natural disasters; and
terrorist attacks targeting oil, NGL and natural gas related facilities and infrastructure.

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Any of these risks could adversely affect our ability to conduct operations or result in substantial losses to us as a result of:
injury or loss of life;
damage to and destruction of property, natural resources and equipment;
pollution and other environmental damage and associated clean-up responsibilities;
regulatory investigations, penalties or other sanctions;
suspension of our operations; and
repair and remediation costs.
We may elect not to obtain insurance if we believe that the cost of available insurance is excessive relative to the risks presented. In addition, pollution and environmental risks generally are not fully insurable. The occurrence of an event that is not fully covered by insurance could have a material adverse effect on our business, financial condition and results of operations.
The marketability of our production is dependent upon transportation and other facilities, certain of which we do not control. If these facilities are unavailable, our operations could be interrupted and our revenues reduced.
The marketability of our oil, NGL and natural gas production depends on a variety of factors, including the availability, proximity, capacity and quality constraints of transportation and storage facilities owned by us or third parties. We do not control many of the trucks and other third-party transportation facilities necessary for the transportation of our products and our access to them may be limited or denied. Our failure to provide or obtain such services on acceptable terms could materially harm our business.
Insufficient production from our wells to support the construction of pipeline facilities by our purchasers or a significant disruption in the availability of our or third-party transportation facilities or other production facilities could adversely impact our ability to deliver to market or produce our oil, NGL and natural gas and thereby cause a significant interruption in our operations. The crude oil pipelines that transport our crude oil to market have quality specifications, including a Reid Vapor Pressure ("RVP") specification. While our tank batteries and equipment are designed to deliver crude oil that meets all pipeline specifications, including RVP, there is a risk that our crude oil production at any of our tank batteries could have an RVP that exceeds the pipeline specifications. The pipelines have the right under their tariffs to request that crude oil that does not meet their quality specifications, including RVP, be shut in until such crude is brought within quality specifications. If, in the future, we are unable, for any sustained period, to implement acceptable delivery or transportation arrangements or specifications or encounter production related difficulties, we may be required to shut in or curtail production. Any such shut-in or curtailment, or an inability to obtain favorable terms for delivery of the oil, NGL and natural gas produced from our fields, could materially and adversely affect our financial condition and results of operations.
Derivatives reform legislation and related regulations could have an adverse effect on our ability to hedge risks associated with our business.
The July 2010 Dodd-Frank Wall Street Reform and Consumer Protection Act ("Dodd-Frank"(the "Dodd-Frank Act"), which, among other provisions, requires more reporting requirements as well as establishes provides for federal oversight and regulation of the over-the-counter derivatives market and entities that participate in that market was signed into law on July 21, 2010. The new legislation requiredand mandates that the CommoditiesCommodity Futures Trading Commission ("CFTC"(the "CFTC"), the SEC, and federal regulators of financial institutions (the "Prudential Regulators") adopt rules or regulations implementing the Dodd-Frank Act and providing definitions of terms used in the Dodd-Frank Act. The Dodd-Frank Act establishes margin requirements and requires clearing and trade execution practices for certain market participants and may result in certain market participants needing to curtail or cease their derivatives activities.
Although some of the rules necessary to implement the Dodd-Frank Act remain to be adopted, the CFTC, the SEC and the SECPrudential Regulators have issued many rules to promulgate rules implementingimplement the new legislation within 360 days fromDodd-Frank Act, including a rule, which we refer to as the date"Mandatory Clearing Rule," requiring clearing of enactment. These rules have been adopted and those rules which have not been vacated and are not yet effective will take effect, depending on the rule, on April 10, 2013, May 1, 2013hedges, or July 1, 2013.
In its rulemaking under the new legislation, the CFTC has issued a final rule on position limits for certain futures and option contracts in the major energy markets and for swaps, that are their economic equivalents. Thissubject to it (currently, only certain interest rate and credit default swaps, which we do not presently have), a rule, was vacated and remandedwhich we refer to as the "End User Exception," establishing an "end user" exception to the CFTCMandatory Clearing Rule, a rule, which we refer to as the "Margin Rule," setting forth collateral requirements in connection with swaps that are not cleared and also an exception to the Margin Rule for further proceedingsend users that are not financial end users, which exception we refer to as the "Non-Financial End User Exception," and a rule, subsequently vacated by order of the United States District Court for the District of Columbia Judge Robert L. Wilkins, on September 28, 2012.and remanded to the CFTC for further proceedings, imposing position limits. The CFTC may issue another position limitproposed a new version of this rule, after conducting such further proceedingswhich we refer to as the "Re-Proposed Position Limit Rule," with respect to which the comment period has closed but a final rule has not been issued.

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We qualify for the End User Exception and such rule may or maywill utilize it if the Mandatory Clearing Rule is expanded to cover swaps in which we participate, we qualify for the Non-Financial End User Exception and will not be similarrequired to the vacated rule and contain an exemption from position limits for certain bona fide hedging transactions or positions. The CFTC has also issued final rules further defining "swap," "swap dealer" and "major swap participant" and specifying the reporting and other requirements for "non-financial entities" to elect the exception to the clearing requirementpost margin in connection with uncleared swaps under the Commodity Exchange Act ("CEA"). We qualify as a non-financial entityMargin Rule, and the quantities under the CEAswaps in which we participate are well within applicable limits under the Re-Proposed Position Limit Rule, so we do not expect to be directly affected by any of such rules. However, most if not all of our hedge counterparties will be subject to mandatory clearing in connection with their hedging activities with parties who do not qualify for the End User Exception and intendwill be required to complypost margin in connection with the reporting andtheir hedging activities with other requirements of the exception and utilize the exception. Although the rules will not impose clearing requirements on us, they will impose additional reporting and recordkeeping requirements on us and clearing, capital, margin and reporting and recordkeeping on swap dealers, and major swap participants, financial end users and will also require certain of our potential swap counterpartiesother persons that do not qualify for the Non-Financial End User Exception. In addition, the European Union and other non-U.S. jurisdictions have enacted laws and regulations, which we refer to conduct their swap activities through affiliatescollectively as "Foreign Regulations" which may be less creditworthy than existing potential swap counterparties.apply to our transactions with counterparties subject to such Foreign Regulations. The Dodd-Frank Act, the rules which have been adopted and if issued, a new position limitnot vacated, and, to the extent that the Re-Proposed Position Limit Rule is effected, such proposed rule could significantly increase the cost of our derivative contracts, (including through requirements to post collateral which could adversely affectmaterially alter the terms of our available liquidity),derivative contracts, reduce the availability of derivatives to us that we have historically used to protect against risks that we encounter in our business, reduce our ability to

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monetize or restructure our existing derivative contracts, and increase our potential exposure to less creditworthy counterparties. The Foreign Regulations could have similar effects. If we reduce our use of derivatives or commodity prices decline as a result of the legislationDodd-Frank Act and regulations and Foreign Regulations, our results of operations may become more volatile and our cash flows may be less predictable, which could adversely affect our ability to plan for and fund capital expendituresexpenditures. Finally, the Dodd-Frank Act was intended, in part, to reduce the volatility of oil and natural gas prices, which some legislators attributed to speculative trading in derivatives and commodity contracts related to oil and natural gas. Our revenues could therefore be adversely affected if a consequence of the Dodd-Frank Act and regulations is to lower commodity prices. Any of these consequences could have a material adverse effect on us, our financial condition, and our results of operations.
Our producing properties are in a concentrated geographic area, making us vulnerable to risks associated with operating in one major geographic area.
Our producing properties are geographically concentrated in the Permian Basin. At December 31, 2015, all of our total estimated proved reserves were attributable to properties located in this area. As a result of this concentration, we may be disproportionately exposed to the impact of regional supply and demand factors, delays or interruptions of production from wells in this area caused by governmental regulation, processing or transportation capacity constraints, market limitations, water shortages or other drought-related conditions or interruption of the processing or transportation of oil or natural gas.
Seasonal weather conditions and lease stipulations adversely affect our ability to conduct drilling activities in some of the areas where we operate.
Oil, NGL and natural gas operations in our operating areas can be adversely affected by seasonal weather conditions and lease stipulations designed to protect various wildlife. This limits our ability to operate in those areas and can later intensify competition during certain months for drilling rigs, oilfield equipment, services, supplies and qualified personnel, which may lead to periodic shortages. These constraints and the resulting shortages or high costs could delay our operations and materially increase our operating and capital costs. In addition, the Permian Basin has recently experienced severe winter weather and, as a consequence, our operating results during similar periods may ultimately be adversely affected.
Our use of 2D and 3D seismic and other data, including our Earth Model, is subject to interpretation and may not accurately identify the presence of oil, NGL and natural gas, which could adversely affect the results of our drilling operations.
Even when properly used and interpreted, 2D and 3D seismic data and other data, such as that incorporated into our Earth Model that provide either visualization techniques and/or statistical analyses are only tools used to assist geoscientists in identifying subsurface structures and hydrocarbon indicators and do not enable geoscientists to know whether hydrocarbons are, in fact, present in those structures or the amount of hydrocarbons. We employ 3D seismic technology with respect to certain of our projects. The implementation and practical use of 3D seismic technology is relatively unproven, which can lessen its effectiveness, at least in the near term, and increase our costs. In addition, the use of 3D seismic and other advanced technologies requires greater pre-drilling expenditures than traditional drilling strategies, and we could incur greater drilling and exploration expenses as a result of such expenditures, which may result in a reduction in our returns. As a result, our drilling activities may not be successful or economical, and our overall drilling success rate or our drilling success rate for activities in a particular area could decline.
The Earth Model is reliant upon data that is subject to interpretation and is itself the product of interpretation. Therefore, there is no guarantee that the data it produces or our interpretation of that data will be correct. The Earth Model is a new process and there is no guarantee that the initial rates of correlation will be duplicated.

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We often gather 3D seismic data over large areas. Our interpretation of seismic data delineates those portions of an area that we believe are desirable for drilling. Therefore, we may choose not to acquire option or lease rights prior to acquiring seismic data, and in many cases, we may identify hydrocarbon indicators before seeking option or lease rights in the location. If we are not able to lease those locations on acceptable terms, we will have made substantial expenditures to acquire and analyze 3D data without having an opportunity to attempt to benefit from those expenditures.
The unavailability or high cost of additional drilling rigs, equipment, supplies, personnel and oilfield services as well as fees for the cancellation of such services could adversely affect our ability to execute our exploration and development plans within our budget and on a timely basis.
The demand for and availability of qualified and experienced personnel to drill wells and conduct field operations, geologists, geophysicists, engineers and other professionals in the oil and natural gas industry can fluctuate significantly, often in correlation with oil, NGL and natural gas prices, causing periodic shortages. From time to time, there have been shortages of drilling and workover rigs, pipe and other equipment as demand for rigs and equipment has increased along with the number of wells being drilled. In particular, in recent years the high level of drilling activity in the Permian Basin has resulted in equipment shortages in those areas. We have committed in the past, and we may in the future commit, to drilling contracts with various third parties that contain penalties for early terminations. These penalties could negatively impact our financial statements upon contract termination. Rig shortages as well as rig related fees could result in delays or cause us to incur significant expenditures that are not provided for in our capital budget, which could have a material adverse effect on our business, financial condition or results of operations.
Competition in the oil and natural gas industry is intense, making it more difficult for us to acquire properties, market oil, NGL and natural gas and secure trained personnel.
Our ability to acquire additional locations and to find and develop reserves in the future willmay depend on our ability to evaluate and select suitable properties and to consummate transactions in a highly competitive environment for acquiring properties, marketing oil, NGL and natural gas and securing trained personnel. Also, there is substantial competition for capital available for investment in the oil, NGL and natural gas industry, especially in our focus areas. Many of our competitors possess and employ financial, technical and personnel resources substantially greater than ours. Those companies may be able to pay more for productive oil, NGL and natural gas properties and exploratory locations and to evaluate, bid for and purchase a greater number of properties and locations than our financial or personnel resources permit. In addition, other companies may be able to offer better compensation packages to attract and retain qualified personnel than we are able to offer. The cost to attract and retain qualified personnel has increased due to competition and may increase substantially in the future. We may not be able to compete successfully in the future in acquiring prospective reserves, developing reserves, marketing hydrocarbons, attracting and retaining quality personnel and raising additional capital, which could have a material adverse effect on our business.
Technological advancements and trends in our industry affect the demand for certain types of equipment.
Technological advancements and trends in our industry affect the demand for certain types of equipment. Especially in times when commodity prices are high, the demand for drilling rigs that are able to drill horizontally in the Permian Basin increases. In addition, oil and gas exploration and production companies have increased the use of "pad drilling" in recent years whereby a series of horizontal wells are drilled in succession by walking or skidding a drilling rig at a single-site location. If we are unable to secure such rigs in a timely or cost-efficient manner it could have a material adverse effect on our business.
The loss of senior management or technical personnel could materially adversely affect operations.
We depend on the services of our senior management and technical personnel. The loss of the services of our senior management or technical personnel, including Randy A. Foutch, our Chairman and Chief Executive Officer, could have a material adverse effect on our operations. We do not maintain, nor do we plan to obtain, any insurance against the loss of any of these individuals.
A significant reduction by Warburg Pincus of its ownership interest in us could adversely affect us.
Warburg Pincus is our largest stockholder and two members of our board of directors are affiliates of Warburg Pincus. As of December 31, 2012,2015, Warburg Pincus owned approximately 68%41.0% of our outstanding common stock. We believe that Warburg Pincus' substantial ownership interest in us provides them with an economic incentive to assist us to be successful. However, Warburg Pincus is not obligated to maintain its ownership interest in us and may elect at any time to sell all or a substantial portion of or otherwise reducechange its ownership interestposition in us.our stock. If Warburg Pincus sells all or a substantial portion of its ownership interest in us, Warburg Pincus may have less incentive to assist in our success and its affiliates that are members of our board of directors may resign. Such actions could

47



adversely affect our ability to successfully implement our business strategies, which could adversely affect our cash flows or results of operations.
We have limited control over activities on properties we do not operate, which could materially reduce our production and revenues.
A portion of our business activities is conducted through joint operating agreements under which we own partial interests in oil and natural gas properties. If we do not operate the properties in which we own an interest, we do not have control over normal operating procedures, expenditures or future development of the underlying properties. The failure of an operator of our wells to adequately perform operations or an operator's breach of the applicable agreements could materially reduce our production and revenues. The success and timing of our drilling and development activities on properties operated by others, therefore, depends upon a number of factors outside of our control, including the operator's timing and amount of capital expenditures, expertise and financial resources, inclusion of other participants in drilling wells and use of technology. Because we do not have a majority interest in most wells that we do not operate, we may not be in a position to remove the operator in the event of poor performance.
Our producing properties are in a concentrated geographic area, making us vulnerable to risks associated with operating in one major geographic area.
Our producing properties are geographically concentrated in the Permian Basin and Anadarko Granite Wash. At December 31, 2012, substantially all of our total estimated proved reserves were attributable to properties located in these areas. As a result of this concentration, we may be disproportionately exposed to the impact of regional supply and demand factors, delays or interruptions of production from wells in this area caused by governmental regulation, processing or transportation capacity constraints, market limitations, water shortages or other drought-related conditions or interruption of the processing or transportation of oil or natural gas. In addition, if we are successful in divesting our non-Permian Basin assets, these risks associated with concentration will increase.

39



Seasonal weather conditions and lease stipulations adversely affect our ability to conduct drilling activities in some of the areas where we operate.
Oil and natural gas operations in our operating areas can be adversely affected by seasonal weather conditions and lease stipulations designed to protect various wildlife. This limits our ability to operate in those areas and can intensify competition during those months for drilling rigs, oilfield equipment, services, supplies and qualified personnel, which may lead to periodic shortages. These constraints and the resulting shortages or high costs could delay our operations and materially increase our operating and capital costs.
Increases in interest rates could adversely affect our business.
Our business and operating results can be harmed by factors such as the availability, terms of and cost of capital, increases in interest rates or a reduction in credit rating. These changes could cause our cost of doing business to increase, limit our ability to pursue acquisition opportunities, reduce our cash flow available for drilling and place us at a competitive disadvantage. For example, as of December 31, 2012, we have approximately $660 million of additional borrowing capacity on our senior secured credit facility, subject to compliance with financial covenants. The impact of a 1.0% increase in interest rates on an assumed borrowing of the full $825 million available on our senior secured credit facility would result in increased annual interest expense of approximately $8.3 million and a corresponding decrease in our net income before taking into account the effects of increased interest rates on the value of our interest rate contracts. Recent and continuing disruptions and volatility in the global financial markets may lead to a contraction in credit availability impacting our ability to finance our operations. We require continued access to capital. A significant reduction in our cash flows from operations or the availability of credit could materially and adversely affect our ability to achieve our planned growth and operating results.
We may be subject to risks in connection with acquisitions of properties.
The successful acquisition of producing properties requires an assessment of several factors, including:
recoverable reserves;
future oil, NGL and natural gas prices and their applicable differentials;
timing of development;
capital and operating costs; and
potential environmental and other liabilities.
The accuracy of these assessments is inherently uncertain. Our assessment will not reveal all existing or potential problems nor will it permit us to become sufficiently familiar with the properties to fully assess their deficiencies and capabilities. Inspections may not always be performed on every well, and environmental problems are not necessarily observable even when an inspection is undertaken. Even when problems are identified, the seller may be unwilling or unable to provide effective contractual protection against all or part of the problems. We often are not entitled to contractual indemnification for environmental liabilities and acquire properties on an "as is" basis. Even in those circumstances in which we have contractual indemnification rights for pre-closing liabilities, it remains possible that the seller will not be able to fulfill its contractual obligations. Problems with properties we acquire could have a material adverse effect on our business, financial condition and results of operations.
We may be unable to make attractive acquisitions or successfully integrate acquired businesses, and any inability to do so may disrupt our business and hinder our ability to grow.
In the future we may make acquisitions of businesses that complement or expand our current business. We may not be able to identify attractive acquisition opportunities. Even if we do identify attractive acquisition opportunities, we may not be able to complete the acquisition or do so on commercially acceptable terms.
The success of any completed acquisition will depend on our ability to integrate effectively the acquired business into our existing operations. The process of integrating acquired businesses may involve unforeseen difficulties and may require a disproportionate amount of our managerial and financial resources. In addition, possible future acquisitions may be larger and for purchase prices significantly higher than those paid for earlier acquisitions. No assurance can be given that we will be able to identify additional suitable acquisition opportunities, negotiate acceptable terms, obtain financing for acquisitions on acceptable terms or successfully acquire identified targets. Our failure to achieve consolidation savings, to incorporate the acquired businesses and assets into our existing operations successfully or to minimize any unforeseen operational difficulties could have a material adverse effect on our financial condition and results of operations.
We have incurred losses from operations for various periods since our inception and may do so in the future.
We incurred net losses from our inception to December 31, 2006 of approximately $1.8 million and for each of the years ended December 31, 2007, 2008 and 2009 of approximately $6.1 million, $192.0 million and $184.5 million,

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respectively. Our financial statements include deferred tax assets, which require management's judgment when evaluating whether they will be realized. Our development of and participation in an increasingly larger number of locations has required and will continue to require substantial capital expenditures. The uncertainty and factors described throughout this section may impede our ability to economically find, develop, exploit and acquire oil and natural gas reserves and realize our deferred tax assets. As a result, we may not be able to achieve or sustain profitability or positive cash flows from operating activities in the future. See "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations—Critical accounting policies and estimates."
The inability of one or more of our customers to meet their obligations may adversely affect our financial results.
Substantially all of our accounts receivable result from oil and natural gas sales or joint interest billings to third parties in the energy industry. At December 31, 2012, four customers accounted for 10% or greater of our oil and natural gas sales receivables: 25.7%, 13.7%, 13.0% and 10.7%. This concentration of customers and joint interest owners may impact our overall credit risk in that these entities may be similarly affected by changes in economic and other conditions. In addition, our oil and natural gas hedging arrangements expose us to credit risk in the event of nonperformance by counterparties. Current economic circumstances may further increase these risks.
We require a significant amount of cash to service our indebtedness. Our ability to generate cash depends on many factors beyond our control.
Our ability to make payments on and to refinance our indebtedness and to fund planned capital expenditures depends on our ability to generate cash in the future. This, to a certain extent, is subject to general economic, financial, competitive, legislative, regulatory and other factors that are beyond our control. We cannot assure you that we will generate sufficient cash flow from operations or that future borrowings will be available to us under our senior secured credit facility or otherwise in an amount sufficient to enable us to pay our indebtedness or to fund our other liquidity needs. We may need to refinance all or a portion of our indebtedness at or before maturity. We cannot assure you that we will be able to refinance any of our indebtedness on commercially reasonable terms or at all.
We may incur significant additional amounts of debt.
As of December 31, 2012,February 16, 2016, we had total long-term indebtedness of approximately $1.2$1.5 billion. In addition, we may be able to incur substantial additional indebtedness, including secured indebtedness, in the future. The restrictions on the incurrence of additional indebtedness contained in the indentures governing our senior unsecured notesSenior Unsecured Notes and in our senior secured credit facilitySenior Secured Credit Facility are subject to a number of significant qualifications and exceptions, and under certain circumstances, the amount of indebtedness that could be incurred in compliance with these restrictions could be substantial. If new debt is added to our existing debt levels, the related risks that we face would increase and may make it more difficult to satisfy our existing financial obligations. In addition, the restrictions on the incurrence of additional indebtedness contained in the indentures governing the senior unsecured notesSenior Unsecured Notes apply only to debt that constitutes indebtedness under the indentures.
Our debt agreements contain restrictions that will limit our flexibility in operating our business.
Our senior secured credit facility and the indentures governing our senior unsecured notes each contain, and any future indebtedness we incur may contain, various covenants that limit our ability to engage in specified types of transactions. These covenants limit our ability to, among other things:
incur additional indebtedness;
pay dividends on, repurchase or make distributions in respect of our capital stock or make other restricted payments;
make certain investments;
sell certain assets;
create liens;
consolidate, merge, sell or otherwise dispose of all or substantially all of our assets; and
enter into certain transactions with our affiliates.
As a result of these covenants, we are limited in the manner in which we may conduct our business and we may be unable to engage in favorable business activities or finance future operations or our capital needs. In addition, the covenants in our senior secured credit facility require us to maintain a minimum working capital ratio and minimum interest coverage ratio and also limit our capital expenditures. A breach of any of these covenants could result in a default under one or more of these agreements, including as a result of cross default provisions and, in the case of our senior secured credit facility, permit the lenders to cease making loans to us. Upon the occurrence of an event of default under our senior secured credit facility, the

41



lenders could elect to declare all amounts outstanding under our senior secured credit facility to be immediately due and payable and terminate all commitments to extend further credit. Such actions by those lenders could cause cross defaults under our other indebtedness, including the senior unsecured notes. If we were unable to repay those amounts, the lenders under our senior secured credit facility could proceed against the collateral granted to them to secure that indebtedness. We pledged a significant portion of our assets as collateral under our senior secured credit facility. If the lenders under our senior secured credit facility accelerate the repayment of the borrowings thereunder, the proceeds from the sale or foreclosure upon such assets will first be used to repay debt under our senior secured credit facility, and we may not have sufficient assets to repay our unsecured indebtedness thereafter.
We may incur more taxes and certain of our projects may become uneconomic if certain federal income tax deductions currently available with respect to oil and natural gas exploration and development are eliminated as a result of future legislation.
Legislation has been proposed that would, if enacted, eliminate certain key U.S. federal income tax preferences currently available to oil and natural gas exploration and production companies. These changes include, but are not limited to (i) the repeal of the percentage depletion allowance for oil and natural gas properties, (ii) the elimination of current deductions for intangible drilling and development costs, (iii) the elimination of the deduction for certain U.S. production activities and (iv) an extension of the amortization period for certain geological and geophysical expenditures. In addition, the President of the United States recently proposed adding a $10.25 per Bbl tax on crude oil produced in the United States. It is unclear whether any of the foregoing changes will actually be enacted or how soon any such changes could become effective. The passage of any legislation as a result of these proposalsAny such change or anysimilar other similar change in U.S. federal income tax law could eliminate or postpone certain tax deductions that are currently available with respect to oil and natural gas exploration and development. Any such change could materially adversely affect our financial condition and results of operations by increasing the costs we incur which would in turn make it uneconomic to drill some locations if commodity prices are not sufficiently high, resulting in lower revenues and decreases in production and reserves.
Loss of our information and computer systems could adversely affect our business.
We are heavily dependent on our information systems and computer based programs, including our well operations information, seismic data, electronic data processing and accounting data. If any of such programs or systems were to fail or create erroneous information in our hardware or software network infrastructure or we were subject to cyberspace breaches or attacks, possible consequences include our loss of communication links, inability to find, produce, process and sell oil, NGL and natural gas and inability to automatically process commercial transactions or engage in similar automated or computerized business activities. Any such consequence could have a material adverse effect on our business.

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Our business could be negatively impacted by security threats, including cyber-security threats, and other disruptions.
As an oil and natural gas producer, we face various security threats, including cyber-security threats to gain unauthorized access to sensitive information or to render data or systems unusable, threats to the safety of our employees, threats to the security of our facilities and infrastructure or third partythird-party facilities and infrastructure, such as processing plants and pipelines, and threats from terrorist acts. Cyber-security attacks in particular are evolving and include, but are not limited to, malicious software, attempts to gain unauthorized access to data, and other electronic security breaches that could lead to disruptions in critical systems, unauthorized release of confidential or otherwise protected information and corruption of data. Although we utilize various procedures and controls to monitor and protect against these threats and to mitigate our exposure to such threats, there can be no assurance that these procedures and controls will be sufficient in preventing security threats from materializing. If any of these events were to materialize, they could lead to losses of sensitive information, critical infrastructure, personnel or capabilities essential to our operations and could have a material adverse effect on our reputation, financial position, results of operations or cash flows.
Risks relating to our common stock
Our amended and restated certificate of incorporation, amended and restated bylaws, and Delaware state law contain provisions that may have the effect of delaying or preventing a change in control and may adversely affect the market price of our capital stock.
Our amended and restated certificate of incorporation authorizes our board of directors to issue preferred stock without any further vote or action by the stockholders. The rights of the holders of our common stock will be subject to the rights of the holders of any preferred stock that may be issued in the future. The issuance of preferred stock could delay, deter or prevent a change in control and could adversely affect the voting power or economic value of your shares.
In addition, some provisions of our amended and restated certificate of incorporation and amended and restated bylaws could make it more difficult for a third party to acquire control of us, even if the change of control would be beneficial to our stockholders, including:

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limitations on the ability of our stockholders to call special meetings;
at such time as Warburg Pincus no longer beneficially owns more than 50% of our outstanding common stock, any action by stockholders may no longer be effected by written consent of the stockholders;
at such time as Warburg Pincus no longer beneficially owns more than 50% of our outstanding common stock, our board of directors will be divided into three classes with each class serving staggered three year terms;
a separate vote of 75% of the voting power of the outstanding shares of capital stock in order for stockholders to amend the bylaws in certain circumstances; and
advance notice provisions for stockholder proposals and nominations for elections to the board of directors to be acted upon at meetings of stockholders.
Delaware law prohibits us from engaging in any business combination with any "interested stockholder," meaning generally that a stockholder who owns 15% of our stock cannot acquire us for a period of three years from the date such stockholder became an interested stockholder, unless various conditions are met, such as the approval of the transaction by our board of directors. Warburg Pincus, however, is not subject to this restriction.
The concentration of our capital stock ownership among our largest stockholder will limit yourother stockholders' ability to influence corporate matters.
As of December 31, 2012,2015, Warburg Pincus owned approximately 68%41.0% of our outstanding common stock. Consequently, Warburg Pincus has significant influence over all matters that require approval by our stockholders, including the election of directors and approval of significant corporate transactions. This concentration of ownership limits the ability of other stockholders to influence corporate matters.
Furthermore, conflicts of interest could arise in the future between us, on the one hand, and Warburg Pincus and its affiliates, including its portfolio companies, on the other hand, concerning among other things, potential competitive business activities or business opportunities. Warburg Pincus LLC is a private equity firm that has invested in, among other things, companies in the energy industry. As a result, Warburg Pincus' existing and future portfolio companies which it controls may compete with us for investment or business opportunities. These conflicts of interest may not be resolved in our favor.
We have also renounced our interest in certain business opportunities. Our amended and restated certificate of incorporation provides that, to the fullest extent permitted by applicable law, we renounce any interest or expectancy in any business opportunity, transaction or other matter in which Warburg Pincus or any private fund that it manages or advises, any of their respective officers, directors, partners and employees, and any portfolio company in which such persons or entities have an equity interest (other than us and our subsidiaries) (each, a "specified party") participates or desires or seeks to participate and that involves any aspect of the energy business or industry, even if the opportunity is one that we might reasonably have pursued or had the ability or desire to pursue if granted the opportunity to do so, and no such specified party shall be liable to us for breach of any fiduciary or other duty, as a director or officer or controlling stockholder or otherwise, by reason of the fact that such specified party pursues or acquires any such business opportunity, directs any such business opportunity to another person or fails to present any such business opportunity, or information regarding any such business opportunity, to us. Notwithstanding the foregoing, we do not renounce any interest or expectancy in any business opportunity, transaction or other matter that is offered in writing solely to (i) one of our directors or officers who is not also a specified party or (ii) a specified party who is one of our directors, officers or employees and is offered such business opportunity solely in his or her capacity as our director, officer or employee. By renouncing our interest and expectancy in any business opportunity that from time to time may be presented to Warburg Pincus and its affiliates, our business and prospects could be adversely affected if attractive business opportunities are procured by such parties for their own benefit rather than for ours.
Our amended and restated certificate of incorporation, amended and restated bylaws, and Delaware state law contain provisions that may have the effect of delaying or preventing a change in control and may adversely affect the market price of our capital stock.
Our amended and restated certificate of incorporation authorizes our board of directors to issue preferred stock without any further vote or action by the stockholders. The rights of the holders of our common stock will be subject to the rights of the holders of any preferred stock that may be issued in the future. The issuance of preferred stock could delay, deter or prevent a change in control and could adversely affect the voting power or economic value of our shares.

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In addition, some provisions of our amended and restated certificate of incorporation and amended and restated bylaws could make it more difficult for a third party to acquire control of us, even if the change of control would be beneficial to our stockholders, including:
limitations on the ability of our stockholders to call special meetings;
a separate vote of 75% of the voting power of the outstanding shares of capital stock in order for stockholders to amend the bylaws in certain circumstances;
our board of directors is divided into three classes with each class serving staggered three-year terms;
stockholders do not have the right to take any action by written consent; and
advance notice provisions for stockholder proposals and nominations for elections to the board of directors to be acted upon at meetings of stockholders.
Delaware law prohibits us from engaging in any business combination with any "interested stockholder," meaning generally that a stockholder who owns 15% of our stock cannot acquire us for a period of three years from the date such stockholder became an interested stockholder, unless various conditions are met, such as the approval of the transaction by our board of directors. Warburg Pincus, however, is not subject to this restriction.
The availability of shares for sale in the future could reduce the market price of our common stock.
Our board of directors has the authority, without action or vote of our stockholders, to issue all or any part of our authorized but unissued shares of common stock. In the future, we may issue securities to raise cash for acquisitions, to pay down debt, to fund capital expenditures or general corporate expenses, in connection with the exercise of stock options or to satisfy our obligations under our incentive plans. We may also acquire interests in other companies by using a combination of cash and our common stock or just our common stock. We may also issue securities convertible into, exchangeable for, or that represent the right to receive, our common stock. Any of these events may dilute your ownership interest in our Company, reduce our earnings per share and have an adverse impact on the price of our common stock.
Because we have no plans to pay, and are currently restricted from paying dividends on our common stock, investors must look solely to stock appreciation for a return on their investment in us.
We do not anticipate paying any cash dividends on our common stock in the foreseeable future. We currently intend to retain all future earnings to fund the development and growth of our business. Any payment of future dividends will be at the discretion of our board of directors and will depend on, among other things, our earnings, financial condition, capital requirements, level of indebtedness, statutory and contractual restrictions applying to the payment of dividends and other considerations that our board of directors deems relevant. Covenants contained in our senior secured credit facilitySenior Secured Credit Facility and the indentures governing our senior unsecured notesSenior Unsecured Notes restrict the payment of dividends. Investors must rely on sales of their common stock after price appreciation, which may never occur, as the only way to realize a return on their investment. Investors seeking cash dividends should not purchase our common stock.

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The availability of shares for sale in the future could reduce the market price of our common stock.
In the future, we may issue securities to raise cash for acquisitions. We may also acquire interests in other companies by using a combination of cash and our common stock or just our common stock. We may also issue securities convertible into, or exchangeable for, or that represent the right to receive, our common stock. Any of these events may dilute your ownership interest in our company, reduce our earnings per share and have an adverse impact on the price of our common stock.



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Item 1B.    Unresolved Staff Comments
Not applicable.During 2015, the SEC issued comment letters relating to the Company's previously filed annual report on Form 10-K for the fiscal year ended December 31, 2014 inquiring about the potential impact of current commodity prices and our development plans for our reserves. The Company responded to these comment letters and was notified by the SEC that it completed its review on February 11, 2016. No amendments to any prior filings were required.
Item 2.    Properties
The information required by Item 2. is contained in Item"Item 1. Business.Business".
Item 3.    Legal Proceedings
From time to time, we are subject to various legal proceedings arising in the ordinary course of business, including proceedings for which we have insurance coverage. As of the date hereof, we are not party to any legal proceedings whichthat we currently believe will have a material adverse effect on our business, financial position, results of operations or liquidity.
Item 4.    Mine Safety Disclosures
Not applicable.

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Part II

Item 5.    Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Market for Registrant's Common Equity.    Our common stock is listed on the New York Stock Exchange ("NYSE") under the symbol "LPI"."LPI." The following table sets forth the range of high and low sales prices of our common stock as reported by the NYSE:
  Price per share
  High Low
2012:    
First Quarter $26.80
 $20.84
Second Quarter $26.63
 $18.79
Third Quarter $24.09
 $21.10
Fourth Quarter $22.37
 $17.11
2011:    
Fourth Quarter(1)
 $22.31
 $17.25

(1)Represents the period from December 15, 2011, the date on which our common stock began trading on the NYSE, through December 31, 2011.
  Price per share
  High Low
2015:    
Fourth Quarter $13.96
 $7.05
Third Quarter $12.02
 $7.79
Second Quarter $15.80
 $12.58
First Quarter $14.61
 $8.31
2014:





Fourth Quarter
$22.82

$7.39
Third Quarter
$30.80

$21.36
Second Quarter
$30.98

$25.43
First Quarter
$28.08

$22.91
On March 8, 2013,February 16, 2016, the last sale price of our common stock, as reported on the NYSE, was $17.88$4.79 per share.
Holders.    As of March 8, 2013,February 12, 2016, there were approximately 2456 holders of record of our common stock. The number of record holders does not include holders of shares in "street names" or persons, partnerships, associations, corporations or other entities identified in security position listings maintained by depositories.
Dividends.    We have not paid any cash dividends since our inception. Covenants contained in our senior secured credit facilitySenior Secured Credit Facility and the indentures governing our senior unsecured notesSenior Unsecured Notes restrict the payment of cash dividends on our common stock. See "Item 1A. Risk Factors—Risks related to our business—Our debt agreements contain restrictions that will limit our flexibility in operating our business" and "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operation—Operations—Cash flows—Debt." We currently intend to retain all future earnings for the development and growth of our business, and we do not anticipate declaring or paying any cash dividends to holders of our common stock in the foreseeable future.
Repurchase of Equity Securities.
Period 
Total number of shares withheld(1)
 Average price per share Total number of shares purchased as part of publicly announced plans Maximum number of shares that may yet be purchased under the plan
October 1, 2015 - October 31, 2015 2,846
 $11.18
 
 
November 1, 2015 - November 30, 2015 597
 $11.64
 
 
December 1, 2015 - December 31, 2015 2,810
 $8.37
 
 

(1)Represents shares that were withheld by us to satisfy employee tax withholding obligations that arose upon the lapse of restrictions on restricted stock.
Unregistered Sales of Equity Securities and Use of Proceeds.   None.




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Stock Performance Graph.    The following performance graph and related information shall not be deemed "soliciting material" or to be "filed" with the SEC, nor shall such information be incorporated by reference into any future filing under the Securities Act or Exchange Act, except to the extent that we specifically request that such information be treated as "soliciting material" or specifically incorporate such information by reference into such a filing.

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The performance graph below shows the cumulative total return to our common stockholders from December 15, 2011, the date on which our common stock began trading on the NYSE, through December 31, 2012,2015, as compared to the returns on the Standard and Poor's 500 Index ("S&P 500") and the Standard and Poor's 500 Oil & Gas Exploration & Production Index ("S&P O&G E&P"). The comparison was prepared based upon the following assumptions:
1.     $100 was invested in our common stock at its initial public offering price of $17 per share and invested in the S&P 500 and the S&P O&G E&P on December 15, 2011 at the closing price on such date; and
2.     Dividends, if any, are reinvested.

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Item 6.    Selected Historical Financial Data
The selected historical consolidated financial data presented below is not intended to replace our consolidated financial statements. You should read the following data along with "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" and the consolidated financial statements and related notes, each of which is included elsewhere in this Annual Report on Form 10-K.Report. We believe that the assumptions underlying the preparation of our financial statements are reasonable. The financial information included in this Annual Report on Form 10-K may not be indicative of our future results of operations, financial position andor cash flows.
Presented below is our historical financial data for the periods and as of the dates indicated. The historical financial data for the years ended December 31, 2012, 20112015, 2014 and 20102013 and the balance sheet data as of December 31, 20122015 and 20112014 are derived from our audited consolidated financial statements and the notes thereto included elsewhere in this Annual Report on Form 10-K.Report. The historical financial data for the yearyears ended December 31, 20092012 and 20082011 and the balance sheet data as of December 31, 2010, 20092013, 2012 and 20082011 are derived from our auditedconsolidated financial statements not included in this Annual Report on Form 10-K.Report.
  For the years ended December 31,
(in thousands, except per share data) 2012 2011 2010 2009 
2008(1)
Statement of operations data:          
Total revenues $588,080
 $510,270
 $242,000
 $96,574
 $74,187
Total costs and expenses 416,300
 308,371
 169,018
 350,103
 350,653
Operating income (loss) 171,780
 201,899
 72,982
 (253,529) (276,466)
Non-operating income (expense), net (77,177) (36,971) (12,546) (4,972) 30,702
Income (loss) before income taxes 94,603
 164,928
 60,436
 (258,501) (245,764)
Net income (loss) 61,654
 105,554
 86,248
 (184,495) (192,047)
Net income per common share:          
Basic $0.49
 $0.98
  
  
  
Diluted $0.48
 $0.98
  
  
  
  For the years ended December 31,
(in thousands, except per share data) 
2015(2)
 2014 
2013(3)
 2012 2011
Statement of operations data(1):
          
Total revenues $606,640
 $793,885
 $665,257
 $583,894
 $506,347
Total costs and expenses 3,078,154
 567,499
 450,906
 411,954
 303,827
Operating income (loss) (2,471,514) 226,386
 214,351
 171,940
 202,520
Non‑operating income (expense), net 84,633
 203,473
 (23,267) (77,176) (36,932)
Income (loss) from continuing operations before income taxes (2,386,881) 429,859
 191,084
 94,764
 165,588
Income tax benefit (expense) 176,945
 (164,286) (74,507) (33,003) (59,612)
Income (loss) from continuing operations (2,209,936) 265,573
 116,577
 61,761
 105,976
Income (loss) from discontinued operations, net of tax 
 
 1,423
 (107) (422)
Net income (loss) $(2,209,936) $265,573
 $118,000
 $61,654
 $105,554
Net income (loss) per common share:          
Basic:          
Income (loss) from continuing operations $(11.10) $1.88
 $0.88
 $0.49
 $0.99
Income from discontinued operations, net of tax 
 
 0.01
 
 (0.01)
Net income (loss) per share $(11.10) $1.88
 $0.89
 $0.49
 $0.98
Diluted:          
Income (loss) from continuing operations $(11.10) $1.85
 $0.87
 $0.48
 $0.98
Income from discontinued operations, net of tax 
 
 0.01
 
 
Net income (loss) per share $(11.10) $1.85
 $0.88
 $0.48
 $0.98

(1)The oil and natural gas properties that were a component of the Anadarko Basin Sale are not presented as held for sale nor are their results of operations presented as discontinued operations for the historical periods presented pursuant to the rules governing full cost accounting for oil and gas properties. The results of operations of the associated pipeline assets and various other associated property and equipment are presented as results of discontinued operations, net of tax.
(2)Includes full cost ceiling impairment expense of $2.4 billion for the year ended December 31, 2008 contains the results of operations2015.
(3)See Note 4.d to our consolidated financial statements included elsewhere in this Annual Report for the acquisition of properties from Linn Energy beginning August 15, 2008, the closing date of the property acquisition.additional information regarding our Anadarko Basin Sale.
  At December 31,
(in thousands) 2012 2011 2010 2009 2008
Balance sheet data:          
Cash and cash equivalents $33,224
 $28,002
 $31,235
 $14,987
 $13,512
Net property and equipment 2,113,891
 1,378,509
 809,893
 396,100
 350,702
Total assets 2,338,304
 1,627,652
 1,068,160
 625,344
 578,387
Current liabilities 262,068
 214,361
 150,243
 79,265
 101,864
Long-term debt 1,216,760
 636,961
 491,600
 247,100
 148,600
Stockholders' equity 831,723
 760,013
 411,099
 289,107
 318,364





4854



  For the years ended December 31,
(in thousands) 2012 2011 2010 2009 2008
Other financial data:          
Net cash provided by operating activities $376,776
 $344,076
 $157,043
 $112,669
 $25,332
Net cash used in investing activities           (940,751) (706,787) (460,547) (361,333) (490,897)
Net cash provided by financing activities 569,197
 359,478
 319,752
 250,139
 472,140

  As of December 31,
(in thousands) 2015 2014 2013 2012 2011
Balance sheet data:          
Cash and cash equivalents $31,154
 $29,321
 $198,153
 $33,224
 $28,002
Net property and equipment 1,200,255
 3,354,082
 2,204,324
 2,113,891
 1,378,509
Total assets(1)
 1,813,287
 3,910,701
 2,606,610
 2,318,368
 1,615,381
Current liabilities 216,815
 353,834
 253,969
 262,068
 214,361
Long-term debt, net(1)
 1,416,226
 1,779,447
 1,038,022
 1,196,824
 624,690
Stockholders' equity 131,447
 1,563,201
 1,272,256
 831,723
 760,013
  For the years ended December 31,
(in thousands, unaudited) 2012 2011 2010 2009 2008
Adjusted EBITDA(1)
 $452,569
 $388,446
 $194,502
 $104,908
 $49,305
  For the years ended December 31,
(in thousands) 2015 2014 
2013(2)
 2012 2011
Other financial data:          
Net cash provided by operating activities $315,947
 $498,277
 $364,729
 $376,776
 $344,076
Net cash used in investing activities           (667,507) (1,406,961) (329,884) (940,751) (706,787)
Net cash provided by financing activities 353,393
 739,852
 130,084
 569,197
 359,478

(1)Adjusted EBITDAAmounts have been reclassified to conform to the 2015 presentation. See Notes 2.c, 2.k, 5.h, 7 and 14 to our consolidated financial statements included elsewhere in this Annual Report for additional information.
(2)Net cash used in investing activities for the year ended December 31, 2013 is a non-GAAPoffset by proceeds received for the Anadarko Basin Sale. See Note 4.d to our consolidated financial measure. For a definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to net income (loss) see "—Non-GAAP financial measures and reconciliations" below.statements included elsewhere in this Annual Report for additional information.
Non-GAAP financial measures and reconciliationsmeasure
Adjusted EBITDA is a non-GAAP financial measure that we define as net income or loss plus adjustments for interestincome tax expense or benefit, depletion, depreciation depletion and amortization, bad debt expense, impairment of long-lived assets, write-off of deferred loan costs and other,expense, non-cash stock-based compensation, restructuring expenses, gains or losses on salederivatives, cash settlements of assets, unrealizedmatured commodity derivatives, cash settlements on early terminated and modified commodity derivatives, premiums paid for derivatives that matured during the period, interest expense, write-off of debt issuance costs, gains or losses on derivative financial instruments, realized lossesdisposal of assets, loss on interest rate swaps, realized gains or losses on canceled derivative financial instruments, non-cash stock-based compensationearly redemption of debt and income tax expense or benefit.buyout of minimum volume commitment. Adjusted EBITDA provides no information regarding a company'scompany’s capital structure, borrowings, interest costs, capital expenditures, working capital movement or tax position. Adjusted EBITDA does not represent funds available for discretionary use because those funds are required for debt service, capital expenditures and working capital, income taxes, franchise taxes and other commitments and obligations. However, our management believes Adjusted EBITDA is useful to an investor in evaluating our operating performance because this measure:
is widely used by investors in the oil and natural gas industry to measure a company's operating performance without regard to items excluded from the calculation of such term, which can vary substantially from company to company depending upon accounting methods, and book value of assets, capital structure and the method by which assets were acquired, among other factors;
helps investors to more meaningfully evaluate and compare the results of our operations from period to period by removing the effect of our capital structure from our operating structure; and
is used by our management for various purposes, including as a measure of operating performance, in presentations to our board of directors and as a basis for strategic planning and forecasting.
There are significant limitations to the use of Adjusted EBITDA as a measure of performance, including the inability to analyze the effect of certain recurring and non-recurring items that materially affect our net income or loss, the lack of comparability of results of operations to different companies and the different methods of calculating Adjusted EBITDA and ourreported by different companies. Our measurements of Adjusted EBITDA for financial reporting andas compared to compliance under our debt agreements differ.

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The following presents a reconciliation of net income (loss) for continuing and discontinued operations to Adjusted EBITDA:
  For the years ended December 31,
(in thousands, unaudited) 2015 2014 2013 2012 2011
Net income (loss) $(2,209,936) $265,573
 $118,000
 $61,654
 $105,554
Plus:          
Deferred income tax (benefit) expense (176,945) 164,286
 75,288
 32,949
 59,374
Depletion, depreciation and amortization 277,724
 246,474
 234,571
 243,649
 176,366
Bad debt expense 255
 342
 653
 
 
Impairment expense 2,374,888
 3,904
 
 
 243
Non-cash stock-based compensation, net of amounts capitalized 24,509
 23,079
 21,433
 10,056
 6,111
Restructuring expenses 6,042
 
 
 
 
Gain on derivatives, net (214,291) (327,920) (79,878) (8,388) (19,736)
Cash settlements received for matured commodity derivatives, net 255,281
 28,241
 4,046
 27,025
 3,719
Cash settlements received for early terminations and modification of commodity derivatives, net 
 76,660
 6,008
 
 
Premiums paid for derivatives that matured during the period(1)
 (5,167) (7,419) (11,292) (9,135) (4,104)
Interest expense 103,219
 121,173
 100,327
 85,572
 50,580
Write-off of debt issuance costs 
 124
 1,502
 
 6,195
Loss on disposal of assets, net 2,127
 3,252
 1,508
 52
 40
Loss on early redemption of debt 31,537
 
 
 
 
Buyout of minimum volume commitment 3,014
 
 
 
 
Adjusted EBITDA $472,257
 $597,769
 $472,166
 $443,434
 $384,342

(1)Reflects premiums incurred previously or upon settlement that are attributable to instruments settled in the respective periods presented.
  For the years ended December 31,
(in thousands, unaudited) 2012 2011 2010 2009 2008
Net income (loss) $61,654
 $105,554
 $86,248
 $(184,495) $(192,047)
Plus: 
        
Interest expense 85,572
 50,580
 18,482
 7,464
 4,410
Depreciation, depletion and amortization 243,649
 176,366
 97,411
 58,005
 33,102
Impairment of long-lived assets 
 243
 
 246,669
 282,587
Write-off of deferred loan costs 
 6,195
 
 
 
Loss on disposal of assets 52
 40
 30
 85
 2
Unrealized losses (gains) on derivative financial instruments 16,522
 (20,890) 11,648
 46,003
 (27,174)
Realized losses on interest rate derivatives           2,115
 4,873
 5,238
 3,764
 278
Non-cash stock-based compensation 10,056
 6,111
 1,257
 1,419
 1,864
Income tax expense (benefit) 32,949
 59,374
 (25,812) (74,006) (53,717)
Adjusted EBITDA $452,569
 $388,446
 $194,502
 $104,908
 $49,305

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Item 7.    Management's Discussion and Analysis of Financial Condition and Results of Operations
The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our consolidated financial statements and notes thereto appearing elsewhere in this Annual Report on Form 10-K.Report. The following discussion contains "forward-looking statements" that reflect our future plans, estimates, beliefs and expected performance. We caution that assumptions, expectations, projections, intentions or beliefs about future events may, and often do, vary from actual results and the differences can be material. Some of the key factors whichthat could cause actual results to vary from our expectations include changes in oil, NGL and natural gas prices, the timing of planned capital expenditures, availability of acquisitions, joint ventures and dispositions, uncertainties in estimating proved reserves and forecasting production results, potential failure to achieve production from development projects, operational factors affecting the commencement or maintenance of producing wells, the condition of the capital and financial markets generally, as well as our ability to access them, the proximity to and capacity of transportation facilities, and uncertainties regarding environmental regulations or litigation and other legal or regulatory developments affecting our business, as well as those factors discussed below and elsewhere in this Annual Report, on Form 10-K, all of which are difficult to predict. In light of these risks, uncertainties and assumptions, the forward-looking events discussed may not occur. See "Cautionary Statement Regarding Forward-Looking Statements" and "Item 1A. Risk Factors." All amounts, dollars and percentages presented in this Annual Report are rounded and therefore approximate.
Executive overview
We are an independent energy company focused on the acquisition, exploration development and acquisitiondevelopment of oil and natural gas properties, and the transportation of oil and natural gas from such properties, primarily in the Permian and Mid-Continent regions of the United States. Laredo Petroleum, Inc. was foundedBasin in October 2006 to explore, develop and operate oil and natural gas properties and hasWest Texas. Since our inception, we have grown rapidlyprimarily through itsour drilling program and by makingcoupled with select strategic acquisitions and joint ventures. On July 1, 2011, we completed the acquisition of Broad Oak Energy, Inc. (“Broad Oak”), whereby Broad Oak became a wholly-owned subsidiary of Laredo Petroleum, Inc., and its name was changed to Laredo Petroleum—Dallas, Inc. This acquisition was considered a combination of entities under common control and the historical and financial operating data presented herein are shown on a consolidated basis. In December 2011, we completed the Corporate Reorganization and IPO. See Note A to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional information regarding the Corporate Reorganization and the IPO.
Our financial and operating performance for the year ended December 31, 20122015 included the following:
Oil, NGL and natural gas sales of approximately $583.6$431.7 million,, compared to approximately $506.3$737.2 million for the year ended December 31, 2011;
2014;
Average daily productionsales volumes of 30,87444,782 BOE/D, compared to 23,70932,134 BOE/D for the year ended December 31, 2011;
2014;
EstimatedNet loss of $2.2 billion, including an after-tax non-cash full cost ceiling impairment of $2.4 billion, compared to net proved reservesincome of 188,632 MBOE as of$265.6 million for the year ended December 31, 2012, compared to 156,453 MBOE as of December 31, 2011;2014; and
Adjusted EBITDA (a non-GAAP financial measure) of $452.6$472.3 million,, compared to $388.4$597.8 million for the year ended December 31, 2011.
2014.

Three-stream reporting
Recent Developments
In February 2013, we announced we are exploring options to potentially divest certain assets located outside the Permian Basin. These assets consistAs of January 1, 2015, all of our Anadarko Granite Wash properties (approximately 11%natural gas processing agreements with various processors had been modified to allow us to take title to the NGL resulting from the processing of our natural gas. This enables us to report reserves, sales volumes, prices and revenues for NGL and natural gas separately for periods after January 1, 2015. As such, our reserves as of December 31, 2015 are reported in three streams: oil, NGL and natural gas. Our sales volumes, prices and reserves as of December 31, 2014 and 2013 were reported in two streams: crude oil and liquids-rich natural gas with the economic value of the NGL in our natural gas included in the wellhead natural gas price. This change impacts the comparability of 2015 with prior periods.
Reserves and non-cash full cost ceiling impairment
Our results of operations are heavily influenced by oil, NGL and natural gas prices, which have significantly declined and have remained low. These oil, NGL and natural gas price fluctuations are caused by changes in the global and regional supply of and demand for oil, NGL and natural gas, market uncertainty, economic conditions and a variety of additional factors. Since the inception of our oil and natural gas activities, commodity prices have experienced significant fluctuations, and additional changes in commodity prices may affect the economic viability of and our ability to fund drilling projects, as well as the economic valuation and economic recovery of oil, NGL and natural gas reserves.
As discussed previously in this Annual Report, during 2015 commodity prices for crude oil, NGL and natural gas experienced sharp declines, and this downward trend has accelerated further into the first quarter of 2016, with crude oil prices reaching a twelve-year low in February 2016. We have significantly reduced our capital budget for 2016. In addition, we have purposely significantly reduced the portion of our reserves that have historically been categorized as "proved undeveloped" or "PUD." We have adjusted our long-range five-year SEC PUD bookings methodology because given the current economic price environment, coupled with (i) our efforts to develop our acreage in the most efficient manner possible and determine which

57



potential locations will be most profitable and (ii) the uncertain effect that such environment will have on the industry's access to the capital markets, we believe that we can optimize the value for our shareholders by maintaining greater flexibility in choosing the specific drilling locations that may yield the greatest rates of return.
As our activities to date have indicated, the majority of our acreage represents a resource play, and with the benefit of improved technology, infrastructure investments and focused cost reduction efforts, we believe we have a significant number of acreage locations to drill even at the current commodity prices. In the near-term, our goal is to drill those locations that we anticipate have the potential to provide the greatest economic return and enhance shareholder value, and we have determined that the most efficient way to accomplish this is to maintain the flexibility to choose those locations based upon our continuing insight as we drill and collect data across our acreage, regardless of SEC reserve-booking status. Reducing our future PUD commitments provides us the most flexibility to maximize our rate of return at prevailing conditions and minimize the requirement to drill wells previously assigned under very different circumstances as specific PUD locations. Accordingly, we have reduced our booked PUD locations to those we have reasonable certainty to believe that we will develop in at least a two-year time horizon while maintaining the flexibility to add new PUD locations and convert other locations to proved developed reserves as our plans deem appropriate and opportunistic.
Ryder Scott, our independent reserve engineers, estimated net100% of our proved reserves as of year-end)December 31, 2015, 2014 and 2013. As of December 31, 2015, we had 125,698 MBOE of estimated proved reserves as wellcompared to 247,322 MBOE of estimated proved reserves as of December 31, 2014 and 203,615 MBOE of estimated proved reserves as of December 31, 2013. For prices used to value our reserves, see Note 2.g to our consolidated financial statements included elsewhere in this Annual Report. Our net book value of evaluated oil and natural gas properties ownedexceeded the full cost ceiling amount during the second, third and fourth quarters of 2015, and as such, we recorded non-cash full cost ceiling impairments during these periods of $488.0 million, $906.4 million and $975.0 million, respectively. See Note 2.g to our consolidated financial statements included elsewhere in this Annual Report for additional discussions of our full cost impairments.
We have entered into a number of commodity derivatives, which have enabled us to offset a portion of the changes in our cash flow caused by price fluctuations on our oil and natural gas production as discussed in "Item 7A. Quantitative and Qualitative Disclosures About Market Risk."
Potential future low commodity price impact on our development plans, reserves and full cost impairment
Oil, NGL and natural gas prices have remained low in the Central Texas Panhandle (Hansford, Hutchinson, Ochiltreefirst quarter of 2016. If prices remain at or below the current low levels, subject to numerous factors and Roberts countiesinherent limitations, and all other factors remain constant, we will incur an additional non-cash full cost impairment in Texas)the first quarter of 2016, which will have an adverse effect on our results of operations.
There are numerous uncertainties inherent in the estimation of proved reserves and accounting for oil and natural gas properties in future periods. In addition to unknown future commodity prices, other uncertainties include (i) changes in drilling and completion costs, (ii) changes in oilfield service costs, (iii) production results, (iv) our ability, in a low price environment, to strategically drill the most economic locations in our multi-stack horizontal targets, (v) income tax impacts, (vi) potential recognition of additional proved undeveloped reserves, (vii) any potential value added to our proved reserves when testing recoverability from drilling unbooked locations and (viii) the inherent significant volatility in the commodity prices for oil and natural gas recently exemplified by the large changes in recent months.
Each of the above factors is evaluated on a quarterly basis and if there is a material change in any factor it is incorporated into our internal reserve estimation utilized in our quarterly accounting estimates. We use our internal reserve estimates to evaluate, also on a quarterly basis, the reasonableness of our reserve development plans for our reported reserves. Changes in circumstance, including commodity pricing, economic factors and the Eastern Anadarko Basin (Caddo, Grady and Comanche countiesother uncertainties described above may lead to changes in Oklahoma) (collectively, approximately 4%our reserve development plans.
We have set forth below a calculation of a potential future further reduction of our estimated net proved reserves. Such implied impairment and decrease in reserves atshould not be interpreted to be indicative of our development plan or of our actual future results. Each of the uncertainties noted above has been evaluated for material known trends to be potentially included in the estimation of possible first-quarter effects. Based on such time). There can be no assurancereview, we determined that the divestitureimpact of any assetsdecreased commodity prices is the only significant known variable necessary in the following scenario.
Both our hypothetical first-quarter 2016 full cost ceiling calculation and our hypothetical reserves estimates have been prepared by substituting (i) $41.38 per barrel for oil, (ii) $11.33 per barrel for NGL and (iii) $1.78 per MMBtu for natural gas (the "Pro Forma Prices") for the respective Realized Prices as of December 31, 2015. All other inputs and assumptions have been held constant. Accordingly, this estimation strictly isolates the estimated impact of more current commodity prices on the first-quarter 2016 Realized Prices that will be completed.utilized in our full cost ceiling calculation and our reserves estimate. The Pro Forma Prices use a slightly modified Realized Price, calculated as the unweighted arithmetic average of the first-day-of-the-

58



month price for oil, NGL and natural gas on the first day of the month for the 11 months ended February 1, 2016, with the price for February 1, 2016 held constant for the remaining twelfth month of the calculation. Based solely on the substitution of the Pro Forma Prices into our December 31, 2015 reserve estimates, the implied first-quarter impairment would be $132 million and the implied impact to our December 31, 2015 reserves of 126 MMBOE would be a reduction of 9 MMBOE. We believe that substituting the Pro Forma Prices into our December 31, 2015 internal reserve estimates may help provide users with an understanding of the potential first-quarter price impact on our March 31, 2016 full cost ceiling test and in preparing our year-end reserve estimates.
Mergers and acquisitions
Our use of capital for development and acquisitions allows us to direct our capital resources toward what we believe to be the most attractive opportunities as market conditions evolve. We have historically developed properties that we believe will meet or exceed our rate of return criteria. For acquisitions of properties with additional development and exploration potential, we have focused on acquiring properties that we expect to operate so that we can control the timing and implementation of capital spending. We also make acquisitions in core, mature areas where management can leverage knowledge and experience to identify upsidesupside potential in the assets.
As noted above, on July 1, 2011,On September 6, 2013, we consummatedcompleted the acquisition of Broad Oakevaluated and unevaluated oil and natural gas properties located in Glasscock County, Texas in the Permian Basin, from private parties for consideration$36.7 million consisting of (i) cash paymentsand 123,803 shares of our restricted common stock, subject to customary closing adjustments.
On February 25, 2014, we completed the acquisition of the mineral interests underlying 278 net acres in Glasscock County, Texas in the Midland Basin for $7.3 million. These mineral interests entitle us to receive royalties on all production from this acreage with no additional future capital or operating expenses required.
On June 11, 2014, we completed the acquisition of evaluated and unevaluated oil and natural gas properties, totaling $82.0460 net acres, located in Reagan County, Texas in the Midland Basin for $4.7 million, net of closing adjustments.
On June 23, 2014, we completed the acquisition of evaluated and unevaluated oil and natural gas properties, totaling 24 net acres, located in Glasscock County, Texas for $1.8 million.
On August 26, 2014, we completed a material acquisition of leasehold interests totaling 8,156 net acres in the Midland Basin, primarily within our core development area, for $192.5 million.
Divestitures
On August 1, 2013, we completed the Anadarko Basin Sale, consisting of oil and natural gas properties located in the Anadarko Granite Wash, Eastern Anadarko and Central Texas Panhandle (the "Anadarko Basin") in the State of Oklahoma and the State of Texas, associated pipeline assets and various other related property and equipment for a purchase price of $438.0 million. The purchase price (including the buyers' deposits) consisted of $400.0 million from certain affiliates of EnerVest, Ltd. and $38.0 million from other third parties in connection with the exercise of such third parties' preferential rights associated with certain of the oil and gas properties. Approximately $388.0 million of the purchase price, excluding closing adjustments, was allocated to oil and natural gas properties pursuant to the rules governing full cost accounting. After transaction costs and adjustments at closing reflecting an economic effective date of April 1, 2013, the net proceeds were $428.3 million, net of working capital adjustments. The net proceeds were used to pay off our Senior Secured Credit Facility and for working capital purposes.
Effective August 1, 2013, the operations and cash flows of these properties were eliminated from our ongoing operations, and we do not have continued involvement in the operation of these properties. The oil and natural gas properties, which are a component of the assets sold, are not presented as discontinued operations pursuant to the rules governing full cost accounting for oil and gas properties. The results of operations of the associated pipeline assets and various other related property and equipment have been presented as results of discontinued operations, net of tax. Accordingly, we have reclassified certain membersprior period amounts in the consolidated financial statements included elsewhere in this Annual Report as discontinued operations. See Note 4.d to our consolidated financial statements included elsewhere in this Annual Report for additional discussion of managementthese reclassifications and employees, (ii) equity issuancesthe Anadarko Basin Sale.
On December 20, 2013, we completed the sale of 86.537,000 net acres in the Dalhart Basin, including one producing well, for $20.4 million, preferred Laredo Petroleum, LLC unitssubject to Warburg Pincus, (iii) equity issuancescustomary closing adjustments. The net proceeds were used for working capital purposes.
On September 15, 2015, we completed the sale of 2.4 million preferred Laredonon-strategic and primarily non-operated properties and associated production totaling 6,060 net acres and 123 producing properties in the Midland Basin to a third-party buyer for a purchase price of $65.5 million. After transaction costs reflecting an economic effective date of July 1, 2015, the net proceeds were $64.8

5159



Petroleum, LLC units to certain directorsmillion, net of working capital and management of Broad Oakpost-closing adjustments. The net proceeds were used for working capital purposes. This divestiture did not represent a strategic shift and (iv) repayment of the $265.4 million of outstanding debt under the Broad Oak credit facility. Immediately following the consummation of such transaction, Laredo Petroleum, LLC assigned 100% of its ownership interest in Broad Oak to Laredo Petroleum, Inc. aswill not have a contribution to capital.major effect on our operations or financial results.
Core areasarea of operations
The oil and liquids-rich Permian Basin and the liquids-rich Anadarko Granite Wash areis characterized by multiple target horizons, extensive production histories, long-lived reserves, high drilling success rates and high initial production rates. As of December 31, 2012,2015, we had assembled 203,549135,408 net acres in the Permian Basin and 37,322 net acres in the Anadarko Granite Wash and had an interest in 1,411 gross producing wells. Based on a report by Ryder Scott, our independent reserve engineers, as of such date, we operated wells that represent approximately 95% of the value of our proved developed oil and natural gas reserves.
Reserves and pricing
Ryder Scott, our independent reserve engineers, estimated 100% of our proved reserves, reported on a two-stream basis, at December 31, 2012, 2011 and 2010. As of December 31, 2012, we had 188,632 MBOE of estimated net proved reserves as compared to 156,453 MBOE of estimated net proved reserves at December 31, 2011 and 136,560 MBOE of estimated net proved reserves at December 31, 2010.
Our results of operations are heavily influenced by commodity prices. Prices for oil and natural gas can fluctuate widely in response to relatively minor changes in the global and regional supply of and demand for oil and natural gas, market uncertainty, economic conditions and a variety of additional factors. Since the inception of our oil and natural gas activities, commodity prices have experienced significant fluctuations, and additional changes in commodity prices may affect the economic viability of drilling projects, as well as the economic valuation and economic recovery of oil and natural gas reserves.
Our reserves are reported in two streams: crude oil and liquids-rich natural gas. The economic value of the natural gas liquids in our natural gas is included in the wellhead natural gas price. The unweighted arithmetic average first-day-of-the-month index prices for the prior 12 months were $91.21 per Bbl for oil and $2.63 per MMBtu for natural gas at December 31, 2012, $92.71 per Bbl for oil and $3.99 per MMBtu for natural gas at December 31, 2011 and $75.96 per Bbl for oil and $4.15 per MMBtu for natural gas at December 31, 2010. The prices used to estimate proved reserves for all periods did not give effect to derivative transactions. These prices were held constant throughout the life of the properties and have been adjusted for quality, transportation fees, geographical differentials, marketing bonuses or deductions and other factors affecting the price received at the wellhead.
We have entered into a number of commodity derivatives, which have allowed us to offset a portion of the changes caused by price fluctuations on our oil and natural gas production as discussed in “Item 7A. Quantitative and Qualitative Disclosures About Market Risk.”Basin.
Sources of our revenue
Our revenues are primarily derived from the sale of oil, NGL and natural gas and the sale of purchased oil within the continental United States and do not include the effects of derivatives. For the year ended December 31, 2012,2015, our revenues arewere comprised of sales of approximately 70%54% oil, 29%8% NGL, 9% natural gas, 28% purchased oil and 1% for transportation, gathering, drillingmidstream service revenues. Our oil, NGL and production. Ournatural gas revenues may vary significantly from period to period as a result of changes in volumes of production sold and/or changes in commodity prices. Our midstream service revenues may vary due to the level of services provided to third parties for (i) gathered natural gas, (ii) gas lift fees, (iii) oil throughput fees and (iv) water services. Our sales of purchased oil revenue may vary due to changes in oil prices.
Principal components of our cost structure
Lease operating and natural gas transportation and treating expenses.These are daily costs incurred to bring oil and natural gas out of the ground and to the market, together with the daily costs incurred to maintain our producing properties. Such costs also include maintenance, repairs and non-routine workover expenses related to our oil and natural gas properties.
Production and ad valorem taxes.Production taxes are paid on produced oil, NGL and natural gas sold based on a percentage of revenues from products sold at market prices or at fixed rates established by federal, state or local taxing authorities. We take full advantage of all credits and exemptions in our various taxing jurisdictions. In general, the production taxes we pay correlate to the changes in oil, NGL and natural gas revenues. Ad valorem taxes are property taxes assessed based on a flat rate per oil or natural gas equivalent produced onthe value of our properties located in Texas.reserves attributed to our properties.
Drilling and production.Midstream service expenses. These are costs incurred to operate and maintain our (i) oil and natural gas gathering and transportation systems and related facilities, that support our(ii) centralized oil storage tanks, (iii) natural gas lift, rig fuel and centralized compression infrastructure and (iv) water storage, recycling and transportation facilities.
Costs of purchased oil. These are costs associated with purchasing oil from other producers and the transportation costs to bring it to market.
Drilling rig fees. These are costs incurred for the early termination of drilling activities.rig contracts.
General and administrative.administrative ("G&A"). These are costs incurred for overhead, including payroll and benefits for our corporate staff, costs of maintaining our headquarters, costs of managing our production and development operations, franchise taxes, audit and other fees for professional services, and legal compliance.

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Stock-based compensation.    These are costs incurred forcompliance and compensation expense related to employee and director stock awards, performance awards and option awards granted which have been recognized on a straight-line basis over the vesting period associated with the award.
Depreciation, depletionAccretion of asset retirement obligations. Accretion is a non-cash charge that represents changes in our asset retirement liability due to the passage of time.
Depletion, depreciation and amortization. Under the full cost accounting method, we capitalize all acquisition, exploration and development costs, including certain related employee costs, incurred for the purpose of finding oil and natural gas within a cost center and then systematically expense those costs on a units of production basis based on provedevaluated oil, NGL and natural gas reserve quantities. We calculate depletion on the following types of costs: (i) all capitalized costs, other than the cost of investments in unprovedunevaluated properties and major development projects for which provedevaluated reserves cannot yet be assigned, less accumulated amortization; (ii) the estimated future expenditures to be incurred in developing provedevaluated reserves; and (iii) the estimated dismantlement and abandonment costs, net of estimated salvage values. We calculate depreciation on the cost of fixed assets related to our pipelines and other fixed assets utilizing the straight-line method over the useful life of the asset.asset, or in the case of leasehold improvements over the shorter of the estimated useful lives of the assets or the terms of the related leases.
Impairment expense. ThisLong-lived assets are considered impaired when their net carrying value is greater than the costfuture undiscounted cash flows. Once an asset is recognized as impaired, costs are incurred to reduce provedwrite the asset down. With the continuing volatility in commodity prices, we may incur additional write-downs on our oil and natural gas properties to the calculated full cost ceiling value and the write-downs of our materials properties. Materials

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and supplies inventory, consisting of pipe and well equipment, toline-fill are recorded at the lower of cost or market value at("LCM"), with costs determined using the end of the respective period.weighted-average cost method.
Other income (expense)
Realized and unrealized gainGain (loss) on commodity derivative financial instruments.derivatives. We utilize commodity derivative financial instrumentsderivatives to reduce our exposure to fluctuations in the price of crude oil and natural gas. This amount represents (i) the recognition of unrealized gains and losses associated with our open derivative contractsderivatives as commodity prices change and commodity derivative contractsderivatives expire or new ones are entered into, and (ii) our realized gains and losses on the settlement of these commodity derivative instruments.derivatives. We classify these gains and losses as operating activities in our consolidated statements of cash flows.
Realized and unrealized gainGain (loss) on interest rate derivative instruments.derivatives.     We utilizeIn prior periods, we utilized interest rate swaps and caps to reduce our exposure to fluctuations in interest rates on our outstanding debt. This amount represents (i) the recognition of unrealized gains and losses associated with our open interest rate derivative contractsderivatives as interest rates change and interest rate contractsderivatives expire or new ones are entered into, and (ii) our realized gains and losses on the settlement of these interest rate contracts. We classify these gains and losses as operating activities in our consolidated statements of cash flows. During each of the years ended December 31, 2013 and 2012, we had one interest rate swap and one interest rate cap outstanding for a total notional amount of $100.0 million with fixed pay rates ranging from 1.11% to 3.00% until their expiration in September 2013. We had no interest rate derivatives in place in 2015 or 2014.
Income (loss) from equity method investee. We have invested in a company where we own 49% of the ownership units. As such, weaccount for this investment under the equity method of accounting with our proportionate share of net income (loss) reflected in the consolidated statements of operations as "Loss from equity method investee" and the carrying amount reflected in the consolidated balance sheet as "Investment in equity method investee." See Note 15 to our consolidated financial statements included elsewhere in this Annual Report for additional information regarding this investment.
Interest expense.We finance a portion of our working capital requirements, capital expenditures and acquisitions with borrowings under our senior secured credit facility,Senior Secured Credit Facility and our senior unsecured notes and, prior to its termination on July 1, 2011, the Broad Oak credit facility.Senior Unsecured Notes. As a result, we incur interest expense that is affected by both fluctuations in interest rates and our financing decisions. We haveIn prior periods, we entered into various interest rate derivative contractsderivatives to mitigate the effects of interest rate changes. We do not designate these derivative contractsderivatives as hedges and therefore hedge accounting treatment is not applicable. Realized and unrealized gainsGains or losses on these interest rate contracts are included in non-operating income (expense) as discussed above. We reflect interest paid to the lenders and bondholders in interest expense. In addition, we include the amortization of deferred financingdebt issuance costs (including origination and amendment fees), commitment fees and annual agency fees in interest expense.
Interest and other income. This represents the interest received on our cash and cash equivalents as well as other miscellaneous income.
Loss on early redemption of debt. This represents the loss on extinguishment recognized in the early redemption of our January 2019 Notes in April 2015, related to the difference between the redemption price and the net carrying amount.
Write-off of debt issuance costs. Debt issuance fees, which are stated at cost, net of amortization, are amortized over the life of the respective debt agreements utilizing the effective interest and straight-line methods. Write-offs of such costs can occur when borrowing terms change and/or debt has been extinguished.
Loss on disposal of assets, net. This represents losses recorded from selling or disposing of property and equipment. Sale proceeds are compared with the recorded net book value of the asset and the appropriate gain (loss) is recorded.
Income tax expense. Income taxes in our financial statements are generally presented on a "consolidated"consolidated basis. However, U.S. tax laws do not allow tax losses of one entity to offset income and losses of another entity until after the consummation of the Broad Oak acquisition on July 1, 2011. As such, the financial accounting for the income tax consequences of each taxable entity is calculated separately for all periods prior to July 1, 2011.
Laredo Petroleum Holdings, Inc. and its subsidiariesWe are subject to federal and state corporate income taxes.taxes and Texas franchise tax. These income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basesbasis and operating losses and tax credit carry-forwards. Under this method, deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax laws or tax rates is recognized in income in the period that includes the enactment date.
On a quarterly basis, management evaluates the need for and adequacy of valuation allowances based on the expected realization of the deferred tax assets and adjusts the amount of such allowances, if necessary. We considered all available evidence, both positive and negative, in determining whether, based on the weight of that evidence, a valuation allowance was needed on either the federal or Oklahoma net operating loss carry-forwards. Such consideration included estimated future projected earnings based on existing reserves and projected future cash flows from our oil and natural gas reserves (including

5361



Resultsthe timing of operations
Forthose cash flows), the reversal of deferred tax liabilities recorded as of December 31, 2015, our ability to capitalize intangible drilling costs rather than expensing these costs in order to prevent an operating loss carry-forward from expiring unused and future projections of Oklahoma sourced income. During the year ended December 31, 2012 as compared to the year ended December 31, 2011, and for the year ended December 31, 2011 as compared to the year ended December 31, 2010
Production, revenue and pricing
The following table sets forth information regarding production, revenue and average sales prices per BOE for the periods presented:
 
 
 For the years ended December 31,
 
 
 2012 2011 2010
Production data:      
    Oil (MBbl) 4,775
 3,368
 1,648
    Natural gas (MMcf) 39,148
 31,711
 21,381
    Oil equivalents (MBOE)(1)
 11,300
 8,654
 5,212
    Average daily production (BOE/D)(1)
 30,874
 23,709
 14,278
    % Oil 42% 39% 32%
Revenues (in thousands):      
      Oil $414,932
 $306,481
 $126,891
      Natural gas 168,637
 199,774
 112,892
      Natural gas transportation and treating 4,511
 4,015
 2,217
           Total revenues $588,080
 $510,270
 $242,000
Average sales prices:      
     Oil, realized(2) ($/Bbl)
 $86.89
 $91.00
 $77.00
     Natural gas, realized(2) ($/Mcf)
 4.31
 6.30
 5.28
     Average Price, realized ($/BOE) 51.65
 58.50
 46.01
     Oil, hedged(3) ($/Bbl)
 86.69
 88.62
 77.26
     Natural gas, hedged(3) ($/Mcf)
 5.02
 6.67
 6.32
     Average Price, hedged ($/BOE) 54.03
 58.93
 50.37

(1) The volumes presented are based on actual results and are2015, we determined it is more likely than not calculated using the rounded numbers presented in the table above.
(2) Realized crude oil and natural gas prices are the actual prices realized at the wellhead after all adjustments for NGL content, quality, transportation fees, geographical differentials, marketing bonuses or deductions and other factors affecting the price at the wellhead.
(3) Hedged prices reflect the after effect ofthat we will not realize our commodity hedging transactions on our average sales prices. Our calculation of such after effects include realized gains and losses on cash settlements for commodity derivatives, which do not qualify for hedge accounting.net deferred tax assets. See Note F.47 to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional discussion of our valuation allowance.

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Results of operations consolidated
For the year ended December 31, 2015 as compared to the year ended December 31, 2014, and for the year ended December 31, 2014 as compared to the year ended December 31, 2013
Sales volume, revenue and pricing
The following table sets forth information regarding our realized gainsoil, NGL and losses on commodity derivatives.natural gas sales volumes, revenues and average sales prices from continuing operations per BOE sold, for the periods presented:
 
 
 For the years ended December 31,

 2015 2014 2013
Sales volumes:(1)
      
    Oil (MBbl) 7,610
 6,901
 5,487
    NGL (MBbl) 4,267
 
 
    Natural gas (MMcf) 26,816
 28,965
 34,348
    Oil equivalents (MBOE)(2)(3)
 16,346
 11,729
 11,211
    Average daily sales volumes (BOE/D)(3)
 44,782
 32,134
 30,716
    % Oil 47% 59% 49%
Oil, NGL and natural gas revenues (in thousands):(1)
      
    Oil $329,301
 $571,620
 $494,676
    NGL 50,604
 
 
    Natural gas 51,829
 165,583
 170,168
           Oil, NGL and natural gas sales $431,734
 $737,203
 $664,844
Average sales prices:(1)
      
    Oil, realized ($/Bbl)(4)
 $43.27
 $82.83
 $90.16
    NGL, realized ($/Bbl)(4)
 11.86
 
 
    Natural gas, realized ($/Mcf)(4)
 1.93
 5.72
 4.95
    Average price, realized ($/BOE)(4)
 26.41
 62.86
 59.29
    Oil, hedged ($/Bbl)(5)
 74.41
 85.77
 88.68
    NGL, hedged ($/Bbl)(5)
 11.86
 
 
    Natural gas, hedged ($/Mcf)(5)
 2.42
 5.73
 4.98
    Average price, hedged ($/BOE)(5)
 41.71
 64.62
 58.66

(1)For periods prior to January 1, 2015, we presented our sales volumes, revenues and average sales prices for oil and natural gas, which combined NGL with the natural gas stream, and did not separately report NGL. This change impacts the comparability of the three periods presented.
(2)BOE equivalents are calculated using a conversion rate of six Mcf per one Bbl.
(3)The volumes presented are based on actual results and are not calculated using the rounded numbers presented in the table above.
(4)Realized oil, NGL and natural gas prices are the actual prices realized at the wellhead adjusted for quality, transportation fees, geographical differentials, marketing bonuses or deductions and other factors affecting the price received at the wellhead. The prices presented are based on actual results and are not calculated using the rounded numbers presented in the table above.
(5)Hedged prices reflect the after-effect of our commodity hedging transactions on our average sales prices. Our calculation of such after-effects include current period settlements of matured commodity derivatives in accordance with GAAP and an adjustment to reflect premiums incurred previously or upon settlement that are attributable to instruments that settled in the period. The prices presented are based on actual results and are not calculated using the rounded numbers presented in the table above.
    

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The changesfollowing table presents cash settlements received (paid) for matured commodity derivatives and premiums incurred previously or upon settlement attributable to instruments that settled during the periods utilized in volumesour calculation of the hedged prices presented above:    
  For the years ended December 31,
(in thousands) 2015 2014 2013
Cash settlements received (paid) for matured commodity derivatives:      
Oil $241,391
 $26,803
 $(149)
Natural gas 13,890
 1,438
 4,195
Total $255,281
 $28,241
 $4,046
Premiums paid attributable to contracts that matured during the respective period:      
Oil $(4,464) $(6,497) $(7,970)
Natural gas (703) (922) (3,322)
Total $(5,167) $(7,419) $(11,292)
Changes in prices and prices shown in the table abovevolumes caused the following changes to our oil, NGL and natural gas revenuerevenues between the years ended December 31, 20102015, 2014 and 2011 and 2012:2013:
(in thousands) Oil Natural gas 
Total net
dollar effect
of change
 Oil NGL Natural gas 
Total net
dollar effect
of change
2010 Revenue $126,891
 $112,892
 $239,783
2013 Revenue $494,676
 $
 $170,168
 $664,844
Effect of changes in price 47,152
 32,345
 79,497
 (50,587) 
 22,303
 (28,284)
Effect of changes in volumes 132,440
 54,542
 186,982
 127,544
 
 (26,645) 100,899
Other (2) (5) (7) (13) 
 (243) (256)
2011 Revenue $306,481
 $199,774
 $506,255
2014 Revenue 571,620
 
 165,583
 737,203
Effect of changes in price (19,627) (77,904) (97,531) (301,036) 50,603
 (101,631) (352,064)
Effect of changes in volumes 128,032
 46,848
 174,880
 58,660
 
 (12,293) 46,367
Other 46
 (81) (35) 57
 1
 170
 228
2012 Revenue $414,932
 $168,637
 $583,569
2015 Revenue $329,301
 $50,604
 $51,829
 $431,734
Oil revenue. Our oil revenue is a function of oil production volumes sold and average sales prices received for those volumes. The decrease in oil revenue of $242.3 million, or 42%, for the year ended December 31, 2015 as compared to the year ended December 31, 2014, is mainly due to a 48% decrease in average oil prices realized, partially offset by a 10% increase in oil production.
NGL and natural gas revenues. On January 1, 2015, we began utilizing three-stream reporting, which impacts the comparability of 2015 with prior periods. Our NGL and natural gas revenues are a function of oilNGL and natural gas production, volumes sold and average sales prices received for those volumes. The total increasedecrease in oilNGL and natural gas revenues of approximately $77.3 million, or 15%, forfrom the year ended December 31, 20122015 as compared to the year ended December 31, 20112014, is largelymainly due to a 42% increasedecrease in oil production and a 23% increase in natural gas production volumes attributable mainly toaverage prices realized on our Permian and Anadarko Granite Wash areas, which were offset by lower prices received for oil and natural gas. The total increase in oilNGL and natural gas revenues of approximately $266.5 million, or 111%,production. Stripping out the NGL component from our liquids-rich natural gas results in a lower price received for residue natural gas during the year ended December 31, 20112015 as compared to the year ended December 31, 20102014 in which we received revenues from liquids-rich natural gas. The decrease in prices is largely due to a 104% increase in oil production and a 48% increase in natural gas production volumes as well aspartially offset by an increase in both oilNGL and natural gas prices realized for the year.

Natural gas transportation and treating. Our revenues related to natural gas transportation and treating increased by $0.5 millionproduction during the year ended December 31, 20122015 as compared to the year ended December 31, 20112014, converted to a three-stream basis.
The following table sets forth information regarding midstream service revenue and sales of purchased oil revenues for the periods presented:
 
 
 For the years ended December 31,
(in thousands) 2015 2014 2013
Revenues:      
    Midstream service revenues $6,548
 $2,245
 $413
    Sales of purchased oil 168,358
 54,437
 
           Total revenues $174,906
 $56,682
 $413

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Midstream service revenues. Our midstream service revenues from operations increased by $4.3 million during the year ended December 31, 2015 as compared to the year ended December 31, 2014, and $1.8 million during the year ended December 31, 20112014 as compared to the year ended December 31, 2010.2013. These increases were due to the increased sale of oilnatural gas, NGL and condensate fromoff our pipeline assetspipelines and facilities during each respective period which occurs on an infrequent basis, as well as an increase in thethird-party volumes transported through our pipeline.oil and natural gas gathering and transportation systems and related facilities.

Sales of purchased oil. During the year ended December 31, 2014, in order to fulfill our firm transportation commitment on the Bridgetex pipeline, we began purchasing oil in West Texas, transporting the product on the Bridgetex Pipeline and selling the product to a third party in the Houston market. Our revenues from sales of purchased oil increased by $113.9 million during the year ended December 31, 2015 as compared to the year ended December 31, 2014 due to a full year of activity in 2015 compared to a three month period during 2014.

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Costs and expenses

The following table sets forth information regarding costs and expenses from continuing operations and average costs per BOE sold for the periods presented:
 For the years ended December 31, For the years ended December 31,
(in thousands except for per BOE data) 2012 2011 2010
(in thousands except for per BOE sold data) 2015 2014 2013
Costs and expenses:            
Lease operating expenses $67,325
 $43,306
 $21,684
 $108,341
 $96,503
 $79,136
Production and ad valorem taxes 37,637
 31,982
 15,699
 32,892
 50,312
 42,396
Natural gas transportation and treating 1,468
 977
 2,501
Drilling and production 2,915
 3,817
 340
Midstream service expenses 5,846
 5,429
 3,368
Minimum volume commitments 5,235
 2,552
 891
Costs of purchased oil 174,338
 53,967
 
Drilling rig fees 
 527
 
General and administrative(1)
 62,106
 51,064
 30,908
 90,425
 106,044
 89,696
Restructuring expenses 6,042
 
 
Accretion of asset retirement obligations 1,200
 616
 475
 2,423
 1,787
 1,475
Depreciation, depletion and amortization 243,649
 176,366
 97,411
Depletion, depreciation and amortization 277,724
 246,474
 233,944
Impairment expense 
 243
 
 2,374,888
 3,904
 
Total costs and expenses $416,300
 $308,371
 $169,018
 $3,078,154
 $567,499
 $450,906
      
Average costs per BOE:      
Average costs per BOE sold:(2)
      
Lease operating expenses $5.96
 $5.00
 $4.16
 $6.63
 $8.23
 $7.06
Production and ad valorem taxes 3.33
 3.70
 3.01
 2.01
 4.29
 3.78
Midstream service expenses 0.36
 0.46
 0.30
General and administrative(1)
 5.50
 5.90
 5.93
 5.53
 9.04
 8.00
Depreciation, depletion and amortization 21.56
 20.38
 18.69
Depletion, depreciation and amortization 16.99
 21.01
 20.87
Total $36.35
 $34.98
 $31.79
 $31.52
 $43.03
 $40.01

(1)
General and administrative includes non-cash stock-based compensation, net of $10.1amounts capitalized, of $24.5 million,, $6.1 $23.1 million and $1.3$21.4 million for the years ended December 31, 2012, 20112015, 2014 and 2010,2013, respectively. Excluding stock-based compensation from the above metric results in general and administrative cost
(2)For periods prior to January 1, 2015, we presented our average costs per BOE sold, which combined NGL with the natural gas stream, and did not separately report NGL. This change impacts the comparability of $4.61, $5.19 and $5.69 for the years ended December 31, 2012, 2011 and 2010, respectively.periods presented.
Lease operating expenses. Lease operating expenses, which include workover expenses, increased by $24.0$11.8 million, or 12%, for the year ended December 31, 2015 compared to 2014. On a three-stream per BOE sold comparable basis, lease operating expenses decreased to $6.63 per BOE sold for the year ended December 31, 2015 compared to $6.98 per BOE sold for the year ended December 31, 2014 due to (i) derived efficiencies from wells drilled along our production corridors resulting in reduced service costs from water handling and disposal and utilization of our centralized compression facilities, (ii) our initiative to reduce field electricity costs by working with electric service providers to build infrastructure to our facilities, (iii) reduced fuel costs from natural gas lift and (iv) lower workover expenses.

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Lease operating expenses, which include workover expenses, increased by $17.4 million, or 55%22%, compared to a 31%5% increase in production, for the year ended December 31, 20122014 compared to 2011, respectively. The increases were primarily due to an increase in exploration and development activity, which resulted in additional producing wells during the year ended December 31, 2012 compared to 2011. The increase in well count also led to increases in routine repairs and maintenance.2013. On a per-BOEper BOE sold basis, lease operating expenses increased in total to $5.96$8.23 per BOE atsold as of December 31, 20122014 from $5.00$7.06 per BOE atsold as of December 31, 2011.2013. The majority of the increase isincreases were mainly due to implementation of best practices with respect to workover operations. Those practices will result in longer term well tubing integrity which we expect will improve overall well performance and production in the long term in addition to a decrease in unit(i) higher average lease expenses as a result of reduced well tubing failures.
    Lease operating expenses which include workover expenses, increased by $21.6 million, or 100%, compared to a 66%per BOE sold on our higher oil-weighted Permian production following the Anadarko Basin Sale, (ii) an increase in production,well count and (iii) higher well service and workover expenses.
Production and ad valorem taxes. Production and ad valorem taxes decreased by $17.4 million, or 35%, for the year ended December 31, 20112015 compared to 2010, respectively. The increase was primarily2014. This change is mainly due to an increasea decrease in drilling activity, which resulted in additional producing wells during 2011 compared to 2010. On a per-BOE basis, lease operating expenses increased in total to $5.00 per BOE at December 31, 2011 from $4.16 per BOE at December 31, 2010. The majorityproduction taxes of the increase is due to approximately $3.5$16.9 million in additional workover expenses incurred during 2011 as compared to the same period in 2010 as market conditions for oil and natural gas became more favorable.
Production and ad valorem taxes.    Production and ad valorem taxes increased to approximately $37.6 million for the year ended December 31, 2012 from $32.0 million for the year ended December 31, 2011, an increase of $5.7 million, or approximately 18%. Our ad valorem taxes have increased primarily2015 compared to 2014 as a result of increased valuationsthe corresponding decrease in oil, NGL and natural gas revenues. Production taxes are based on and fluctuate in proportion to our Texas propertiesoil, NGL and an increase in the number of wells included in those valuations as a result of our 2011 and 2012 drilling activity in our Permian and Anadarko Granite Wash areas. The average realized prices excluding derivatives for the year ended December 31, 2012 were $86.89 per Bbl for oil and $4.31 per Mcf fornatural gas as compared to $91.00 per Bbl for oil and $6.30 per Mcf for gas for the year ended December 31, 2011.revenue.

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Production and ad valorem taxes increased to approximately $32.0$50.3 million for the year ended December 31, 20112014 from $15.7$42.4 million for the year ended December 31, 2010,2013, an increase of $16.3$7.9 million, or approximately 104%, primarily due to the increase in market prices (not including the effects of hedging), as well as a significant increase in production for 2011 as compared to the same period in 2010. The average realized prices excluding derivatives for the year ended December 31, 2011 were $91.00 per Bbl for oil and $6.30 per Mcf for gas as compared to $77.00 per Bbl for oil and $5.28 per Mcf for gas for the year ended December 31, 2010.
Drilling and production.    Drilling and production costs19%. Ad valorem taxes decreased to approximately $2.9by $1.6 million for the year ended December 31, 2012 from $3.82014 compared to 2013, primarily as a result of the Anadarko Basin Sale. The ad valorem tax decreases were partially offset by the ad valorem tax expense incurred for new wells drilled during the year ended December 31, 2014.
Midstream service expenses. See "—Results of Operations - midstream and marketing" for a discussion of these costs.
Minimum volume commitments. Minimum volume commitments increased by $2.7 million for the year ended December 31, 20112015 compared to 2014, mainly as a result of the second-quarter 2015 negotiated buyout of a minimum volume commitment to Medallion, which was related to natural gas gathering infrastructure constructed by Medallion on acreage that we do not plan to develop.
Costs of purchased oil. See "—Results of Operations - midstream and marketing" for a discussion of these costs.
General and administrative. The table below shows the changes in the significant components of G&A expense for the periods presented:
(in thousands) Year ended December 31, 2015 compared to 2014 Year ended December 31, 2014 compared to 2013
Changes in G&A:    
Professional fees $(6,066) $6,851
Salaries, benefits and bonuses, net of amounts capitalized (4,084) 6,249
Charitable contributions (3,208) 3,106
Performance unit awards 3,481
 (4,132)
Stock-based compensation, net of amounts capitalized(1)
 1,430
 1,646
Other (7,172) 2,628
Total change in G&A $(15,619) $16,348

(1)On January 1, 2014, we began capitalizing a portion of stock-based compensation for employees who are directly involved in the acquisition and exploration of oil and natural gas properties into the full cost pool. Capitalized stock-based compensation is included as an addition to "Oil and natural gas properties" in the consolidated balance sheets included elsewhere in this Annual Report.
Year ended December 31, 2015 compared to 2014. G&A expense, excluding stock-based compensation, decreased maintenance costs. Drillingby $17.0 million, or 21%, for the year ended December 31, 2015 compared to 2014. The decrease is primarily due to (i) professional fees paid to a consulting company in 2014 that was engaged to assist us with the optimization of our development operations, (ii) reduced personnel expenses as a result of the reduction in force (the "RIF") which occurred early in the first quarter of 2015 and production costs(iii) our $3.0 million charitable contribution pledge expensed in 2014, which will be paid in annual installments through 2024.
Stock-based compensation, net of amount capitalized, increased by $1.4 million, or 6% for the year ended December 31, 2015 compared to approximately $3.82014 due to the varying service periods of our award types, partially offset by forfeitures of restricted stock awards and restricted stock option awards as a result of the first-quarter 2015 RIF.
The fair values for each of our restricted stock awards issued were calculated based on the value of our stock price on the grant date in accordance with GAAP and are being expensed on a straight-line basis over their associated requisite service

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periods. The fair values for each of our non-qualified restricted stock options awards were determined using a Black-Scholes valuation model in accordance with GAAP and are being expensed on a straight-line basis over their associated four-year requisite service periods.
Our performance share awards are accounted for as equity awards and are included in stock-based compensation expense. The fair values of the performance share awards issued were based on a projection of the performance of our stock price relative to a peer group, defined in each performance share awards' agreement, utilizing a forward-looking Monte Carlo simulation. The fair values for each of our performance share awards will not be re-measured after their initial grant-date valuation and are being expensed on a straight-line basis over their associated three-year requisite service periods.
Our performance unit awards were accounted for as liability awards. The associated expense for these awards increased by $3.5 million for the year ended December 31, 2011 from $0.32015 compared to 2014, mainly due to the 2013 performance unit awards fair value at the end of the performance period compared to their quarterly re-measurement value as of December 31, 2014 that was based on the performance of our stock price relative to the peer group utilized in the forward-looking Monte Carlo simulation. The fair value and corresponding liability related to the 2013 performance unit awards as of December 31, 2015 was $6.4 million. The 2013 performance unit awards had a performance period of January 1, 2013 to December 31, 2015 and, as their performance criteria were satisfied, they were paid at $143.75 per unit during the first quarter of 2016. The 2012 performance unit awards had a performance period of January 1, 2012 to December 31, 2014 and, as their performance criteria were satisfied, they were paid at $100 per unit during the first quarter of 2015.
Year ended December 31, 2014 compared to 2013. G&A expense, excluding stock-based compensation, increased to $83.0 million for the year ended December 31, 2010 as a result of increased maintenance costs related to2014 from $68.3 million for the increase in drilling during 2011 as compared to 2010.
General and administrative ("G&A").    G&A expense, excluding stock-based compensation, increased to approximately $52.1 million atyear ended December 31, 2012 from $45.0 million at December 31, 2011,2013, an increase of $7.1$14.7 million,, or 16%22%. IncreaseThe increase is primarily due to approximately $6.4 million in additional salary and benefits due to the growth of our business, and accordingly our professional fees and salaries and benefits have increased $13.1 million for the year ended December 31, 2014 compared to 2013. The increase during the year ended December 31, 2014 was offset by the $6.4 million combined decrease in the fair value of our performance unit awards and increase in production income and reduced employee base. Additionally,bonuses. Professional fees increased mainly due to fees paid to a consulting company engaged in 2014 to assist us with the optimization of our development operations. We also pledged a $3.0 million charitable contribution during the year ended December 31, 2014, which will be paid in annual payments through 2024. On a per BOE sold basis, G&A expense, excluding stock-based compensation, increased to $7.07 per BOE sold during the year ended December 31, 2014 from $6.09 per BOE sold during the year ended December 31, 2013. This increase was a result of the growth in our overhead combined with our Permian production growth being partially offset by the production associated with the divestiture of our Anadarko Basin assets.
Stock-based compensation increased to $27.7 million for the year ended December 31, 2014 from $21.4 million for the year ended December 31, 2013, an increase of $6.3 million, mainly due to the issuance of our cash-settled1,234,255 restricted stock awards at a weighted-average grant price of $25.68 per share and 336,140 non-qualified restricted stock options to new and existing employees and non-employee directors in the year ended December 31, 2014 compared to the issuance of 1,469,295 restricted stock awards at a weighted-average grant price of $18.17 per share and 1,018,849 non-qualified restricted stock options to new and existing employees and non-employee directors in 2013. Additionally, during the year ended December 31, 2014, we issued 271,667 performance unit liabilityshare awards in February 2012, which are revalued atto management and the end of each reporting period using a Monte Carlo simulation, accounted for approximately $1.8 million of the total increase. These increases were partially offset by a decrease in legal and professional fees of approximatelyassociated expense amounted to $2.1 million for the year ended December 31, 2012, as we incurred higher fees2014. No comparable awards were issued during 2013. This increase in 2011 relatedstock-based compensation was partially offset by management's decision to begin capitalizing a portion of stock-based compensation for employees who are directly involved in the issuanceacquisition and exploration of our 2019 senior unsecured notesoil and natural gas properties into the full cost pool in January 2011 and October 2011, the acquisition of Broad Oak in July 2011 and our IPO in December 2011. The remaining change is made up of smaller increases in a number of areas such as vehicle expenses, insurance expenses and computer and software costs that are largely a result of increasing our workforce and growing our business. On a per-BOE basis, G&A expense, excluding2014. Capitalized stock-based compensation decreasedamounted to $4.61 per BOE during the year ended December 31, 2012 from $5.19 per BOE at December 31, 2011. This decrease was a result of a significant increase in production during the year ended December 31, 2012 as compared to the year ended December 31, 2011.
G&A expense, excluding stock-based compensation, increased to approximately $45.0$4.7 million at December 31, 2011 from $29.7 million at December 31, 2010, an increase of $15.3 million, or 52%. Increases in professional fees incurred relating to the issuance of our 2019 senior unsecured notes, the Broad Oak acquisition, the filing of a registration statement relating to our 2019 senior unsecured notes with the SEC and other matters accounted for approximately $7.4 million, or 48%, of the change in G&A, as well as approximately $7.2 million in additional salary, benefits and bonus expenditures due to the Broad Oak acquisition and the growth of our business and employee base. On a per-BOE basis, G&A expense, excluding stock-based compensation, decreased to $5.19 per BOE during the year ended December 31, 2011 from $5.69 per BOE at December 31, 2010. This decrease was a result of a significant increase in production during the year ended December 31, 2011 as compared to the year ended December 31, 2010. Additionally, on a per-BOE basis, excluding the costs of the Broad Oak acquisition G&A expense was approximately $4.22 per BOE for the year ended December 31, 2011.2014. No amounts were capitalized during 2013.
Stock-based compensation.    Stock-based compensation increased to approximately $10.1The associated expense for our 2013 and 2012 performance unit awards awards decreased by $4.1 million at for the year ended December 31, 2012 from $6.1 million at December 31, 2011, an increase2014 compared to 2013 due to (i) the quarterly re-measurement of approximately $3.9 million due largelythe 2013 performance unit awards based on the performance of our stock price relative to the issuance of 932,084 restricted stock awards and 602,948 non-qualified restricted stock options during 2012.
Stock-based compensation increased to approximately $6.1 million at December 31, 2011 from $1.3 million at December 31, 2010, an increase of approximately $4.8 million. Approximately $4.1 million of this increase was attributed largely to new series of units issued in conjunction with the Broad Oak acquisitionpeer group utilized in the third quarterforward-looking Monte Carlo simulation and (ii) the final pay-out value of 2011. On December 19, 2011, as a resultthe 2012 performance unit awards due to the performance of our Corporate Reorganization,stock relative to the outstanding units in Laredo Petroleum, LLC that had been previously issued to management, directors and employees were exchanged for 2,500,807 vested and 912,038 unvested shares of common stock in Laredo Petroleum Holdings, Inc.peer group during the corresponding performance period. The fair value ofand corresponding liability related to the 2012 performance unit awards immediately prior toas of December 31, 2014 was $2.7 million and represents the exchange was determined to be equal to the fair value of the common shares immediately after the exchange and as such, the basiscash payment made in the former unvested units was carried overfirst quarter of 2015.
See Notes 2.r and 6 to the unvested shares of common stock. This resulted in no additional incremental compensation cost being recognized at the date of conversion.
We have a 2011 Omnibus Equity Incentive Plan, which allows for the issuance of restricted stock awards, restricted stock option awards and performance units to current and prospective directors, officers, employees, consultants and advisors. In February 2013, we issued 1,099,256 restricted stock awards, 1,018,849 stock options and 58,291 performance units to employees and officers and will record compensation expense related to these issuances in accordance with generally accepted accounting principles in the United States of America ("GAAP") in future periods. See Note N to our audited consolidated financial statements included elsewhere in thethis Annual Report on Form 10-K for additional information.information regarding our stock and performance based compensation.
Restructuring expenses.Restructuring expenses relate to the first-quarter 2015 RIF which was an effort to reduce costs and better position ourselves for ongoing efficient growth. Restructuring expenses of $6.0 million were incurred in the first quarter of 2015. See Note 13 to our consolidated financial statements included elsewhere in this Annual Report for further discussion of the RIF.

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Depreciation, depletionDepletion, depreciation and amortization ("DD&A"). DD&A increased to approximately $243.6 million at December 31, 2012 from $176.4 million at December 31, 2011 and $97.4 million at December 31, 2010.
The following table provides components of our DD&A expense from continuing operations for the years periods presented:
 
 
 For the years ended December 31,
(in thousands except for per BOE data) 2012 2011 2010
Depletion of proved oil and natural gas properties $237,130
 $171,517
 $93,815
Depreciation of pipeline assets 3,191
 2,466
 1,982
Depreciation of other property and equipment 3,328
 2,383
 1,614
    DD&A $243,649
 $176,366
 $97,411
       
DD&A per BOE $21.56
 $20.38
 $18.69
 
 
 For the years ended December 31,
(in thousands except for per BOE sold data) 2015 2014 2013
Depletion of evaluated oil and natural gas properties $263,666
 $237,067
 $227,992
Depreciation of midstream service assets 7,529
 4,303
 1,510
Depreciation and amortization of other fixed assets 6,529
 5,104
 4,442
Total DD&A $277,724
 $246,474
 $233,944
DD&A per BOE sold $16.99

$21.01

$20.87
The increases in depletion of proved oil and natural gas properties of $65.6DD&A increased by $31.3 million, and $1.16 per BOEor 13%, for the year ended December 31, 20122015 as compared to 2011,2014, mainly due to (i) the reduction in our reserves volume, (ii) the impact of $152.5 million in unevaluated properties' carrying costs being added to the depletion base during the year ended December 31, 2015 and increases(iii) higher total production levels. These contributors were partially offset by our second-quarter and third-quarter 2015 impairments. We expect DD&A per BOE will decrease in the first quarter of $77.72016 due to our fourth-quarter 2015 impairment.
DD&A increased by $12.5 million, and $1.82 per BOEor 5%, for the year ended December 31, 20112014 as compared to 2010 resulted primarily from2013. The increase is mainly due to (i) decreases in the natural gas price between periods utilized to determine proved reserves, (ii) increased net book value on new reserves added, (iii)(ii) higher total production levels, and (iv)(iii) increased capitalized costs for new wells completed in 2012. We expectthe year ended December 31, 2014, (iv) the impact of the Anadarko Basin Sale to the year ended December 31, 2013 depletion and (v) the impact of proved$35.5 million in unevaluated properties' carrying costs being added to the depletion base during the three months ended December 31, 2014, as management determined that we do not intend to drill this non-core acreage.
Impairment expense. Our net book value of evaluated oil and natural gas properties to continue to increaseexceeded the full cost ceiling amount as our focus remains on drilling higher-valued oil-rich assets.
Impairment expense. We incurred impairment expense of approximately $0.2 millionJune 30, 2015, September 30, 2015 and December 31, 2015. As a result, we recorded non-cash full cost ceiling impairments for the year ended December 31, 2011 to reflect our materialssecond quarter, third quarter and supplies inventory at the lowerfourth quarter of 2015 of $488.0 million, $906.4 million and $975.0 million, respectively. There were no comparable full cost impairments in 2014 or market value calculated as of December 31, 2011. It was determined for2013. During the years ended December 31, 20122015 and 2010, that a lower of cost or market adjustment was not needed for2014, we reduced materials and supplies.
We evaluatesupplies by $2.8 million and $1.8 million, respectively, in order to reflect the impairmentbalance at LCM. There were no comparable materials and supplies impairments in 2013. Beginning in the fourth quarter of our2014, we owned oil and natural gas properties on a quarterly basis according to the full cost method prescribed by the SEC. If the carrying amount exceeds the calculated full cost ceiling, we reduce the carrying amount of the oil and natural gas properties to the calculated full cost ceiling amount,line-fill in third-party pipelines, which is determined to be their estimated fair value.accounted for at LCM. For the years ended December 31, 2012, 20112015 and 2010, it was determined that2014, we recorded LCM adjustments of $1.3 million and $2.1 million, respectively, related to our oil and natural gas properties were not impaired.line-fill.
Non-operating income and expense. The following table sets forth the components of non-operating income and expense from continuing operations for the periods presented:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Non-operating income (expense):            
Realized and unrealized gain (loss):      
Commodity derivative financial instruments, net $8,800
 $21,047
 $11,190
Gain (loss) on derivatives:      
Commodity derivatives, net $214,291
 $327,920
 $79,902
Interest rate derivatives, net (412) (1,311) (5,375) 
 
 (24)
Income (loss) from equity method investee 6,799
 (192) 29
Interest expense (85,572) (50,580) (18,482) (103,219) (121,173) (100,327)
Interest and other income 59
 108
 151
 426
 294
 163
Write-off of deferred loan costs 
 (6,195) 
Loss on disposal of assets (52) (40) (30)
Non-operating expense, net $(77,177) $(36,971) $(12,546)
Loss on early redemption of debt (31,537) 
 
Write-off of debt issuance costs 
 (124) (1,502)
Loss on disposal of assets, net (2,127) (3,252) (1,508)
Non-operating income (expense), net $84,633
 $203,473
 $(23,267)

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Commodity derivative financial instruments.derivatives, net. The realized and unrealized gains and lossestable below shows the changes in the components of gain on commodity derivative financial instrumentsderivatives, net for the periods presented:
  For the years ended December 31,
(in thousands) 2012 2011 2010
Realized gains, net $27,025
 $3,719
 $22,701
Unrealized gains (losses) (18,225) 17,328
 (11,511)
Total commodity derivative gain, net $8,800
 $21,047
 $11,190
(in thousands) Year ended December 31, 2015 compared to 2014 Year ended December 31, 2014 compared to 2013
Changes in gain on commodity derivatives, net:    
Fair value of commodity derivatives outstanding $(264,009) $153,171
Early terminations and modification of commodity derivatives received (76,660) 70,652
Cash settlements received for matured commodity derivatives 227,040
 24,195
Total change in gain on commodity derivatives, net $(113,629) $248,018

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Realized gains onThe year ended December 31, 2015 compared to 2014 decrease in fair value of commodity derivative financial instruments increased by approximately $23.3 million forderivatives outstanding is the result of some of our contracts expiring and the changing relationship between our outstanding contract prices and the associated forward curves used to calculate the fair value of our derivatives in relation to expected market prices. During the year ended December 31, 2012 compared to 20112014, we received $76.7 million in net proceeds from the early termination of our oil basis swap differential between the Light Louisiana Sweet Argus and decreased by $19.0 millionthe Brent International Petroleum Exchange index oil prices and the related physical contract. There were no comparable early termination amounts in 2015. Net cash settlements received for the year ended December 31, 2011 compared to 2010,matured derivatives are based on the cash settlement prices of our commodity derivative contractsmatured derivatives compared to the prices specified in thosethe derivative contracts.

The unrealized gains on commodity derivative financial instruments experienced during the year ended December 31, 2011 converted2014 compared to unrealized losses for2013 increase in fair value of commodity derivatives outstanding is the year ended December 31, 2012 as a result of the changing relationshipsrelationship between our contract prices and the associated forward curves used to calculate the fair value of our commodity derivative financial instrumentsderivatives in relation to expected market prices. In general, we experience unrealized gains during periods of decreasing market prices and unrealized losses during periods of increasing market prices. Additionally, at December 31, 2012, we had 27 commodity derivatives contracts with associated deferred premiums totaling approximately $25.5 million. The estimated fair value of our total deferred premiums was approximately $24.7 million at December 31, 2012 compared to $18.9 million at December 31, 2011 and $12.5 million at December 31, 2010. The fair market value of these premiums is netted against the fair market value of the underlying commodity derivative financial instruments at each period end and contributed the majority of our overall unrealized loss positions forDuring the year ended December 31, 2012.

2014, we received $76.7 million in net proceeds from the early termination of our oil basis swap differential between the Light Louisiana Sweet Argus and the Brent International Petroleum Exchange index oil prices and the related physical contract. During the year ended December 31, 2013, we received net cash settlements on early terminations and modifications of derivatives of $6.0 million as a result of unwinding nine natural gas commodity contracts in connection with the Anadarko Basin Sale.
See Notes B.5, F2.f, 8 and G9 to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K and “Item"Item 7A. Quantitative and Qualitative Disclosures About Market Risk”Risk" for additional information regarding our commodity derivative financial instruments.derivatives.
Interest expense and realized and unrealized gains and losses on interest rate swaps. Income (loss) from equity method investeeInterest expense. Income (loss) from equity method investee increased by approximately $35.0$7.0 million, or 69%, for the year ended December 31, 20122015 compared to 2011,2014, and $32.1decreased by $0.2 million or 174%, for the year ended December 31, 20112014 compared to 2010. These increases are largely2013. During the year ended December 31, 2015, Medallion, our equity method investee, continued expansion activities on existing portions of its pipeline infrastructure in order to gather additional third-party oil production and began recognizing revenue due to the issuance of (i) $200.0 million in 9 1/2% senior unsecured notes due 2019 in October of 2011 in addition to the previously outstanding $350.0 million 9 1/2% senior unsecured notes due in 2019,its main pipeline becoming fully operational.
Interest expense and (ii) $500.0 million in 7 3/8% senior unsecured notes due 2022 in April of 2012.interest rate swaps.
The table below shows the changes in the significant components of interest expense for the periods presented:
(in thousands) Year ended December 31, 2012 compared to 2011 Year ended December 31, 2011 compared to 2010
Changes in interest expense:    
   Senior secured credit facility, net of capitalized interest $(3,497) $940
   2019 senior unsecured notes 16,661
 35,388
   2022 senior unsecured notes 24,686
 
   Term loan(1)
 
 (4,574)
   Broad Oak credit facility(2)
 (4,928) (1,642)
   Amortization of debt issuance costs 1,327
 1,505
   Other 743
 481
        Total change in interest expense $34,992
 $32,098
(in thousands) Year ended December 31, 2015 compared to 2014 Year ended December 31, 2014 compared to 2013
Changes in interest expense:    
January 2019 Notes $(38,002) $(162)
March 2023 Notes 17,135
 
Senior Secured Credit Facility, net of capitalized interest(1)
 1,969
 (2,587)
January 2022 Notes 1,477
 23,836
Other (533) (241)
Total change in interest expense $(17,954) $20,846

(1)The term loan was entered into on July 7, 2010 andOur Senior Secured Credit Facility was paid in full on August 1, 2013 and terminated on January 20, 2011.
(2)The Broad Oak credit facility was paid-in-full and terminated on July 1, 2011 in connection with the Broad Oak acquisition.remained undrawn until September 3, 2014.
Interest expense decreased by $18.0 million, or 15%, for the year ended December 31, 2015 compared to 2014. The decrease is primarily due to the early redemption of the January 2019 Notes on April 6, 2015, which is partially offset by the

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issuance of the March 2023 Notes. The March 2023 Notes, which began accruing interest on March 18, 2015, have both a lower interest rate and a lower principal amount than the January 2019 Notes.
Interest expense increased by $20.8 million, or 21%, for the year ended December 31, 2014 compared to 2013. The increase is primarily due to the issuance of the January 2022 Notes in January 2014, which was partially offset by the reduction in the amount outstanding under our Senior Secured Credit Facility and the related commitment fees on the unused portion of the banks' commitment on our Senior Secured Credit Facility.
We havehad entered into certain variable-to-fixed interest rate derivatives that hedgehedged our exposure to interest rate variations on our variable interest rate debt. Atdebt that expired in September 2013. During the year ended December 31, 2012,2013 we had one interest rate swap and one interest rate cap outstanding for a total notional amount of $100.0 million with fixed pay rates ranging from 1.11% to 3.00% and terms expiring through September 2013. At December 31, 2011, we had interest rate swaps and one interest rate cap outstanding for a notional amount of $260.0 million with fixed pay rates ranging from 1.11% to 3.41% and terms expiring throughuntil their expiration in September 2013.
Loss on early redemption of debt. During the year ended December 31, 2015, we redeemed the entire $550.0 million outstanding principal amount of the January 2019 Notes at a redemption price of 104.750% of the principal amount, plus accrued and unpaid interest up to the Redemption Date. We recognized a loss on extinguishment of $31.5 million related to the difference between the redemption price and the net carrying amount of the January 2019 Notes. There were no comparable early redemption of debt amounts in 2014 and 2013.
Write-off of debt issuance costs. In January 2014, we wrote-off $0.1 million of debt issuance costs as a result of changes in the borrowing base under our Senior Secured Credit Facility due to the issuance of the January 2022 Notes. In August 2013, we wrote-off $1.5 million in debt issuance costs as a result of changes in the borrowing base under our Senior Secured Credit Facility due to the Anadarko Basin Sale. There was no comparable amount in 2015.
Loss on disposal of assets, net. Loss on disposal of assets, net decreased by $1.1 million for the year ended December 31, 2015 compared to 2014 as a result of lower losses related to the sales and write-off of materials and supplies and other fixed assets during 2015 as compared to 2014.
Loss on disposal of assets, net increased by $1.7 million for the year ended December 31, 2014 compared to 2013. The 2014 increase over the prior year is a result of losses related to sales of materials and supplies, vehicles and a write-off of abandoned internally developed software during 2014, compared to a net gain recorded in 2013 mainly related to the sale of pipeline assets and various other property and equipment associated with the Anadarko Basin Sale.
Income tax benefit (expense). The fluctuations in income (loss) from continuing operations before income taxes is shown in the table below:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Income (loss) from continuing operations before income taxes $(2,386,881) $429,859
 $191,084
Income tax benefit (expense) 176,945
 (164,286) (74,507)
Income (loss) from continuing operations $(2,209,936) $265,573
 $116,577
Our effective tax rate is affected by recurring changes in valuation allowances, recurring permanent differences and discrete items that may occur in any given year but are not consistent from year to year. The effective tax rate on income (loss) before income taxes was 7%, 38% and 39% for the years ended December 31, 2015, 2014 and 2013, respectively. For the year ended December 31, 2015, we recorded a valuation allowance of $676.0 million for our deferred tax assets due to uncertainty regarding their realization. For further discussion of our valuation allowance, see Note 7 to our consolidated financial statements located elsewhere in this Annual Report.
During the years ended December 31, 2015, 2014 and 2013, certain shares related to restricted stock awards vested at times when our stock price was lower than the fair value of those shares on the grant date. As a result, the income tax deduction related to such shares is less than the expense previously recognized for book purposes. During the years ended December 31, 2014 and 2013, certain restricted stock options were exercised, for which the related income tax deduction was less than the expense previously recognized for book purposes. There were no stock options exercised during the year ended December 31, 2015. As a result of these differences in book compensation cost and related tax deduction, the tax impact of these shortfalls increased by $3.1 million for the year ended December 31, 2015 compared to 2014, and decreased by $0.3 million for the year ended December 31, 2014 compared to 2013.
We utilize a one-pool approach when accounting for the pool of windfall tax benefits in which employees and non-employees are grouped into a single pool. As of December 31, 2015, 2014 and 2013, we did not have any eligible windfall tax benefits to offset future shortfalls as no excess tax benefits had been recognized, and therefore the tax impact of these shortfalls

5970



is included in income tax expense for these respective periods. We expect income tax provisions for future reporting periods will be impacted by this stock compensation tax deduction shortfall; however, we cannot predict the stock compensation shortfall impact because of dependency upon the future market price of our stock. See Notes 6.a, 6.b and 7 to our consolidated financial statements included elsewhere in this Annual Report for additional information.
Income from discontinued operations, net of tax. The table below shows our income from discontinued operations, net of tax for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Income from discontinued operations, net of tax $
 $
 $1,423
Effective on the August 1, 2013 completion of the Anadarko Basin Sale, the operations and cash flows of these properties were eliminated from our ongoing operations and we do not have continuing involvement in the operations of these properties.

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Results of operations - midstream and marketing
The following table below showspresents selected financial information regarding our realizedmidstream and unrealized losses related to interest rate swapsmarketing operating segment on a stand-alone basis for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Natural gas sales $1,692
 $1,660
 $
Midstream service revenues 27,965
 7,838
 8,824
Sales of purchased oil 168,358
 54,437
 
Total revenues 198,015
 63,935
 8,824
Midstream service expenses, including minimum volume commitments 18,393
 9,641
 1,571
Costs of purchased oil 174,338
 53,967
 
General and administrative(1)
 8,174
 6,969
 2,745
Depletion, depreciation and amortization(2)
 8,093
 4,640
 2,241
Impairment expense 2,592
 2,102
 
Other operating costs and expenses(3)
 342
 66
 
Operating income (loss) $(13,917) $(13,450) $2,267
Other financial information:      
Income (loss) from equity method investee $6,799
 $(192) $29
Interest expense(4)
 $(5,179) $(3,613) $(1,647)
Loss on early redemption of debt(5)
 $(1,481) $
 $
Income tax benefit (expense)(6)
 $4,993
 $6,265
 $(1,031)

(1)G&A was allocated based on the number of employees in the midstream and marketing segment for the years ended December 31, 2015, 2014 and 2013. Certain components of G&A were not allocated and were based on actual costs to the midstream and marketing segment which primarily consisted of payroll, deferred compensation and vehicle costs for the years ended December 31, 2015 and 2014 and payroll and deferred compensation for the year ended December 31, 2013. Costs associated with land and geology were not allocated to the midstream and marketing segment for the years ended December 31, 2015, 2014 and 2013.
(2)DD&A was based on actual costs for the midstream and marketing segment with the exception of the allocation of other fixed asset depreciation, which was based on the number of employees in the midstream and marketing segment for the years ended December 31, 2015, 2014 and 2013.
(3)Other operating costs and expenses include restructuring expense and accretion of asset retirement obligations for the year ended December 31, 2015 and accretion of asset retirement obligations for the years ended December 31, 2014 and 2013. These expenses are based on actual costs to the midstream and marketing segment and are not allocated.
(4)Interest expense was allocated to the midstream and marketing segment based on gross property and equipment and life-to-date contributions to the Company's equity method investee for the years ended December 31, 2015, 2014 and 2013.
(5)Loss on early redemption of debt was allocated to the midstream and marketing segment based on gross property and equipment and life-to-date contributions to the Company's equity method investee for the year ended December 31, 2015.
(6)Income tax benefit or expense for the midstream and marketing segment was calculated by multiplying income (loss) from continuing operations before income taxes by 36% for the years ended December 31, 2015, 2014 and 2013.
  For the years ended December 31,
(in thousands) 2012 2011 2010
Realized losses, net $(2,115) $(4,873) $(5,238)
Unrealized gains (losses) 1,703
 3,562
 (137)
    Total losses, net $(412) $(1,311) $(5,375)
For additional information, see "—Costs and expenses."
Write-offNatural gas sales. These revenues are related to our midstream and marketing segment providing our exploration and production segment with processed natural gas for use in the field. The corresponding cost component of deferred loan costs.these transactions are included in "Midstream service expenses." See Note 17 to our consolidated financial statements included elsewhere in this Annual Report for additional information on the operating segments.
Midstream service revenues    In January 2011, we used a portion of the net proceeds. Our midstream service revenues from the issuance of our senior unsecured notes to pay in full and retire our term loan. Additionally, concurrent with the issuance of our senior unsecured notes, the borrowing base on our senior secured credit facility was lowered from $220.0operations increased by $20.1 million to $200.0 million. As a result, we took a charge to expense for the debt issuance costs attributableyear ended December 31, 2015 compared to 2014. This increase is mainly due to (i) water service revenue that we began

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recognizing in the third quarter of 2015, (ii) oil throughput fees generated by our term loanoil gathering line which was not operational until July of 2014, (iii) higher volumes of gathered natural gas and a proportionate percentage(iv) natural gas lift fees generated in our production corridors that were not operational until September of 2014. Our midstream service revenues from operations decreased by $1.0 million during the costs incurred for our senior secured credit facility, which totaled $2.9year ended December 31, 2014 compared to 2013. This decrease is mainly due to changes in the gathering fee structure.
Sales of purchased oil. Sales of purchased oil was $168.4 million and $0.3 million, respectively. As of December 31, 2012, the borrowing base on our senior secured credit facility is $825.0 million. On July 1, 2011, in conjunction with the Broad Oak acquisition, the Broad Oak credit facility was paid in full and terminated and the related debt issuance costs of $2.9 million were charged to expense.
Income tax expense. We recorded a deferred income tax expense of $32.9 million, a deferred income tax expense of $59.4 million and a deferred income tax benefit of $25.8$54.4 million for the years ended December 31, 2012, 20112015 and 2010, respectively, due2014, respectively. During the fourth quarter of 2014, we began purchasing oil in West Texas, transporting the product on the Bridgetex Pipeline and selling the product to fluctuations in income before income taxes as showna third party in the table below.Houston market.
  For the years ended December 31,
(in thousands) 2012 2011 2010
Income before income taxes $94,603
 $164,928
 $60,436
Income tax (expense) benefit (32,949) (59,374) 25,812
   Net income $61,654
 $105,554
 $86,248
Effective tax rate 35% 36% (43)%
During the first nine months of 2010, Broad Oak had a valuation allowance against its net deferred federal tax asset which decreased our deferred income tax expenseMidstream service expenses, including minimum volume commitments. Midstream service expenses, including minimum volume commitments, increased by $8.8 million for the year ended December 31, 2010. Our effective tax rate2015 compared to 2014 and increased by $8.1 million for the year ended December 31, 2014 compared to 2013. Midstream service expenses primarily represent costs incurred to operate and maintain our (i) oil and natural gas gathering and transportation systems and related facilities, (ii) centralized oil storage tanks, (iii) natural gas lift, rig fuel and centralized compression infrastructure and (iv) water storage, recycling and transportation facilities. The increases are due to continued expansion of the midstream service component of our business. Minimum volume commitments increased by $2.7 million for the year ended December 31, 2015 compared to 2014, mainly as a result of the second-quarter 2015 negotiated buyout of a minimum volume commitment with Medallion, which was related to natural gas gathering infrastructure constructed by Medallion on acreage that we do not plan to develop.
Costs of purchased oil. Costs of purchased oil was $174.3 million and $54.0 million for the years ended December 31, 2015 and 2014, respectively. These costs include purchasing oil from producers and transporting the purchased oil on the Bridgetex Pipeline to the Houston market.
Income (loss) from equity method investee. We own 49% of the ownership units of Medallion. As such, weaccount for this investment under the equity method of accounting with our proportionate share of net income (loss) reflected in the consolidated statements of operations as "Income (loss) from equity method investee" and the carrying amount reflected in the consolidated balance sheets as "Investment in equity method investee." During the year ended December 31, 2015, Medallion began recognizing revenue due to its main pipeline becoming fully operational. See Note 15 to our consolidated financial statements included elsewhere in this Annual Report for additional information regarding this investment.
Interest expense. Interest expense increased by $1.6 million for the year ended December 31, 2015 compared to 2014 and increased by $2.0 million for the year ended December 31, 2014 compared to 2013. Interest is allocated to the midstream and marketing segment based on its gross property and equipment and life-to-date contributions to its equity method investee. We have expanded the midstream and marketing component of our estimated annual permanent tax differencesbusiness and estimated annual pre-tax book income. Our estimates involve assumptions we believebuilt out our service facilities significantly in the past year, thereby increasing the interest expense that is allocated to be reasonable atthis segment.
Loss on early redemption of debt. We recognized a loss on extinguishment related to the timedifference between the redemption price and the net carrying amount of the estimation.extinguished January 2019 Notes during the year ended December 31, 2015. The portion of loss on early redemption of debt is allocated to the midstream and marketing segment based on its gross property and equipment and life-to-date contributions to its equity method investee.
Liquidity and capital resources
Since our IPO, ourOur primary sources of liquidity have been cash flows from operations, proceeds from equity offerings, proceeds from senior unsecured note offerings, borrowings under our senior secured credit facility,Senior Secured Credit Facility and proceeds from our senior unsecured notes offerings, proceeds from our IPO andasset dispositions. In 2016, we believe cash flows from operations. As we pursue reservesoperations and production growth, weavailability under our Senior Secured Credit Facility provide sufficient liquidity to manage our cash needs and contractual obligations and to fund expected capital expenditures. A significant portion of our capital expenditures can be adjusted and managed by us. We continually monitor and consider which financing alternatives, including debt and equity capital resources, including equityjoint ventures and debt financings,asset sales, are available to meet our future financial obligations, planned or accelerated capital expenditure activities and liquidity requirements.expenditures. Our future ability to grow proved reserves and production will be highly dependent onprimary operational uses of capital have been for the capital resources available to us. We believe that we have sufficient liquidity available to us from cash flow from operations and on our senior secured credit facility for our plannedacquisition, exploration and development activities. In addition,of oil and natural gas properties, LMS's infrastructure development and investments in Medallion, our hedge positions currently provide relative certainty onequity method investee.
We continually seek to maintain a majority of our cash flows from operations through 2015 even withfinancial profile that provides operational flexibility. However, as evidenced by the general decline in our Realized Prices used in our 2015 reserve report compared to 2014, the decrease in oil, NGL and natural gas prices may have a negative impact on our ability to raise additional capital and/or maintain our desired levels of natural gas.
Atliquidity. As of December 31, 2012,2015, we had $165.0 million in debt outstanding under our senior secured credit facility and $1.1 billion in senior unsecured notes, excluding the premium of $2.0 million received on the October 2011 offering of our 2019 senior unsecured notes. Additionally, we had approximately $660.0$865.0 million available for borrowings under our senior secured credit facility atSenior Secured Credit Facility and total outstanding debt of $1.4 billion, of which $135.0 million was outstanding under our Senior Secured Credit Facility. Our total outstanding debt, less available cash on the balance sheet, was 3.0 times our Adjusted EBITDA (a non-GAAP financial

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measure, see "Item 6. Selected Historical Financial Data—Non-GAAP financial measure") for the year ended December 31, 2012.2015. We believe such availability as well asthat our operating cash flows from operationsflow and cash on handthe aforementioned liquidity sources provide us with the abilityfinancial resources to implement our planned exploration and development activities.
We use derivatives to reduce exposure to fluctuations in the prices of oil and natural gas. As of March 8, 2013February 16, 2016, approximately 85% to 90% of our anticipated oil production for 2016 is hedged at a weighted-average floor price of $70.84 per Bbl and approximately 70% to 75% of our anticipated natural gas production for 2016 is hedged at a weighted-average floor price of $3.00 per MMBtu.
As of December 31, 2015, we had $300.0$135.0 million outstanding under our Senior Secured Credit Facility and $1.3 billion in debt outstanding and $525.0Senior Unsecured Notes. We had $865.0 million available for borrowings under our senior secured credit facility.Senior Secured Credit Facility and $31.2 million in cash on hand for total available liquidity of $896.2 million as of December 31, 2015.
We expect,Subsequent to December 31, 2015, we borrowed an additional $35.0 million on our Senior Secured Credit Facility. As of February 16, 2016, we had $1.5 billion in debt outstanding, $830.0 million available for borrowings under our Senior Secured Credit Facility and $16.8 million in cash on hand for total available liquidity of $846.8 million. A continued decline in oil and natural gas prices will negatively impact our future borrowing base redeterminations.
The following table summarizes our hedge positions as of December 31, 2015, adjusted for any new hedge transactions entered into between January 1, 2016 and February 16, 2016, for the calender years presented:
  
Year
2016
 
Year
2017(1)
 
Year
2018
(1)
Oil positions:(2)
  
    
Total volume hedged with floor price (Bbl) 6,523,800
 2,628,000
 
Weighted-average floor price ($/Bbl) $70.84
 $77.22
 $
Natural gas positions:(3)
  
  
  
Total volume hedged with floor price (MMBtu) 18,666,000
 13,515,000
 8,220,000
Weighted-average floor price ($/MMBtu) $3.00
 $2.70
 $2.50

(1)Includes derivatives entered into subsequent to December 31, 2015.
(2)Oil derivatives are settled based on the WTI NYMEX index oil prices.
(3)Natural gas derivatives are settled based on the Inside FERC index price for West Texas Waha ("Waha") for the calculation period.
The following table presents a projection of estimated cash received in future periods from oil and natural gas derivative contracts in place as of December 31, 2015, adjusted for any new hedge transactions entered into between January 1, 2016 and February 16, 2016, utilizing the total volumes hedged with a floor price and the weighted-average floor price for the periods presented:
(in thousands) Year
2016
 Year
2017
 Year
2018
Projected oil and natural gas hedge cash proceeds(1)
 $265,043
 $120,965
 $1,753

(1)For this illustration we utilized the January 2016 WTI index oil price of $31.78 held constant for all periods presented. For this illustration we utilized the January 2016 Waha natural gas price of $1.99 held constant for all periods presented. Additionally, we reduced our projected oil and natural gas hedge cash proceeds by the actual cash payments required for deferred premiums for the calendar years presented.
Our commodity derivative positions will help us stabilize a portion of our expected cash flows from operations despite possiblein the event of further declines in the price of oil and natural gas. Please seeSee "Item 7A. Quantitative and Qualitative Disclosures About Market Risk" below.

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Cash flows
Our cash flows from continued and discontinued operations for the periods presented are as follows:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Net cash provided by operating activities $376,776

$344,076

$157,043
 $315,947
 $498,277
 $364,729
Net cash used in investing activities (940,751)
(706,787)
(460,547) (667,507) (1,406,961) (329,884)
Net cash provided by financing activities 569,197

359,478

319,752
 353,393
 739,852
 130,084
Net increase (decrease) in cash $5,222
 $(3,233) $16,248
Net increase (decrease) in cash and cash equivalents $1,833
 $(168,832) $164,929
For the year ended December 31, 2013, the results of operations of the pipeline assets and various other related property and equipment sold as a component of the Anadarko Basin Sale have been presented as results of discontinued operations, net of tax. We do not disclose cash flows of discontinued operations separately from cash flows of continued operations due to the immateriality of the cash flows from discontinued operations. The absence of these discontinued operations will not materially affect future liquidity or capital resources.
Cash flows provided by operating activities
Net cash provided by operating activities was $376.8$315.9 million,, $344.1 $498.3 million and $157.0$364.7 million for the years ended December 31, 2012, 20112015, 2014 and 2010,2013, respectively. The increasesdecrease of $32.7$182.3 million from 20112014 to 20122015 is mainly due to the price related decrease in oil, NGL and $187.0natural gas revenue, however notable cash flow changes consist of (i) impairment expense of $2.4 billion mainly due to our full cost ceiling impairments throughout 2015, (ii) a net increase of $150.4 million of proceeds from derivative settlements due to maturity or early termination, (iii) an increase of $31.5 million related to our loss on the early redemption of our January 2019 Notes and (iv) $56.6 million in decreased changes in working capital.
    The increase of $133.5 million from 20102013 to 2011 were2014 was largely due to significant increases in revenue due to production growth driven by our successful drilling program, as well as an increase of $70.7 million net proceeds received for early terminations and modifications of commodity derivative contracts, a net increase of $26.4 million in the market priceworking capital, a change in fair value of performance unit awards and a change in other noncurrent liabilities and an increase of $24.5 million in cash settlements received for oilmatured derivatives and an increase of $11.9 million in 2011 as compared to 2010.DD&A.
Our operating cash flows are sensitive to a number of variables, the most significant of which are production levels and the variabilityvolatilities of oil, NGL and natural gas prices.prices and production levels. Regional and worldwide economic activity, weather, infrastructure, capacity to reach markets, costs of operations and other variable factors significantly impact the prices of these commodities. These factors are not within our control and are difficult to predict. For additional information on the impact of changing prices on our financial position, see "Item 7A. Quantitative and Qualitative Disclosures About Market Risk."
Cash flows used in investing activities
We hadNet cash used in investing activities decreased $739.5 million from 2014 to 2015 and is mainly attributable to decreased capital expenditures due to our decreased capital budget and $64.8 million in proceeds from our sale of non-strategic and primarily non-operated properties, partially offset by increased contributions to our equity method investee, Medallion. Medallion significantly expanded their pipeline network during 2015. See Note 4 to our consolidated financial statements included elsewhere in this Annual Report for additional information regarding our divestiture of non-strategic and primarily non-operated properties and Note 15 to our consolidated financial statements included elsewhere in this Annual Report for additional information regarding Medallion.
    Net cash used in investing activities increased $1.1 billion from 2013 to 2014 and is mainly attributable to (i) increased capital expenditures for oil and natural gas properties and midstream service assets during the year ended December 31, 2014, (ii) significant leasehold acquisitions during the year ended December 31, 2014, which are included in the "Oil and natural gas properties" line item below, and (iii) proceeds from our Anadarko Basin Sale in the prior period, which offset the total cash flows used in investing activities of approximately $940.8 million, $706.8 million and $460.5 million for the yearsyear ended ended December 31, 2012, 2011 and 2010, respectively. The increases of $234.0 million from 2011 to 2012 and $246.2 million from 2010 to 2011 are due to increasing our drilling efforts in our Permian Basin and Anadarko Granite Wash areas in order to take advantage of strategic vertical and horizontal drilling opportunities and the increased stabilization of oil prices.2013.

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Our cash used in investing activities for acquisitions and capital expenditures for the periods presented isare summarized in the table below.below:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Acquisitions $(20,496)
$

$
Capital expenditures:            
oil and natural gas properties (895,312)
(687,062)
(454,161)
Pipeline and gathering assets (16,241)
(13,368)
(4,277)
Acquisitions of oil and natural gas properties $
 $(6,493) $(33,710)
Acquisition of mineral interests 
 (7,305) 
Oil and natural gas properties (588,017) (1,251,757) (702,349)
Midstream service assets (35,459) (60,548) (24,409)
Other fixed assets (8,755)
(6,413)
(2,198) (9,125) (27,444) (16,257)
Proceeds from other asset disposals 53

56

89
Investment in equity method investee (99,855) (55,164) (3,287)
Proceeds from dispositions of capital assets, net of costs 64,949
 1,750
 450,128
Net cash used in investing activities $(940,751) $(706,787) $(460,547) $(667,507) $(1,406,961) $(329,884)
Capital expenditure budget
Our board of directors approved a capital expenditure budget of $725approximately $345.0 million for calendar year 2013,2016, excluding investments in Medallion and acquisitions. We do not have a specific acquisition budget since the timing and size of acquisitions cannot be accurately forecasted. Since we do not direct the expansion activities of Medallion as a 49% owner, we cannot predict future capital commitments.
The amount, timing and allocation of capital expenditures are largely discretionary and within management's control. If oil, NGL and natural gas prices decline to levels below our acceptable levels, or costs increase to levels above our acceptable levels, we may choose to defer a portion of our budgeted capital expenditures until later periods in order to achieve the desired balance between sources and uses of liquidity and prioritize capital projects that we believe have the highest expected returns and potential to generate near-term cash flow. WeSubject to financing alternatives, we may also increase our capital expenditures significantly to take advantage of opportunities we consider to be attractive. We consistently monitor and may adjust our projected capital expenditures in response to success or lack of success in drilling activities, changes in prices, availability of financing and joint venture opportunities, drilling and acquisition costs, industry conditions, the timing of regulatory approvals, the availability of rigs, reduction of service costs, contractual obligations, internally generated cash flow and other factors both within and outside our control. For additional information on the impact of changing prices on our financial position, see "Item 7A. Quantitative and Qualitative Disclosures About Market Risk."

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Cash flows provided by financing activities
We had cash flows provided by financing activities of $569.2 million, $359.5 million and $319.8 million for For the yearsyear ended December 31, 2012, 2011 and 2010, respectively.
Net2015, net cash provided by financing activities was primarily the result of $500.0 million in gross proceeds from theour March 2015 Equity Offering of $754.2 million, our issuance of our 2022 senior unsecured notes on April 27, 2012March 2023 Notes of $350.0 million and net borrowings on our senior secured credit facilitySenior Secured Credit Facility of $310.0 million. The cash inflows were offset by the redemption of our January 2019 Notes of $576.2 million, payments on our Senior Secured Credit Facility of $10.8$475.0 million, payments for loan costs.debt issuance costs totaling $6.8 million and the purchase of treasury stock to satisfy employee tax withholding obligations that arose upon the lapse of restrictions on restricted stock totaling $2.8 million.
For the year ended December 31, 2011,2014, net cash provided by financing activities was primarily the result of $552.0 million in gross proceeds from the issuance of our 2019 senior unsecured notesJanuary 2022 Notes of $350.0$450.0 million, borrowings of $300.0 million on January 20, 2011our Senior Secured Credit Facility and $202.0 million on October 11, 2011, net proceeds from our IPOthe exercise of $319.4employee stock options of $1.9 million. These cash inflows were partially offset by payments for debt issuance costs totaling $7.8 million net reductionsand the purchase of our senior secured credit facility and former Broad Oak credit facilitytreasury stock to satisfy employee tax withholding obligations that arose upon the lapse of restrictions on restricted stock totaling $306.6 million, the payment of $100.0 million to pay in full and terminate our term loan and payments of $23.2 million for loan costs. Additionally, we incurred approximately $82.0 million in debt to facilitate the Broad Oak acquisition.$4.2 million.
For the year ended December 31, 2010,2013, net cash fromprovided by financing activities was the result of capital contributionsnet proceeds from Warburg Pincus, certain membersour August 2013 equity offering of our management$298.1 million and our independent directors totaling $85.0proceeds from the exercise of employee stock options of $2.1 million. These cash inflows were partially offset by the $165.0 million net borrowingspayments on our senior secured credit facility and former Broad Oak credit facilitySenior Secured Credit Facility, payments for debt issuance costs totaling $144.5$3.0 million and borrowingsthe purchase of treasury stock to satisfy employee tax withholding obligations that arose upon the lapse of restrictions on our term loan of $100.0 million, all of which were offsetrestricted stock totaling $2.1 million.

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Our cash provided by payments of $9.2 millionfinancing activities for loan costs. Following the Corporate Reorganization, we no longer have any commitments from Warburg Pincus or others to contribute any capital to us.periods presented is summarized in the table below:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Borrowings on Senior Secured Credit Facility $310,000
 $300,000
 $230,000
Payments on Senior Secured Credit Facility (475,000) 
 (395,000)
Issuance of March 2023 Notes 350,000
 
 
Issuance of January 2022 Notes 
 450,000
 
Redemption of January 2019 Notes (576,200) 
 
Proceeds from issuance of common stock, net of offering costs 754,163
 
 298,104
Purchase of treasury stock (2,811) (4,242) (2,083)
Proceeds from exercise of employee stock options 
 1,885
 2,050
Payments for debt issuance costs (6,759) (7,791) (2,987)
Net cash provided by financing activities $353,393
 $739,852
 $130,084
Debt
AtAs of December 31, 2012,2015, we were a party only to our senior secured credit facilitySenior Secured Credit Facility and the indentures governing our 2019 and 2022 senior unsecured notes. The Broad Oak credit facility was terminated on July 1, 2011 in conjunction with the Broad Oak acquisition. Our term loan facility was paid in full and retired in conjunction with the closing of the January 2011 offering of our 2019 senior unsecured notes.Senior Unsecured Notes.
Senior securedSecured Credit Facility. As of December 31, 2015, our Senior Secured Credit Facility, which matures November 4, 2018, had a maximum credit facility.    Laredo Petroleum, Inc. is the borrower on our senior secured credit facility, which has a capacityamount of up to $2.0 billion, and will mature on July 1, 2016. On November 7, 2012, we entered into the fifth amendment to our senior secured credit facility, which increased thea borrowing base to $825.0 million.of $1.15 billion, an aggregate elected commitment of $1.0 billion with $135.0 million outstanding.
Principal amounts borrowed under the senior secured credit facilityour Senior Secured Credit Facility are payable on the final maturity date with such borrowings bearing interest that is payable, at our election, either on the last day of each fiscal quarter at an Adjusted Base Rate or at the end of one-, two-, three-, six- or, to the extent available, 12-month interest periods (and in the case of six- and 12-month interest periods, every three months prior to the end of such interest period) at an Adjusted London Interbank Offered Rate, ("LIBOR"), in each case, plus an applicable margin based on the ratio of the outstanding senior secured creditamount on our Senior Secured Credit Facility to the borrowing base. At December 31, 2012, the applicable margin rates were 0.75% for the adjusted base rate advances and 1.75% for the Eurodollar advances. The amount of the senior secured credit facility outstanding at December 31, 2012 was subject to an interest rate of approximately 2.00%.elected commitment. We are also required to pay an annual commitment fee on the unused portion of the bank's commitment of 0.375% to 0.5%.
The borrowing base under our Senior Secured Credit Facility is subject to a semi-annual redetermination based on the lenders' evaluation of our oil, NGL and natural gas reserves. The lenders have the right to call for an interim redetermination of the borrowing base once between any two redetermination dates and in other specified circumstances. A continued decline in oil, NGL and natural gas prices will negatively impact our future borrowing base redeterminations. The next semi-annual redetermination will occur on May 1, 2016.
As of December 31, 2012, 20112015, 2014 and 2010,2013, borrowings outstanding under our senior secured credit facilitySenior Secured Credit Facility totaled $165.0$135.0 million, $85.0$300.0 million and $177.5 million,zero, respectively. As of March 8, 2013, theFebruary 16, 2015, $170.0 million was outstanding balance under our senior secured credit facilitySenior Secured Credit Facility and the amount available for borrowings was $300.0$830.0 million.
Our senior secured credit facilitySenior Secured Credit Facility is secured by a first priorityfirst-priority lien on our assets, (including stock of Laredo Petroleum, Inc.), including oil and natural gas properties constituting at least 80% of the present value of our proved reserves owned now or in the future. AtOur Senior Secured Credit Facility contains both financial and non-financial covenants. We were in compliance with these covenants as of December 31, 2012,2015, 2014 and 2013.
As of December 31, 2015, we were subject to the following financial and non-financial ratios on a consolidated basis:
a current ratio at the end of each fiscal quarter, as defined by the agreement, that is not permitted to be less than 1.00 to 1.00; and
at the end of each fiscal quarter, the ratio of earnings before interest, taxes, depletion, depreciation, depletion, amortization and exploration expenses and other non-cash charges ("EBITDAX") for the four fiscal quarters ending on the relevant date to the sum of net interest expense plus letter of credit fees, in each case for such period, is not permitted to be less than 2.50 to 1.00.

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Our senior secured credit facility contains both financial and non-financial covenants. We were in compliance with these covenants at December 31, 2012, 2011 and 2010.
Our senior secured credit facilitySenior Secured Credit Facility contains various non-financial covenants that limit our ability to:
incur indebtedness;

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pay dividends and repay certain indebtedness;
grant certain liens;
merge or consolidate;
engage in certain asset dispositions;
use proceeds for any purpose other than to finance the acquisition, exploration and development of mineral interests and for working capital and general corporate purposes;
make certain investments;
enter into transactions with affiliates;
engage in certain transactions that violate ERISA or the Internal Revenue Code or enter into certain employee benefit plans and transactions;
enter into certain swap agreements or hedge transactions;
incur, become or remain liable under any operating lease whichthat would cause rentals payable to be greater than $10.0$20.0 million in a fiscal year;
acquire all or substantially all of the assets or capital stock of any person, other than assets consisting of oil and natural gas properties and certain other oil and natural gas related acquisitions and investments; and
repay or redeem our senior unsecured notes,Senior Unsecured Notes, or amend, modify or make any other change to any of the terms in our senior unsecured notesSenior Unsecured Notes that would change the term, life, principal, rate or recurring fee, add call or pre-payment premiums, or shorten any interest periods.
As of December 31, 2012,2015, we were in compliance with the terms of our senior secured credit facility.Senior Secured Credit Facility. If an event of default exists under our senior secured credit facility,Senior Secured Credit Facility, the lenders will be able to accelerate the maturity of our senior secured credit facilitySenior Secured Credit Facility and exercise other rights and remedies. As of December 31, 2012,2015, each of the following willwould be an event of default:
failure to pay any principal of any note or any reimbursement obligation under any letter of credit when due or any interest, fees or other amount within certain grace periods;
failure to perform or otherwise comply with the covenants in the senior secured credit facilityour Senior Secured Credit Facility and other loan documents, subject, in certain instances, to certain grace periods;
a representation, warranty, certification or statement is proved to be incorrect in any material respect when made;
failure to make any payment in respect of any other indebtedness in excess of $25.0 million, any event occurs that permits or causes the acceleration of any such indebtedness or any event of default or termination event under a hedge agreement occurs in which the net hedging obligation owed is greater than $25.0 million;
voluntary or involuntary bankruptcy or insolvency events involving us or our subsidiariessubsidiary and in the case of an involuntary proceeding, such proceeding remains undismissed and unstayed for the applicable grace period;
one or more adverse judgments in excess of $25.0 million to the extent not covered by acceptable third party insurers, are rendered and are not satisfied, stayed or paid for the applicable grace period;
incurring environmental liabilities whichthat exceed $25.0 million to the extent not covered by acceptable third partythird-party insurers;
the loan agreement or any other loan paper ceases to be in full force and effect, or is declared null and void, or is contested or challenged, or any lien ceases to be a valid, first priority,first-priority, perfected lien;
failure to cure any borrowing base deficiency in accordance with the senior secured credit facility;our Senior Secured Credit Facility;
a change of control, as defined in our senior secured credit facility;Senior Secured Credit Facility; and
notification if an "event of default" shall occur under the indentures governing our senior unsecured notes.Senior Unsecured Notes.
Additionally, our senior secured credit facilitySenior Secured Credit Facility provides for the issuance of letters of credit, limited in the aggregate to the lesser of $20.0 million and the total availability under the facility. No letters of credit were outstanding at December 31, 2012.

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Termination of the Broad Oak credit facility.    At June 30, 2011, Broad Oak had a $600.0 million revolving credit facility under its seventh amendment executed on February 1, 2011 between Broad Oak and certain financial institutions. Under the seventh amendment, the borrowing base was redetermined at $375.0 million. As defined in the Broad Oak credit facility, the Adjusted Base Rate Advances and Eurodollar Advances under the facilities bore interest payable quarterly at an Adjusted Base Rate or Adjusted LIBOR plus an applicable margin based on the ratio of outstanding revolving credit to the conforming borrowing base. At June 30, 2011, the applicable margin rates were 1.50% for the Adjusted Base Rate advances and 2.50% for the Eurodollar advances. Additionally, Broad Oak was also required to pay a quarterly commitment fee of 0.5% on the unused portion of the bank's commitment. The Broad Oak credit facility was secured by a first priority lien on Broad Oak's oil and natural gas properties. Concurrently with the Broad Oak acquisition on July 1, 2011, the Broad Oak credit facility was paid in full and terminated.
Asas of December 31, 2010, borrowings outstanding under the Broad Oak credit facility totaled approximately $214.1 million.
Senior unsecured notes. On January 20, 2011 and October 19, 2011, Laredo Petroleum, Inc. completed the offerings of $350.0 million principal amount and $200.0 million principal amount, respectively, 9 1/2% senior unsecured notes due 2019. The 2019 senior unsecured notes will mature on February 15, 2019 and bear an interest rate of 9 1/2% per annum, payable semi-annually, in cash in arrears on February 15 and August 15 of each year. Our 2019 senior unsecured notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by Laredo Petroleum Holdings, Inc. and its subsidiaries (other than Laredo Petroleum, Inc.) (collectively, the “guarantors”). Our 2019 senior unsecured notes were issued under and are governed by an indenture dated January 20, 2011, among Laredo Petroleum, Inc., Wells Fargo Bank, National Association, as trustee, and the guarantors (the “2011 indenture”). The 2011 indenture contains customary terms, events of default and covenants relating2015. See Note 5.f to among other things, the incurrence of debt, the payment of dividends or similar restricted payments, entering into transactions with affiliates and limitations on asset sales. Indebtedness under our 2019 senior unsecured notes may be accelerated in certain circumstances upon an event of default as set forth in the 2011 indenture.
In connection with the issuance of the 2019 senior unsecured notes, Laredo Petroleum, Inc. and the guarantors party thereto entered into registration rights agreements with the initial purchasers of the 2019 senior unsecured notes and agreed to file with the SEC a registration statement with respect to an offer to exchange the 2019 senior unsecured notes for substantially identical notes (other than with respect to restrictions on transfer or to any increase in annual interest rate) that are registered under the Securities Act. The offer to exchange the 2019 senior unsecured notes for substantially identical notes registered under the Securities Act was consummated on January 13, 2012.
On April 27, 2012, Laredo Petroleum, Inc. completed an offering of $500.0 million aggregate principal amount of 7 3/8% senior unsecured notes due 2022. The 2022 senior unsecured notes will mature on May 1, 2022 and bear an interest rate of 7 3/8% per annum, payable semi-annually, in cash in arrears on May 1 and November 1 of each year, commencing November 1, 2012. The 2022 senior unsecured notes are fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by Laredo Petroleum Holdings, Inc. and the guarantors. Our 2022 senior unsecured notes were issued under and are governed by an indenture and supplement thereto, each dated April 27, 2012 (collectively, the “2012 indenture”), among Laredo Petroleum, Inc., Wells Fargo Bank, National Association, as trustee, and the guarantors. The 2012 indenture contains customary terms, events of default and covenants relating to, among other things, the incurrence of debt, the payment of dividends or similar restricted payments, entering into transactions with affiliates and limitations on asset sales. Indebtedness under our 2022 senior unsecured notes may be accelerated in certain circumstances upon an event of default as set forth in the 2012 indenture. The net proceeds from the 2022 senior unsecured notes were used (i) to pay in full $280.0 million outstanding under our senior secured credit facility, and (ii) for general working capital purposes.
In connection with the issuance of the 2022 senior unsecured notes, Laredo Petroleum, Inc. and the guarantors party thereto entered into registration rights agreements with the initial purchasers of the 2022 senior unsecured notes and agreed to file with the SEC a registration statement with respect to an offer to exchange the 2022 senior unsecured notes for substantially identical notes (other than with respect to restrictions on transfer or to any increase in annual interest rate) that are registered under the Securities Act. The offer to exchange the 2022 senior unsecured notes for substantially identical notes registered under the Securities Act was consummated on August 1, 2012.
Refer to Note C of our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K for further discussion of our Senior Secured Credit Facility.

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Senior Unsecured Notes. The following table presents principal amounts and applicable interest rates for our outstanding Senior Unsecured Notes as of December 31, 2015:
(in millions, except for interest rates) Principal Interest rate
January 2022 Notes $450.0
 5.625%
May 2022 Notes $500.0
 7.375%
March 2023 Notes $350.0
 6.250%

(1)See Note 5 of our consolidated financial statements included elsewhere in this Annual Report for further discussion of our Senior Unsecured Notes.
Utilizing proceeds from the 2019 senior unsecured notesMarch 2023 Notes and the 2022 senior unsecured notes.March 2015 Equity Offering, we redeemed the January 2019 Notes in full on April 6, 2015. See Note 5.e to our consolidated financial statements included elsewhere in this Annual Report for information regarding the early redemption of the January 2019 Notes.
As of March 8, 2013,February 16, 2016, we had a total of $1.1$1.3 billion of senior unsecured notesSenior Unsecured Notes outstanding.

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Obligations and commitments
We had the following significant contractual obligations and commitments that will require capital resources atas of December 31, 2012:2015:
  Payments due
(in thousands) 
Less than
1 year
 1 - 3 years 3 - 5 years 
More than
5 years
 Total
Senior secured credit facility(1)
 $
 $
 $165,000
 $
 $165,000
Senior unsecured notes 89,125
 178,250
 178,250
 1,294,313
 1,739,938
Drilling rig commitments(2)
 16,816
 
 
 
 16,816
Derivative financial instruments(3)
 10,904
 14,222
 357
 
 25,483
Asset retirement obligations(4)
 865
 2,218
 1,242
 17,180
 21,505
Office and equipment leases(5)
 1,675
 2,786
 1,305
 446
 6,212
Performance unit liability awards(6)
 
 5,390
 
 
 5,390
Total $119,385
 $202,866
 $346,154
 $1,311,939
 $1,980,344
  Payments due
(in thousands) 
Less than
1 year
 1 - 3 years 3 - 5 years 
More than
5 years
 Total
Senior Secured Credit Facility(1)
 $
 $135,000
 $
 $
 $135,000
Senior Unsecured Notes(2)
 84,062
 168,125
 168,125
 1,447,969
 1,868,281
Drilling rig commitments(3)
 10,253
 
 
 
 10,253
Firm sale and transportation commitments(4)
 55,091
 123,970
 81,992
 164,598
 425,651
Derivatives(5)
 8,629
 6,222
 
 
 14,851
Asset retirement obligations(6)
 1,547
 5,151
 6,664
 32,944
 46,306
Office leases(7)
 3,087
 6,404
 3,702
 8,217
 21,410
Performance unit liability awards(8)
 6,394
 
 
 
 6,394
Capital contribution commitment to equity method investee(9)
 27,583
 
 
 
 27,583
Total $196,646
 $444,872
 $260,483
 $1,653,728
 $2,555,729

(1)Includes outstanding principal amount at December 31, 2012.2015. This table does not include future commitment fees, interest expense or other fees on our senior secured credit facilitySenior Secured Credit Facility because it is a floating rate instrument and we cannot determine with accuracy the timing of future loan advances, repayments or future interest rates to be charged. As of December 31, 2012,2015, the principal on our senior secured credit facilitySenior Secured Credit Facility is due on July 1, 2016.November 4, 2018.
(2)AtValues presented include both our principal and interest obligations.
(3)As of December 31, 2012,2015, we had several drilling rigs under term contracts which expire during 2013. Any other rig performing work for us is doing so on a well-by-well basis and therefore can be released without penalty at the conclusion of drilling on the current well. Therefore, drilling obligations on well-by-well rigs have not been included in the table above.2016. The value in the table represents the gross amount that we are committed to pay. However, we will record our proportionate share based on our working interest in our audited consolidated financial statements as incurred. See Note I12.c to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional discussion of our drilling contract commitments.
(3)(4)As of December 31, 2015, we have committed to deliver for sale or transportation fixed quantities of production under certain contractual arrangements that specify the delivery of a fixed and determinable quantity. If not fulfilled, we are subject to minimal volume penalties. See "Item 1A. Risk Factors" and Note 12.d to our consolidated financial statements included elsewhere in this Annual Report for additional discussion of our firm sale and transportation commitments.
(5)Represents payments due for deferred premiums on our commodity hedging contracts. See Note 9.a to our consolidated financial statements included elsewhere in this Annual Report for additional discussion of our deferred premiums.
(4)(6)Amounts represent our estimate of future asset retirement obligations. Because these costs typically extend many years into the future, estimating these future costs requires management to make estimates and judgments that are subject to future revisions based upon numerous factors, including the rate of inflation, changing technology and the political and regulatory environment. See Note B2.m to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K.for additional information.
(5)(7)See Note I12.a to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K for a description of our lease obligations.
(6)(8)Represents cash awards that were granted on February 3, 201215, 2013 under the 2011 Omnibus Equity Incentive Plan. The payout of theFebruary 15, 2013 performance units is dependent upon the Company's relative Total Shareholder Return performance against a set of peers and will beawards were paid out in 2015.January 2016. See Note B6.e to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional discussion of our performance units.
(9)See Note 15 to our consolidated financial statements included elsewhere in this Annual Report for a discussion of our equity method investee.
Critical accounting policies and estimates
The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of our financial statements requires

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us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosure of contingent assets and liabilities. Certain accounting policies involve judgments and uncertainties to such an extent that there is reasonable likelihood that materially different amounts could have been reported under different conditions, or if different assumptions had been used. We evaluate our estimates and assumptions on a regular basis. We base our estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates and assumptions used in preparation of our consolidated financial statements. We believe these accounting policies reflect our more significant estimates and assumptions used in preparation of our consolidated financial statements.
In management's opinion, the more significant reporting areas impacted by our judgments and estimates are (i) the choice of accounting method for oil and natural gas activities, (ii) estimation of oil and natural gas reserve quantities and standardized measure of future net revenues, (iii) impairment of oil and natural gas properties, (iv) revenue recognition, (v) estimation of income taxes, (vi) asset retirement obligations, (vii) valuation of derivatives and deferred premiums, (viii) valuation of stock-based compensation and performance unit compensation and (ix) fair value of assets acquired and liabilities assumed in an acquisition. Management's judgments and estimates in these areas are based on information available from both internal and external sources, including engineers, geologists and historical experience in similar matters. Actual results could differ from the estimates as additional information becomes known.
There have been no material changes in our critical accounting policies and procedures during the year ended December 31, 2015. See Note B2.b to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for a discussion of additional accounting policies and estimates made by management.

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Method of accounting for oil and natural gas properties
The accounting for our business is subject to special accounting rules that are unique to the oil and natural gas industry. There are two allowable methods of accounting for oil and natural gas business activities: the successful efforts method and the full cost method. We follow the full cost method of accounting under which all costs associated with property acquisition, exploration and development activities are capitalized. We also capitalize internal costs that can be directly identified with our acquisition, exploration and development activities and do not include any costs related to production, general corporate overhead or similar activities.
Under the full cost method, capitalized costs are amortized on a composite unit of production method based on proved oil and natural gas reserves. If we maintain the same level of production year over year, the depletion, depreciation depletion and amortization expense may be significantly different if our estimate of remaining reserves or future development costs changes significantly. Proceeds from the sale of properties are accounted for as reductions of capitalized costs unless such sales involve a significant change in the relationship between costs and provedevaluated reserves, in which case a gain or loss is recognized. The costs of unprovedunevaluated properties not being depleted are excluded from amortization until the properties are evaluated. We review all of our unevaluated properties quarterly to determine whether or not and to what extent provedevaluated reserves have been assigned to the properties, and otherwise if impairment has occurred.
Oil and natural gas reserve quantities and standardized measure of future net revenue
OurOn an annual basis, our independent reserve engineers prepare the estimates of oil, NGL and natural gas reserves and associated future net cash flows. The SEC has defined proved reserves as the estimated quantities of oil, NGL and natural gas whichthat geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions. The process of estimating oil and natural gas reserves is complex, requiring significant decisions in the evaluation of available geological, geophysical, engineering and economic data. The data for a given property may also change substantially over time as a result of numerous factors, including additional development activity, evolving production history and a continual reassessment of the viability of production under changing economic conditions. As a result, material revisions to existing reserve estimates occur from time to time. Although every reasonable effort is made to ensure that reserve estimates reported represent the most accurate assessments possible, the subjective decisions and variances in available data for various properties increase the likelihood of significant changes in these estimates. If such changes are material, they could significantly affect future amortization of capitalized costs and result in impairment of assets that may be material.
Revenue recognition
Revenue from our interests in producing wells is recognized when the product is delivered, at which time the customer has taken title and assumed the risks and rewards of ownership and collectability is reasonably assured. The sales prices for oil and natural gas are adjusted for transportation and other related deductions. These deductions are based on contractual or historical data and do not require significant judgment. Subsequently, these revenue deductions are adjusted to reflect actual charges based on third party documents. Since there is a ready market for oil and natural gas, we sell the majority of production soon after it is produced at various locations.
Impairment of oil and natural gas properties
We review the carrying value of our oil and natural gas properties under the full cost accounting rules of the SEC on a quarterly basis. This quarterly review is referred to as a ceiling test. Under the ceiling test, capitalized costs, less accumulated amortization and related deferred income taxes, may not exceed an amount equal to the sum of the present value of estimated future net revenues less estimated future expenditures to be incurred in developing and producing the provedevaluated reserves, less

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any related income tax effects. For the year ended December 31, 2015, we recorded a full cost impairment expense of $2.4 billion. For the years ended December 31, 2012, 20112014 and 2010,2013, the resultresults of the ceiling test concluded that the carrying amount of our oil and natural gas properties was significantly below the calculated ceiling test value and as such, our properties were not impaired and a write-down was not required. In calculating future net revenues, current prices are calculated as the average oil and natural gas prices during the preceding 12-month period prior to the end of the current reporting period, determined as the unweighted arithmetic average first-day-of- the-monthfirst-day-of-the-month prices for the prior 12-month period and costs used are those as of the end of the appropriate quarterly period.
Asset retirement obligations
In accordance with the Financial Accounting Standard Board's (the "FASB") authoritative guidance on asset retirement obligations ("ARO"), we record the fair value of a liability for a legal obligation See Note 2.g to retire an asset in the period in which the liability is incurred with the corresponding cost capitalized by increasing the carrying amount of the related long-lived asset. For oil and natural gas properties, this is the period in which the well is drilled or acquired. The ARO represents the estimated amount we will incur to plug, abandon and remediate the properties at the end of their productive lives, in accordance with applicable state laws. The liability is accreted to its present value each period and the capitalized cost is depreciated on the unit

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of production method. The accretion expense is recorded as a component of depreciation, depletion and amortization in our consolidated statement of operations.
We determine the ARO by calculating the present value of estimated cash flows related to the liability. Estimating the future ARO requires management to make estimates and judgments regarding timing and existence of a liability, as well as what constitutes adequate restoration. Included in the fair value calculation are assumptions and judgments including the ultimate costs, inflation factors, credit adjusted discount rates, timing of settlement and changes in the legal, regulatory, environmental and political environments. To the extent future revisions to these assumptions impact the fair value of the existing ARO liability, a corresponding adjustment is made to the related asset.
Derivative financial instruments
We record all derivative instruments on the balance sheet as either assets or liabilities measured at their estimated fair value. We have not designated any derivative instruments as hedges for accounting purposes and we do not enter into such instruments for speculative trading purposes. Realized gains and realized losses from the settlement of commodity derivative instruments and unrealized gains and unrealized losses from valuation changes in the remaining unsettled commodity derivative instruments are reported under "Other Income (Expense)" in our consolidated statements of operations.
Stock-based compensation
We measure stock-based compensation expense at the grant date based on the fair value of an award and recognize the compensation expense on a straight-line basis over the service period, which is usually the vesting period. The fair value of the awards is based on the value of our common stock on the date of grant. The determination of the fair value of an award requires significant estimates and subjective judgments regarding, among other things, the appropriate option pricing model, the expected life of the award and forfeiture rate assumptions. Beginning in the first quarter of 2012, we utilized the Black-Scholes option pricing model to measure the fair value of stock options granted under our 2011 Omnibus Equity Incentive Plan. As there are inherent uncertainties related to these factors and our judgment in applying them to the fair value determinations, there is risk that the recorded stock compensation may not accurately reflect the amount ultimately earned by the employee. Refer to Note D of our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional information regardingdiscussion of our stock-based compensation.impairment of oil and natural gas properties.
Performance unit compensationRevenue recognition
ForRevenue from our interests in producing wells is recognized when the product is delivered, at which time the customer has taken title and assumed the risks and rewards of ownership and collectability is reasonably assured. The sales prices for oil, NGL and natural gas are adjusted for transportation and other related deductions. These deductions are based on contractual or historical data and do not require significant judgment. Subsequently, these revenue deductions are adjusted to reflect actual charges based on third-party documents. As there is a ready market for oil, NGL and natural gas, we sell the majority of production soon after it is produced at various locations.
Midstream service revenues are recorded at the time products are sold or services are provided to third parties at a fixed or determinable price, delivery or performance unit awards issued to management in 2012, we utilized a Monte Carlo simulation prepared by an independent third party to determine the fair valuehas occurred, title has transferred and collectability of the awards at the date of grantrevenue is probable. Revenues and expenses attributable to re-measure the fair value at the end of each reporting period until settlement in accordance with GAAP. Dueoil purchases and sales are reported on a gross basis when we take title to the relatively short trading history for our stock, the volatility criteria utilized in the Monte Carlo simulation is based on the volatilitiesproducts and has risks and rewards of a group of peer companies that have been determined to be most representative of our expected volatility. The performance unit awards are classified as liability awards as they have a combination of performance and service criteria and will be settled in cash at the end of the requisite service period based on the achievement of certain performance criteria. The liability and related compensation expense for each period for these awards is recognized by dividing the fair value of the total liability by the requisite service period and recording the pro rata share for the period for which service has already been provided. Compensation expense for the performance units is included in “General and administrative” expense in our consolidated statements of operations with the corresponding liability recorded in the “Other long-term liabilities” section of our consolidated balance sheet. As there are inherent uncertainties related to the factors and our judgment in applying them to the fair value determinations, there is risk that the recorded performance unit compensation may not accurately reflect the amount ultimately earned by the member of management. Refer to Note B of our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional information regarding our performance unit awards.ownership.
Income taxes
AtAs of December 31, 2012, 20112015, and 2010,2014, we had a net deferred tax assetsliability of $62.6 million, $95.6 millionzero and $155.0$176.9 million, respectively.
As part of the process of preparing the consolidated financial statements, we are required to estimate the federal and state income taxes in each of the jurisdictions in which we operate. This process involves estimating the actual current tax exposure together with assessing temporary differences resulting from differing treatment of items such as derivative instruments, depletion, depreciation depletion and amortization, and certain accrued liabilities for tax and financial accounting purposes. These differences and our net operating loss carry-forwards result in deferred tax assets and liabilities, which are included in our consolidated balance sheet. We must then assess, using all available positivenegative and negativepositive evidence, the likelihood that the deferred tax assets will be recovered from future taxable income. If we believe that recovery is not likely, we must establish a valuation allowance. Generally, to the extent we establish a valuation allowance or increase or decrease this allowance in a

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period, we must include an expense or reduction of expense within the tax provision in the consolidated statement of operations.
Under accounting guidance for income taxes, an enterprise must use judgment in considering the relative impact of negative and positive evidence. The weight given to the potential effect of negative and positive evidence should be commensurate with the extent to which it can be objectively verified. The more negative evidence that exists (i) the more positive evidence is necessary and (ii) the more difficult it is to support a conclusion that a valuation allowance is not needed for all or a portion of the deferred tax asset. Among the more significant types of evidence that we consider are:
our earnings history exclusive of the loss that created the future deductible amount coupled with evidence indicating that the loss is an aberration rather than a continuing condition;
the ability to recover our net operating loss carry-forward deferred tax assets in future years;
the existence of significant proved oil and natural gas reserves;
our ability to use tax planning strategies, such as wellelecting to capitalize intangible drilling costs as opposed to expensing such costs;
current price protection utilizing oil and natural gas hedges; and
future revenue and operating cost projections that indicate we will produce more than enough taxable income to realize the deferred tax asset based on existing sales prices and cost structures.
current market prices for oil, NGL and natural gas
During 2012,2015, in evaluating whether it was more-likely-than-not that our deferred tax asset was recoverable from future net income, we considered our strong earnings history for the current and most recent two years.
We also determined through our analysis that our net operating loss carry-forward deferred tax asset was recoverable over future years and that we had no material net operating losses expiring prior to 2026. In performing our analysis, we used inputs from third partythird-party sources, which came primarily from our reserve reports that were independently estimated by a third party engineer.Ryder Scott. Based on our forecasted results from multiple analyses, atduring the year

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ended December 31, 2012 and 2011, future taxable income from our oil and natural gas reserves is expected to be sufficient to utilize the entire net operating loss carry-forward in approximately seven to ten years. We believe this analysis provides significant positive evidence that is objectively verifiable, as it uses three-year historical operating results to predict future taxable income. We considered all applicable tax deductions in our analysis which were substantially known and were not subject to significant estimates.
At December 31, 2012,2015, we had charitable contribution carry-forwards of $0.2 million, which will begin to expire in 2013. The utilization of charitable contributions for any tax year is limited to 10% of taxable income without regard to charitable contributions, net operating losses, and dividend received deductions. A corporation is permitted to carry-over to the five succeeding tax years contributions that exceeded the 10% limitation, but deductions in those years are also subject to the maximum limitation. Based on our analysis, we do not believedetermined it is more-likely-than-notmore likely than not that we will utilize the carry-forward in its entirety before expiration, therefore,not realize our net deferred tax assets. Therefore, a full2015 valuation allowance of $0.07$676.0 million has been recorded against the related deferred tax asset.
Based on our analysis, we determined at December 31, 2012 that given the proper weight of the positive evidence noted above, it was more-likely-than-not that our deferred tax asset would be recovered with the exception of the deferred tax asset related to the charitable contribution carry-over.recorded.
We will continue to assess the need for a valuation allowance against deferred tax assets considering all available evidence obtained in future reporting periods.
Income tax windfalls and shortfalls. For certain stock-based compensation awards that are expected to result in a tax deduction under existing tax law, a deferred tax asset is established as we recognize compensation cost for book purposes. Book compensation cost is determined on the grant date and recognized over the award's requisite service period. The corresponding deferred tax asset also is measured on the grant date and recognized over the service period. The related tax deduction is measured on the vesting date for restricted stock and on the exercise date for stock options. As a result, there will almost always be a difference in the amount of compensation cost recognized for book purposes versus the amount of tax deduction that a company may receive. If our assumptions regarding forecasted production, pricingthe tax deduction exceeds the cumulative book compensation cost that we recognized, the tax benefit associated with any excess deduction will be considered an excess benefit or windfall and margins are not achieved by amounts in excesswill be recognized as additional paid-in capital ("APIC"). If the tax deduction is less than the cumulative book compensation cost, the tax effect of the resulting difference is a deficiency or shortfall, and should be charged first to APIC, to the extent of our sensitivity analysis,pool of windfall tax benefits, with any remainder recognized in income tax expense. We utilize a one-pool approach when accounting for the pool of windfall tax benefits. In the one-pool approach, employees and non-employees are grouped into a single pool. As of December 31, 2015 and 2014, we did not have any eligible windfall tax benefits to offset future shortfalls as no excess tax benefits have been recognized, therefore all shortfalls have been recognized in income tax expense.
Variable interest entities
An entity is referred to as a variable interest entity ("VIE") pursuant to accounting guidance for consolidation if it possesses one of the following criteria: (i) it is thinly capitalized, (ii) the residual equity holders do not control the entity, (iii) the equity holders are shielded from the economic losses, (iv) the equity holders do not participate fully in the entity's residual economics, or (v) the entity was established with non-substantive voting interests. We would consolidate a VIE when we are the primary beneficiary of a VIE. A primary beneficiary has the power to direct the activities that most significantly impact the activities of the VIE and the right to receive the benefits or the obligation to absorb the losses of the entity that could be potentially significant to the VIE. We continually monitor our unconsolidated VIE exposure in order to determine if any events have occurred that could cause the primary beneficiary to change. See Notes 15 and 16.a to our consolidated financial statements included elsewhere in this Annual Report for a discussion of our unconsolidated VIE, Medallion.
Asset retirement obligations ("ARO")
We record the fair value of a liability for a legal obligation to retire an asset in the period in which the liability is incurred with the corresponding cost capitalized by increasing the carrying amount of the related long-lived asset. For oil and natural gas properties, this is the period in which the well is drilled or acquired. For midstream service assets, this is the period in which the asset is placed in service. The ARO represents the estimated amount we will incur to plug, abandon and remediate the properties at the end of their productive lives, in accordance with applicable state laws. The liability is accreted to its present value each period and for oil and natural gas properties the capitalized cost is depreciated on the unit of production method or for midstream service assets depreciated over its useful life. The accretion expense is recorded in the line item "Accretion of asset retirement obligations" in our consolidated statement of operations.
We determine the ARO by calculating the present value of estimated cash flows related to the liability. Estimating the future ARO requires management to make estimates and judgments regarding timing and existence of a liability, as well as what constitutes adequate restoration. Included in the fair value calculation are assumptions and judgments including the ultimate costs, inflation factors, credit adjusted discount rates, timing of settlement and changes in the legal, regulatory, environmental and political environments. To the extent future revisions to these assumptions impact the fair value of the existing ARO liability, a corresponding adjustment is made to the related asset.
Derivatives
We record all derivatives on the balance sheet as either assets or liabilities measured at their estimated fair value. We have not designated any derivatives as hedges for accounting purposes, and we do not enter into such instruments for speculative trading purposes. Gains and losses from the settlement of commodity derivatives and gains and losses from valuation changes in the remaining unsettled commodity derivatives are reported under "Non-operating income (expense)" in our consolidated statements of operations.

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Stock-based compensation
We measure stock-based compensation expense at the grant date based on the fair value of an award and recognize the compensation expense on a straight-line basis over the service period, which is usually the vesting period. The fair value of the awards is based on the value of our common stock on the grant date. The determination of the fair value of an award requires significant estimates and subjective judgments regarding, among other things, the appropriate option pricing model, the expected life of the award and forfeiture rate assumptions. We utilize the Black-Scholes option pricing model to measure the fair value of stock options granted under our 2011 Omnibus Equity Incentive Plan. During the year ended December 31, 2014, we began capitalizing a portion of stock-based compensation for employees who are directly involved in the acquisition, exploration and development of our properties into the full cost pool. Capitalized stock-based compensation is included as an addition to "Oil and natural gas properties" in the consolidated balance sheets.
As there are inherent uncertainties related to these performance criteria and our judgment in applying them to the fair value determinations, there is risk that the recorded stock compensation may not accurately reflect the amount ultimately earned by the employee. Refer to Note 6 of our consolidated financial statements included elsewhere in this Annual Report for additional information regarding our stock-based compensation.
Performance unit and performance share compensation
For performance unit awards issued to management, we utilized a Monte Carlo simulation prepared by an independent third party to determine the fair value of the awards at the grant date and to re-measure the fair value at the end of each reporting period until settlement in accordance with GAAP. The volatility criteria utilized in the Monte Carlo simulation is based on the stock prices' expected volatility. The performance unit awards are classified as liability awards as they have a significant impactcombination of performance and service criteria and were settled in cash at the end of their respective three-year requisite service periods based on the achievement of certain performance criteria. The liability and related compensation expense for each period for these awards is recognized by dividing the fair value of the total liability by the requisite service period and recording the pro rata share for the period for which service has already been provided. Compensation expense for the performance units is included in "General and administrative" expense in our consolidated statements of operations with the corresponding taxable income which may requireliabilities recorded in the "Other current liabilities" line item of our consolidated balance sheets. Refer to Note 6.e of our consolidated financial statements included elsewhere in this Annual Report for additional information regarding our performance unit awards.
Our performance share awards are accounted for as equity awards and are included in stock-based compensation expense. The fair value of the performance share awards issued during 2015 and 2014 were based on a projection of the performance of our stock price relative to our peer group utilized in a forward-looking Monte Carlo simulation. The fair values of the performance share awards will not be re-measured after the initial valuation allowanceof the awards and will be expensed on a straight-line basis over their respective three-year requisite service periods. Refer to be recorded againstNote 6.c of our deferred tax assets at that time.consolidated financial statements included elsewhere in this Annual Report for additional information regarding our performance unit awards.
Recent accounting pronouncements
InWe early adopted new guidance regarding the presentation of debt issuance costs and the presentation of income taxes as of September 30, 2015 and December 2011, the FASB issued Accounting Standards Update ("ASU") 2011-11, Disclosures about Offsetting Assets31, 2015, respectively. For additional discussion of these early adoptions and Liabilities, which requires disclosure of both gross information and net information about derivative instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subjectother recent accounting pronouncements, see Note 14 to an agreement similar to master netting arrangements. This information will enable users of an entity's financial statements to evaluate the effect or potential effect of netting arrangements on an entity's financial position, including the effect or potential effect of rights of setoff associated with certain financial instruments and derivative instruments within the scope of the update.
The update is effective for annual periods beginning on or after January 1, 2013, and interim periods within those annual periods and is to be applied retrospectively for all comparative periods presented. We do not expect the adoption of this ASU to have a material effect on our consolidated financial statements.statements included elsewhere in this Annual Report.

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Inflation
Inflation in the U.S. has been relatively low in recent years and did not have a material impact on our results of operations for the period from December 31, 20102013 through the year ended December 31, 2012.2015. Although the impact of inflation has been insignificant in recent years, it continues to be a factor in the U.S. economy and historically, we do experiencehave experienced inflationary pressure on the costs of oilfield services and equipment as drilling activity increases in the areas in which we operate.
Off-balance sheet arrangements
Currently, we do not have any off-balance sheet arrangements other than operating leases, which aredrilling contracts and firm sale and transportation commitments. See Notes 12.a, 12.c and 12.d to our consolidated financial statements included elsewhere in "—Obligationsthis Annual Report and commitments.""Item 1. Business—Our core assets—Midstream and marketing" for additional information.


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Item 7A.    Quantitative and Qualitative Disclosures About Market Risk
The primary objective of the following information is to provide forward-looking quantitative and qualitative information about our potential exposure to market risk. The term “market risk”"market risk," in our case, refers to the risk of loss arising from adverse changes in oil, NGL and natural gas prices and in interest rates. The disclosures are not meant to be precise indicators of expected future losses, but rather indicators of how we view and manage our ongoing market risk exposures. All of our market risk sensitive instruments were entered into for hedging purposes, rather than for speculative trading.
Commodity price exposure. exposure
Due to the inherent volatility in oil, NGL and natural gas prices, we use commodity derivative instruments,derivatives, such as collars,puts, swaps, putscollars and basis swaps to hedge price risk associated with a significant portion of our anticipated oil and natural gas production. By removing a majorityportion of the price volatility associated with future production, we expect to reduce, but not eliminate, the potential effects of variability in cash flowflows from operations due to fluctuations in commodity prices. We have not elected hedge accounting on these derivatives and, therefore, the unrealized gains and losses on open positions are reflected in earnings. At each period end, we estimate the fair valuevalues of our commodity derivatives using an independent third partythird-party valuation and recognize an unrealizedthe associated gain or loss. During the years ended December 31, 2012, 2011 and 2010 we recognized an unrealized loss of $18.2 million, unrealized gain of $17.3 million and unrealized loss of $11.5 million, respectively, related to our commodity derivatives, based on market price fluctuations compared to prices in our commodity derivative contracts.consolidated statements of operations included elsewhere in this Annual Report.
     Our hedged positions as of December 31, 2012 are as follows:
  
Year
 2013
 
Year
 2014
 
Year
 2015
 Total
Oil(1)
  
    
  
Total volume hedged with ceiling price (Bbl) 1,368,000
 726,000
 252,000
 2,346,000
Weighted average ceiling price ($/Bbl) $109.28
 $128.87
 $135.00
 $118.11
Total volume hedged with floor price (Bbl) 2,448,000
 1,266,000
 708,000
 4,422,000
Weighted average floor price ($/Bbl) $76.48
 $75.13
 $75.00
 $75.86
Natural gas(2)
        
Total volume hedged with ceiling price (MMBtu) 16,060,000
 18,120,000
 15,480,000
 49,660,000
Weighted average ceiling price(3) ($/MMBtu)
 $5.77
 $6.09
 $6.00
 $5.96
Total volume hedged with floor price (MMBtu) 22,660,000
 18,120,000
 15,480,000
 56,260,000
Weighted average floor price(3) ($/MMBtu)
 $3.57
 $3.38
 $3.00
 $3.35
Oil basis swaps        
Total volume hedged (Bbl) 668,000
 62,000
 
 730,000
Weighted average price ($/Bbl) $2.60
 $2.60
 $
 $2.60
Natural gas basis swaps        
Total volume hedged(4) (MMBtu)
 1,200,000
 
 
 1,200,000
Weighted average price ($/MMBtu) $0.33
 $
 $
 $0.33

(1)The oil derivatives are settled based on the month's average daily NYMEX price of West Texas Intermediate Light Sweet Crude Oil.
 (2)The natural gas derivatives are settled based on NYMEX natural gas futures, the Northern Natural Gas Co. demarcation price, the ANR Oklahoma index gas price, West Texas WAHA index gas price or the Panhandle Eastern Pipeline spot price of natural gas for the calculation period. The basis swap derivatives are settled based on the differential between the NYMEX natural gas futures and the West Texas WAHA index gas price.
 (3)The cash settlement price of our basis swaps is calculated on the difference between our natural gas futures contracts that settle on the NYMEX index and the NYMEX index price at the time of settlement. At December 31, 2012, we had 20,000 MMBtu for 2013 in basis swaps that did not have corresponding volumes hedged with a NYMEX index price. As such, the weighted average price of the basis differential attributable to these volumes has not been included in the weighted average ceiling and floor prices presented above as these basis contracts are not expected to settle based on our December 31, 2012 hedge positions.
 (4)Total volume hedged for natural gas basis swaps includes 20,000 MMBtu for 2013 in basis swaps that did not have corresponding volumes hedged with a NYMEX index price at December 31, 2012. 

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The fair values of our commodity derivatives are largely determined by estimates of the forward curves of the relevant price indices. AtAs of December 31, 2012,2015, a 10% change in the forward curves associated with our commodity derivative instrumentsderivatives would have changed our net positions byto the following amounts:
(in thousands) 10% Increase 10% Decrease 10% Increase 10% Decrease
Commodity derivatives $(18,546) $25,469
 $238,652
 $318,542
As of December 31, 2015 and 2014, the fair values of our open derivatives contracts were $276.2 million and $312.3 million, respectively. Refer to Notes 2.f, 8 and 9 of our consolidated financial statements included elsewhere in this Annual Report for additional disclosures regarding our derivatives.
Interest rate risk. risk
Our senior secured credit facilitySenior Secured Credit Facility bears interest at a floating rate and, atas of December 31, 2012,2015, we had approximately $165.0$135.0 million in indebtedness outstanding on our senior secured credit facility.Senior Secured Credit Facility. Our 2019January 2022 Notes, May 2022 Notes and 2022 senior unsecured notesMarch 2023 Notes bear fixed interest rates and we had $550.0$450.0 million, (excluding the remaining premium of $1.8$500.0 million) and $500.0$350.0 million outstanding, respectively, atas of December 31, 2012,2015, as shown in the table below. 
 Expected maturity date  Expected maturity date  
(in millions except for interest rates) 2013 2014 2015 2016 2017 Thereafter Total 2016 2017 2018 2019 2020 Thereafter Total
2019 senior unsecured notes - fixed rate $
 $
 $
 $
 $

$550.0
 $550.0
January 2022 Notes - fixed rate $
 $
 $
 $
 $
 $450.0
 $450.0
Average interest rate % % % % % 9.5% 9.5% % % % % % 5.625% 5.625%
2022 senior unsecured notes - fixed rate $
 $
 $
 $
 $
 $500.0
 $500.0
May 2022 Notes - fixed rate $
 $
 $
 $
 $
 $500.0
 $500.0
Average interest rate % % % % % 7.375% 7.375% % % % % % 7.375% 7.375%
Senior secured credit facility - variable rate $
 $
 $
 $165.0
 $
 $
 $165.0
March 2023 Notes - fixed rate $
 $
 $
 $
 $
 $350.0
 $350.0
Average interest rate % % % 2.0% % % 2.0% % % % % % 6.250% 6.250%
Senior Secured Credit Facility - variable rate $
 $
 $135.0
 $
 $
 $
 $135.0
Average interest rate % % 1.903% % % % 1.903%
Through interest rate derivative contracts, we have attempted to mitigate our exposure to changes in interest rates. We have entered into various fixed interest rate swaps and a cap agreement which hedge our exposure to interest rate variations on our senior secured credit facility. At December 31, 2012, we had one interest rate swap and one interest rate cap outstanding for a notional amount of $100.0 million with fixed pay rates ranging from 1.11% to 3.00% and terms expiring in September 2013.
Counterparty and customer credit risk. risk
OurAs of December 31, 2015, our principal exposures to credit risk are through receivables resultingof (i) $276.2 million from the fair values of our open derivative contracts, (ii) $27.5 million from matured derivatives, financial contracts (approximately $6.7(iii) $25.6 million at December 31, 2012), joint interest receivables (approximately $30.9 million at December 31, 2012) and the receivables from the sale of our oil, NGL and natural gas production, (approximately $48.4 million at December 31, 2012), whichthat we market to energy marketing companies and refineries.refineries, (iv) $21.4 million from joint-interest partners and (v) $11.8 million from midstream product sales. 
We are subject to credit risk due to the concentration of (i) our oil, NGL and natural gas receivables with several significant customers. We do notcustomers and (ii) our midstream service product sales receivables with one significant customer. On occasion we require our customers to post collateral, and the inability of our significant customers to meet their obligations to us or their insolvency or liquidation may adversely affect our financial results.
 
We have entered into International Swap Dealers Association Master Agreements (“("ISDA Agreements”Agreements") with each of

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our derivative counterparties, who also are each lenders in our senior secured credit facility.Senior Secured Credit Facility. The terms of the ISDA Agreements provide usthe counterparties and the counterpartiesus with rights of set offoffset upon the occurrence of defined acts of default by either usa counterparty or a counterpartyus to a derivative, whereby the party not in default may set offoffset all derivative liabilities owed to the defaulting party against all derivative asset receivables from the defaulting party.
 
Refer to Note H of11 to our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K orfor additional disclosures regarding credit risk, including from related parties.

risk.

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Item 8.    Financial Statements and Supplementary Data
Our consolidated financial statements and supplementary financial data are included in this Annual Report beginning on page F-1.
Item 9.    Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
We had no changes in, and no disagreements with, our accountants on accounting and financial disclosure.
Item 9A.    Controls and Procedures
Evaluation of Disclosure Controls and Procedures.    As required by Rule 13a-15(b) of the Exchange Act, we have evaluated, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Annual Report. Our disclosure controls and procedures are designed to provide reasonable assurance that the information required to be disclosed by us in reports that we file under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure and is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC. Based upon the evaluation, our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures were effective at December 31, 2012 at the reasonable assurance level.
Changes in Internal Control over Financial Reporting.    There have been no changes in our internal controls over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that occurred during our last fiscal quarter that have materially affected or are reasonably likely to materially affect our internal controls over financial reporting.

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MANAGEMENT’SMANAGEMENT'S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

The management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting. The Company’sCompany's internal control over financial reporting is a process designed under the supervision of the Company’sCompany's Chief Executive Officer and Chief Financial Officer to provide reasonable assurance regarding the reliability of financial reporting and the preparation of the Company’sCompany's financial statements for external purposes in accordance with generally accepted accounting principles.

As of December 31, 2012,2015, management assessed the effectiveness of the Company’sCompany's internal control over financial reporting based on the criteria for effective internal control over financial reporting established in “Internalthe 2013 "Internal Control - Integrated Framework," issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this assessment and those criteria, management determined that the Company maintained effective internal control over financial reporting atas of December 31, 2012.2015.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
    
Grant Thornton LLP, the independent registered public accounting firm that audited the consolidated financial statements of the Company included in this Annual Report on Form 10-K, has issued their report on the effectiveness of the Company’sCompany's internal control over financial reporting atas of December 31, 2012.2015. The report, which expresses an unqualified opinion on the effectiveness of the Company’sCompany's internal control over financial reporting atas of December 31, 2012,2015, is included in this Item under the heading “Report"Report of Independent Registered Public Accounting Firm."

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Stockholders
Laredo Petroleum, Holdings, Inc.
We have audited the internal control over financial reporting of Laredo Petroleum, Holdings, Inc. (a Delaware corporation) and subsidiaries (the “Company”"Company") as of December 31, 2012,2015, based on criteria established in the 2013 Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Report on Internal Control Overover Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit.
We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2012,2015, based on criteria established in the 2013 Internal Control-Integrated Framework issued by COSO.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements of the Company as of and for the year ended December 31, 2012,2015, and our report dated March 12, 2013February 17, 2016 expressed an unqualified opinion on those financial statements.
/s/ GRANT THORNTON LLP
Tulsa, Oklahoma
March 12, 2013February 17, 2016


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Item 9.    Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
We had no changes in, and no disagreements with, our accountants on accounting and financial disclosure.
Item 9A.    Controls and Procedures
Evaluation of Disclosure Controls and Procedures.    As required by Rule 13a-15(b) of the Exchange Act, we have evaluated, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Annual Report. Our disclosure controls and procedures are designed to provide reasonable assurance that the information required to be disclosed by us in reports that we file under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure and is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC. Based upon the evaluation, our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures were effective as of December 31, 2015 at the reasonable assurance level.
Design and Evaluation of Internal Control Over Financial Reporting. Pursuant to Section 404 of the Sarbanes-Oxley Act of 2002, our management has included a report of their assessment of the design and effectiveness of our internal controls over financial reporting as part of this Annual Report for the fiscal year ended December 31, 2015. Grant Thornton LLP, the Company's independent registered public accounting firm, has issued an attestation report on the effectiveness of the Company's internal control over financial reporting. Management’s report and the independent registered public accounting firm's attestation report are included in "Item 8. Financial Statements and Supplementary Data" in this Annual Report under the caption entitled "Management’s Report on Internal Control Over Financial Reporting" and "Report of Independent Registered Public Accounting Firm," respectively, and are incorporated herein by reference.
Changes in Internal Control over Financial Reporting.    There have been no changes in our internal controls over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that occurred during our last fiscal quarter that have materially affected or are reasonably likely to materially affect our internal controls over financial reporting.
Item 9B.    Other Information
None.Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On February 10, 2016, the Company's board of directors approved and adopted the second amended and restated bylaws of the Company (as amended and restated, the "Second A&R Bylaws"). The Second A&R Bylaws became effective immediately upon approval and adoption by the Company's board of directors on February 10, 2016. Pursuant to the Second A&R Bylaws, Article IV, Section 6 (the "Amended Provision") of the Company's amended and restated bylaws was amended to provide that "one senior vice president may be designated by the board of directors to perform the duties and exercise the powers of the president in the event of the president's absence or disability." Prior to the adoption of the Second A&R Bylaws, the Amended Provision provided that "one senior vice president shall be designated by the board of directors to perform the duties and exercise the powers of the president in the event of the president's absence or disability."
The foregoing description of the Second A&R Bylaws is a summary only and is qualified in its entirety by reference to the complete text of the Second A&R Bylaws, a copy of which is attached as Exhibit 3.3 to this Annual Report and incorporated herein by reference.


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Part III

Item 10.    Directors, Executive Officers and Corporate Governance
Information regarding our Code of Conduct and Business Ethics, Code of Ethics For Senior Financial Officers and Corporate Governance Guidelines for our principal executive officer and principal financial and accounting officer are described in "Item 1. Business" in this Annual Report on Form 10-K.Report. Pursuant to paragraph 3 of General Instruction G to Form 10-K, we incorporate by reference into this Item 10 the information to be disclosed in our definitive proxy statement, which is to be filed pursuant to Regulation 14A with the SEC within 120 days after the close of the year ended December 31, 2012.2015.
Item 11.    Executive Compensation
Pursuant to paragraph 3 of General Instruction G to Form 10-K, we incorporate by reference into this Item 11 the information to be disclosed in our definitive proxy statement, which is to be filed pursuant to Regulation 14A with the SEC within 120 days after the close of the year ended December 31, 2012.2015.
Item 12.    Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Pursuant to paragraph 3 of General Instruction G to Form 10-K, we incorporate by reference into this Item 12 the information to be disclosed in our definitive proxy statement, which is to be filed pursuant to Regulation 14A with the SEC within 120 days after the close of the year ended December 31, 2012.2015.
Item 13.    Certain Relationships and Related Transactions, and Director Independence
Pursuant to paragraph 3 of General Instruction G to Form 10-K, we incorporate by reference into this Item 13 the information to be disclosed in our definitive proxy statement, which is to be filed pursuant to Regulation 14A with the SEC within 120 days after the close of the year ended December 31, 2012.2015.
Item 14.    Principal Accounting Fees and Services
Pursuant to paragraph 3 of General Instruction G to Form 10-K, we incorporate by reference into this Item 14 the information to be disclosed in our definitive proxy statement, which is to be filed pursuant to Regulation 14A with the SEC within 120 days after the close of the year ended December 31, 2012.2015.

7690



Part IV

Item 15.    Exhibits, Financial Statement Schedules
(a)(1)  Financial Statements
Our consolidated financial statements are included under Part II, Item 8 of this Annual Report. For a listing of these statements and accompanying footnotes, see "Index to Consolidated Financial Statements" on page F-1 of this Annual Report.

(a)(2)  Financial Statement Schedules
All schedules have been omitted because they are either not applicable, not required or the information called for therein appears in the consolidated financial statements or notes thereto.

(a)(3)  Exhibits
Exhibit Number Description
2.1
 Agreement and Plan of Merger by and between Laredo Petroleum, LLC and Laredo Petroleum Holdings, Inc., dated as of December 19, 2011 (incorporated by reference to Exhibit 2.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on December 22, 2011).
   
3.1
 Amended and Restated Certificate of Incorporation of Laredo Petroleum Holdings, Inc. (incorporated by reference to Exhibit 3.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on December 22, 2011).
   
3.2
 AmendedCertificate of Ownership and Restated BylawsMerger, dated as of Laredo Petroleum Holdings, Inc.December 30, 2013 (incorporated by reference to Exhibit 3.23.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on December 22, 2011)January 6, 2014).
3.3*
Second Amended and Restated Bylaws of Laredo Petroleum, Inc.
   
4.1
 Form of Common Stock Certificate (incorporated by reference to Exhibit 4.1 of Laredo's Registration Statement on Form S-1/8-A12B/A (File No. 333-176439)001-35380) filed on November 14, 2011)January 7, 2014).
   
4.2
 Amended and Restated Indenture, dated as of January 20, 2011,June 24, 2014, among Laredo Petroleum, Inc., the several guarantors named therein,Laredo Midstream Services, LLC and Wells Fargo Bank, National Association, as trustee.trustee (incorporated by reference to Exhibit 4.2 of Laredo's Registration StatementQuarterly Report on Form S-110-Q (File No. 333-176439)001-35380) filed on August 24, 2011)7, 2014).
   
4.3
 Sixth Supplemental Indenture, dated as of July 20, 2011,December 3, 2014, among Laredo Petroleum, Inc., Garden City Minerals, LLC, Laredo Petroleum—Dallas, Inc., the guarantors listed on Schedule A theretoMidstream Services, LLC and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.3 of Laredo's Registration StatementLaredo’s Annual Report on Form S-110-K (File No. 333-176439)001-35380) filed on August 24, 2011)February 26, 2015).
   
4.4
Second Supplemental Indenture, dated as of December 19, 2011, among Laredo Petroleum, Inc., Laredo Petroleum Holdings, Inc., the guarantors listed on Schedule A thereto and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 10.2 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on December 22, 2011).
4.5
Third Supplemental Indenture, dated as of December 19, 2011, among Laredo Petroleum, Inc., Laredo Petroleum Holdings, Inc., the guarantors listed on Schedule A thereto and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 10.3 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on December 22, 2011).
4.6
 Indenture, dated as of April 27, 2012, among Laredo Petroleum, Inc., the several guarantors named therein and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on April 30, 2012).
   
4.74.5
 Second Supplemental Indenture, dated as of April 27, 2012,December 31, 2013, among Laredo Petroleum Holdings, Inc., the several guarantors named thereinLaredo Petroleum, Inc., Laredo Midstream Services, LLC and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.2 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on April 30, 2012)January 6, 2014).
4.6
Amended and Restated Supplemental Indenture, dated as of June 24, 2014, among Laredo Petroleum, Inc., Laredo Midstream Services, LLC and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.3 of Laredo's Quarterly Report on Form 10-Q (File No. 001-35380) filed on August 7, 2014).


7791



Exhibit Number Description
4.7
Fourth Supplemental Indenture, dated as of December 3, 2014, among Laredo Petroleum, Inc., Garden City Minerals, LLC, Laredo Midstream Services, LLC and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.7 of Laredo’s Annual Report on Form 10-K (File No. 001-35380) filed on February 26, 2015).
4.8
Indenture, dated as of January 23, 2014, among Laredo Petroleum, Inc., Laredo Midstream Services, LLC and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on January 24, 2014).
4.9
First Supplemental Indenture, dated as of December 3, 2014, among Laredo Petroleum, Inc., Garden City Minerals, LLC, Laredo Midstream Services, LLC and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.9 of Laredo’s Annual Report on Form 10-K (File No. 001-35380) filed on February 26, 2015).
4.10
Indenture, dated as of March 18, 2015, among Laredo Petroleum, Inc., Laredo Midstream Services, LLC, Garden City Minerals, LLC and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.1 of Laredo’s Current Report on Form 8-K (File No. 001-35380) filed on March 24, 2015).
4.11
First Supplemental Indenture, dated as of March 18, 2015, among Laredo Petroleum, Inc., Laredo Midstream Services, LLC, Garden City Minerals, LLC and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.2 of Laredo’s Current Report on Form 8-K (File No. 001-35380) filed on March 24, 2015).
10.1
 ThirdFourth Amended and Restated Credit Agreement, dated as of July 1, 2011,December 31, 2013, among Laredo Petroleum, Inc., as borrower, Wells Fargo Bank, N.A., as Administrative Agent, Bank of America, N.A. and JPMorgan Chase Bank, N.A., as Co-Syndication Agents, Societe Generale, Union Bank, N.A. and BMO Harris Financing, Inc., as Co-Documentation Agents, Wells Fargo Securities, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and J.P. Morgan Securities LLC, as Joint Lead Arrangers and the financial institutions listed on Schedule I thereto (incorporated by reference to Exhibit 10.1 of Laredo's Registration Statement on Form S-1 (File No. 333-176439) filed on August 24, 2011).
10.2
First Amendment to Third Amended and Restated Credit Agreement, dated as of October 11, 2011, among Laredo Petroleum, Inc., each of the guarantors thereto, each of the banks signatories thereto, and Wells Fargo Bank, N.A.,National Association, as administrative agent, (incorporated by reference to Exhibit 10.4 of Laredo's Registration Statement on Form S-1A (File No. 333-176439) filed on November 14, 2011).
10.3
Limited Consent and Second Amendment to Third Amended and Restated Credit Agreement, dated as of November 23, 2011, among Laredo Petroleum, Inc., Wells Fargo Bank, N.A., as administrative agent, the guarantors signatories thereto and the banks signatoriesother financial institutions signatory thereto (incorporated by reference to Exhibit 10.3 of Laredo's Registration Statement on From S-4/A (File No. 333-173984-05) filed on December 12, 2011).
10.4
Third Amendment to Third Amended and Restated Credit Agreement, dated as of April 24, 2012, among Laredo Petroleum, Inc., each of the guarantors thereto, each of the banks signatories thereto, and Wells Fargo Bank, N.A., as administrative agent (incorporated by reference to Exhibit 10.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on April 25, 2012)January 6, 2014).
10.5
10.2
 FourthFirst Amendment to ThirdFourth Amended and Restated Credit Agreement, dated as of April 27, 2012,January 31, 2014, among Laredo Petroleum, Inc., each of the guarantors thereto, each of the banks signatories thereto, and Wells Fargo Bank, N.A., as administrative agent, Laredo Midstream Services, LLC and the banks signatory thereto (incorporated by reference to Exhibit 10.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on AprilFebruary 4, 2014).
10.3
Second Amendment to Fourth Amended and Restated Credit Agreement, dated as of May 8, 2014, among Laredo Petroleum, Inc., Wells Fargo Bank, N.A., as administrative agent, Laredo Midstream Services, LLC and the banks signatory thereto (incorporated by reference to Exhibit 10.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on May 8, 2014).
10.4
Third Amendment to Fourth Amended and Restated Credit Agreement, dated as of May 4, 2015, among Laredo Petroleum, Inc., Wells Fargo Bank, N.A., as administrative agent, Laredo Midstream Services, LLC, Garden City Minerals, LLC and the banks signatory thereto (incorporated by reference to Exhibit 10.3 of Laredo’s Quarterly Report on Form 10-Q (File No. 001-35380) filed on May 7, 2015).

10.5
Fourth Amendment to Fourth Amended and Restated Credit Agreement, dated as of October 30, 2012)2015, among Laredo Petroleum, Inc., Wells Fargo Bank, N.A., as administrative agent, Laredo Midstream Services, LLC, Garden City Minerals, LLC and the banks signatory thereto (incorporated by reference to Exhibit 10.1 of Laredo’s Quarterly Report on Form 10-Q (File No. 001-35380) filed on November 5, 2015).
10.6
 ContributionWaiver Letter to Fourth Amended and Restated Credit Agreement, dated as of June 15, 2011, by andMarch 3, 2015, among Broad Oak Energy, Inc., Warburg Pincus Private Equity IX, L.P., the other persons listed as Contributors on the signature pages thereto and Laredo Petroleum, LLCInc., as borrower, Wells Fargo Bank, National Association, as administrative agent, and the banks signatory thereto (incorporated by reference to Exhibit 10.210.1 of Laredo's Registration StatementCurrent Report on Form S-18-K (File No. 333-176439)001-35380) filed on August 24, 2011)March 4, 2015).
   
10.7
Stock Purchase and Sale Agreement, dated as of June 15, 2011, by and among Laredo Petroleum, Inc. and the individuals listed as Sellers on the signature pages thereto (incorporated by reference to Exhibit 10.3 of Laredo's Registration Statement on Form S-1 (File No. 333-176439) filed on August 24, 2011).
10.8
 Form of Registration Rights Agreement dated December 20, 2011 among Laredo Petroleum Holdings, Inc. and the signatories thereto (incorporated by reference to Exhibit 10.5 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on December 22, 2011).
   
10.9#10.8#
 Form of Indemnification Agreement between Laredo Petroleum Holdings, Inc. and each of the officers and directors thereof (incorporated by reference to Exhibit 10.6 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on December 22, 2011).
10.10#10.9#
 Laredo Petroleum Holdings, Inc. 2011 Omnibus Equity Incentive Plan (incorporated by reference to Exhibit 10.4 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on December 22, 2011).
   
10.11#10.10#
 Form of Restricted Stock Agreement (incorporated by reference to Exhibit 10.1 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on February 9, 2012).
10.12#
10.11#
 Form of Restricted Stock Agreement (incorporated by reference to Exhibit 10.3 of Laredo's Quarterly Report on Form 10-Q (File No. 001-35380) filed on August 9, 2012).

92



Exhibit Number Description
10.13#10.12#
 Form of Stock Option Agreement (incorporated by reference to Exhibit 10.2 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on February 9, 2012).
   
10.14#10.13#
 Form of Performance Compensation Award Agreement (incorporated by reference to Exhibit 10.3 of Laredo's Current Report on Form 8-K (File No. 001-35380) filed on February 9, 2012).
   
10.1510.14*
 Laredo Petroleum, Holdings, Inc. Change in Control Executive Severance Plan, Certificate (incorporated by reference to Exhibit 10.7 of Laredo's Registration Statement on Form S-1/A (File No. 333-176439) filed on Novemberas amended June 21, 2015 and December 14, 2011).2015.
   
10.16#*10.15#
 Form of 2013 Performance Compensation Award Agreement.Agreement (incorporated by reference to Exhibit 10.16 of Laredo's Annual Report on Form 10-K (File No. 001-35380) filed on March 12, 2013).
   
10.17*10.16
 Non-Exclusive Aircraft Lease Agreement, dated January 1, 20132015 between Lariat Ranch, LLC and Laredo Petroleum, Inc. (incorporated by reference to Exhibit 10.14 of Laredo’s Annual Report on Form 10-K (File No. 001-35380) filed on February 26, 2015).
   
21.1*
 List of Subsidiaries of Laredo Petroleum, Holdings, Inc.

78



Exhibit Number Description
23.1*
 Consent of Grant Thornton LLP.
   
23.2*
 Consent of Ryder Scott Company, L.P.
   
31.1*
 Certification of Chief Executive Officer Pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934.
   
31.2*
 Certification of Chief Financial Officer Pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934.
   
32.1**
 Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18. U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
   
99.1*
 Summary Report of Ryder Scott Company, L.P.
   
101.INS*
 XBRL Instance Document.
   
101.CAL*
 XBRL Schema Document.
   
101.SCH*
 XBRL Calculation Linkbase Document.
   
101.DEF*
 XBRL Definition Linkbase Document.
   
101.LAB*
 XBRL Labels Linkbase Document.
   
101.PRE*
 XBRL Presentation Linkbase Document.

* Filed herewith.
** Furnished herewith.
# Management contract or compensatory plan or arrangement.


7993



SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
  LAREDO PETROLEUM, HOLDINGS INC.
Date: March 12, 2013February 17, 2016 By: /s/ RANDYRandy A. FOUTCHFoutch
    
Randy A. Foutch
 Chief Executive Officer
KNOWN ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Randy A. Foutch, Richard C. Buterbaugh, and Kenneth E. Dornblaser and Michael T. Beyer, each of whom may act without joinder of the other, as their true and lawful attorneys-in-fact and agents, each with full power of substitution and resubstitution, for such person and in his or her name, place and stead, in any and all capacities, to sign any and all amendments to this Annual Report on Form 10-K, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
Signatures Title Date
/s/ RANDYRandy A. FOUTCHFoutch 
Chairman and Chief Executive Officer
(principal executive officer)
 March 12, 20132/17/2016
Randy A. Foutch 
/s/ RICHARDRichard C. BUTERBAUGHButerbaugh 
Executive Vice President and Chief
Financial Officer (principal financial
and accounting officer)
March 12, 20132/17/2016
Richard C. Buterbaugh 
/s/ JERRY R. SCHUYLERMichael T. Beyer 
Director,Vice President - Controller and Chief
Operating Accounting Officer
(principal accounting officer)
March 12, 20132/17/2016
Jerry R. SchuylerMichael T. Beyer 
/s/ PETERPeter R. KAGANKagan DirectorMarch 12, 20132/17/2016
Peter R. Kagan 
/s/ JAMESJames R. LEVYLevy DirectorMarch 12, 20132/17/2016
James R. Levy 
/s/ B.Z. (BILL) PARKER(Bill) Parker DirectorMarch 12, 20132/17/2016
B.Z. (Bill) Parker 
/s/ PAMELAPamela S. PIERCEPierce DirectorMarch 12, 20132/17/2016
Pamela S. Pierce 
/s/ AMBASSADOR FRANCIS ROONEYAmbassador Francis Rooney DirectorMarch 12, 20132/17/2016
Ambassador Francis Rooney 
/s/ DR. MYLESDr. Myles W. SCOGGINSScoggins DirectorMarch 12, 20132/17/2016
Dr. Myles W. Scoggins 
/s/ EDMUNDEdmund P. SEGNER,Segner III DirectorMarch 12, 20132/17/2016
Edmund P. Segner, III 
/s/ DONALDDonald D. WOLFWolf DirectorMarch 12, 20132/17/2016
Donald D. Wolf 

8094



INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 Page
Consolidated Financial Statements of Laredo Petroleum, Holdings, Inc.: 

F-1



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Stockholders
Laredo Petroleum, Holdings, Inc.
We have audited the accompanying consolidated balance sheets of Laredo Petroleum, Holdings, Inc. (a Delaware corporation) and subsidiaries (the “Company”"Company") as of December 31, 20122015 and 2011,2014, and the related consolidated statements of operations, stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2012.2015. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Laredo Petroleum, Holdings, Inc. and subsidiariesas of December 31, 20122015 and 2011,2014, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2012,2015 in conformity with accounting principles generally accepted in the United States of America.
As discussed in Note 14 to the consolidated financial statements, the Company has changed its method of presentation for deferred income taxes in 2015 and 2014 due to the adoption of FASB Accounting Standards Update No. 2015-17 – Balance Sheet Classification of Deferred Taxes. Additionally, as discussed in Note 14 to the consolidated financial statements, the Company has changed its method of presentation for debt issuance costs in 2015 and 2014 due to the adoption of FASB Accounting Standards Update No. 2015-03 – Simplifying the Presentation of Debt Issuance Costs.
We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company's internal control over financial reporting as of December 31, 2012,2015, based on criteria established in the 2013 Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), and our report dated March 12, 2013,February 17, 2016, expressed an unqualified opinion thereon.opinion.
/s/ GRANT THORNTON LLP
Tulsa, Oklahoma
March 12, 2013February 17, 2016


F-2



Laredo Petroleum, Holdings, Inc.
Consolidated balance sheets
(in thousands, except share data)
December 31,December 31,
2012 20112015 2014
Assets      
Current assets:      
Cash and cash equivalents$33,224
 $28,002
$31,154
 $29,321
Accounts receivable, net83,840
 74,135
87,699
 126,929
Derivative financial instruments4,644
 13,281
Deferred income taxes12,713
 5,202
Derivatives198,805
 194,601
Other current assets3,016
 2,318
14,574
 14,402
Total current assets137,437
 122,938
332,232
 365,253
Property and equipment:      
Oil and natural gas properties, full cost method:      
Proved properties2,993,266
 2,083,015
Unproved properties not being amortized159,946
 117,195
Pipeline and gas gathering assets74,877
 58,136
Other fixed assets25,599
 16,948
3,253,688
 2,275,294
Less accumulated depreciation, depletion, amortization and impairment1,139,797
 896,785
Net property and equipment2,113,891
 1,378,509
Deferred income taxes49,916
 90,376
Derivative financial instruments2,058
 6,510
Deferred loan costs, net29,444
 23,457
Evaluated properties5,103,635
 4,446,781
Unevaluated properties not being depleted140,299
 342,731
Less accumulated depletion and impairment(4,218,942) (1,586,237)
Oil and natural gas properties, net1,024,992
 3,203,275
Midstream service assets, net131,725
 108,462
Other fixed assets, net43,538
 42,345
Property and equipment, net1,200,255
 3,354,082
Derivatives77,443
 117,788
Investment in equity method investee192,524
 58,288
Other assets, net5,558
 5,862
10,833
 15,290
Total assets$2,338,304
 $1,627,652
$1,813,287
 $3,910,701
Liabilities and stockholders' equity      
Current liabilities:      
Accounts payable$48,672
 $46,007
$14,181
 $39,008
Undistributed revenue and royalties36,065
 26,844
34,540
 65,438
Accrued capital expenditures121,612
 91,022
61,872
 148,241
Accrued compensation and benefits10,318
 11,270
Derivative financial instruments1,325
 4,187
Accrued interest payable26,106
 20,112
Derivatives
 115
Other current liabilities17,970
 14,919
106,222
 101,032
Total current liabilities262,068
 214,361
216,815
 353,834
Long-term debt1,216,760
 636,961
Derivative financial instruments3,260
 2,415
Long-term debt, net1,416,226
 1,779,447
Deferred income taxes, net
 176,945
Asset retirement obligations21,120
 12,568
44,759
 31,042
Other noncurrent liabilities3,373
 1,334
4,040
 6,232
Total liabilities1,506,581
 867,639
1,681,840
 2,347,500
Commitments and contingencies
 
Stockholders' equity:      
Preferred stock, $0.01 par value, 50,000,000 shares authorized and zero issued at December 31, 2012 and 2011
 
Common stock, $0.01 par value, 450,000,000 shares authorized, and 128,298,559 and 127,617,391 issued, net of treasury, at December 31, 2012 and 2011, respectively1,283
 1,276
Preferred stock, $0.01 par value, 50,000,000 shares authorized and zero issued at December 31, 2015 and 2014
 
Common stock, $0.01 par value, 450,000,000 shares authorized, and 213,808,003 and 143,686,491 issued, at December 31, 2015 and 2014, respectively2,138
 1,437
Additional paid-in capital961,424
 951,375
2,086,652
 1,309,171
Accumulated deficit(130,980) (192,634)
Treasury stock, at cost, 7,609 common shares at December 31, 2012 and 2011(4) (4)
(Accumulated deficit) retained earnings(1,957,343) 252,593
Total stockholders' equity831,723
 760,013
131,447
 1,563,201
Total liabilities and stockholders' equity$2,338,304
 $1,627,652
$1,813,287
 $3,910,701

The accompanying notes are an integral part of these consolidated financial statements.

F-3



Laredo Petroleum, Holdings, Inc.
Consolidated statements of operations
(in thousands, except per share data)
 For the years ended December 31,
 2012 2011 2010
Revenues:     
Oil and natural gas sales$583,569
 $506,255
 $239,783
Natural gas transportation and treating4,511
 4,015
 2,217
Total revenues588,080
 510,270
 242,000
Costs and expenses:     
Lease operating expenses67,325
 43,306
 21,684
Production and ad valorem taxes37,637
 31,982
 15,699
Natural gas transportation and treating1,468
 977
 2,501
Drilling and production2,915
 3,817
 340
General and administrative (including non-cash stock-based compensation of $10,056, $6,111 and $1,257 for the years ended December 31, 2012, 2011 and 2010, respectively)62,106
 51,064
 30,908
Accretion of asset retirement obligations1,200
 616
 475
Depreciation, depletion and amortization243,649
 176,366
 97,411
Impairment expense
 243
 
Total costs and expenses416,300
 308,371
 169,018
Operating income171,780
 201,899
 72,982
Non-operating income (expense):     
Realized and unrealized gain (loss):     
Commodity derivative financial instruments, net8,800
 21,047
 11,190
Interest rate derivatives, net(412) (1,311) (5,375)
Interest expense(85,572) (50,580) (18,482)
Interest and other income59
 108
 151
Write-off of deferred loan costs
 (6,195) 
Loss on disposal of assets(52) (40) (30)
Non-operating expense, net(77,177) (36,971) (12,546)
Income before income taxes94,603
 164,928
 60,436
Income tax (expense) benefit:     
Deferred(32,949) (59,374) 25,812
Total income tax (expense) benefit(32,949) (59,374) 25,812
Net income$61,654
 $105,554
 $86,248
Net income per common share (Note K):     
Basic$0.49
 $0.98
 

Diluted$0.48
 $0.98
 

Weighted average common shares outstanding (Note K):     
Basic126,957
 107,187
 

Diluted128,171
 108,099
 

 For the years ended December 31,
 2015 2014 2013
Revenues:     
Oil, NGL and natural gas sales$431,734
 $737,203
 $664,844
Midstream service revenues6,548
 2,245
 413
Sales of purchased oil168,358

54,437
 
Total revenues606,640
 793,885
 665,257
Costs and expenses:     
Lease operating expenses108,341
 96,503
 79,136
Production and ad valorem taxes32,892
 50,312
 42,396
Midstream service expenses5,846

5,429
 3,368
Minimum volume commitments5,235

2,552
 891
Costs of purchased oil174,338

53,967
 
Drilling rig fees

527
 
General and administrative90,425

106,044
 89,696
Restructuring expenses6,042
 
 
Accretion of asset retirement obligations2,423

1,787
 1,475
Depletion, depreciation and amortization277,724

246,474
 233,944
Impairment expense2,374,888

3,904
 
Total costs and expenses3,078,154
 567,499
 450,906
Operating income (loss)(2,471,514) 226,386
 214,351
Non-operating income (expense):     
Gain (loss) on derivatives:     
Commodity derivatives, net214,291
 327,920
 79,902
Interest rate derivatives, net
 
 (24)
Income (loss) from equity method investee6,799
 (192) 29
Interest expense(103,219) (121,173) (100,327)
Interest and other income426
 294
 163
Loss on early redemption of debt(31,537) 
 
Write-off of debt issuance costs
 (124) (1,502)
Loss on disposal of assets, net(2,127) (3,252) (1,508)
Non-operating income (expense), net84,633
 203,473
 (23,267)
Income (loss) from continuing operations before income taxes(2,386,881) 429,859
 191,084
Income tax benefit (expense):     
Deferred176,945
 (164,286) (74,507)
Total income tax benefit (expense)176,945
 (164,286) (74,507)
Income (loss) from continuing operations(2,209,936) 265,573
 116,577
Income from discontinued operations, net of tax
 
 1,423
Net income (loss)$(2,209,936) $265,573
 $118,000
Net income (loss) per common share:     
Basic:     
Income (loss) from continuing operations$(11.10) $1.88
 $0.88
Income from discontinued operations, net of tax
 
 0.01
Net income (loss) per share$(11.10) $1.88
 $0.89
Diluted:     
Income (loss) from continuing operations$(11.10) $1.85
 $0.87
Income from discontinued operations, net of tax
 
 0.01
Net income (loss) per share$(11.10) $1.85
 $0.88
Weighted-average common shares outstanding:     
Basic199,158
 141,312
 132,490
Diluted199,158
 143,554
 134,378

The accompanying notes are an integral part of these consolidated financial statements.


F-4



Laredo Petroleum, Holdings, Inc.
Consolidated statements of stockholders' equity
(in thousands)
 Series A BOE Preferred Restricted Units Treasury Units Common Stock Additional
paid-in
capital
 Treasury Stock (at cost) Other
equity
interests
 Accumulated
deficit
 Total
 Units Amount Units Amount Units Amount  Shares Amount Shares Amount 
Balance, December 31, 200995,952
 $524,700
 
 $
 26,959
 $3,273
 
 
 $
 $
 
 $
 $145,570
 $(384,436) $289,107
Issuance of equity interests4,000
 25,000
 
 
 
 
 
 
 
 
 
 
 10,000
 
 35,000
Purchase of equity interests
 
 
 
 
 
 (513) 
 
 
 
 
 
 
 (513)
Cancellation of Series A Units(82) (513) 
 
 
 
 513
 
 
 
 
 
 
 
 
Stock-based compensation
 
 
 
 6,286
 1,231
 
 
 
 
 
 
 26
 
 1,257
Cancellation of restricted units
 
 
 
 (1,813) 
 
 
 
 
 
 
 
 
 
Net income
 
 
 
 
 
 
 
 
 
 
 
 
 86,248
 86,248
Balance, December 31, 201099,870
 549,187
 
 
 31,432
 4,504
 
 
 
 
 
 
 155,596
 (298,188) 411,099
Purchase of equity interests
 
 
 
 
 
 (125) 
 
 
 
 
 
 
 (125)
Cancellation of Series A Units(20) (125) 
 
 
 
 125
 
 
 
 
 
 
 
 
Stock-based compensation
 
 
 
 9,859
 5,829
 
 
 
 
 
 
 132
 
 5,961
Purchase of restricted units
 
 
 
 
 
 (38) 
 
 
 
 
 
 
 (38)
Cancellation of restricted units
 
 
 
 (1,389) (37) 38
 
 
 
 
 
 
 
 1
Broad Oak Transaction
 
 88,986
 73,765
 
 
 
 
 
 
 
 
 (155,728) 
 (81,963)
Common shares issued upon Corporate Reorganization(99,850) (549,062) (88,986) (73,765) (39,902) (10,296) 
 107,500
 1,075
 632,048
 
 
 
 
 
Common shares issued at initial public offering, net of offering costs
 
 
 
 
 
 
 20,125
 201
 319,177
 
 
 
 
 319,378
Stock-based compensation
 
 
 
 
 
 
 
 
 150
 
 
 
 
 150
Shares repurchased
 
 
 
 
 
 
 (8) 
 
 8
 (4) 
 
 (4)
Net income
 
 
 
 
 
 
 
 
 
 
 
 
 105,554
 105,554
Balance, December 31, 2011
 
 
 
 
 
 
 127,617
 1,276
 951,375
 8
 (4) 
 (192,634) 760,013
Restricted stock awards
 
 
 
 
 
 
 932
 9
 (9) 
 
 
 
 
Restricted stock forfeitures
 
 
 
 
 
 
 (251) (2) 2
 
 
 
 
 
Stock-based compensation
 
 
 
 
 
 
 
 
 10,056
 
 
 
 
 10,056
Net income
 
 
 
 
 
 
 
 
 
 
 
 
 61,654
 61,654
Balance, December 31, 2012
 $
 
 $
 
 $
 
 128,298
 $1,283
 $961,424
 8
 $(4) $
 $(130,980) $831,723
 Common Stock Additional
paid-in
capital
 Treasury Stock
(at cost)
 (Accumulated deficit) retained earnings Total
 Shares Amount Shares Amount 
Balance, December 31, 2012128,298
 $1,283
 $961,424
 8
 $(4) $(130,980) $831,723
Restricted stock awards1,469
 15
 (15) 
 
 
 
Restricted stock forfeitures(229) (2) 2
 
 
 
 
Vested restricted stock exchanged for tax withholding
 
 
 95
 (2,083) 
 (2,083)
Retirement of treasury stock(95) (1) (2,086) (103) 2,087
 
 
Exercise of employee stock options104
 1
 2,049
 
 
 
 2,050
Equity issuance, net of offering costs13,000
 130
 297,974
 
 
 
 298,104
Equity issued for acquisition, net of offering costs124
 1
 3,028
 
 
 
 3,029
Stock-based compensation
 
 21,433
 
 
 
 21,433
Net income
 
 
 
 
 118,000
 118,000
Balance, December 31, 2013142,671
 1,427
 1,283,809
 
 
 (12,980) 1,272,256
Restricted stock awards1,234
 12
 (12) 
 
 
 
Restricted stock forfeitures(148) (1) 1
 
 
 
 
Vested restricted stock exchanged for tax withholding
 
 
 166
 (4,242) 
 (4,242)
Retirement of treasury stock(166) (2) (4,240) (166) 4,242
 
 
Exercise of employee stock options95
 1
 1,884
 
 
 
 1,885
Stock-based compensation
 
 27,729
 
 
 
 27,729
Net income
 
 
 
 
 265,573
 265,573
Balance, December 31, 2014143,686
 1,437
 1,309,171
 
 
 252,593
 1,563,201
Restricted stock awards1,902
 19
 (19) 
 
 
 
Restricted stock forfeitures(553) (6) 6
 
 
 
 
Vested restricted stock exchanged for tax withholding
 
 
 227
 (2,811) 
 (2,811)
Retirement of treasury stock(227) (2) (2,809) (227) 2,811
 
 
Equity issuance, net of offering costs69,000
 690
 753,473
 
 
 
 754,163
Stock-based compensation
 
 26,830
 
 
 
 26,830
Net loss
 
 
 
 
 (2,209,936) (2,209,936)
Balance, December 31, 2015213,808
 $2,138
 $2,086,652
 
 $
 $(1,957,343) $131,447

The accompanying notes are an integral part of these consolidated financial statements.

F-5



Laredo Petroleum, Holdings, Inc.
Consolidated statements of cash flows
(in thousands)
 For the years ended December 31,
 2012 2011 2010
Cash flows from operating activities:     
Net income$61,654
 $105,554
 $86,248
Adjustments to reconcile net income to net cash provided by operating activities:     
Deferred income tax expense (benefit)32,949
 59,374
 (25,812)
Depreciation, depletion and amortization243,649
 176,366
 97,411
Impairment expense
 243
 
Non-cash stock-based compensation10,056
 6,111
 1,257
Accretion of asset retirement obligations1,200
 616
 475
Unrealized loss (gain) on derivative financial instruments, net16,522
 (20,890) 11,648
Premiums paid for derivative financial instruments(6,118) (555) (5,397)
Amortization of premiums paid for derivative financial instruments668
 471
 155
Amortization of deferred loan costs4,816
 3,871
 2,132
Write-off of deferred loan costs
 6,195
 
Amortization of October 2011 Notes premium(202) (39) 
Amortization of other assets19
 19
 19
Loss on disposal of assets52
 40
 30
(Increase) decrease in accounts receivable(9,705) (30,196) (23,299)
(Increase) decrease in other current assets(414) (833) (2,331)
Increase (decrease) in accounts payable2,665
 (3,825) 5,711
Increase (decrease) in undistributed revenues and royalties9,221
 16,180
 735
Increase (decrease) in accrued compensation and benefits(952) 2,492
 5,621
Increase (decrease) in other accrued liabilities8,801
 23,031
 2,457
Increase (decrease) in other noncurrent liabilities98
 (149) (17)
Increase (decrease) in fair value of performance unit awards1,797
 
 
Net cash provided by operating activities376,776
 344,076
 157,043
Cash flows from investing activities:     
Capital expenditures:     
Acquisitions(20,496) 
 
Oil and natural gas properties(895,312) (687,062) (454,161)
Pipeline and gas gathering assets(16,241) (13,368) (4,277)
Other fixed assets(8,755) (6,413) (2,198)
Proceeds from other fixed asset disposals53
 56
 89
Net cash used in investing activities(940,751) (706,787) (460,547)
Cash flows from financing activities:     
Broad Oak transaction
 (81,963) 
Borrowings on revolving credit facilities360,000
 790,100
 250,300
Payments on revolving credit facilities(280,000) (1,096,700) (105,800)
Borrowings on term loan
 
 100,000
Payments on term loan
 (100,000) 
Issuance of 2019 Notes
 552,000
 
Issuance of 2022 Notes500,000
 
 
Proceeds from initial public offering, net
 319,378
 
Proceeds from issuance of equity interests, net
 
 10,000
Purchase of equity interests and units, net
 (164) (513)
Purchase of treasury stock
 (3) 
Capital contributions
 
 75,000
Payments for loan costs(10,803) (23,170) (9,235)
Net cash provided by financing activities569,197
 359,478
 319,752
Net increase (decrease) in cash and cash equivalents5,222
 (3,233) 16,248
Cash and cash equivalents, beginning of period28,002
 31,235
 14,987
Cash and cash equivalents, end of period$33,224
 $28,002
 $31,235
Supplemental disclosure of cash flow information:     
Cash paid during the period:     
Interest, net of $627, zero and zero, respectively, of capitalized interest for the years ended December 31, 2012, 2011, and 2010 respectively$74,638
 $31,157
 $15,223
 For the years ended December 31,
 2015 2014 2013
Cash flows from operating activities:     
Net income (loss)$(2,209,936) $265,573
 $118,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:     
Deferred income tax (benefit) expense(176,945) 164,286
 75,288
Depletion, depreciation and amortization277,724
 246,474
 234,571
Impairment expense2,374,888
 3,904
 
Loss on early redemption of debt31,537
 
 
Bad debt expense255
 342
 653
Non-cash stock-based compensation, net of amounts capitalized24,509
 23,079
 21,433
Accretion of asset retirement obligations2,423
 1,787
 1,475
Mark-to-market on derivatives:     
Gain on derivatives, net(214,291) (327,920) (79,878)
Cash settlements received for matured derivatives, net255,281
 28,241
 3,745
Cash settlements received for early terminations and modification of derivatives, net
 76,660
 6,008
Change in net present value of deferred premiums paid for derivatives203
 220
 462
Cash premiums paid for derivatives(5,167) (7,419) (10,277)
Amortization of debt issuance costs4,727
 5,137
 5,023
Write-off of debt issuance costs
 124
 1,502
Loss on disposal of assets, net2,127
 3,252
 1,508
(Income) loss on equity method investee(6,799) 192
 (29)
Cash settlement of performance unit awards(2,738) 
 (2,080)
Other, net4
 403
 (230)
Decrease (increase) in accounts receivable38,975
 (49,953) 6,825
Increase in other assets(2,309) (16,688) (7,438)
(Decrease) increase in accounts payable(24,827) 23,006
 (32,581)
(Decrease) increase in undistributed revenues and royalties(30,898) 30,314
 (941)
(Decrease) increase in other accrued liabilities(26,996) 23,837
 16,458
Increase in other noncurrent liabilities119
 2,825
 499
Increase in fair value of performance unit awards4,081
 601
 4,733
Net cash provided by operating activities315,947
 498,277
 364,729
Cash flows from investing activities:     
Capital expenditures:     
Acquisitions of oil and natural gas properties
 (6,493) (33,710)
Acquisition of mineral interests
 (7,305) 
Oil and natural gas properties(588,017) (1,251,757) (702,349)
Midstream service assets(35,459) (60,548) (24,409)
Other fixed assets(9,125) (27,444) (16,257)
Investment in equity method investee(99,855) (55,164) (3,287)
Proceeds from dispositions of capital assets, net of costs64,949
 1,750
 450,128
Net cash used in investing activities(667,507) (1,406,961) (329,884)
Cash flows from financing activities:     
Borrowings on Senior Secured Credit Facility310,000
 300,000
 230,000
Payments on Senior Secured Credit Facility(475,000) 
 (395,000)
Issuance of March 2023 Notes350,000
 
 
Issuance of January 2022 Notes
 450,000
 
Redemption of January 2019 Notes(576,200) 
 
Proceeds from issuance of common stock, net of offering costs754,163
 
 298,104
Purchase of treasury stock(2,811) (4,242) (2,083)
Proceeds from exercise of employee stock options
 1,885
 2,050
Payments for debt issuance costs(6,759) (7,791) (2,987)
Net cash provided by financing activities353,393
 739,852
 130,084
Net increase (decrease) in cash and cash equivalents1,833
 (168,832) 164,929
Cash and cash equivalents, beginning of period29,321
 198,153
 33,224
Cash and cash equivalents, end of period$31,154
 $29,321
 $198,153

The accompanying notes are an integral part of these consolidated financial statements.

F-6

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

A—Note 1—Organization
Laredo Petroleum Holdings, Inc. ("Laredo Holdings") together with its subsidiaries,The Company (defined below) is an independent energy company focused on the acquisition, exploration development and acquisitiondevelopment of oil and natural gas properties, and the transportation of oil and natural gas from such properties, primarily in the Permian andBasin in West Texas. On August 1, 2013, the Company sold its properties in the Mid-Continent regionsregion of the United States. States (as further described below).
Laredo Petroleum, Inc. ("Laredo"), formerly known as Laredo Petroleum Holdings, Inc., was incorporatedformed pursuant to the laws of the State of Delaware on August 12, 2011 for purposes of a Corporate Reorganization (as defined(defined below) and the initial public offering of its common stock (the "IPO") on. On December 20, 2011.19, 2011, Laredo Petroleum, LLC ("Laredo LLC"), a Delaware limited liability company, was merged with and into Laredo, with Laredo surviving the merger (the "Corporate Reorganization"). As a holding company, Laredo Holdings'Laredo's management operations arewere conducted through its wholly-owned subsidiary, Laredo Petroleum, Inc. ("Laredo"Laredo Inc."), a Delaware corporation, and Laredo'sLaredo Inc's subsidiaries, Laredo Petroleum Texas, LLC ("Laredo Texas"), a Texas limited liability company, Laredo Gas Services, LLC ("Laredo Gas"), a Delaware limited liability company, and Laredo Petroleum—Dallas, Inc. ("Laredo Dallas"), a Delaware corporation.
On July 1, 2011,Effective December 31, 2013, an internal corporate reorganization was completed, which simplified the corporate structure. Two of Laredo Petroleum,Inc.'s subsidiaries, Laredo Texas and Laredo Dallas, were merged with and into Laredo Inc. The sole remaining wholly-owned subsidiary of Laredo Inc. at the time of the internal corporate reorganization, Laredo Gas, changed its name to Laredo Midstream Services, LLC ("LMS"). Laredo LLC"Inc. merged with and into Laredo with Laredo surviving and changing its name to "Laredo Petroleum, Inc." (the events described in this paragraph collectively, the "Internal Consolidation").
On October 24, 2014, Laredo formed Garden City Minerals, LLC ("GCM"), a Delaware limited liability company, and Laredo completedfor the acquisitionpurpose of Broad Oak Energy, Inc. ("Broad Oak"), a Delaware corporation, for a combination of equity and cash. Prior to the acquisition, Broad Oak washolding its mineral interests. GCM is wholly owned by its managementLaredo. GCM and Warburg Pincus Private Equity IX, L.P. ("Warburg Pincus IX"). On July 19, 2011, Broad Oak's name was changed to Laredo Petroleum—Dallas, Inc.
On December 19, 2011, immediately prior toLMS (together, the IPO, Laredo LLC merged with and into Laredo Holdings, with Laredo Holdings being the surviving entity. Warburg Pincus IX and other affiliates"Guarantors") guarantee all of Warburg Pincus LLC were majority owners of Laredo LLC and are of Laredo Holdings. The preferred units and certain series of restricted units of Laredo LLC were exchanged into shares of common stock of Laredo Holdings based on the pre-offering equity value of such units (the "Corporate Reorganization"). The common stock has one vote per share and a par value of $0.01 per share.
On October 17, 2012, Laredo Holdings completed an underwritten secondary public offering of 14,375,000 shares of its common stock by affiliates of Warburg Pincus LLC, the selling stockholders, at a price of $20.25 per share, which included the additional 1,875,000 shares of common stock that were subject to the underwriters' option to purchase from the selling stockholders. The selling stockholders received all proceeds from this offering. No shares were sold by Laredo Holdings or its management. The Company incurred approximately $0.8 million in costs relating to this secondary public offering pursuant to a registration rights agreement with the selling stockholder.Laredo's debt instruments.
In these notes, the "Company," (i) when used in the present tense, prospectively or from October 24, 2014, refers to Laredo, LMS and GCM collectively; (ii) when used for historical periods sincefrom December 31, 2013 to October 23, 2014, refers to Laredo and LMS collectively; and (iii) when used for historical periods from December 19, 2011 refers to Laredo Holdings, Laredo and its subsidiaries collectively, and for historical periods prior to December 19, 201130, 2013, refers to Laredo LLC, Laredo and its subsidiaries, collectively, unless the context indicates otherwise. All amounts, dollars and percentages presented in these consolidated financial statements and the related notes are rounded and therefore approximate.
B—The Company operates in two business segments, which are (i) exploration and production and (ii) midstream and marketing. The exploration and production segment is engaged in the acquisition, exploration and development of oil and natural gas properties primarily in the Permian Basin in West Texas. The midstream and marketing segment provides Laredo's exploration and production segment and certain third parties with (i) products and services that need to be delivered by midstream infrastructure, including oil and natural gas gathering services as well as rig fuel, natural gas lift and water in and around Laredo's primary production corridors, (ii) water takeaway in and around Laredo's primary production corridors and (iii) oil and natural gas takeaway optionality in the field coupled with firm service commitments to maximize Laredo's oil, natural gas liquids ("NGL") and natural gas revenues.
Note 2—Basis of presentation and significant accounting policies
1.a.    Basis of presentation
The accompanying consolidated financial statements were derived from the historical accounting records of the Company and reflect the historical financial position, results of operations and cash flows for the periods described herein. The Broad Oak acquisition discussed in Note A was accounted for in a manner similar to a pooling of interests. The historical financial statements present the assets and liabilities of Laredo Holdings and subsidiaries and Broad Oak at historical carrying values and their operations as if they were consolidated for all periods presented. All material intercompany transactions and account balances have been eliminated in the consolidation of accounts. The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). All material intercompany transactions and account balances have been eliminated in the consolidation of accounts. Unless otherwise indicated, the information in these notes relates to the Company's continuing operations. The Company operates oil and natural gas properties as one business segment, which explores, develops and produces oil and natural gas.uses the equity method of accounting to record its net interests when the Company holds 20% to 50% of the voting rights and/or has the ability to exercise significant influence but does not control the entity. Under the equity method, the Company's proportionate share of the investee's net income (loss) is included in the consolidated statements of operations. See Note 15 for additional discussion of the Company's equity method investment.
2.b.    Use of estimates in the preparation of consolidated financial statements
The preparation of the accompanying consolidated financial statements in conformity with GAAP requires management of the Company to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements

F-7

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


and the reported amounts of revenues and expenses during the reporting period. Although management believes these estimates are reasonable, actual results could differ from these estimates.differ.
Significant estimates include, but are not limited to, (i) estimates of the Company's reserves of oil, NGL and natural gas, (ii) future cash flows from oil and natural gas properties, (iii) depletion, depreciation depletion and amortization, (iv) asset retirement obligations, (v) stock-based compensation, (vi) deferred income taxes, (vii) fair value of assets acquired and liabilities assumed in an acquisition and (viii) fair values of commodity derivatives, interest rate derivatives and commodity deferred premiums.premiums and performance unit awards. As fair value is a market-based measurement, it is determined based on the assumptions that market

F-7

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

participants would use. These estimates and assumptions are based on management's best judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Such estimates and assumptions are adjusted when facts and circumstances dictate. Illiquid credit markets and volatile equity and energy markets have combined to increase the uncertainty inherent in such estimates and assumptions. Management believes its estimates and assumptions areto be reasonable under the circumstances. As future events and their effects cannot be determined with precision, actual values and results could differ from these estimates. Any changes in estimates resulting from future changes in the economic environment will be reflected in the financial statements in future periods.
3.c.    Reclassifications
Certain amounts in the accompanying consolidated financial statements have been reclassified to conform to the 2015 presentation. These reclassifications had no impact to previously reported net income, stockholders' equity or cash flows. See Notes 7 and 14 for discussion regarding reclassifications related to the Company's early adoption of new guidance related to the classification of income taxes. See Notes 2.k, 5.h and 14 for discussion regarding the Company's early adoption of new guidance related to the presentation of deferred loan costs.
d.    Cash and cash equivalents
The Company defines cash and cash equivalents to include cash on hand, cash in bank accounts and highly liquid investments with original maturities of three months or less. The Company maintains cash and cash equivalents in bank deposit accounts and money market funds that may not be federally insured. The Company has not experienced any losses in such accounts and believes it is not exposed to any significant credit risk on such accounts. The Company defines cash and cash equivalentsSee Note 11 for discussion regarding the Company's exposure to include cash on hand, cash in bank accounts and highly liquid investments with original maturities of three months or less.credit risk.
4.e.    Accounts receivable
The Company sells produced and purchased oil, NGL and natural gas to various customers and participates with other parties in the drilling, completiondevelopment and operation of oil and natural gas wells. Joint interest and oil and natural gas sales receivables related to these operationsproperties. The Company's accounts receivable are generally unsecured. Accounts receivable for joint interest billings are recorded as amounts billed to customers less an allowance for doubtful accounts.
AmountsJoint interest operations amounts are considered past due after 30 days. The Company determines joint interest operations accounts receivable allowances based on management's assessment of the creditworthiness of the joint interest owners andowners. Additionally, as the operator inof the majority of its wells, the Company has the ability to realize the receivables through netting of anticipated future production revenues. The Company maintains an allowance for doubtful accounts for estimated losses inherent in its accounts receivable portfolio. In establishing the required allowance, management considers historical losses, current receivables aging and existing industry and economic data. The Company reviews its allowance for doubtful accounts quarterly. Past due balances over amounts greater than 90 days and over a specified amount are reviewed individually for collectability. Account balances are charged off against the allowance after all means of collection have been exhausted and the potential for recovery is remote.

F-8

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


Accounts receivable consistconsisted of the following components as of December 31:
(in thousands) 2012 2011 2015 2014
Oil and natural gas sales $48,445
 $49,434
Matured derivatives $27,469
 $16,098
Oil, NGL and natural gas sales 25,582
 57,070
Joint operations, net(1)
 30,925
 24,190
 21,375
 33,808
Purchased oil and other product sales 11,775
 18,917
Other 4,470
 511
 1,498
 1,036
Total $83,840
 $74,135
 $87,699
 $126,929

(1)
Accounts receivable for joint operations are presented net of an allowance for doubtful accounts of approximately $0.1$0.2 million at each and $0.8 million as of December 31, 20122015 and 2011.
2014, respectively.
5.    Derivative financial instrumentsf.    Derivatives
The Company uses derivative financial instrumentsderivatives to reduce exposure to fluctuations in the prices of oil and natural gas. By removing a significant portion of the price volatility associated with future production, the Company expects to mitigate, but not to eliminate, the potential effects of variability in cash flows from operations due to fluctuations in commodity prices. These transactions are primarily in the form of collars,puts, swaps, putscollars and basis swaps. In addition, in prior periods the Company entersentered into derivative contracts in the form of interest rate derivatives to minimize the effects of fluctuations in interest rates.derivatives.
Derivative instrumentsDerivatives are recorded at fair value and are includedpresented on a net basis on the consolidated balance sheets as assets or liabilities. The Company nettednets the fair value of derivative instrumentsderivatives by counterparty in the accompanying consolidated balance sheets where the right of offset exists. The Company determines the fair value of its derivative financial instrumentsderivatives by utilizing pricing models for significantlysubstantially similar instruments. Inputs to the pricing models include publicly available prices and forward price curves generated from a compilation of data gathered from third parties. See Note 9 for discussion regarding the fair value of the Company's derivatives. 
The Company's derivatives were not designated as hedges for accounting purposes for any of the periods presented. Accordingly, the changes in fair value are recognized in the consolidated statementstatements of operations in the period of change. Realized and unrealized gainsGains and losses on derivatives are included in cash flows from operating activities (see Note F).

F-8

Laredo Petroleum Holdings, Inc.activities. See Notes 8 and 9 for discussion regarding the Company's commodity derivatives.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

6.    Other current liabilities
Other current liabilities consist of the following components as of December 31:
(in thousands) 2012 2011
Lease operating expense payable $9,766
 $5,297
Prepaid drilling liability 2,916
 2,378
Production taxes payable 2,121
 1,493
Current portion of asset retirement obligations 385
 506
Other accrued liabilities 2,782
 5,245
Total other current liabilities $17,970
 $14,919
7.g.    Oil and natural gas properties
The Company uses the full cost method of accounting for its oil and natural gas properties. Under this method, all acquisition, exploration and development costs, including certain related employee costs, incurred for the purpose of finding oil and natural gas are capitalized and amortized on a composite units of production method based on proved oil, NGL and natural gas reserves. Such amounts include the cost of drilling and equipping productive wells, dry hole costs, lease acquisition costs, delay rentals and other costs related to such activities. Costs, including related employee costs, associated with production and general corporate activities are expensed in the period incurred. Sales of oil and natural gas properties, whether or not being amortized currently, are accounted for as adjustments of capitalized costs, with no gain or loss recognized, unless such adjustments would significantly alter the relationship between capitalized costs and proved reserves of oil, NGL and natural gas.
The Company computes the provision for depletion of oil and natural gas properties using the units of production method based upon production and estimates of proved reserve quantities. Unevaluated costs and related carrying costs are excluded from the amortizationdepletion base until the properties associated with these costs are evaluated. Approximately $159.9$140.3 million and $117.2$342.7 million of such costs were excluded from the amortizationdepletion base atas of December 31, 20122015 and 2011,2014, respectively. The amortizationdepletion base includes estimated future development costs and dismantlement, restoration and abandonment costs, net of estimated salvage values. Total accumulated depletion and impairment for oil and natural gas properties was $1.1$4.2 billion and $884.5 million$1.6 billion for the years ended December 31, 20122015 and 2011,2014, respectively. Depletion expense for oil and natural gas properties was $237.1$263.7 million,, $171.5 $237.1 million and $93.8$228.0 million for the years ended December 31, 2012, 20112015, 2014 and 2010,2013, respectively. There were no impairments recorded for the years ended December 31, 2012, 2011 and 2010. Depletion per barrel of oil equivalent for the Company's oil and natural gas properties was $20.98, $19.82$16.13, $20.21 and $18.00$20.34 for the years ended December 31, 2012, 20112015, 2014 and 2010,2013, respectively.
The Company excludes the costs directly associated with acquisition and evaluation of unprovedunevaluated properties from the depletion calculation until it is determined whether or not proved reserves can be assigned to the properties. The Company capitalizes a portion of its interest costs on its unevaluated properties. Capitalized interest becomes a part of the cost of the unevaluated properties and is subject to depletion when proved reserves can be assigned to the associated properties. All items

F-9

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


classified as unevaluated property are assessed on a quarterly basis for possible impairment or reduction in value. The assessment includes consideration of the following factors, among others: intent to drill, remaining lease term, geological and geophysical evaluations, drilling results and activity, the assignment of provedevaluated reserves and the economic viability of development if proved reserves are assigned. During any period in which these factors indicate an impairment, the cumulative drilling costs incurred to date for such property and all or a portion of the associated leasehold costs are transferred to the full cost pool and are then subject to amortization.depletion.
The full cost ceiling is based principally on the estimated future net cash flowsrevenues from proved oil and natural gas properties discounted at 10%. Full costPer the Securities and Exchange Commission ("SEC") guidelines, companies are required to use the unweighted arithmetic average first-day-of-the-month price for each month within the 12-month period prior to the end of the reporting period unless prices were defined by contractual arrangements,before differentials ("Benchmark Prices"). The Benchmark Prices are then adjusted for quality, transportation fees, geographical differentials, marketing bonuses or deductions and other factors affecting the price received at the wellhead ("Realized Prices"). The Realized Prices are utilized to calculate the discounted future revenues. net revenues in the full cost ceiling calculation.
In the event the unamortized cost of evaluated oil and natural gas properties being amortized exceeds the full cost ceiling, as defined by the Securities and Exchange Commission ("SEC"),SEC, the excess is charged to expense in the period such excess occurs. Once incurred, a write-down of oil and natural gas properties is not reversible.
At December 31, 2012,The following table presents the Benchmark Prices, Realized Prices and the corresponding non-cash full cost ceiling valueimpairments recorded as of the Company's reserves was calculated based on the unweighted arithmetic average first-day-of-the-month priceperiods presented:
  For the quarters ended 
For the years ended(1)
  December 31, 2015 September 30, 2015 June 30, 2015 March 31, 2015 December 31, 2014
December 31, 2013
Benchmark Prices            
   Oil ($/Bbl) $46.79
 $55.73
 $68.17
 $79.21
 $91.48

$93.52
   NGL ($/Bbl) 18.75
 21.87
 26.73
 31.25
 


   Natural gas ($/MMBtu) 2.47
 2.89
 3.22
 3.73
 4.25

3.57
Realized Prices 

       




   Oil ($/Bbl) 45.58
 54.28
 66.68
 77.72
 89.57

92.26
   NGL ($/Bbl) 12.50
 15.25
 19.56
 23.75
 


   Natural gas ($/Mcf) 1.89
 2.30
 2.62
 3.09
 6.39

5.52
Non-cash full cost ceiling impairment (in thousands) $975,011
 $906,420
 $488,046
 $
 $

$

(1)For periods prior to January 1, 2015, the Company presented reserves for oil and natural gas, which combined NGL with the natural gas stream, and did not separately report NGL. This change impacts the comparability of 2015 with prior periods.
Full cost ceiling impairment expense for the 12-monthsyear ended December 31, 20122015 in the consolidated statements of $2.63 per MMBtu for natural gas, adjusted by area for energy content, transportation fees,operations was $2.4 billion. The amount is included in the "Impairment expense" line item in the consolidated statements of operations and regional price differentials, andin the unweighted arithmetic average first-day-of-the-month pricefinancial information provided for the 12-months ended December 31, 2012 of $91.21 per barrel for oil, adjusted by area for energy content, transportation fees,Company's exploration and regional price differentials. Using these prices, the Company's net book valueproduction segment presented in Note 17.
h.    Midstream service assets
Midstream service assets consist of oil and natural gas properties did not exceed the full cost ceiling amount at December 31, 2012. Changes in production rates, levels

F-9

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011pipeline gathering assets, related equipment, oil delivery stations, water storage and 2010

of reserves, future development costs,treatment facilities and other factors will determine the Company's actual full cost ceiling test calculation and impairment analyses in future periods.
At December 31, 2011, the full cost ceiling value of the Company's reserves was calculated based on the unweighted arithmetic average first-day-of-the-month price for the 12-months ended December 31, 2011 of $3.99 per MMBtu for natural gas, adjusted by area for energy content, transportation fees, and regional price differentials, and the unweighted arithmetic average first-day-of-the-month price for the 12-months ended December 31, 2011 of $92.71 per barrel for oil, adjusted by area for energy content, transportation fees, and regional price differentials. Using these prices, the Company's net book value oftheir related asset retirement cost. The oil and natural gas properties did not exceed the full cost ceiling amount at December 31, 2011.
At December 31, 2010, the full cost ceiling value of the Company's reserves was calculated based on the unweighted arithmetic average first-day-of-the-month price for the 12-months ended December 31, 2010 of $4.15 per MMBtu for natural gas, adjusted by area for energy content, transportation fees,pipeline gathering assets, related equipment, oil delivery stations and regional price differentials,water storage and the unweighted arithmetic average first-day-of-the-month price for the 12-months ended December 31, 2010 of $75.96 per barrel for oil, adjusted by area for energy content, transportation fees, and regional price differentials. Using these prices, the Company's net book value of oil and natural gas properties did not exceed the full cost ceiling amount at December 31, 2010.
8.    Pipeline and gas gathering assets
Pipeline and gas gathering assetstreatment facilities are recorded at cost, net of accumulated depletion, depreciation and amortization ("DD&A"), and consist of gathering assets and related equipment.impairment. See Note 2.m for discussion regarding midstream service asset retirement cost. Depreciation of assets is providedrecorded using the shorter of the lease term or the straight-line method based on estimated useful lives of twenty10 to 20 years, as applicable. Expenditures for majorsignificant betterments or renewals, or betterments, which extend the useful lives of existing fixed assets, are capitalized and depreciated. Upon retirement or disposition, the cost and related accumulated depreciation and amortization are removed from the accounts and any gain or loss is recognized in "Non-operating income (expense)""Loss on disposal of assets, net" in the consolidated statements of operations. DD&ADepreciation expense from continuing operations for pipeline and gatheringmidstream service assets was $3.2$7.5 million,, $2.5 $4.3 million and $2.0$1.5 million for the years ended December 31, 2012, 20112015, 2014 and 2010,2013, respectively.

F-10

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


Pipeline and gatheringMidstream service assets consist of the following as of December 31:
(in thousands) 2012 2011 2015 2014
Pipeline and gas gathering assets $74,877
 $58,136
Less accumulated depreciation and amortization 9,585
 6,394
Midstream service assets $147,811
 $117,052
Less accumulated depreciation (16,086) (8,590)
Total, net $65,292
 $51,742
 $131,725
 $108,462
9.i.    Other fixed assets
Other fixed assets are recorded at cost net of accumulatedand are subject to depreciation and amortization, and consist of land, furniture and fixtures, vehicles, leasehold improvements and computer hardware and software.amortization. Land is recorded at cost and is not subject to depreciation. Depreciation and amortization of other fixed assets is provided using the shorter of the lease term or the straight-line method based on estimated useful lives of three to ten years, as applicable. Leasehold improvements are capitalized and amortized over the shorter of the estimated useful lives of the assets or the terms of the related leases. Expenditures for majorsignificant betterments or renewals, or betterments, which extend the useful lives of existing fixed assets, are capitalized and depreciated. Upon retirement or disposition, the cost and related accumulated depreciation and amortization are removed from the accounts and any gain or loss is recognized in "Non-operating income (expense)""Loss on disposal of assets, net" in the consolidated statements of operations. DD&ADepreciation and amortization expense from continuing operations for other fixed assets was $3.36.5 million, $2.45.1 million and $1.64.4 million for the years ended December 31, 2012, 20112015, 2014 and 2010,2013, respectively.

F-10

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

Other fixed assets consist of the following as of December 31:
(in thousands) 2012 2011 2015 2014
Computer hardware and software $7,774
 $6,206
 $12,148
 $13,495
Vehicles 9,266
 7,802
Leasehold improvements 3,121
 1,847
 7,710
 6,867
Drilling service assets 7,223
 5,742
Vehicles 3,396
 1,279
Furniture and fixtures 1,057
 1,021
Production equipment 262
 255
Real estate and buildings 7,618
 4,908
Aircraft 4,952
 4,952
Other 675
 598
 5,105
 4,909
Depreciable total 23,508
 16,948
 46,799
 42,933
Less accumulated depreciation and amortization 8,938
 5,858
 (18,169) (13,820)
Depreciable total, net 14,570
 11,090
 28,630
 29,113
Land 2,091
 
 14,908
 13,232
Total, net $16,661
 $11,090
 $43,538
 $42,345
10.    Environmentalj. Long-lived assets, materials and supplies and line-fill
Impairment losses are recorded on property and equipment used in operations and other long-lived assets when indicators of impairment are present and the undiscounted cash flows estimated to be generated by those assets are less than the assets' carrying amount. Impairment is measured based on the excess of the carrying amount over the fair value of the asset.
Materials and supplies used in developing oil and natural gas properties and midstream service assets are carried at the lower of cost or market ("LCM") and are included in "Other current assets" and "Other assets, net" on the consolidated balance sheets. The market price for materials and supplies is determined utilizing the Company's recent prices paid to acquire materials. During the years ended December 31, 2015 and 2014, the Company reduced materials and supplies by $2.8 million and $1.8 million, respectively, in order to reflect the balance at LCM. These adjustments are included in "Impairment expense" in the consolidated statements of operations and as "Impairment expense" for the Company's exploration and production segment presented in Note 17. The Company determined an LCM adjustment was not necessary for materials and supplies during the year ended December 31, 2013.
The minimum volume of product in a pipeline system that enables the system to operate is known as line-fill, and is generally not available to be withdrawn from the pipeline system until the expiration of the transportation contract. Beginning in the fourth quarter of 2014, the Company owns oil line-fill in third-party pipelines, which is subjectaccounted for at LCM with cost determined using the weighted-average cost method, and is included in "Other assets, net" on the consolidated balance sheets. The LCM adjustment is determined utilizing a quoted market price adjusted for regional price differentials (Level 2). For the years ended December 31, 2015 and 2014, the Company recorded LCM adjustments of $1.3 million and $2.1 million, respectively, related to extensive federal, stateits line-fill, which is included in "Impairment expense" in the consolidated statements of operations and local environmental lawsas "Impairment expense" for the Company's midstream and regulations. These laws,marketing segment presented in Note 17.

F-11

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


For the year ended December 31, 2015, the Company recorded an impairment, based on an internally developed cash flow model, of $1.3 million related to its compressed natural gas station. This amount is included in "Impairment expense" in the consolidated statements of operations and as "Impairment expense" for the Company's midstream and marketing segment presented in Note 17. There were no comparable impairments recorded for the years ended December 31, 2014 or 2013.
k.    Debt issuance costs
Debt issuance fees, which are often changing, regulate the discharge of materials into the environment and may require the Company to remove or mitigate the environmental effects of the disposal or release of petroleum or chemical substances at various sites. Environmental expenditures are expensed in the period incurred. Expenditures that relate to an existing condition caused by past operations and that have no future economic benefits are expensed in the period incurred. Liabilities for expenditures of a non-capital nature are recorded when environmental assessment or remediation is probable and the costs can be reasonably estimated. Such liabilities are generally undiscounted unless the timing of cash payments is fixed and readily determinable. Management believes no materially significant liabilities of this nature existed at December 31, 2012 or 2011.
11.    Deferred loan costs
Loan origination fees are stated at cost, net of amortization, which are amortized over the life of the respective debt agreements utilizing the effective interest and straight-line methods. The Company capitalized $10.8$6.8 million and $23.2 of debt issuance costs during the year ended December 31, 2015 mainly as a result of the issuance of the March 2023 Notes (as defined below). The Company capitalized $7.8 million of deferred loandebt issuance costs in 2012 and 2011, respectively.during the year ended December 31, 2014 mainly as a result of the issuance of the January 2022 Notes (as defined below). The Company capitalized $3.0 million of debt issuance costs during the year ended December 31, 2013. The Company had total deferred loandebt issuance costs of $29.4$23.9 million and $23.5$28.5 million,, net of accumulated amortization of $9.2$17.0 million and $4.4$19.4 million,, as of December 31, 20122015 and 2011,2014, respectively.
The Company wrote-off approximately $6.6 million of debt issuance costs during the year ended December 31, 2015 as a result of the early redemption of the January 2019 Notes (as defined below), which is included in the consolidated statements of operations in the "Loss on early redemption of debt" line item. During the year ended December 31, 2011, the Company wrote-off $6.22014, $0.1 million in deferred loan of debt issuance costs were written-off as a result of the retirement of debt and changes in the borrowing base of the Senior Secured Credit Facility (as defined in Note C). No deferred loanbelow) due to the issuance of the January 2022 Notes. During the year ended December 31, 2013, $1.5 million of debt issuance costs were written off as a result of changes in the borrowing base of the Senior Secured Credit Facility due to the Anadarko Basin Sale (as defined below). Debt issuance costs written-off during the years ended December 31, 2012 or 2010.2014 and 2013 are included in the consolidated statements of operations in the "Write-off of debt issuance costs" line item. See Notes 4.d, 5.b, 5.c, 5.e and 5.f for definition of and information regarding the Anadarko Basin Sale, March 2023 Notes, January 2022 Notes, January 2019 Notes and Senior Secured Credit Facility, respectively.
During the year ended December 31, 2015, the Company early-adopted new guidance that seeks to simplify the presentation of debt issuance costs and has applied its provisions retrospectively. The adoption of this standard resulted in $18.8 million and $21.8 million of unamortized debt issuance costs related to the Company's senior unsecured notes being presented in "Long-term debt, net" rather than the past presentation in "Other assets, net" within its consolidated balance sheets as of December 31, 2015 and December 31, 2014, respectively. Other than this reclassification of the December 31, 2014 amount, the adoption of this standard did not have an impact on the Company's consolidated financial statements. Debt issuance costs related to the Senior Secured Credit Facility remain presented in "Other assets, net" on the Company's consolidated balance sheets. See Notes 5.h and 14 for additional discussion of debt issuance costs.
Future amortization expense of deferred loandebt issuance costs at December 31, 2012as of the period presented is as follows:
(in thousands)   December 31, 2015
2013 $5,197
2014 5,253
2015 5,314
2016 4,013
 $4,503
2017 4,575
2018 4,349
2019 2,915
2020 3,005
Thereafter 9,667
 4,585
Total $29,444
 $23,932

F-12

Laredo Petroleum, Inc.
12.Notes to the consolidated financial statements


l.    Other current liabilities
Other current liabilities consist of the following components as of December 31:
(in thousands) 2015 2014
Capital contribution payable to equity method investee(1)
 $27,583
 $
Accrued interest payable 24,208
 37,689
Accrued compensation and benefits 14,342
 13,034
Lease operating expense payable 13,205
 11,963
Costs of purchased oil 12,189
 20,114
Other accrued liabilities 14,695
 18,232
Total other current liabilities $106,222
 $101,032

(1)See Notes 15, 16 and 19.b for additional discussion regarding our equity method investee.
m.    Asset retirement obligations
Asset retirement obligations associated with the retirement of tangible long-lived assets are recognized as a liability in the period in which they are incurred and become determinable. The associated asset retirement costs are part of the carrying amount of the long-lived asset. Subsequently, the asset retirement cost included in the carrying amount of the related long-lived asset is charged to expense through the depletion, or for midstream service asset retirement cost through depreciation, of the associated asset. Changes in the liability due to the passage of time are recognized

F-11

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

as an increase in the carrying amount of the liability and as corresponding accretion expense. See Note G for
The fair value disclosures relatedof additions to the Company's asset retirement obligations.obligation liability is measured using valuation techniques consistent with the income approach, which converts future cash flows into a single discounted amount. Significant inputs to the valuation include: (i) estimated plug and abandonment cost per well based on Company experience, (ii) estimated remaining life per well, (iii) estimated removal and/or remediation costs for midstream service assets, (iv) estimated remaining life of midstream service assets, (v) future inflation factors and (vi) the Company's average credit adjusted risk-free rate. Inherent in the fair value calculation of asset retirement obligations are numerous assumptions and judgments including, in addition to those noted above, the ultimate settlement of these amounts, the ultimate timing of such settlement and changes in legal, regulatory, environmental and political environments. To the extent future revisions to these assumptions impact the fair value of the existing asset retirement obligation liability, a corresponding adjustment will be made to the asset balance.
The Company is obligated by contractual and regulatory requirements to remove certain pipeline and gas gathering assets and perform other remediation of the sites where such pipeline and gas gathering assets are located upon the retirement of those assets. However, the fair value of the asset retirement obligation cannot currently be reasonably estimated because the settlement dates are indeterminate. The Company will record an asset retirement obligation for pipeline and gas gathering assets in the periods in which settlement dates are reasonably determinable.
The following reconciles the Company's asset retirement obligationsobligation liability as of December 31:
(in thousands) 2015 2014
Liability at beginning of year $32,198
 $21,743
Liabilities added due to acquisitions, drilling, midstream service asset construction and other 2,236
 6,370
Accretion expense 2,423
 1,787
Liabilities settled upon plugging and abandonment (146) (450)
Liabilities removed due to sale of property (2,005) 
Revision of estimates(1)
 11,600
 2,748
Liability at end of year $46,306
 $32,198

(1)The revision of estimates that occurred during the year ended December 31, 2015 is mainly related to a change in the estimated remaining life per well due to declining commodity prices.

F-13

(in thousands) 2012 2011
Liability at beginning of year $13,074
 $8,278
Liabilities added due to acquisitions, drilling, and other 4,233
 1,519
Accretion expense 1,200
 616
Liabilities settled upon plugging and abandonment (148) (340)
Revision of estimates 3,146
 3,001
Liability at end of year $21,505
 $13,074
Laredo Petroleum, Inc.
13.Notes to the consolidated financial statements


n.    Fair value measurements
The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents, accounts receivable, prepaid expenses, accounts payable, undistributed revenue and royalties, accrued capital expenditures and other accrued assets and liabilities approximate their fair values. See Note C5.g for fair value disclosures related to the Company's debt obligations. The Company carries its derivative financial instrumentsderivatives at fair value. See Note F and Note G9 for details aboutregarding the fair value of the Company's derivative financial instruments.derivatives.
14.o.    Treasury stock
TheLaredo's employees may elect to have the Company accounts forwithhold shares of stock to satisfy their tax withholding obligations that arise upon the lapse of restrictions on their stock awards. Such treasury stock is recorded at cost.cost and retired upon acquisition.
15.p.    Revenue recognition
Oil, NGL and natural gas revenues are recorded using the sales method. Under this method, the Company recognizes revenues based on actual volumes of oil, NGL and natural gas sold to purchasers. TheFor natural gas sales, the Company and other joint interest owners may sell more or less than their entitlement share of the volumes produced. Under the sales method, when a working interest owner has overproduced in excess of its share of remaining estimated reserves, the overproduced party recognizes the excessive gas imbalance as a liability. If the underproduced working interest owner determines that an overproduced owner's share of remaining net reserves is insufficient to settle the imbalance, the underproduced owner recognizes a receivable, net of any allowance from the overproduced working interest owner.

F-12

Laredo Petroleum Holdings, Inc.
Notes The Company is also subject to the consolidated financial statements
December 31, 2012, 2011 and 2010

The following tables reflect the Company's natural gas pipeline imbalances, which are recorded as accounts receivable or payable at values consistent with contractual arrangements with the owner of the pipeline. The Company did not have any producer or pipeline imbalance positions as of December 31:
31, 2015 or 2014. During the year ended December 31, 2013, the majority of the Company's natural gas producer imbalance positions were transferred to a buyer in connection with the Anadarko Basin Sale (defined below). Prior to their disposition, the value of net overproduced positions arising during the year ended December 31, 2013, which increased oil and natural gas sales, was $0.03 million.
(dollars in thousands) 2012 2011
Natural gas imbalance current receivable (included in "Accounts receivable—Oil and natural gas sales") $416
 $22
Underproduced positions (Mcf) 176,454
 6,312
Natural gas imbalance current liability (included in "Other current liabilities") $26
 $32
Overproduced positions (Mcf) 11,113
 9,049
Natural gas imbalance long-term liability (included in "Other noncurrent liabilities") $1,040
 $935
Overproduced positions (Mcf) 440,478
 264,808
Midstream service revenues are recorded at the time products are sold or services are provided to third parties at a fixed or determinable price, delivery or performance has occurred, title has transferred and collectability of the revenue is probable. Revenues and expenses attributable to oil purchases and sales are reported on a gross basis when the Company takes title to the products and has risks and rewards of ownership.
  For the years ended December 31,
(dollars in thousands) 2012 2011 2010
Value of net underproduced (overproduced) positions arising during the period increasing (decreasing) oil and natural gas sales $295
 $(10) $25
Net overproduced (underproduced) positions arising during the period (Mcf) 7,592
 32,353
 (12,772)
16.    Generalq.    Fees received for the operation of jointly-owned oil and administrative expensenatural gas properties
The Company receives fees for the operation of jointly-owned oil and natural gas properties and records such reimbursements as a reduction of general and administrative expenses.
The following amounts have been recorded for the periods presented:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Fees received for the operation of jointly-owned oil and natural gas properties $2,335
 $2,241
 $1,497
 $3,125
 $3,265
 $3,398
17.r.    Compensation awards
For stock-based compensation awards,Stock-based compensation expense, net of amounts capitalized, is recognizedincluded in "General and administrative" in the Company's consolidated statements of operations over the awards' vesting periods and is based on theirthe awards' grant date fair value. The Company utilizes the closing stock price on the grant date, of grantless an expected forfeiture rate, to determine the fair value of service vesting restricted stock awards and a Black-Scholes pricing model to determine the fair values of service vesting restricted stock option awards. See Note D for further discussion of the restricted stock awards and restricted stock option awards.
For performance unit awards issued to management with a combination of market and service vesting criteria,The Company utilizes a Monte Carlo simulation prepared by an independent third party is utilized in order to determine the fair valuevalues of the performance share awards atand performance unit awards. On January 1, 2014, the dateCompany began capitalizing a portion of grant and to re-measure the fair value at the end of each reporting period until settlement in accordance with GAAP. Due to the relatively short trading historystock-based compensation for the Company's stock, the volatility criteria utilizedemployees who are directly involved in the Monte Carlo simulationacquisition, exploration and development of its oil and natural gas properties into the full cost pool. Capitalized stock-based compensation is based onincluded as an addition to "Oil and natural gas properties" in the volatilities of a group of peer companies that have been determined to be most representative ofconsolidated balance sheets. See Note 6 for further discussion regarding the Company's expected volatility. Theserestricted stock awards, are accounted for as liabilityrestricted stock option awards, as they will be settled in cash at the end of the requisite service period based on the achievement of certain performance criteria. The liabilityshare awards and related compensation expense for each period for these awards is recognized by dividing the fair value of the total liability by the requisite service period and recording the pro rata share for the period for which service has already been provided.
On February 3, 2012, the Company awarded 49,244 performance units under the LTIP (as defined in Note D). Subsequent to the award of these performance units, 2,116 were forfeited during 2012. These performance units issued have a performance period of January 1, 2012 to December 31, 2014 and are expected to be paid in 2015 if the performance criteria is met. There were no performance unit awards issued or outstanding during the year ended December 31, 2011. Compensation expense for these awards amounted to $1.8 million for the year ended December 31, 2012, and is recognized in "General and administrative" in the Company's consolidated statements of operations and the corresponding liability is included in "Other noncurrent liabilities" in the December 31, 2012 consolidated balance sheet. The payout of these awards, if at all, will be in 2015. As there are inherent uncertainties related to the factors and the Company's judgment in applying them to the fair value determinations, there is risk that the recorded performance unit compensation may not accurately reflect the amount ultimately earned by the members of management. Significant inputs to the Monte Carlo simulation include a volatility of 45.82%, aawards.

F-13F-14

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

dividend yield of 0.00% and a risk free rate of 0.25%. The fair value of these performance awards was $5.4 million at December 31, 2012.
18.s.    Income taxes
Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating losses and tax credit carry-forwards. Under this method, deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income (loss) in the period that includes the enactment date. A valuation allowance is established to reduce deferred tax assets if it is determined it is more likely than not that the related tax benefit will not be realized. On a quarterly basis, management evaluates the need for and adequacy of valuation allowances based on the expected realizability of the deferred tax assets and adjusts the amount of such allowances, if necessary. Additionally, the Company has not recorded any reserves for uncertain tax positions. See Note E7 for detail of amounts recorded in the consolidated financial statements.statements and discussion regarding the valuation allowance taken in 2015.
19.    ImpairmentThe Company evaluates uncertain tax positions for recognition and measurement in the consolidated financial statements. To recognize a tax position, the Company determines whether it is more likely than not that the tax position will be sustained upon examination, including resolution of long-lived assets
Impairment losses are recorded on property and equipment used in operations and other long-lived assets when indicators of impairment are present and the undiscounted cash flows estimated to be generated by those assets are less than the assets' carrying amount. Impairment is measuredany related appeals or litigation, based on the excesstechnical merits of the carryingposition. A tax position that meets the more-likely-than-not threshold is measured to determine the amount overof benefit to be recognized in the fair valueconsolidated financial statements. The amount of tax benefit recognized with respect to any tax position is measured as the largest amount of benefit that is greater than 50 percent likely of being realized upon settlement. The Company has no unrecognized tax benefits related to uncertain tax positions in the consolidated financial statements at December 31, 2015, 2014 or 2013.
t.    Environmental
The Company is subject to extensive federal, state and local environmental laws and regulations. These laws, among other things, regulate the discharge of materials into the environment and may require the Company to remove or mitigate the environmental effects of the asset. Duringdisposal or release of petroleum or chemical substances at various sites. Environmental expenditures are expensed in the period incurred. Liabilities for expenditures of a non-capital nature are recorded when environmental assessment or remediation is probable and the costs can be reasonably estimated. Such liabilities are generally undiscounted unless the timing of cash payments is fixed and readily determinable. Management believes no materially significant liabilities of this nature existed as of December 31, 2015 or 2014.
u.    Supplemental disclosures of cash flow and non-cash investing and financing information
The following table summarizes the supplemental disclosure of cash flow information for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Cash paid for interest, net of $236, $150 and $255 of capitalized interest, respectively $112,457
 $104,936
 $95,622
The following presents the supplemental disclosure of non-cash investing and financing information for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Change in accrued capital expenditures $(86,369) $31,913
 $(5,284)
Change in accrued capital contribution to equity method investee 27,583
 (2,597) 2,597
Capitalized asset retirement cost 13,836
 9,118
 6,790
Capitalized stock-based compensation 2,321
 4,650
 
Equity issued in connection with acquisition 
 
 3,029
Note 3—Equity offerings
a.   March 2015 Equity Offering
On March 5, 2015, the Company completed the sale of 69,000,000 shares of Laredo's common stock at a price to the public of $11.05 per share (the "March 2015 Equity Offering"). The Company received net proceeds of $754.2 million, after underwriting discounts and commissions and offering expenses, from the March 2015 Equity Offering. Entities affiliated with Warburg Pincus LLC ("Warburg Pincus") purchased 29,800,000 shares in the March 2015 Equity Offering, following which

F-15

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


Warburg Pincus owned 41.0% of Laredo's common stock. There were no comparative offerings of the Company's stock during the year ended December 31, 2011,2014.
b.   August 2013 Equity Offering
On August 19, 2013, Laredo, together with certain affiliates of Warburg Pincus and members of the Company reduced materialsCompany's management (together with Warburg Pincus, the "Selling Stockholders") completed the sale of (i) 13,000,000 shares of Laredo's common stock by Laredo and supplies(ii) 3,000,000 shares of Laredo's common stock by approximately $0.2 million in orderthe Selling Stockholders, at a price to reflect the balance atpublic of $23.75 per share ($22.9781 per share, net of underwriting discounts) (the "August 2013 Equity Offering"). On August 27, 2013, certain of the lowerSelling Stockholders sold an additional 1,577,583 shares of cost or market.Laredo's common stock pursuant to the option to purchase additional shares of Laredo's common stock granted to the associated underwriters. The Company determined a lowerreceived net proceeds of cost or market adjustment was not necessary for materials$298.1 million, after underwriting discounts and supplies at December 31, 2012commissions and 2010. Foroffering expenses, from the years ended December 31, 2012, 2011 and 2010, theAugust 2013 Equity Offering. The Company did not recordreceive any additional impairmentproceeds from either of the sales of shares of Laredo's common stock by the Selling Stockholders.
Note 4—Acquisitions and divestitures
a. 2015 Divestiture of non-strategic assets
On September 15, 2015, the Company completed the sale of non-strategic and primarily non-operated properties and associated production totaling 6,060 net acres and 123 producing properties in the Midland Basin to propertya third-party buyer for a purchase price of $65.5 million. After transaction costs reflecting an economic effective date of July 1, 2015, the net proceeds were $64.8 million, net of working capital adjustments and equipment usedpost-closing adjustments. The purchase price, excluding post-closing adjustments, was allocated to oil and natural gas properties pursuant to the rules governing full cost accounting.
Effective at closing, the operations and cash flows of these properties were eliminated from the ongoing operations of the Company and the Company has no continuing involvement in the properties. This divestiture does not represent a strategic shift and will not have a major effect on the Company's operations or other long-lived assets.financial results.
  20.    Business combinationsThe following table presents revenues and expenses of the oil and natural gas properties sold included in the accompanying consolidated statements of operations for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Oil, NGL and natural gas sales $5,138
 $19,337
 $24,187
Expenses(1)
 5,791
 11,082
 11,826

(1)Expenses include (i) lease operating expense, (ii) production and ad valorem tax expense, (iii) accretion expense and (iv) depletion expense.
b.    Summary of 2014 and 2013 acquisitions
The Company accounts for business combinationsacquisitions of evaluated and unevaluated oil and natural gas properties under the acquisition method of accounting. Accordingly, the Company conducts assessments of net assets acquired and recognizes amounts for identifiable assets acquired and liabilities assumed at the estimated acquisition date fair values, while transaction and integration costs associated with the acquisitions are expensed as incurred.
The Company makes various assumptions in estimating the fair values of assets acquired and liabilities assumed. The most significant assumptions relate to the estimated fair values of provedevaluated and unprovedunevaluated oil and natural gas properties. The fair value of these properties are measured using valuation techniques that convert future cash flows to a single discounted amount. Significant inputs to the valuation include estimates of: (i) reserves; (ii) future operating and development costs; (iii) future commodity prices; and (iv) a market-based weighted averageweighted-average cost of capital rate. The market-based weighted averageweighted-average cost of capital rate is subjected to additional project-specific riskingrisk factors. To compensate for the inherent risk of estimating the value of the unprovedunevaluated properties, the discounted future net revenues of probable and possible reserves are reduced by additional risk-weighting factors.
On July 12, 2012,

F-16

Laredo Petroleum, Inc.
Notes to the Company completed the acquisition of additional working interest in certain oil and natural gas properties located in Glasscock County, TX for a contract price of $20.5 million from a private company, subject to certain purchase price adjustments. The results of operations prior to July 2012 do not include results from this acquisition.consolidated financial statements


The following table reflectspresents the estimatedCompany's 2014 and 2013 acquisitions. For further discussion of the estimates of fair value of the acquired assets and liabilities of these acquisitions, see Note C in the Company's 2013 Annual Report on Form 10-K and Note 3 in the Company's 2014 Annual Report on Form 10-K.
(in thousands) Accounting treatment Cash consideration 
Common stock issued(2)
August 28, 2014 acquisition of leasehold interests Acquisition of assets $192,484
 $
June 23, 2014 acquisition of evaluated and unevaluated oil and natural gas properties Acquisition method 1,800
 
June 11, 2014 acquisition of evaluated and unevaluated oil and natural gas properties Acquisition method 4,693
 
February 25, 2014 acquisition of mineral interests Acquisition of assets 7,305
 
September 6, 2013 acquisition of evaluated and unevaluated oil and natural gas properties(1)
 Acquisition method 33,710
 3,029

(1)The fair value of the acquired assets and liabilities were allocated in the following manner: $9.7 million to evaluated properties, $27.1 million to unevaluated properties, $0.2 million to other assets and $0.2 million to other liabilities.
(2)In accordance with the acquisition agreement, on September 6, 2013, Laredo issued 123,803 restricted shares of its common stock to the sellers (the "Acquisition Shares"). In accordance with federal securities laws, the Acquisition Shares were restricted from trading on public markets for six months from the acquisition date. For accounting purposes, the fair value of the Acquisition Shares was determined in accordance with GAAP by adjusting the closing price of $26.21 per share of Laredo's common stock on September 6, 2013 for a discount for lack of marketability. The discount of 6.64% was determined utilizing an Asian put option model, which includes an assumption of the estimated volatility of Laredo's common stock. This assumption represents a Level 3 input under the fair value hierarchy, as described in Note 9.
c.    2013 divestiture of Dalhart Basin acreage
On December 20, 2013, the Company completed the sale of 37,000 net acres and one producing property in the Dalhart Basin for $20.4 million, subject to customary closing adjustments.
d.    2013 divestiture of Anadarko assets
On August 1, 2013, the Company completed the sale of its oil and natural gas properties, associated pipeline assets and various other associated property and equipment in the Anadarko Granite Wash, Central Texas Panhandle and the Eastern Anadarko Basin (the "Anadarko Basin Sale") to certain affiliates of EnerVest, Ltd. (collectively, "EnerVest") and certain other third parties in connection with the exercise of such third parties' preferential rights associated with this acquisitionthe oil and gas assets. The purchase price consisted of $400.0 million from EnerVest and $38.0 million from the third parties. Approximately $388.0 million of the purchase price, excluding closing adjustments, was allocated to oil and natural gas properties pursuant to to the rules governing full cost accounting. After transaction costs and adjustments at July 12, 2012:closing reflecting an economic effective date of April 1, 2013, the net proceeds were $428.3 million, net of working capital adjustments.
Effective at closing, the operations and cash flows of these properties were eliminated from the ongoing operations of the Company and the Company does not have continuing involvement in the operations of these properties. The results of operations of the oil and natural gas properties that are a component of the Anadarko Basin Sale are not presented as discontinued operations pursuant to the rules governing full cost accounting for oil and natural gas properties.
The following table presents revenues and expenses of the oil and natural gas properties that are a component of the Anadarko Basin Sale included in the accompanying consolidated statements of operations for the period presented:
(in thousands) For the year ended December 31, 2013
Revenues $59,631
Expenses(1)
 46,357

(1)Expenses include (i) lease operating expense, (ii) production and ad valorem tax expense, (iii) accretion expense and (iv) depletion expense.

F-17

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


The results of operations of the associated pipeline assets and various other associated property and equipment ("Pipeline Assets") are presented as results of discontinued operations, net of tax in these consolidated financial statements. Accordingly, the Company has reclassified the financial results and the related notes for all prior periods presented to reflect these operations as discontinued. As a result of the sale of the Pipeline Assets, a gain of $3.2 million was recognized in the consolidated statements of operations in the line item "Loss on disposal of assets, net" during the year ended December 31, 2013.
The following represents operating results from discontinued operations for the period presented:
(in thousands)  
Fair value of net assets:  
Proved oil and natural gas properties $16,925
Unproved oil and natural gas properties 3,693
     Total assets acquired 20,618
     Liabilities assumed 122
        Net assets acquired $20,496
Fair value of consideration paid for net assets:  
Cash consideration $20,496
(in thousands) For the year ended December 31, 2013
Revenues:  
Midstream service revenue $4,020
Total revenues from discontinued operations 4,020
Cost and expenses:  
Midstream service expense, net 1,189
Depreciation and amortization 627
Total costs and expenses from discontinued operations 1,816
Non-operating expense, net 
Income (loss) from discontinued operations before income tax 2,204
Income tax (expense) benefit (781)
Income (loss) from discontinued operations $1,423

C—Note 5—Debt
1.a.    Interest expense
The following amounts have been incurred and charged to interest expense for the periods presented:
  For the years ended December 31,
(in thousands) 2012 2011 2010
Cash payments for interest $75,265
 $31,157
 $15,223
Amortization of deferred loan costs and other adjustments 4,940
 4,231
 2,256
Accrued interest related to the October 2011 Notes(1)
 
 (3,378) 
Change in accrued interest 5,994
 18,570
 1,003
Interest charges incurred 86,199
 50,580
 18,482
Less capitalized interest (627) 
 
Total interest expense $85,572
 $50,580
 $18,482

(1)
As part of the October 19, 2011 offering of $200.0 million additional senior unsecured notes (further explained below), Laredo received $3.4 million in interest from the initial notes purchasers, which represents the interest on such notes that accrued from August 15, 2011 to October 19, 2011, the date of the issuance of the notes. This accrued interest was paid to the holders of such notes by Laredo on February 15, 2012.
2.
  For the years ended December 31,
(in thousands) 2015 2014 2013
Cash payments for interest $112,693
 $105,086
 $95,877
Amortization of debt issuance costs and other adjustments 4,243
 4,433
 4,926
Change in accrued interest (13,481) 11,804
 (221)
Interest costs incurred 103,455
 121,323
 100,582
Less capitalized interest (236) (150) (255)
Total interest expense $103,219
 $121,173
 $100,327
b.   March 2023 Notes
On March 18, 2015, the Company completed an offering of $350.0 million in aggregate principal amount of 6 1/4% senior unsecured notes due 2023 (the "March 2023 Notes"), and entered into an Indenture (the "Base Indenture"), as supplemented by the Supplemental Indenture (the "Supplemental Indenture" and, together with the Base Indenture, the "Indenture"), among Laredo, LMS and GCM, as guarantors, and Wells Fargo Bank, National Association, as trustee. The March 2023 Notes will mature on March 15, 2023 with interest accruing at a rate of 6 1/4% per annum and payable semi-annually in cash in arrears on March 15 and September 15 of each year, commencing September 15, 2015. The March 2023 Notes are fully and unconditionally guaranteed on a senior unsecured basis by the Guarantors and certain of the Company's future restricted subsidiaries, subject to certain automatic customary releases, including the sale, disposition, or transfer of all of the capital stock or of all or substantially all of the assets of a subsidiary guarantor to one or more persons that are not the Company or a restricted subsidiary, exercise of legal defeasance or covenant defeasance options or satisfaction and discharge of the Indenture, designation of a subsidiary guarantor as a non-guarantor restricted subsidiary or as an unrestricted subsidiary in accordance with the Indenture, release from guarantee under the Senior Secured Credit Facility (as defined below), or liquidation or dissolution (collectively, the "Releases").
The March 2023 Notes were offered and sold pursuant to a prospectus supplement dated March 4, 2015 and the base prospectus dated March 22, 2013, relating to the Company's effective shelf registration statement on Form S-3 (File No. 333-187479). The Company received net proceeds of $343.6 million from the offering, after deducting the underwriters'

F-18

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


discount and the estimated outstanding offering expenses. In April 2015, the Company used the proceeds of the offering to fund a portion of the Company's redemption of the January 2019 Notes (as defined below). See Note 5.e for additional discussion of this early redemption.
The Company may redeem, at its option, all or part of the March 2023 Notes at any time on or after March 15, 2018, at the applicable redemption price plus accrued and unpaid interest to, but not including, the date of redemption. Further, before March 15, 2018, the Company may on one or more occasions redeem up to 35% of the aggregate principal amount of the March 2023 Notes in an amount not exceeding the net proceeds from one or more private or public equity offerings at a redemption price of 106.25% of the principal amount of the March 2023 Notes, plus accrued and unpaid interest to the date of redemption, if at least 65% of the aggregate principal amount of the March 2023 Notes remains outstanding immediately after such redemption and the redemption occurs within 180 days of the closing date of each such equity offering. If a change of control occurs prior to March 15, 2016, the Company may redeem all, but not less than all, of the March 2023 Notes at a redemption price equal to 110% of the principal amount of the March 2023 Notes plus any accrued and unpaid interest to, but not including, the date of redemption.
c.   January 2022 Notes
On January 23, 2014, the Company completed an offering of $450.0 million in aggregate principal amount of 5 5/8% senior unsecured notes due 2022 (the "January 2022 Notes"), and entered into an Indenture (the "2014 Indenture") among Laredo, LMS as guarantor and Wells Fargo Bank, National Association, as trustee. The January 2022 Notes will mature on January 15, 2022 with interest accruing at a rate of 5 5/8% per annum and payable semi-annually in cash in arrears on January 15 and July 15 of each year, commencing July 15, 2014. The January 2022 Notes are fully and unconditionally guaranteed on a senior unsecured basis by the Guarantors and certain of the Company's future restricted subsidiaries, subject to certain Releases.
The January 2022 Notes were issued pursuant to the 2014 Indenture in a transaction exempt from the registration requirements of the Securities Act of 1933, as amended (the "Securities Act"). The January 2022 Notes were offered and sold only to qualified institutional buyers pursuant to Rule 144A under the Securities Act and to persons outside the United States pursuant to Regulation S under the Securities Act. The Company received net proceeds of $442.2 million from the offering, after deducting the initial purchasers' discount and the estimated outstanding offering expenses. The Company used the net proceeds of the offering for general working capital purposes.
Laredo will have the option to redeem all or part of the January 2022 Notes at any time on and after January 15, 2017, at the applicable redemption price plus accrued and unpaid interest to the date of redemption. In addition, the Company may redeem, at its option, all or part of the January 2022 Notes at any time prior to January 15, 2017 at a redemption price equal to 100% of the principal amount of the January 2022 Notes redeemed plus the applicable premium and accrued and unpaid interest and additional interest, if any, to the date of redemption. Further, before January 15, 2017, the Company may on one or more occasions redeem up to 35% of the aggregate principal amount of the January 2022 Notes in an amount not exceeding the net proceeds from one or more private or public equity offerings at a redemption price of 105.625% of the principal amount of the January 2022 Notes, plus accrued and unpaid interest to the date of redemption, if at least 65% of the aggregate principal amount of the January 2022 Notes remains outstanding immediately after such redemption and the redemption occurs within 180 days of the closing date of each such equity offering.
d.    May 2022 Notes
On April 27, 2012, Laredothe Company completed an offering of $500.0$500.0 million in aggregate principal amount of 7 3/8% senior unsecured notes due 2022 (the "2022"May 2022 Notes"). The May 2022 Notes will mature on May 1, 2022 and bear an interest rate of 7 3/8% per annum, payable semi-annually, in cash in arrears on May 1 and November 1 of each year, commencing November 1, 2012. The May 2022 Notes are fully and unconditionally guaranteed jointly and severally on a senior unsecured basis by Laredo Holdingsthe Guarantors and itscertain of the Company's future restricted subsidiaries, with the exception of Laredo (collectively, the "Guarantors"). The net proceeds from the 2022 Notes were usedsubject to pay in full $280.0 million outstanding under Laredo's revolving Amended and Restated Credit Agreement (as amended, the "Senior Secured Credit Facility") and for general working capital purposes.certain Releases.
The May 2022 Notes were issued under, and are governed by, an indenture and supplement thereto, each dated April 27, 2012 (collectively, and as further supplemented, the "2012 Indenture"), among Laredo Inc, Wells Fargo Bank, National Association, as trustee, and the Guarantors.guarantors named therein. The 2012 Indenture contains customary terms, events of default and covenants relating to, among other things, the incurrence of debt, the payment of dividends or similar restricted payments, entering into transactions with affiliates and limitations on asset sales. Indebtedness under the May 2022 Notes may be accelerated in certain circumstances upon an event of default as set forth in the 2012 Indenture.
Laredo will have the option to redeem the May 2022 Notes, in whole or in part, at any time on or after May 1, 2017, at the redemption prices (expressed as percentages of principal amount) of 103.688% for the 12-month period beginning on May 1, 2017, 102.458% for the 12-month period beginning on May 1, 2018, 101.229% for the 12-month period beginning on May 1, 2019 and 100.000% beginning on May 1, 2020 and at any time thereafter, together with any accrued and unpaid interest, if any,

F-19

Laredo Petroleum, Inc.
Notes to but not including,the consolidated financial statements


to the date of redemption. In addition, before May 1, 2017, Laredo may redeem all or any part of the May 2022 Notes at a redemption price equal to the sum of the principal amount thereof, plus a make-whole premium at the redemption date, plus accrued and unpaid interest, if any, to the redemption date. Furthermore, before May 1, 2015, Laredo may, at any time or from time to time, redeem up to 35% of the aggregate principal amount of the 2022 Notes with the net proceeds of a public or private equity offering at a redemption price of 107.375% of the principal amount of the 2022 Notes, plus any accrued and unpaid interest to the date of redemption, if at least 65% of the aggregate principal amount of the 2022 Notes issued under the 2012 Indenture remains outstanding immediately after such redemption and the redemption occurs within 180 days of the closing date of such equity offering. Laredo may also be required to make an offer to purchase the May 2022 Notes upon a change of control triggering event. In addition, if a change of control occurs prior to May 1, 2013, Laredo may redeem all, but not less than all, of the notes at a redemption price equal to 110% of the principal amount of the 2022 Notes redeemed, plus any accrued and unpaid interest, if any, up to the date of redemption.

F-14

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

In connection with the issuance of the 2022 Notes, Laredo and the Guarantors entered into a registration rights agreement with the initial purchasers of the 2022 Notes on April 27, 2012, pursuant to which Laredo and the Guarantors filed with the SEC, a registration statement that became effective with respect to an offer to exchange the 2022 Notes for substantially identical notes (other than with respect to restrictions on transfer or to any increase in annual interest rate) that are registered under the Securities Act of 1933, as amended (the "Securities Act"). The offer to exchange the 2022 Notes for substantially identical notes registered under the Securities Act commenced on July 2, 2012 and was consummated on August 1, 2012 with all notes exchanged.
3.e.    January 2019 Notes
On January 20, 2011, Laredothe Company completed an offering of $350.0$350.0 million 9 1/2% Senior Notessenior unsecured notes due 2019 (the "January Notes") and on October 19, 2011, Laredothe Company completed an offering of an additional $200.0$200.0 million 9 1/2% Senior Notessenior unsecured notes due 2019 (the "October 2011 Notes" and together with the January Notes, the "2019"January 2019 Notes"). The January 2019 Notes willwere due to mature on February 15, 2019 and bearbore an interest rate of 9.5%9 1/2% per annum, payable semi-annually, in cash in arrears on February 15 and August 15 of each year. The January 2019 Notes arewere fully and unconditionally guaranteed jointly and severally, on a senior unsecured basis by the Guarantors.
In connection with the issuanceGuarantors and certain of the Company's future restricted subsidiaries, subject to certain Releases.
The January 2019 Notes were issued under and were governed by an indenture dated January 20, 2011 (as supplemented, the "2011 Indenture") among Laredo Inc, Wells Fargo Bank, National Association, as trustee, and guarantors named therein. The Indenture contains customary terms, events of default and covenants relating to, among other things, the incurrence of debt, the payment of or similar restricted payments, the undertaking of transactions with Laredo's unrestricted affiliates and limitations on asset sales.
On April 6, 2015 (the "Redemption Date"), utilizing a portion of the proceeds from the March 2015 Equity Offering and the Guarantors entered into registration rights agreements withMarch 2023 Notes offering, the initial purchasersentire $550.0 million outstanding principal amount of the January 2019 Notes pursuantwas redeemed at a redemption price of 104.750% of the principal amount of the January 2019 Notes, plus accrued and unpaid interest up to which Laredothe Redemption Date. The Company recognized a loss on extinguishment of $31.5 million related to the difference between the redemption price and the Guarantors filed withnet carrying amount of the SEC a registration statement that became effective with respect to an offer to exchange theextinguished January 2019 Notes for substantially identical notes (other than with respect to restrictions on transfer or to any increase in annual interest rate) registered under the Securities Act. The offer to exchange the 2019 Notes for substantially identical notes registered under the Securities Act was consummated on January 13, 2012 with all notes exchanged.Notes.
4.    Senior secured credit facility
Thef.    Senior Secured Credit Facility
As of December 31, 2015, the Fourth Amended and Restated Credit Agreement (as amended, the "Senior Secured Credit Facility"), which matures July 1, 2016, hasNovember 4, 2018, had a capacitymaximum credit amount of $2.0$2.0 billion, with a borrowing base of $825.0$1.15 billion and an aggregate elected commitment of $1.0 billion with $135.0 million at December 31, 2012. At December 31, 2012, $165.0 million was outstanding whichand was subject to an interest rate of 2.0%1.90%. The borrowing base is subject to a semi-annual redetermination occurring each May 1 and November 1 based on the financial institutions' evaluation of the Company's oil and natural gas reserves. As defined in the Senior Secured Credit Facility, (i) the Adjusted Base Rate advances under the facility bear interest payable quarterly at an Adjusted Base Rate plus applicable margin, which ranges from 0.5% to 1.5% and (ii) the Eurodollar advances under the facility bear interest, at ourthe Company's election, at the end of one-month, two-month, three-month, six-month or, to the extent available, 12-month interest periods (and in the case of six-month and 12-month interest periods, every three months prior to the end of such interest period) at an Adjusted London Interbank Offered Rate plus an applicable margin, which ranges from 1.5% to 2.5%, based on the ratio of outstanding revolving credit to the conforming base rate.total commitment under the Senior Secured Credit Facility. Laredo is also required to pay an annual commitment fee on the unused portion of the financial institutions' commitment of 0.375% to 0.5%, based on the ratio of outstanding revolving credit to the conforming base rate.total commitment under the Senior Secured Credit Facility.
The Senior Secured Credit Facility is secured by a first priorityfirst-priority lien on Laredo and the Guarantor's assets and stock, including oil, NGL and natural gas properties, constituting at least 80% of the present value of the Company's provedevaluated reserves. Further, the Company is subject to various financial and non-financial ratios on a consolidated basis, including a current ratio at the end of each calendar quarter, of not less than 1.00 to 1.00.1.00. As defined by the Senior Secured Credit Facility, the current ratio represents the ratio of current assets to current liabilities, inclusive of available capacity and exclusive of current balances associated with derivative positions. Additionally, at the end of each calendar quarter, the Company must maintain a ratio of (I) its consolidated net income (a) plus each of the following; (i) any provision for (or less any benefit from) income or franchise taxes; (ii) consolidated net interest expense; (iii) depletion, depreciation depletion and amortization expense; (iv) exploration expenses; and (v) other non-cash charges, and (b) minus all non-cash income ("EBITDAX"), as defined in the Senior Secured Credit Facility, to (II) the sum of net interest expense plus letter of credit fees of not less than 2.50 to 1.00,, in each case for the four quarters then ending. The Senior Secured Credit Facility contains both financial and non-financial covenants and the Company was in compliance with these covenants at December 31, 2012 and 2011.for all periods presented.
Additionally, the Senior Secured Credit Facility provides for the issuance of letters of credit, limited to the lesser of total capacity or $20.0 million.
Subsequent to$20.0 million. No letters of credit were outstanding as of December 31, 2012, the Company borrowed additional funds on the Senior Secured Credit Facility. See Note N.1 for additional information.2015 or 2014.

F-15F-20

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

5.g.    Fair value of debt
The Company has not elected to account for its debt at fair value. The following table presents the carrying amountamounts and fair valuevalues of the Company's debt instruments at December 31:as of the periods presented:
 December 31, 2012 December 31, 2011 December 31, 2015 December 31, 2014
(in thousands) 
Carrying
value
 
Fair
value
 
Carrying
value
 
Fair
value
 Long-term debt 
Fair
value
 Long-term debt 
Fair
value
2019 Notes(1)
 $551,760
 $616,000
 $551,961
 $585,750
2022 Notes 500,000
 541,250
 
 
January 2019 Notes(1)
 $
 $
 $551,295
 $550,000
January 2022 Notes 450,000
 388,301
 450,000
 396,014
May 2022 Notes 500,000
 460,000
 500,000
 467,529
March 2023 Notes 350,000
 301,000
 
 
Senior Secured Credit Facility 165,000
 165,098
 85,000
 84,893
 135,000
 134,993
 300,000
 300,279
Total value of debt $1,216,760
 $1,322,348
 $636,961
 $670,643
 $1,435,000
 $1,284,294
 $1,801,295
 $1,713,822

(1)
The carrying value of the 2019 Noteslong-term debt amount includes the October 2011 NotesNotes' unamortized bond premium of approximately $1.8 million and $2.01.3 million as of December 31, 2012 and 2011, respectively.2014.
At December 31, 2012 and 2011, theThe fair valuevalues of the debt outstanding on the January 2019 Notes, the January 2022 Notes, the May 2022 Notes and the 2022March 2023 Notes waswere determined using the December 31, 20122015 and 20112014 quoted market price (Level 1), respectively, and the for each respective instrument. The fair valuevalues of the outstanding debt at December 31, 2012 and 2011 on the Senior Secured Credit Facility wasas of December 31, 2015 and 2014 were estimated utilizing pricing models for similar instruments (Level 2). See Note G9 for information about fair value hierarchy levels.
h.    Debt issuance costs
The following tables summarize the net presentation of the Company's long-term debt and debt issuance cost on the consolidated balance sheets as of the periods presented:
  December 31, 2015 December 31, 2014
(in thousands) Long-term debt Debt issuance costs, net Long-term debt, net Long-term debt Debt issuance costs, net Long-term debt, net
January 2019 Notes(1)
 $
 $
 $
 $551,295
 $(7,031) $544,264
January 2022 Notes 450,000
 (5,939) 444,061
 450,000
 (6,916) 443,084
May 2022 Notes 500,000
 (7,066) 492,934
 500,000
 (7,901) 492,099
March 2023 Notes 350,000
 (5,769) 344,231
 
 
 
Senior Secured Credit Facility(2)
 135,000
 
 135,000
 300,000
 
 300,000
Total $1,435,000
 $(18,774) $1,416,226
 $1,801,295
 $(21,848) $1,779,447

(1)The long-term debt amount includes the October Notes' unamortized bond premium of $1.3 million as of December 31, 2014.
(2)Debt issuance costs related to our Senior Secured Credit Facility are recorded in "Other assets, net" on the consolidated balance sheets.
D—Stock-basedNote 6—Employee compensation
In November 2011, the Board of Directors of Laredo Holdings approvedThe Company has a Long-Term Incentive Plan (the "LTIP"), which provides for the granting of incentive awards in the form of restricted stock awards, restricted stock option awards, performance share awards, performance unit awards and other awards. The LTIP provides for the issuance of 10.0 million shares. See Note N.3 for discussion of the February 2013 issuance of restricted stock, stock option awards and other awards.
The Company recognizes the fair value of stock-based paymentscompensation awards expected to employees and directorsvest over the requisite service period as a charge against earnings.earnings, net of amounts capitalized. The Company recognizesCompany's stock-based payment expense over the requisite service period. Laredo Holdings' stock-based paymentcompensation awards are accounted for as equity instruments.instruments and its performance unit awards are accounted for as liability awards. Stock-based compensation is included in "General and administrative" in the consolidated statements of operations. On January 1, 2014, the Company began capitalizing a portion of stock-based compensation for employees who are directly involved in the acquisition, exploration and development of oil and natural gas properties into the full cost pool. Capitalized stock-based compensation is included as an addition to "Oil and natural gas properties" in the consolidated balance sheets.

F-21

Laredo Petroleum, Inc.
1.Notes to the consolidated financial statements


a.    Restricted stock awards
All restricted stock awards are treated as issued and outstanding in the accompanying consolidated financial statements. IfPer the award agreement terms, if an employee terminates employment prior to the restriction lapse date, for reasons other than death and disability, the awarded shares are forfeited and canceled and are no longer considered issued and outstanding. If the employee's termination of employment is by reason of death or disability, all of the holder's restricted stock will automatically vest. Restricted stock awards convertedgranted to officers and employees vest in the Corporate Reorganization vested a variety of vesting schedules including (i) 20% at the grant date and then vest 20% annually thereafter. The restricted stock awards granted under the LTIP to employees vest thereafter, (ii) 33%, 33% and 34% per year beginning on the first anniversary date of the grant.grant, (iii) 50% in year two and 50% in year three, (iv) fully on the first anniversary of the grant date and (v) fully on the third anniversary of the grant date. Restricted stock awards granted to non-employee directors vest fully on the first anniversary date of the grant.grant date.    

F-16

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

The following table reflects the outstanding restricted stock awards for the yearyears ended December 31, 20122015, 2014 and from the Corporate Reorganization until December 31, 2011:2013:
(in thousands, except for grant date fair values) 
Restricted
stock awards
 
Weighted average
grant date
fair value
Outstanding at December 19, 2011 
 $
Exchanged 912
 1.14
Vested (1) 1.11
Outstanding at December 31, 2011 911
 1.14
  Granted 932
 22.90
  Forfeited (251) 15.61
  Vested(1)
 (397) 1.03
Outstanding at December 31, 2012 1,195
 $15.06
(in thousands, except for weighted-average grant date fair values) 
Restricted
stock awards
 
Weighted-average
grant date
fair value (per award)
Outstanding as of December 31, 2012 1,195
 $15.06
  Granted 1,469
 $18.17
  Forfeited (229) $18.47
  Vested(1)
 (636) $18.69
Outstanding as of December 31, 2013 1,799
 $19.17
  Granted 1,234
 $25.68
  Forfeited (148) $22.56
  Vested(1)
 (680) $19.13
Outstanding as of December 31, 2014 2,205
 $22.63
  Granted 1,902
 $11.98
  Forfeited (553) $20.48
  Vested(1)
 (1,015) $22.32
Outstanding as of December 31, 2015 2,539
 $15.26

(1)The vesting of certain restricted stock awards could result in federal and state income tax expense or benefit related to the difference between the market price of the common stock at the date of vesting and the date of grant. See Note 7 for additional discussion regarding the tax impact of vested restricted stock awards.
(1) Vestings in the year ended December 31, 2012 related to restricted stock awards converted in the Corporate Reorganization. Such shares have a tax basis of zero to the grantee and therefore result in no tax benefit to the Company.
The Company utilizes the closing stock price on the grant date of grant to determine the fair value of service vesting restricted stock awards. For the years endedAs of December 31, 2012, 2011 and 2010, respectively,2015, unrecognized stock-based compensation expense related to the restricted stock awards expected to vest was $17.6 million, $13.0 million and $2.1 million. That$21.6 million. Such cost is expected to be recognized over a weighted averageweighted-average period of 2.01 years.1.74 years.

F-22

Laredo Petroleum, Inc.
2.Notes to the consolidated financial statements


b.    Restricted stock option awards
Restricted stock optionsoption awards granted under the LTIP vest and are exercisable in four equal installments on each of the first four anniversaries of the date of the grant.grant date. The following table reflects the stock option award activity for the yearyears ended December 31, 2012:2015, 2014 and 2013:
(in thousands, except for weighted-average price and contractual term)
Restricted
stock option
awards

Weighted-average
price
(per option)

Weighted-average
remaining contractual term
(years)
Outstanding as of December 31, 2012
459

$24.11

10
Granted
1,019
 $17.34
  
Exercised(1)
 (104) $20.79
  
Expired or canceled (12) $24.11
  
Forfeited
(133) $19.88
  
Outstanding as of December 31, 2013
1,229
 $19.32
 8.82
Granted
336
 $25.60
  
Exercised(1)

(95) $19.93
  
Expired or canceled
(30) $21.15
  
Forfeited
(73) $19.68
  
Outstanding as of December 31, 2014
1,367
 $20.76
 8.17
Granted 632
 $11.93
 
Exercised 
 $
 
Expired or canceled (82) $19.92
 
Forfeited (139) $18.17
  
Outstanding as of December 31, 2015 1,778
 $17.86
 7.91
Vested and exercisable at end of period(2)

545

$20.77

6.94
Expected to vest at end of period(3)
 1,219
 $16.51
 8.34

(in thousands, except for weighted average exercise price and contractual term) 
Restricted
stock option
awards
 
Weighted average
exercise price
(per option)
 
Weighted average
contractual term
(years)
Outstanding at December 31, 2011 
 $
 
Granted 603
 24.11
 10
Forfeited (144) 24.11
 10
Outstanding at December 31, 2012 459
 $24.11
 10
Vested and exercisable at end of period 
  
  
(1)The exercise of stock option awards could result in federal and state income tax expense or benefits related to the difference between the fair value of the stock option award at the date of grant and the intrinsic value of the stock option award when exercised. See Note 7 for additional discussion regarding the tax impact of exercised stock option awards.
(2)The vested and exercisable options as of December 31, 2015 had no aggregate intrinsic value.
(3)The restricted stock options expected to vest as of December 31, 2015 had no aggregate intrinsic value.
The Company usedutilizes the Black-Scholes option pricing model to determine the fair value of restricted stock optionsoption awards and is recognizing the associated expense on a straight-line basis over the four-year requisite service period of the awards. Determining the fair value of stock-basedequity-based awards requires judgment, including estimating the expected term that stock optionsoption awards will be outstanding prior to exercise and the associated volatility. For the years endedAs of December 31, 2012,2015, unrecognized stock-based compensation expense related to restricted stock option awards expected to vest was $4.57.0 million. ThatSuch cost is expected to be recognized over a weighted averageweighted-average period of 2.35 years.2.61 years. No restricted stock options were outstanding in the years ended December 31, 2011 or 2010.

F-17F-23

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

The assumptions used to estimate the fair value of restricted stock options granted in the year ended December 31, 2012 are as follows:
 February 27, 2015 February 27, 2014 February 15, 2013 February 3, 2012
Risk-free interest rate(1)
 1.14% 1.70% 1.88% 1.19%
1.14%
Expected option life(2)
 6.25 years
 6.25 years
 6.25 years
 6.25 years

6.25 years
Expected volatility(3)
 59.98% 52.59% 53.21% 58.89%
59.98%
Fair value per option $13.52
Fair value per stock option $6.15
 $13.41
 $9.67

$13.52

(1)U.S. Treasury yields as of the grant date were utilized for the risk-free interest rate assumption, matchingcorrelating the treasury yield terms to the expected life of the option.
(2)As the Company hashad limited or no historical exercise history at the time of valuation relating to terminations and modifications, expected option life assumptions were developed using the simplified method in accordance with GAAP.
(3)The Company utilized its own volatility in order to develop the expected volatility for the February 27, 2015 grant. The prior grants utilized a peer historical look-back, which was weighted with the Company's own volatility, since the IPO,in order to develop the expected volatility.
In accordance with the LTIP and stock option agreement, the options granted will become exercisable in accordance with the following schedule based upon the number of full years of the optionee's continuous employment or service with the Company, following February 3, 2012:the date of grant:
Full years of continuous employment Incremental percentage of
option exercisable
 Cumulative percentage of
option exercisable
Less than one % %
One 25% 25%
Two 25% 50%
Three 25% 75%
Four 25% 100%
No shares of common stock may be purchased unless the optionee has remained in the continuous employment ofwith the Company through February 2, 2014.for one year from the grant date. Unless terminated sooner, terminated, the option will expire if and to the extent it is not exercised within 10 years from the grant date. The unvested portion of ana stock option willaward shall expire upon termination of employment, of the optionee, and the vested portion of sucha stock option willaward shall remain exercisable for (A) (i) one year following termination of employment by reason of the holder's death but not later than the option expiration or (B) 90 days following termination of employment or service without cause,disability, but not later than the expiration of the option period. The unvested and the unexercised vested portion of the option will expire uponperiod, or (ii) 90 days following termination of employment for any reason other than the holder's death or disability, and other than the holder's termination of employment for cause. Both the unvested and the vested but unexercised portion of a stock option award shall expire upon the termination of the option holder's employment or service by the Company for cause.
c. Performance share awards
3.The performance share awards granted to management on February 27, 2015 (the "2015 Performance Share Awards") and on February 27, 2014 (the "2014 Performance Share Awards") are subject to a combination of market and service vesting criteria. A Monte Carlo simulation prepared by an independent third party was utilized to determine the grant date fair value of these awards. The Company has determined these awards are equity awards and recognizes the associated expense on a straight-line basis over the three-year requisite service period of the awards. These awards will be settled, if at all, in stock at the end of the requisite service period based on the achievement of certain performance criteria.
The 2015 Performance Share Awards have a performance period of January 1, 2015 to December 31, 2017 and any shares earned under such awards are expected to be issued in the first quarter of 2018 if the performance criteria are met. During the year ended December 31, 2015, the Company granted 602,501 2015 Performance Share Awards and all remain outstanding as of December 31, 2015. The 271,667 outstanding 2014 Performance Share Awards have a performance period of January 1, 2014 to December 31, 2016 and any shares earned under such awards are expected to be issued in the first quarter of 2017 if the performance criteria are met. No 2014 Performance Share Awards were forfeited during the years ended December 31, 2015 or 2014.
As of December 31, 2015, unrecognized stock-based compensation related to the 2015 Performance Share Awards and the 2014 Performance Share Awards was $9.9 million. Such cost is expected to be recognized over a weighted-average period of 1.86 years.

F-24

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


The assumptions used to estimate the fair value of the Performance Share Awards granted are as follows:
  February 27, 2015 February 27, 2014
Risk-free rate(1)
 0.95% 0.63%
Dividend yield % %
Expected volatility(2)
 53.78% 38.21%
Laredo stock closing price as of the grant date $11.93
 $25.60
Fair value per performance share $16.23
 $28.56

(1)The risk-free rate was derived using a zero-coupon yield derived from the Treasury Constant Maturities yield curve on the grant date.
(2)The Company utilized a peer historical look-back, weighted with the Company's own volatility, to develop the expected volatility.
d.    Stock-based compensation award expense
The following has been recorded to stock-based compensation expense for the periods presented:
  For the years ended December 31,
(in thousands) 2012 2011 2010
Restricted stock award compensation expense $8,496
 $6,111
 $1,257
Restricted stock option award compensation expense 1,560
 
 
Total stock-based compensation expense $10,056
 $6,111
 $1,257
  For the years ended December 31,
(in thousands) 2015 2014 2013
Restricted stock award compensation $17,534
 $21,982
 $17,084
Restricted stock option award compensation 4,074
 3,639
 4,349
Restricted performance share award compensation 5,222
 2,108
 
Total stock-based compensation, gross 26,830
 27,729
 21,433
Less amounts capitalized in oil and natural gas properties (2,321) (4,650) 
Total stock-based compensation, net of amounts capitalized $24,509
 $23,079
 $21,433
During the year ended December 31, 2013, two officers' and 20 employees' restricted stock awards and restricted option awards were modified to vest upon the officers' or the employees' retirement or in connection with the employees' termination of employment as a result of the Anadarko Basin Sale. The incremental compensation cost resulting from these modifications recognized during the year ended December 31, 2013 was $4.7 million.
e. Performance unit awards
The performance unit awards issued to management on February 15, 2013 (the "2013 Performance Unit Awards") and on February 3, 2012 (the "2012 Performance Unit Awards") were subject to a combination of market and service vesting criteria. These awards were accounted for as liability awards as they were settled in cash at the end of the requisite service period based on the achievement of certain performance criteria. A Monte Carlo simulation prepared by an independent third party was utilized to determine the fair values of these awards at the grant date and to re-measure the fair values at the end of each reporting period until settlement in accordance with GAAP. The volatility criteria utilized in the Monte Carlo simulation was based on the volatility of the Company's stock price and the stock price volatilities of a group of peer companies defined in each respective award agreement. The liability and related compensation expense of these awards for each period was recognized by dividing the fair value of the total liability by the requisite service period and recording the pro rata share for the period for which service had already been provided.
The 2013 Performance Unit Awards had a performance period of January 1, 2013 to December 31, 2015 and, as their performance criteria were satisfied, they were paid at $143.75 per unit during the first quarter of 2016. The 2012 Performance Unit Awards had a performance period of January 1, 2012 to December 31, 2014 and, as their performance criteria were satisfied, they were paid at $100 per unit during the first quarter of 2015.

F-18F-25

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements


The following table reflects the outstanding performance unit awards for the periods presented:
(in thousands)
2013 Performance Unit Awards(2)
 
2012 Performance Unit Awards (3)
Outstanding at December 31, 2012

 47
Granted
58
 
Forfeited
(4) (9)
Vested(1)
 (10) (11)
Outstanding at December 31, 2013
44
 27
Vested

 (27)
Outstanding at December 31, 2014
44
 
Vested (44) 
Outstanding at December 31, 2015 
 

(1)During the year ended December 31, 2013, certain officers' performance unit awards were modified to vest upon the officers' retirement in 2013. The cash payments for these performance unit awards were paid at $100.00 per unit.
(2)The 2013 Performance Unit Awards' performance period ended December 31, 2015. Their market and service criteria were met and accordingly they were paid at $143.75 per unit in the first quarter of 2016.
(3)The 2012 Performance Unit Awards' performance period ended December 31, 2014. Their market and service criteria were met and accordingly they were paid at $100.00 per unit in the first quarter of 2015.
The liability related to the 2013 Performance Unit Awards as of December 31, 2015 was $6.4 million and represents the cash payment made in the first quarter of 2016. The fair value of the 2013 Performance Unit Awards as of December 31, 2014 was $3.5 million. The liability related to the 2012 2011Performance Unit Awards as of December 31, 2014 was $2.7 million and 2010represents the cash payment made in the first quarter of 2015. The fair values of the 2013 Performance Unit Awards and 2012 Performance Unit Awards as of December 31, 2013 were $5.7 million and $3.8 million, respectively.
The following has been recorded to performance unit award compensation expense for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
2013 Performance Unit Award compensation expense $4,081
 $409
 $2,863
2012 Performance Unit Award compensation expense 
 192
 1,870
   Total performance unit award compensation expense $4,081
 $601
 $4,733
Compensation expense for the 2012 Performance Unit Awards and the 2013 Performance Unit Awards is recognized in "General and administrative" in the Company's consolidated statements of operations, and the corresponding liabilities are included in "Other current liabilities" and "Other noncurrent liabilities" on the consolidated balance sheets.
f.    Defined contribution plan
The Company sponsors a 401(k) defined contribution plan for the benefit of substantially all employees at the date of hire. The plan allows eligible employees to make pre-tax and after-tax contributions up to 100% of their annual compensation, not to exceed annual limits established by the federal government. The Company makes matching contributions of up to 6% of an employee's compensation and may make additional discretionary contributions for eligible employees. Employees are 100% vested in the employer contributions upon receipt.
The following table presents the cost recognized for the Company's defined contribution plan for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Contributions $1,847
 $2,202
 $1,886

F-26

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


E—Note 7—Income taxes
Income taxes are accounted for under the asset and liability method. Deferred income taxes reflecttax assets and liabilities are recognized for the netfuture tax effects of temporaryconsequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities for financial reporting purposes and their respective tax bases and operating losses and tax credit carry-forwards. Under this method, deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the amounts used foryears in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income tax purposes.(loss) in the period that includes the enactment date.
The Company is subject to corporatefederal and state income taxes and the Texas marginfranchise tax. Income tax expense (benefit)benefit (expense) attributable to income (loss) from continuing operations for the periods presented consisted of the following:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Current taxes:            
Federal $
 $
 $
 $
 $
 $
State 
 
 
 
 
 
Deferred taxes:            
Federal 31,336
 58,727
 (27,345) 152,590
 (147,445) (64,034)
State 1,613
 647
 1,533
 24,355
 (16,841) (10,473)
Income tax expense (benefit) $32,949
 $59,374
 $(25,812)
Income tax benefit (expense) $176,945
 $(164,286) $(74,507)
The following presents the comprehensive benefit (expense) for income taxes for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Comprehensive benefit (expense) for income taxes allocable to:  
  
  
Continuing operations $176,945
 $(164,286) $(74,507)
Discontinued operations 
 
 (781)
Comprehensive benefit (expense) for income taxes $176,945
 $(164,286) $(75,288)
Income tax expense (benefit)benefit (expense) attributable to income (loss) from continuing operations before income taxes differed from amounts computed by applying the applicable federal income tax rate of 35% for the years ended December 31, 2015 and 2014 and 34% for the year ended December 31, 2013 to pre-tax income (loss) from operationsearnings as a result of the following:
  For the years ended December 31,
(in thousands) 2012 2011 2010
Income tax expense computed by applying the statutory rate $32,165
 $56,076
 $20,548
State income tax expense, net of federal tax benefit 102
 2,530
 1,118
Income from non-taxable entity 
 (30) (48)
Non-deductible stock-based compensation 1,177
 2,078
 418
Change in deferred tax valuation allowance (583) (660) (47,888)
Other items 88
 (620) 40
Income tax expense (benefit) $32,949
 $59,374
 $(25,812)
  For the years ended December 31,
(in thousands) 2015 2014 2013
Income tax benefit (expense) computed by applying the statutory rate $835,408
 $(150,450) $(64,969)
State income tax, net of federal tax benefit and increase in valuation allowance 13,975
 (11,099) (7,532)
Non-deductible stock-based compensation (256) (509) (1,070)
Stock-based compensation tax deficiency (3,274) (266) (559)
Increase in deferred tax valuation allowance (668,702) (1,139) (63)
Other items (206) (823) (314)
Income tax benefit (expense) $176,945
 $(164,286) $(74,507)
The effective tax rate for the Company's continuing operations was 7%, 38% and 39% for the years ended December 31, 2015, 2014 and 2013, respectively. The Company's effective tax rate is affected by changes in valuation allowances, recurring permanent differences and by discrete items that may occur in any given year, but are not consistent from year to year.
A valuation allowance is established to reduce deferred tax assets if it is determined that it is more likely than not that the related tax benefit will not be realized. On a quarterly basis, management evaluates the need for and adequacy of valuation allowances based on the expected realizability of the deferred tax assets and adjusts the amount of such allowances, if necessary. During 2015, in evaluating whether it was more likely than not that the Company’s net deferred tax assets were realized through future net income, management considered all available positive and negative evidence, including (i) its earnings history, (ii) its ability to recover net operating loss carry-forwards, (iii) the existence of significant proved oil and natural gas reserves, (iv) its ability to use tax planning strategies, (v) its current price protection utilizing oil and natural gas

F-27

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


hedges, (vi) its future revenue and operating cost projections and (vii) the current market prices for oil and natural gas. Based on all the evidence available, during the year ended December 31, 2015, management determined it was more likely than not that the net deferred tax assets were not realizable, therefore a valuation allowance of $676.0 million was recorded.
The impact of significant discrete items is separately recognized in the year in which the discrete items occur. The vesting of certain restricted stock awards could result in federal and state income tax expense or benefits related to the difference between the market price of the common stock at the date of vesting and the grant date. The exercise of stock option awards could result in federal and state income tax expense or benefits related to the difference between the fair value of the stock option at the grant date and the intrinsic value of the stock option when exercised. The tax impact resulting from vestings of restricted stock awards and exercise of option awards are discrete items. During the years ended December 31, 2015, 2014 and 2013, certain shares related to restricted stock awards vested at times when the Company's stock price was lower than the fair value of those shares at the time of grant. As a result, the income tax deduction related to such shares is less than the expense previously recognized for book purposes. During the years ended December 31, 2014 and 2013, certain restricted stock options were exercised. There were no comparable exercise of stock options during the year ended December 31, 2015. The income tax deduction related to the intrinsic value of the options was less than the expense previously recognized for book purposes. In accordance with GAAP, such shortfalls reduce additional paid-in capital to the extent windfall tax benefits have been previously recognized. However, the Company has not previously recognized any windfall tax benefits. Therefore, such shortfalls are included in income tax benefit (expense) attributable to continuing operations.
The following table presents the tax impact of these shortfalls for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Vesting of restricted stock $3,334
 $112
 $425
Exercise of restricted stock options 
 158
 150
Tax expense due to shortfalls $3,334
 $270
 $575
Significant components of the Company's net deferred tax assetsliability as of December 31 are as follows:
(in thousands) 2012 2011 2015 2014
Derivative financial instruments $7,108
 $3,551
Oil and natural gas properties and equipment (173,279) (87,138)
Oil and natural gas properties, midstream service assets and other fixed assets $306,997
 $(424,712)
Net operating loss carry-forward 222,017
 180,740
 479,022
 353,724
Derivatives (98,675) (121,365)
Stock-based compensation 11,597
 10,718
Equity method investee (31,711) (2,331)
Accrued bonus 3,502
 
 4,763
 3,256
Capitalized interest 2,525
 3,049
Materials and supplies impairment 1,647
 642
Other 3,347
 (926) 1,173
 1,373
 62,695
 96,227
Net deferred tax asset (liability) before valuation allowance 677,338
 (175,646)
Valuation allowance (66) (649) (677,338) (1,299)
Net deferred tax asset $62,629
 $95,578
Net deferred tax asset (liability)

 $
 $(176,945)

F-28

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


Net deferredDeferred tax assets and liabilities were classified in the consolidated balance sheets as of December 31 are as follows:
(in thousands) 2015 
2014(1)
 
Offset(1)
 
2014 new presentation(1)
Deferred tax asset $
 $
 $
 $
Deferred tax liability:   

    
Current 
 (71,191) 71,191
 
Noncurrent 
 (105,754) (71,191) (176,945)
Deferred tax liability $
 $(176,945) $
 $(176,945)
Net deferred tax liability $
 $(176,945) $
 $(176,945)

(1)See Note 14 for discussion regarding the new guidance early adopted by the Company that resulted in a balance sheet reclassification of the deferred tax liability from current to noncurrent for the year ended December 31, 2014.
The following presents the Company's federal net operating loss carry-forwards and their applicable expiration dates as of the period presented:
(in thousands) 2012 2011
Deferred tax asset $62,629
 $95,578
Deferred tax liability 
 
Net deferred tax assets $62,629
 $95,578
(in thousands) December 31, 2015
2026 $2,741
2027 38,651
2028 228,661
2029 101,932
2030 80,963
Thereafter 915,642
Total $1,368,590
The Company had federal net operating loss carry-forwards totaling approximately $632.6 million$1.4 billion and state of Oklahoma net operating loss carry-forwards totaling approximately $185.7$40.9 million atas of December 31, 2012.2015. These carry-forwards begin

F-19

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
expiring in 2026. As of December 31, 2012, 2011 and 2010

expiring in 2026. The Company maintains a valuation allowance to reduce certain deferred tax assets to amounts that are more likely than not to be realized. At December 31, 2012, a $0.07 million valuation allowance has been recorded against2015, the Company's charitable contribution carry-forward. The Company believes a portion of the federal and state net operating loss carry-forwards are not fully realizable. The Company considered all available evidence, both positive and negative, in determining whether, based on the weight of that evidence, a valuation allowance was needed. Such consideration included cumulative earnings in recent years, estimated future projected earnings based on existing reserves and projected future cash flows from its oil and natural gas reserves (including the timing of those cash flows), the reversal of deferred tax liabilities recorded atas of December 31, 2012 and2015, the Company's ability to capitalize intangible drilling costs, rather than expensing these costs in order to prevent an operating loss carry-forward from expiring unused. unused, and future projections of Oklahoma sourced income.
The deferredCompany's federal and state operating loss carry-forwards include windfall tax asset atdeductions from vestings of certain restricted stock awards and stock option exercises that were not recorded in the Company's income tax provision. The amount of windfall tax benefit recognized in additional paid-in capital is limited to the amount of benefit realized currently in income taxes payable. As of December 31, 2011 included a2015, the Company had suspended additional paid-in capital credits of $4.5 million related to windfall tax deductions. Upon realization of the net operating loss for Louisianacarry-forwards from such windfall tax deductions, the Company would record a benefit of $0.6up to $4.5 million. A full in additional paid-in capital.
The Company maintains a valuation allowance wasto reduce certain deferred tax assets to amounts that are more likely than not to be realized. As of December 31, 2015, a valuation allowance of $677.3 million has been recorded against the entire Louisiana net operating loss. A final return was filed for Louisiana asdeferred tax asset.
Prior to the Internal Consolidation, the Company is no longer doing business in that jurisdiction. The associated net operating loss deferred tax asset was written off and the valuation allowance was reversed as of December 31, 2012.
For periods beginning prior to July 1, 2011, separateits subsidiaries filed a federal and statecorporate income tax returns were filed for Laredo LLC, Laredo and Broad Oak. For periods beginningreturn on or after July 1, 2011,a consolidated federal and state income tax returns were and will be filed forbasis. Following the Company.
Internal Consolidation, the surviving entities file a single return. The Company's income tax returns for the years 20092012 through 20112015 remain open and subject to examination by federal tax authorities and/or the tax authorities in Oklahoma Texas and LouisianaTexas, which are the jurisdictions where the Company has or had operations. Additionally, the statute of limitations for examination of federal net operating loss carry-overscarry-forwards typically does not begin to run until the year the attribute is utilized in a tax return. In evaluating its current tax positions in order

F-29

Laredo Petroleum, Inc.
Notes to identify any material uncertain tax positions, the Company developed a policy in identifying uncertain tax positions and considers support for each tax position, industry standards, tax return disclosures and schedules, and the significance of each position. The Company had no material adjustments to its unrecognized tax benefits during the year ended December 31, 2012.
F—Derivativeconsolidated financial instrumentsstatements
1.

Note 8—Derivatives
a.    Commodity derivatives
The Company engages in derivative transactions such as collars,puts, swaps, putscollars and basis swaps to hedge price risks due to unfavorable changes in oil and natural gas prices related to its oil and natural gas production. As of December 31, 2012,2015, the Company had 4018 open derivative contracts with financial institutions nonethat extend from January 2016 to December 2017. None of whichthese contracts were designated as hedges for accounting purposes, which extend from January 2013 to December 2015.purposes. The contracts are recorded at fair value on the consolidated balance sheetsheets and any realized and unrealized gains and losses are recognized in current period earnings. Gains and losses on derivatives are reported on the consolidated statements of operations in the "Gain (loss) on derivatives" line items.
Each put transaction has an established floor price. The Company pays the counterparty a premium, which can be deferred until settlement, to enter into the put transaction. When the settlement price is below the floor price, the counterparty pays the Company an amount equal to the difference between the settlement price and the fixed price multiplied by the hedged contract volume. When the settlement price is above the floor price, the put option expires.
Each swap transaction has an established fixed price. When the settlement price is below the fixed price, the counterparty pays the Company an amount equal to the difference between the settlement price and the fixed price multiplied by the hedged contract volume. When the settlement price is above the fixed price, the Company pays its counterparty an amount equal to the difference between the settlement price and the fixed price multiplied by the hedged contract volume.
Each collar transaction has an established price floor and ceiling. When the settlement price is below the price floor established by these collars, the Company receives an amount from its counterparty equal to the difference between the settlement price and the price floor multiplied by the hedged contract volume. When the settlement price is above the price ceiling established by these collars, the Company pays its counterparty an amount equal to the difference between the settlement price and the price ceiling multiplied by the hedged contract volume.
Each swap transaction has an established fixed price. When the settlement price is above the fixed price, the Company pays its counterparty an amount equal to the difference between the settlement price and the fixed price multiplied by the hedged contract volume. When the settlement price is below the fixed price, the counterparty pays the Company an amount equal to the difference between the settlement price and the fixed price multiplied by the hedged contract volume.
Each put transaction has an established floor price. The Company pays the counterparty a premium in order to enter into the put transaction. When the settlement price is below the floor price, the counterparty pays the Company an amount equal to the difference between the settlement price and the fixed price multiplied by the hedged contract volume. When the settlement price is above the floor price, the put option expires.
Each natural gas basis swap transaction has an established fixed basis differential betweencorresponding to two index prices. Depending on the New York Mercantile Exchange ("NYMEX") gas futures and West Texas WAHA ("WAHA")difference of the two index gas price. When the NYMEX futures settlement price lessprices in relationship to the fixed WAHAbasis differential, is greater than the actual WAHA price, the difference multiplied by the hedged contract volume is paid to the Company by the counterparty. When the difference between the NYMEX futures settlement price less the fixed WAHA differential is less than the actual WAHA price, the Companyeither receives an amount from its counterparty, or pays the counterparty an amount to its counterparty, equal to the difference multiplied by the hedged contract volume.
EachDuring the first quarter of 2014, the Company unwound a physical commodity contract and the associated oil basis swap transaction has an established fixedfinancial derivative contract that hedged the differential between the West Texas Intermediate MidlandLight Louisiana Sweet Argus ("Midland") index crude oil price and the West Texas Intermediate Argus ("WTI")Brent International Petroleum Exchange index crude oil price. Whenprices. Prior to its unwind, the WTIphysical commodity contract qualified to be scoped out of mark-to-market accounting in accordance with the normal purchase and normal sale scope exemption. Once modified to settle financially in the unwind agreement, the contract ceased to qualify for the normal purchase and normal sale scope exemption, therefore requiring it to be marked-to-market. The Company received net proceeds of $76.7 million from the early termination of these contracts. The Company agreed to settle the contracts early due to the counterparty's decision to exit the physical commodity trading business.
During the year ended December 31, 2013, the following commodity derivative contracts were transferred to a buyer in connection with the Anadarko Basin Sale:
  
Aggregate
volumes
 
Swap
price
 Contract period
Natural gas (volumes in MMBtu):      
Swap 2,386,800
 $4.31
 August 2013 - December 2013
Swap 3,978,500
 $4.36
 January 2014 - December 2014

F-20F-30

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

price lessThe following commodity derivative contracts were unwound in connection with the fixed basis differential is greater than the actual Midland price, the difference multiplied by the hedged contract volume is paid to the Company by the counterparty. When the WTI price less the fixed basis differential is less than the actual Midland price, the difference multiplied by the hedged contract volume is paid by the Company to the counterparty.
DuringAnadarko Basin Sale during the year ended December 31, 2012, the Company entered into additional commodity contracts to hedge a portion of its estimated future production. The following table summarizes information about these additional commodity derivative contracts. When aggregating multiple contracts, the weighted average contract price is disclosed.2013:
 
Aggregate
volumes
 
Swap
price
 Floor price Ceiling price Contract period 
Aggregate
volumes
 Floor price Ceiling price Contract period
Oil (volumes in Bbl):          
Price collar 270,000
 $
 $90.00
 $126.50
 April 2012 - December 2012
Price collar 240,000
 $
 $90.00
 $118.35
 January 2013 - December 2013
Natural gas (volumes in MMBtu):        
Price collar 198,000
 $
 $70.00
 $140.00
 January 2014 - December 2014 2,200,000
 $4.00
 $7.05
 September 2013 - December 2013
Put 360,000
 $
 $75.00
 $
 January 2014 - December 2014 2,200,000
 $4.00
 $
 September 2013 - December 2013
Put 180,000
 $
 $75.00
 $
 January 2014 - December 2014
Price collar 252,000
 $
 $75.00
 $135.00
 January 2015 - December 2015
Put 360,000
 $
 $75.00
 $
 January 2015 - December 2015
Put 96,000
 $
 $75.00
 $
 January 2015 - December 2015
Basis swap 730,000
 $2.60
 $
 $
 February 2013 - January 2014
Natural gas (volumes in MMBtu):          
Swap 700,000
 $2.72
 $
 $
 April 2012 - October 2012
Price collar 700,000
 $
 $3.25
 $3.90
 April 2013 - October 2013 3,480,000
 $4.00
 $7.00
 January 2014 - December 2014
Price collar 8,760,000
 $
 $3.00
 $5.00
 January 2013 - December 2013 1,800,000
 $4.00
 $7.05
 January 2014 - December 2014
Price collar 11,160,000
 $
 $3.00
 $5.50
 January 2014 - December 2014 1,680,000
 $4.00
 $7.05
 January 2014 - December 2014
Price collar 15,480,000
 $
 $3.00
 $6.00
 January 2015 - December 2015 1,560,000
 $3.00
 $5.50
 January 2014 - December 2014
Price collar 2,520,000
 $3.00
 $6.00
 January 2015 - December 2015
Price collar 2,400,000
 $3.00
 $6.00
 January 2015 - December 2015
Price collar 2,400,000
 $3.00
 $6.00
 January 2015 - December 2015
The following represents cash settlements received (paid) for matured derivatives and for early terminations and modifications of derivatives for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Cash settlements received for matured commodity derivatives $255,281
 $28,241
 $4,046
Cash settlements paid for matured interest rate swaps 
 
 (301)
Early terminations and modification of commodity derivatives received(1)
 
 76,660
 6,008
Cash settlements received for derivatives, net $255,281
 $104,901
 $9,753

(1)During the year ended December 31, 2013, the Company received $6.0 million, net of $2.2 million in deferred premiums in settlements from early terminations and modification of commodity derivative contracts.

F-21F-31

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

The following table summarizes open positions as of December 31, 2012,2015, and represents, as of such date, derivatives in place through December 31, 2015,2017 on annual production volumes:
  
Year
2013
 
Year
2014
 Year
2015
Oil Positions:      
Puts:      
Hedged volume (Bbl) 1,080,000
 540,000
 456,000
Weighted average price ($/Bbl) $65.00
 $75.00
 $75.00
Swaps:      
Hedged volume (Bbl) 600,000
 
 
Weighted average price ($/Bbl) $96.32
 $
 $
Collars:      
Hedged volume (Bbl) 768,000
 726,000
 252,000
Weighted average floor price ($/Bbl) $79.38
 $75.45
 $75.00
Weighted average ceiling price ($/Bbl) $121.67
 $129.09
 $135.00
Basis swaps:      
Hedged volume (MMBtu) 668,000
 62,000
 
Weighted average price ($/MMBtu) $2.60
 $2.60
 $
Natural Gas Positions:      
Puts:      
Hedged volume (MMBtu) 6,600,000
 
 
Weighted average price ($/MMBtu) $4.00
 $
 $
Collars:      
Hedged volume (MMBtu) 16,060,000
 18,120,000
 15,480,000
Weighted average floor price ($/MMBtu) $3.42
 $3.38
 $3.00
Weighted average ceiling price ($/MMBtu) $5.79
 $6.09
 $6.00
Basis swaps(1):
      
Hedged volume (MMBtu) 1,200,000
 
 
Weighted average price ($/MMBtu) $0.33
 $
 $
  Year
2016
 Year
2017
Oil positions:(1)
    
Puts:    
Hedged volume (Bbl) 1,296,000
 
Weighted-average price ($/Bbl) $45.00
 $
Swaps:    
Hedged volume (Bbl) 1,573,800
 
Weighted-average price ($/Bbl) $84.82
 $
Collars:    
Hedged volume (Bbl) 3,654,000
 2,628,000
Weighted-average floor price ($/Bbl) $73.99
 $77.22
Weighted-average ceiling price ($/Bbl) $89.63
 $97.22
Totals: 
 
Total volume hedged with floor price (Bbl) 6,523,800
 2,628,000
Weighted-average floor price ($/Bbl) $70.84
 $77.22
Total volume hedged with ceiling price (Bbl) 5,227,800
 2,628,000
Weighted-average ceiling price ($/Bbl) $88.18
 $97.22
Natural gas positions:(2)
    
Collars:    
Hedged volume (MMBtu) 18,666,000
 5,475,000
Weighted-average floor price ($/MMBtu) $3.00
 $3.00
Weighted-average ceiling price ($/MMBtu) $5.60
 $4.00

(1)
The cash settlement priceOil derivatives are settled based on the average of the Company's naturaldaily settlement prices for the First Nearby Month of the West Texas Intermediate NYMEX Light Sweet Crude Oil Futures Contract for each NYMEX Trading Day during each month ("WTI NYMEX").
(2)Natural gas basis swaps is calculatedderivatives are settled based on the difference between the Company's natural gas futures contracts that settle on the NYMEX index and the NYMEXInside FERC index price atfor West Texas Waha for the time of settlement. At December 31, 2012, the Company had 20,000 MMBtu for 2013 in basis swaps that did not have corresponding volumes hedged with a NYMEX index price.calculation period.
The natural gas derivatives are settled based on NYMEX gas futures, the Northern Natural Gas Co. Demarcation price or the Panhandle Eastern Pipe Line spot price of natural gas for the calculation period. The oil derivatives are settled based on the month's average daily NYMEX price of West Texas Intermediate Light Sweet Crude Oil. Each natural gas basis swap transaction is settled based on the differential between the NYMEX gas futures and WAHA index gas price. Each oil basis swap transaction is settled based on the differential between the West Texas Intermediate Midland Argus crude oil price and the West Texas Intermediate Argus crude oil price.
2.b.    Interest rate derivatives
The Company is exposed to market risk for changes in interest rates related to any drawn amount on its Senior Secured Credit Facility. InterestIn prior periods, interest rate derivative agreements arewere used to manage a portion of the exposure related to changing interest rates by converting floating-rate debt to fixed-rate debt. If LIBOR isthe London Interbank Offered Rate ("LIBOR") was lower than the fixed rate in the contract, the Company iswas required to pay the counterparties the difference, and conversely, the counterparties arewere required to pay the Company if LIBOR iswas higher than the fixed rate in the contract. For the interest rate cap below, the Company paid a premium of $0.2 million in 2010 upon entering into the agreement. The Company did not designate the interest rate derivatives as cash flow hedges; therefore, the changes in fair value of these instruments arewere recorded in current earnings.

F-22

Laredo Petroleum Holdings, Inc.
Notes to In prior years, the consolidated financial statements
December 31, 2012, 2011Company had one interest rate swap and 2010

The following presents the settlement termsone interest rate cap outstanding for a notional amount of the$100.0 million with fixed pay rates of 1.11% and 3.00%, respectively, until their expiration in September 2013. No interest rate derivatives atwere in place as of December 31, 2012:
2015 or 2014.
(in thousands except rate data) 
Year
2013
 Expiration date
Notional amount $50,000
  
Fixed rate 1.11% September 13, 2013
Notional amount $50,000
  
Cap rate 3.00% September 13, 2013
  Total $100,000
  
3.c.    Balance sheet presentation
In accordance with the Company's standard practice, its commodity derivatives are subject to counterparty netting under agreements governing such derivatives. The Company's oil and natural gas commodity derivatives and interest rate derivatives are presented on a net basis in "Derivative financial instruments" inas "Derivatives" on the consolidated balance sheets.
The following summarizes See Note 9.a for a summary of the fair value of derivatives outstanding on a gross basis as of December 31:
basis.
(in thousands) 2012 2011
Assets:    
Commodity derivatives:    
Oil derivatives $16,219
 $16,026
Natural gas derivatives 17,896
 34,019
Interest rate derivatives 
 11
  $34,115
 $50,056
Liabilities:    
Commodity derivatives:    
Oil derivatives(1)
 $21,308
 $28,044
Natural gas derivatives(2)
 10,413
 6,832
Interest rate derivatives 277
 1,991
  $31,998
 $36,867

(1)
The oil derivatives fair value is presented net of deferred premium liability of $18.3 million and $13.4 million at December 31, 2012 and 2011, respectively.
(2)
The natural gas derivatives fair value is presented net of deferred premium liability of $6.4 million and $5.4 million at December 31, 2012 and 2011, respectively.
By using derivative instrumentsderivatives to economically hedge exposures to changes in commodity prices and interest rates, the Company exposes itself to credit risk and market risk. For the Company, market risk is the exposure to changes in the market price of oil and natural gas, which are subject to fluctuations from a variety of factors, including changes in supply and demand. Credit risk is the failure of the counterparty to perform under the terms of the derivative contract. When the fair value of a derivative contract is positive, the counterparty owes the Company, which createsthereby creating credit risk. The Company's counterparties are participants in its the

F-32

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


Senior Secured Credit Facility, which is secured by the Company's oil and natural gas reserves (as described in Note C);reserves; therefore, the Company is not required to post any collateral. The Company does not require collateral from its derivative counterparties. The Company minimizes the credit risk in derivative instrumentsderivatives by: (i) limiting its exposure to any single counterparty;counterparty, (ii) entering into derivative instrumentsderivatives only with counterparties that are also lenders in the Company's Senior Secured Credit Facility and meet the Company's minimum credit quality standard or have a guarantee from an affiliate that meets the Company's minimum credit quality standard;standard and (iii) monitoring the creditworthiness of the Company's counterparties on an ongoing basis. In accordance with the Company's standard practice, its commodity and interest rate derivatives are subject to counterparty netting under agreements governing such derivatives and, therefore, the risk of such loss is somewhat mitigated at December 31, 2012.
4.    Gain (loss) on derivatives
Gains and losses on derivatives are reported on the consolidated statements of operations in the respective "Realized and unrealized gain (loss)" amounts. Realized gains (losses) represent amounts related to the settlement of derivative instruments, and for commodity derivatives, are aligned with the underlying production. Unrealized gains (losses) represent the change in fair value of the derivative instruments and are non-cash items.

F-23

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

The following represents the Company's reported gains and losses on derivative instruments for the periods presented:
  For the years ended December 31,
(in thousands) 2012 2011 2010
Realized gains (losses):      
Commodity derivatives $27,025
 $3,719
 $22,701
Interest rate derivatives (2,115) (4,873) (5,238)
  24,910
 (1,154) 17,463
Unrealized gains (losses):      
Commodity derivatives (18,225) 17,328
 (11,511)
Interest rate derivatives 1,703
 3,562
 (137)
  (16,522) 20,890
 (11,648)
Total gains (losses):      
Commodity derivatives 8,800
 21,047
 11,190
Interest rate derivatives (412) (1,311) (5,375)
  $8,388
 $19,736
 $5,815
G—Note 9—Fair value measurements
The Company accounts for its oil and natural gas commodity derivatives and, in prior periods, its interest rate derivatives, at fair value. The fair value of derivative financial instrumentsderivatives is determined utilizing pricing models for similar instruments. The models use a variety of techniques to arrive at fair value, including quotes and pricing analysis. Inputs to the pricing models include publicly available prices and forward curves generated from a compilation of data gathered from third parties.
The Company has categorized its assets and liabilities measured at fair value, based on the priority of inputs to the valuation technique, into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3).
Assets and liabilities recorded at fair value on the audited consolidated balance sheets are categorized based on the inputs to the valuation techniques as follows:
Level 1—Assets and liabilities recorded at fair value for which values are based on unadjusted quoted prices for identical assets or liabilities in an active market that management has the ability to access. Active markets are considered to be those in which transactions for the assets or liabilities occur in sufficient frequency and volume to provide pricing information on an ongoing basis.
Level 2—Assets and liabilities recorded at fair value for which values are based on quoted prices in markets that are not active or model inputs that are observable either directly or indirectly for substantially the full term of the assetassets or liability.liabilities. Substantially all of these inputs are observable in the marketplace throughout the full term of the price risk management instrument and can be derived from observable data or supported by observable levels at which transactions are executed in the marketplace.
Level 3—Assets and liabilities recorded at fair value for which values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. Unobservable inputs that are not corroborated by market data. These inputs reflect management's own assumptions about the assumptions a market participant would use in pricing the asset or liability.
When the inputs used to measure fair value fall within different levels of the hierarchy in a liquid environment, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company conducts a review of fair value hierarchy classifications on an annual basis. Changes in the observability of valuation inputs may result in a reclassification offor certain financial assets or liabilities. Transfers between fair value hierarchy levels are recognized and reported in the period in which the transfer occurred. No transfers between fair value hierarchy levels occurred during the yearyears ended December 31, 2012.2015, 2014 or 2013.

F-24F-33

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

1.a. Fair value measurement on a recurring basis
The following presentstables summarize the Company's fair value hierarchy by commodity on a gross basis and the net presentation on the consolidated balance sheets for derivative assets and liabilities measured at fair value on a recurring basis at December 31, 2012 and 2011.as of the periods presented:
(in thousands) Level 1 Level 2 Level 3 
Total fair
value
As of December 31, 2012:        
Commodity derivatives $
 $27,103
 $
 $27,103
Deferred premiums 
 
 (24,709) (24,709)
Interest rate derivatives 
 (277) 
 (277)
Total $
 $26,826
 $(24,709) $2,117
(in thousands) Level 1 Level 2 Level 3 
Total fair
value
As of December 31, 2011:        
Commodity derivatives $
 $34,037
 $
 $34,037
Deferred premiums 
 
 (18,868) (18,868)
Interest rate derivatives 
 (1,980) 
 (1,980)
Total $
 $32,057
 $(18,868) $13,189
(in thousands)
Level 1
Level 2
Level 3
Total gross fair value
Amounts offset
Net fair value presented on the consolidated balance sheets
As of December 31, 2015:
 
 
 




 
Assets

















Current:

















Oil derivatives
$

$194,940

$

$194,940

$

$194,940
Natural gas derivatives


13,166



13,166



13,166
Oil deferred premiums








(9,301)
(9,301)
Natural gas deferred premiums











Noncurrent:

















Oil derivatives
$

$80,302

$

$80,302

$

$80,302
Natural gas derivatives


2,459



2,459



2,459
Oil deferred premiums








(4,877)
(4,877)
Natural gas deferred premiums








(441)
(441)
Liabilities

















Current:

















Oil derivatives
$

$

$

$

$

$
Natural gas derivatives











Oil deferred premiums




(9,301)
(9,301)
9,301


Natural gas deferred premiums











Noncurrent:

















Oil derivatives
$

$

$

$

$

$
Natural gas derivatives











Oil deferred premiums




(4,877)
(4,877)
4,877


Natural gas deferred premiums




(441)
(441)
441


Net derivative position
$

$290,867

$(14,619)
$276,248

$

$276,248


F-34

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


(in thousands) Level 1 Level 2 Level 3 Total gross fair value Amounts offset Net fair value presented on the consolidated balance sheets
As of December 31, 2014:            
Assets            
Current:            
Oil derivatives $
 $190,303
 $
 $190,303
 $
 $190,303
Natural gas derivatives 
 9,647
 
 9,647
 
 9,647
Oil deferred premiums 
 
 
 
 (4,653) (4,653)
Natural gas deferred premiums 
 
 
 
 (696) (696)
Noncurrent: 

 

 

 

 

 

Oil derivatives $
 $117,963
 $
 $117,963
 $
 $117,963
Natural gas derivatives 
 3,646
 
 3,646
 
 3,646
Oil deferred premiums 
 
 
 
 (3,821) (3,821)
Natural gas deferred premiums 
 
 
 
 
 
Liabilities 

 

 

 

 

 

Current: 

 

 

 

 

 

Oil derivatives $
 $
 $
 $
 $
 $
Natural gas derivatives 
 
 
 
 
 
Oil deferred premiums 
 
 (4,768) (4,768) 4,653
 (115)
Natural gas deferred premiums 
 
 (696) (696) 696
 
Noncurrent: 

 

 

 

 

 

Oil derivatives $
 $
 $
 $
 $
 $
Natural gas derivatives 
 
 
 
 
 
Oil deferred premiums 
 
 (3,821) (3,821) 3,821
 
Natural gas deferred premiums 
 
 
 
 
 
Net derivative position $
 $321,559
 $(9,285) $312,274
 $
 $312,274
These items are included in "Derivative financial instruments"as "Derivatives" on the consolidated balance sheets. Significant Level 2 assumptions associated with the calculation of discounted cash flows used in the "mark-to-market"mark-to-market analysis of commodity derivatives include the NYMEX natural gas and crude oil prices,each derivative contract's corresponding commodity index price, appropriate risk adjusted discount rates and other relevant data. Significant Level 2 assumptions associated with the calculation of discounted cash flows used in the "mark-to-market" analysis of interest rate swaps include the interest rate curves, appropriate risk adjustedrisk-adjusted discount rates and other relevant data.
The Company's deferred premiums associated with its commodity derivative contracts are categorized inas Level 3, as the Company utilizes a net present value calculation to determine the valuation. They are considered to be measured on a recurring basis as the derivative contracts they derive from are measured on a recurring basis. As commodity derivative contracts containing deferred premiums are entered into, the Company discounts the associated deferred premium to its net present value at the contract trade date, using the Senior Secured Credit Facility rate at the trade date (historical input rates range from 2.00%1.69% to 3.56%), and then amortizingrecords the change in net present value intoto interest expense over the period from trade until the final settlement date at the end of the contract. After this initial valuation, the net present value of each deferred premium is not adjusted,adjusted; therefore, significant increases (decreases) in the Senior Secured Credit Facility rate would result in a significantly lower (higher) fair value measurement for each new deal containingcontract entered into that contained a deferred premium entered into;premium; however, the valuation for the dealsdeferred premiums already recorded would remain unaffected. While the Company believes the sources utilized to arrive at the fair value estimates are reliable, different sources or methods could have yielded different fair value estimates; therefore, on a quarterly basis, the valuation is compared to counterparty valuations and third partya third-party valuation of the deferred premiums for reasonableness.

F-35

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


The following table presents actual cash payments required for deferred premium contracts in place at December 31, 2012, andpremiums for the calendar years following:presented:
(in thousands)   December 31, 2015
2013 $10,904
2014 8,135
2015 6,087
2016 357
 $8,629
2017 5,796
2018 426
Total $25,483
 $14,851

F-25

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

A summary of the changes in assets classified as Level 3 measurements for the periods presented are as follows:
  For the year ended December 31, 2012
(in thousands) Derivative
option
contracts
 Deferred
premiums
Balance of Level 3 at beginning of period(1)
 $
 $(18,868)
Realized and unrealized gains included in earnings 
 
Amortization of deferred premiums 
 (668)
Total purchases and settlements:    
Purchases 
 (11,291)
Settlements 
 6,118
Balance of Level 3 at end of period $
 $(24,709)
Change in unrealized losses attributed to earnings relating to derivatives still held at end of period $
 $
 For the year ended December 31, 2011 For the years ended December 31,
(in thousands) Derivative
option
contracts
 Deferred
premiums
 2015 2014 2013
Balance of Level 3 at beginning of period $20,026
 $(12,495) $(9,285) $(12,684) $(24,709)
Realized and unrealized gains (losses) included in earnings 5,323
 
Amortization of deferred premiums 
 (471)
Change in net present value of deferred premiums for derivatives (203) (220) (462)
Total purchases and settlements:          
Purchases 
 (5,988) (10,298) (3,800) 
Settlements 
 86
Transfers out of Level 3(1)(2)
 (25,349) 
Settlements(1)
 5,167
 7,419
 12,487
Balance of Level 3 at end of period $
 $(18,868) $(14,619) $(9,285) $(12,684)
Change in unrealized gains attributed to earnings relating to derivatives still held at end of period $
 $

(1)The Company transferred the commodity derivative option contracts out of Level 3 duringsettlement amount for the year ended December 31, 2011 due to2013 includes $2.2 million in deferred premiums which were settled net with the Company's ability to utilize transparent forward price curves and volatilities published and available through independent third party vendors. As a result, the Company transferred positionsearly terminated contracts from Level 3 to Level 2 as the significant inputs used to calculate the fair value are all observable.
(2)The Company's policy is to recognize transfers in and transfers out as of the actual date of the event or change in circumstances that caused the transfer.which they derive.
2.b. Fair value measurement on a nonrecurring basis
The Company accounts for additions to its asset retirement obligation (see Note B.12) and the impairment of long-lived assets, (see Note B.19), if any, at fair value on a nonrecurring basis in accordance with GAAP.basis. For purposes of fair value measurement, it was determined that the impairment of long-lived assets and the additions to the asset retirement obligation areis classified as Level 3, based on the use of internally developed cash flow models. No impairments of long-lived assets were recorded in the years ended December 31, 2012 or 2010. See Note B.192.j for discussion of the Company's impairment of line-fill, materials and supplies inand other fixed assets for the year ended December 31, 2011.periods presented.
Inherent in the fair value calculation of asset retirement obligations are numerous assumptions and judgments including, in addition to those noted above, the ultimate settlement of these amounts, the ultimate timing of such settlement, and changes in legal, regulatory, environmental and political environments. To the extent future revisions to these assumptions impact the fair value of the existing asset retirement obligation liability, a corresponding adjustment will be made to the asset balance.

F-26

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

Asset retirement obligations.    The accounting policies for asset retirement obligations are discussed in Note B.12, including a reconciliation of the Company's asset retirement obligation. The fair value of additions to the asset retirement obligation liability is measured using valuation techniques consistent with the income approach, which converts future cash flows to a single discounted amount. Significant inputs to the valuation include: (i) estimated plug and abandonment cost per well based on Company experience; (ii) estimated remaining life per well based on the reserve life per well; (iii) future inflation factors; and (iv) the Company's average credit adjusted risk free rate.
Impairment of oil and natural gas properties.The accounting policies for impairment of oil and natural gas properties are discussed in Note B.19.2.g. Significant inputs included in the calculation of discounted cash flows used in the impairment analysis include the Company's estimate of operating and development costs, anticipated production of provedevaluated reserves and other relevant data. See Note 2.g for discussion regarding the prices used in the calculation of discounted cash flows and the Company's second, third and fourth-quarter 2015 full cost ceiling impairments.
H—Note 10—Net income (loss) per share
Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding for the period. Diluted net income (loss) per share reflects the potential dilution of non-vested restricted stock awards, performance share awards and outstanding restricted stock options. For the year ended December 31, 2015, all of these potentially dilutive items were anti-dilutive due to the Company's net loss and, therefore, were excluded from the calculation of diluted net income (loss) per share.
The effects of the Company's then outstanding restricted stock options that were granted in February 2014 to purchase 336,140 shares of common stock at $25.60 per share and in February 2012 to purchase 280,626 shares of common stock at $24.11 per share were excluded from the calculation of diluted net income per share for each of the years ended December 31, 2014 and 2013, because the exercise prices of these options were greater than the average market price during the period, and, therefore, the inclusion of these outstanding options would have been anti-dilutive.
The effect of the Company's outstanding restricted stock options that were granted in February 2013 to purchase 750,338 shares of common stock at $17.34 per share was excluded from the calculation of diluted net income per share for the years ended December 31, 2014 and 2013, because, utilizing the treasury method, the sum of the assumed proceeds exceeded the average stock price during the period and, therefore, the inclusion of these outstanding options would have been anti-dilutive. For the year ended December 31, 2014, the 2014 Performance Share Awards' total shareholder return was below their agreement's payout threshold, and therefore the 2014 Performance Share Awards were excluded from the calculation of diluted net income per share. There were no outstanding performance share awards in 2013.

F-36

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


The following is the calculation of basic and diluted weighted-average common shares outstanding and net income (loss) per share for the periods presented:
  For the years ended December 31,
(in thousands, except for per share data) 2015 2014 2013
Net income (loss) (numerator):      
Income (loss) from continuing operations—basic and diluted $(2,209,936) $265,573
 $116,577
Income from discontinued operations, net of tax—basic and diluted 
 
 1,423
Net income (loss)—basic and diluted $(2,209,936) $265,573
 $118,000
Weighted-average common shares outstanding (denominator):      
Weighted-average common shares outstanding—basic(1)
 199,158
 141,312
 132,490
Non-vested restricted stock awards 
 2,242
 1,888
Weighted-average common shares outstanding—diluted 199,158
 143,554
 134,378
Net income (loss) per share:      
Basic:      
 Income (loss) from continuing operations $(11.10) $1.88
 $0.88
 Income from discontinued operations, net of tax 
 
 0.01
  Net income (loss) per share $(11.10) $1.88
 $0.89
       
Diluted:      
 Income (loss) from continuing operations $(11.10) $1.85
 $0.87
 Income from discontinued operations, net of tax 
 
 0.01
  Net income (loss) per share $(11.10) $1.85
 $0.88

(1)For the year ended December 31, 2015, weighted-average common shares outstanding used in the computation of basic and diluted net loss per share attributable to stockholders was computed taking into account the March 2015 Equity Offering. For the year ended December 31, 2013, weighted-average common shares outstanding used in the computation of basic and diluted net income per share attributable to stockholders was computed taking into account the August 2013 Equity Offering.
Note 11—Credit risk
The Company's oil, NGL and natural gas sales are made to a variety of purchasers, including intrastate and interstate pipelines or their marketing affiliates and independent marketing companies. The Company's joint operations accounts receivable are from a number of oil and natural gas companies, partnerships, individuals and others who own interests in the oil and natural gas properties operated by the Company. The Company's sales of purchased oil are made to one customer. Management believes that any credit risk imposed by a concentration in the oil and natural gas industry is offset by the creditworthiness of the Company's customer base and industry partners. The Company routinely assesses the recoverability of all material trade and other receivables to determine collectability.
The Company uses derivative instrumentsderivatives to hedge its exposure to oil and natural gas price volatility and, in prior periods, its exposure to interest rate risk associated with the Senior Secured Credit Facility. These transactions expose the Company to potential credit risk from its counterparties. In accordance with the Company's standard practice, its derivative instrumentsderivatives are subject to counterparty netting under agreements governing such derivatives andderivatives; therefore, the credit risk associated with its derivative counterparties is somewhat mitigated. See Note FNotes 2.f, 8 and 9 for additional information regarding the Company's derivative instruments.derivatives.
For the year ended December 31, 2012,2015, the Company had threetwo customers that accounted for 34.0%, 12.3%,37.5% and 10.0%20.3% of total revenues,oil, NGL and natural gas sales, with the same threeeach customer accounting for 35.3% and 23.7%, respectively, of oil, NGL and natural gas sales accounts receivable, and two other customers accounting for 25.7%, 13.0%,18.5% and 10.7% of oil, NGL and anothernatural gas sales accounts receivable as of December 31, 2015. For the year ended December 31, 2014, the Company had two customers that accounted for 36.0% and 13.7% of total oil, NGL and natural gas sales, with each customer accounting for 13.7%16.4% and 22.5%, respectively, of oil, NGL and natural gas sales accounts receivable, and three other customers accounting for 13.5%, 12.5% and 11.6% of oil, NGL and natural gas sales accounts receivable as of December 31, 2014. For the year ended December 31, 2013, the Company had three customers that accounted for 28.3%, 11.7% and 11.7% of total oil, NGL and natural gas sales, with two of the three

F-37

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


customers accounting for 36.0% and 15.7% of oil and natural gas sales accounts receivable as of December 31, 2012. For2013. These customers and percentages reported are related to the year endedCompany's exploration and production segment, see Note 17.
As of December 31, 2011,2015, the Company had three customers that accounted for 36.1%, 16.2% and 12.9% of total revenues, with the same three customers accounting for 31.6%, 13.9% and 15.9% and another customer accounting for 11.0% of oil and natural gas sales accounts receivable as of December 31, 2011. For the year ended December 31, 2010, the Company had three customers that accounted for 33.1%, 19.0%, and 14.5% of total revenues, with the same three customers accounting for 41.3%, 16.2%, and 14.0% of oil and natural gas sales accounts receivable as of December 31, 2010.
For the year ended December 31, 2012, the Company had two partners whose joint operations accounts receivable accounted for 66.2%18.9% and 17.0%17.1% of the Company's total joint operations accounts receivable. For the year endedAs of December 31, 2011,2014, the Company had threetwo partners whose joint operations accounts receivable accounted for 30.4%, 17.4%20.5% and 16.1%13.2% of the Company's total joint operations accounts receivable. These customers and percentages reported are related to the Company's exploration and production segment, see Note 17.
For the year ended December 31, 2015, the Company had one customer that accounted for 100.0% of total sales of purchased oil, with the same customer accounting for 99.6% of purchased oil and other product sales receivable as of December 31, 2015. For the year ended December 31, 2014, the Company had one customer that accounted for 100.0% of total sales of purchased oil, with the same customer accounting for 97.3% of purchased oil and other product sales receivable as of December 31, 2014. There were no comparable sales of purchased oil for the year ended December 31, 2013 and correspondingly, there was no purchased oil and other product sales receivable as of December 31, 2013. The customer and percentages reported relate to the Company's midstream and marketing segment, see Note 17.
The Company's cash balances are insured by the FDIC up to $250,000$250,000 per bank. The Company had a cash balancebalances on deposit with a certain bank in the Senior Secured Credit Facility bank group atbanks as of December 31, 2012,2015, which exceeded the balance insured by the FDIC in the amount of $49.3$51.3 million. Management believes that the risk of loss is mitigated by the bank'sbanks' reputation and financial position.

F-27

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

2. Related-party transactions
The following table summarizes the net oil and natural gas sales (oil and natural gas sales less production taxes) received from the Company's related-party and included in the consolidated statements of operation for the periods presented:
  For the years ended December 31,
(in thousands) 2012 2011 2010
Net oil and natural gas sales(1)
 $71,916
 $79,300
 $35,000
The following table summarizes the amounts included in oil and natural gas sales receivable from the Company's related party in the consolidated balance sheets for the periods presented:
  December 31,
(in thousands) 2012 2011
Oil and natural gas sales receivable(1)
 $6,244
 $6,845

(1)The Company has a gas gathering and processing arrangement with affiliates of Targa Resources, Inc. ("Targa"). Warburg Pincus IX, a majority stockholder of Laredo Holdings, and other affiliates of Warburg Pincus LLC, hold investment interests in Targa. One of Laredo Holdings' directors is on the board of directors of affiliates of Targa.
I—Note 12—Commitments and contingencies
1.a.    Lease commitments
The Company leases equipment and office space under operating leases expiring on various dates through 20182027. Minimum annual lease commitments at December 31, 2012, and for the calendar years followingpresented are:
(in thousands)   December 31, 2015
2013 $1,675
2014 1,570
2015 1,216
2016 785
 $3,087
2017 520
 3,244
2018 3,160
2019 2,408
2020 1,294
Thereafter 446
 8,217
Total $6,212
 $21,410
The following has been recorded to rent expense for the periods presented:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Rent expense $1,339
 $1,175
 $946
 $2,880
 $3,042
 $1,923
The Company's office space lease agreements contain scheduled escalation in lease payments during the term of the lease. In accordance with GAAP, the Company records rent expense on a straight-line basis and a deferred lease liability for the difference between the straight-line amount and the actual amounts of the lease payments. Rent expense is included in the consolidated statements of operations in the "General and administrative" line item.
2.b.    Litigation
TheFrom time to time the Company may beis involved in legal proceedings and/or ismay be subject to industry rulings that could bring rise to claims in the ordinary course of business. The Company has concluded that the likelihood is remote that the ultimate resolution of any pending litigation or pending claims will be material or have a material adverse effect on the Company's business, financial position, results of operations or liquidity.

3.
F-38

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


c.    Drilling contracts
The Company has committed to several short-term drilling contracts with various third parties in order to complete its various drilling projects. The contracts contain an early termination clauseclauses that requiresrequire the Company to potentially pay significant

F-28

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

penalties to the third partyparties should the Company cease drilling efforts. These penalties could significantlywould negatively impact the Company's financial statements upon early contract termination. Thesetermination, especially if a significant number of such contracts were terminated early in their respective terms. In the fourth quarter of 2014, the Company announced a reduced 2015 capital expenditure budget compared to 2014. As a result, the Company began releasing rigs as drilling contracts came close to expiration and incurred charges of $0.5 million which were recorded for the year ended December 31, 2014 on the consolidated statements of operations as "Drilling rig fees." No comparable amounts were recorded in the years ended December 31, 2015 or 2013. Future commitments of $10.3 million as of December 31, 2015 are not recorded in the accompanying consolidated balance sheets. Management does not currently anticipate the early termination of any existing contracts in 2016 that would result in a substantial penalty.
d.    Firm sale and transportation commitments
The Company has committed to deliver for sale or transportation fixed volumes under certain contractual arrangements that specify the delivery of a fixed and determinable quantity. If not fulfilled, the Company is subject to minimal volume penalties. These commitments are normal and customary for the Company's business. Future commitments of $425.7 million as of December 31, 20122015 are $16.8 million. No stacked rig fees were incurrednot recorded in 2012, 2011the accompanying consolidated balance sheets. The Company's production has been equivalent or 2010.greater than its delivery commitments during the three most recent years, and management expects such production will continue to exceed the Company's future commitments. However, in certain instances, the Company has used spot market purchases to meet its commitments in certain locations or due to favorable pricing. Management doesanticipates continuing this practice in the future. Also, if production is not anticipate canceling any drilling contracts or discontinuing drilling efforts in 2013.sufficient to satisfy the Company's delivery commitments, the Company can and may use spot market purchases to fulfill the commitments.
4.e.    Federal and state regulations
Oil and natural gas exploration, production and related operations are subject to extensive federal and state laws, rules and regulations. Failure to comply with these laws, rules and regulations can result in substantial penalties. The regulatory burden on the oil and natural gas industry increases the cost of doing business and affects profitability. The Company believes that it is in compliance with currently applicable federal and state regulations related to oil and thesenatural gas exploration and production, and that compliance with the current regulations will not have a material adverse impact on the financial position or results of operations of the Company. Because theseThese rules and regulations are frequently amended or reinterpreted,reinterpreted; therefore, the Company is unable to predict the future cost or impact of complying with these regulations.
f.    Other commitments
See Notes 2.u, 16.a and 19.b for the amount of and discussion regarding outstanding commitments to the Company's non-consolidated variable interest entity ("VIE").
J—Defined contribution planNote 13—Restructuring
Following the fourth-quarter 2014 drop in oil prices, in an effort to reduce costs and to better position the Company for ongoing efficient growth, on January 20, 2015, the Company executed a company-wide restructuring and reduction in force (the "RIF") that included (i) the relocation of certain employees from the Company's Dallas, Texas area office to the Company's other existing offices in Tulsa, Oklahoma and Midland, Texas; (ii) closing the Company's Dallas, Texas area office; (iii) a workforce reduction of approximately 75 employees and (iv) the release of 24 contract personnel. The RIF was communicated to employees on January 20, 2015 and was generally effective immediately. The Company's compensation committee approved the RIF and the related severance package. The Company sponsorsincurred $6.0 million in expenses during the year ended December 31, 2015 related to the RIF. There were no comparative amounts recorded in the years ended December 31, 2014 or 2013.
Note 14—Recently issued accounting standards
In November 2015, the Financial Accounting Standards Board ("FASB") issued new guidance in Topic 740, Income Taxes, which seeks to simplify the presentation of deferred income taxes. The amendments in this update require that deferred tax liabilities and assets be classified as noncurrent in a 401(k) defined contribution planclassified statement of financial position. For public business entities, the amendments in this update are effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted as of the benefitbeginning of substantiallyan interim or annual reporting period. The amendments in this update may be applied either prospectively to all employees at the date of hire. The plan allows eligible employeesdeferred tax liabilities and assets or retrospectively to make tax-deferred contributions up to 100% of their annual compensation, not to exceed annual limits established by the federal government.all periods presented. The Company makes matching contributionshas early-adopted this standard as of up to December 31, 2015, and6% of an employee's compensation and may make additional discretionary contributions for eligible employees. Employees are 100% vested in the employer contributions upon receipt.
The following table presents total contributions to the plan for the periods presented:
  For the years ended December 31,
(in thousands) 2012 2011 2010
Contributions $1,293
 $1,651
 $1,201


F-29F-39

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements


has applied its provisions retrospectively. The adoption of this standard resulted in the reclassification of deferred income taxes from the current liabilities "Deferred income taxes" to the noncurrent liabilities "Deferred income taxes" within the consolidated balance sheets.    
The changes to the line items in the consolidated balance sheets as of the previously reported interim periods, as if this standard had been adopted in first-quarter 2015, are presented below:
(in thousands) September 30, 2015 June 30, 2015 March 31, 2015 December 31, 2014
Noncurrent assets:        
Decrease in deferred income taxes $(68,069) $(45,089) $
 $
Decrease in total assets (68,069) (45,089) 
 
Current liabilities:        
Decrease in deferred income taxes $(68,069) $(45,089) $(73,753) $(71,191)
Decrease in total current liabilities (68,069) (45,089) (73,753) (71,191)
Noncurrent liabilities:        
Increase in deferred income taxes $
 $
 $73,753
 $71,191
Decrease in total liabilities (68,069) (45,089) 
 
See Note 7 for additional discussion of the December 31, 2012, 20112014 consolidated balance sheet presentation reclassification.
In July 2015, the FASB issued new guidance in Topic 330, Inventory, which seeks to simplify the measurement of inventory. The amendments in this update apply to inventory that is measured using all methods excluding last-in, first-out and 2010the retail inventory method. The main substantive provision of this guidance is for an entity to change the subsequent measurement of inventory, within the scope of this guidance, from LCM to the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The amendments in this update are effective for annual reporting periods beginning after December 15, 2016, including interim periods within those fiscal years and should be applied prospectively with earlier application permitted as of the beginning of an interim or annual reporting period. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements upon adoption of this standard.
In April 2015, the FASB issued new guidance in Subtopic 835-30, Interest-Imputation of Interest, which seeks to simplify the presentation of debt issuance costs. These amendments require that debt issuance costs related to a recognized debt liability be presented in an entity's balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this guidance. Entities should apply the amendments on a retrospective basis, wherein the balance sheet of each individual period presented should be adjusted to reflect the period-specific effects of applying the new guidance. The Company has early-adopted this standard as of September 30, 2015, and has applied its provisions retrospectively. The adoption of this standard resulted in the reclassification of (i) the unamortized debt issuance costs related to the Company's senior unsecured notes from noncurrent assets "Debt issuance costs, net" to noncurrent liabilities "Long-term debt, net" and (ii) the unamortized debt issuance costs related to the Company's Senior Secured Credit Facility from noncurrent assets "Debt issuance costs, net" to noncurrent assets "Other assets, net" within the consolidated balance sheets. See Notes 2.k and 5.h for additional discussion of debt issuance costs.

F-40

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


K—Net income per shareThe changes to the line items in the consolidated balance sheets as of the previously reported interim periods, as if this standard had been adopted in first-quarter 2015, are presented below:
(in thousands) June 30, 2015 March 31, 2015 December 31, 2014
Noncurrent assets:      
Decrease in debt issuance costs, net $(26,158) $(33,513) $(28,463)
Increase in other assets, net 6,068
 6,873
 6,615
Decrease in total assets (20,090) (26,640) (21,848)
Noncurrent liabilities:      
Decrease in long-term debt, net $(20,090) $(26,640) $(21,848)
Decrease in total liabilities (20,090) (26,640) (21,848)
BasicIn May 2014, the FASB issued a comprehensive new revenue recognition standard that supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, and industry-specific guidance in Subtopic 932-605, Extractive Activities—Oil and Gas—Revenue Recognition. The core principle of the new guidance is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for transferring those goods or services. The new standard also requires significantly expanded disclosure regarding the qualitative and quantitative information of an entity's nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The standard creates a five-step model that requires companies to exercise judgment when considering the terms of a contract and all relevant facts and circumstances. The standard allows for several transition methods: (a) a full retrospective adoption in which the standard is applied to all of the periods presented, or (b) a modified retrospective adoption in which the standard is applied only to the most current period presented in the financial statements, including additional disclosures of the standard's application impact to individual financial statement line items. This standard is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements upon adoption of this standard.
Note 15—Variable interest entity
An entity is referred to as a VIE pursuant to accounting guidance for consolidation if it possesses one of the following criteria: (i) it is thinly capitalized, (ii) the residual equity holders do not control the entity, (iii) the equity holders are shielded from the economic losses, (iv) the equity holders do not participate fully in the entity's residual economics, or (v) the entity was established with non-substantive voting interests. In order to determine if a VIE should be consolidated, an entity must determine if it is the primary beneficiary of the VIE. The primary beneficiary of a VIE is that variable interest-holder possessing a controlling financial interest through: (i) its power to direct the activities of the VIE that most significantly impact the VIE's economic performance and (ii) its obligation to absorb losses or its right to receive benefits from the VIE that could potentially be significant to the VIE. In order to determine whether the Company owns a variable interest in a VIE, a qualitative analysis is performed of the entity's design, organizational structure, primary decision makers and relevant agreements. The Company continually monitors its VIE exposure to determine if any events have occurred that could cause the primary beneficiary to change.
LMS contributed $99.9 million and $55.2 million during the years ended December 31, 2015 and 2014, respectively, to Medallion Gathering & Processing, LLC, a Texas limited liability company formed on October 12, 2012, and its wholly-owned subsidiaries (together, "Medallion"). See Note 19.b for discussion regarding a contribution made to Medallion subsequent to December 31, 2015.
LMS holds 49% of Medallion ownership units. Medallion was established for the purpose of developing midstream solutions and providing midstream infrastructure to bring oil, NGL and natural gas to market. LMS and the other 51% interest-holder have agreed that the voting rights of Medallion, the profit and loss sharing, and the additional capital contribution requirements shall be equal to the ownership unit percentage held. Additionally, Medallion requires a super-majority vote of 75% for all key operating and business decisions. The Company has determined that Medallion is a VIE. However, LMS is not considered to be the primary beneficiary of the VIE because LMS does not have the power to direct the activities that most significantly affect Medallion's economic performance. As such, Medallion is accounted for under the equity method of accounting with the Company's proportionate share of Medallion's net income per share(loss) reflected in the consolidated statements of operations as "Income (loss) from equity method investee" and the carrying amount reflected in the consolidated balance sheets as "Investment in equity method investee."

F-41

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


During the year ended December 31, 2015, Medallion continued expansion activities on existing portions of its pipeline infrastructure in order to gather additional third-party oil production and began recognizing revenue due to its main pipeline becoming operational.
During the year ended December 31, 2015, the Company negotiated a buyout of a minimum volume commitment to Medallion, which was related to natural gas gathering infrastructure Medallion constructed on acreage that the Company does not plan to develop. The portion of the buyout that was related to the Company's minimum volume commitment for future periods was $3.0 million and is computed by dividing net income byincluded in the weighted average numberconsolidated statements of shares outstandingoperations in the line item "Minimum volume commitments" for the period. Diluted net income per share reflectsperiod in which the potential dilutionbuyout was settled. See Note 16.a for discussion of non-vested restricted stock awards. The effect ofitems included in the Company's outstanding optionsconsolidated financial statements related to purchase 459,469 shares of common stock at $24.11 per share were excluded from the calculation of diluted net income per share because the exercise price of those options was greater than the average market price during the period and therefore, the inclusion of these outstanding options would have been anti-dilutive.Medallion.
The following istable summarizes items included in Medallion's consolidated statements of operations, which are not recorded in the calculation of basic and diluted weighted average shares outstanding and net income per shareCompany's consolidated financial statements, for the periods presented:
  For the years ended December 31,
(in thousands, except for per share data) 2012 2011
Net income (numerator):    
Net income —basic and diluted $61,654
 $105,554
Weighted average shares (denominator)(1):
    
Weighted average shares—basic 126,957
 107,187
Non-vested restricted stock 1,214
 912
Weighted average shares—diluted 128,171
 108,099
Net income per share:    
Basic $0.49
 $0.98
Diluted $0.48
 $0.98
  For the years ended December 31,
(in thousands) 
2015(3)
 2014 2013
Total revenues $34,288
 $4,623
 $892
Gross profit(1)
 29,826
 4,623
 892
Income (loss) from continuing operations 13,821
 (333) 54
Net income (loss)(2)
 13,821
 (333) 54

(1)
ForMedallion's pipeline did not become operational until 2015, accordingly no costs of good sold were recorded for the years ended December 31, 2014 and 2013.
(2)As Medallion's financial statements are unaudited at the time of filing the Company's Annual Report on Form 10-K, the Company's proportionate share of Medallion's net income (loss) reflected in the consolidated statements of operations for the years ended December 31, 2015 and 2014 include immaterial prior period Medallion audit adjustments.
(3)Medallion's consolidated statement of operations for the year ended December 31, 2011, weighted average shares outstanding used in the computation of basic and diluted net income per share attributable to shareholders has been computed taking into account (1) restricted stock awards converted in the Corporate Reorganization as if the conversion occurred2015 was unaudited as of the beginningFebruary 17, 2016.
The following table summarizes items included in Medallion's consolidated balance sheets, which are not recorded in the Company's consolidated financial statements, as of the periods presented:
  December 31,
(in thousands) 
2015(1)
 2014
Assets:    
Current assets $78,411
 $25,777
Noncurrent assets 329,956
 112,753
Total assets $408,367
 $138,530
Liabilities:    
Current liabilities $15,461
 $19,522
Noncurrent liabilities 
 
Total liabilities $15,461
 $19,522

(1)Medallion's consolidated balance sheet as of the year and (2) the 20,125,000 sharesDecember 31, 2015 was unaudited as of common stock issued by the Company in the IPO.February 17, 2016.





F-42

L—Recently issued accounting standards
Laredo Petroleum, Inc.
In December 2011, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") 2011-11, Disclosures about Offsetting Assets and Liabilities,Notes to improve reporting and transparency of offsetting (netting) assets and liabilities and the related effects on the financial statements. This ASU is effective for fiscal years and interim periods within those years beginning on or after January 1, 2013. The Company does not expect the adoption of this ASU to have a material effect on the consolidated financial statements.statements


Note 16—Related Parties
a.    Medallion
The following table summarizes items included in the consolidated statements of operations related to Medallion for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Midstream service revenues $487
 $
 $
Minimum volume commitments 5,235
 2,552
 891
Interest and other income 158
 
 
The following table summarizes items included in the consolidated balance sheets related to Medallion as of the periods presented:
  December 31,
(in thousands) 2015 2014
Accounts receivable, net $1,163
 $
Other assets, net(1)
 1,025
 1,110
Other current liabilities(2)
 27,583
 3,443

(1)Amounts included in "Other assets, net" above represent LMS owned line-fill in Medallion's pipeline.
(2)Amounts included in "Other current liabilities" above for the year ended December 31, 2015 represents LMS's capital contribution payable to Medallion, of which a portion was paid subsequent to December 31, 2015. "Other current liabilities" above for the year ended December 31, 2014 represents LMS's minimum volume commitment payable to Medallion. See Note 15 for additional discussion of Medallion and Note 19.b for additional discussion of the subsequent payment to Medallion.
b.    Targa Resources Corp.
The Company has a gathering and processing arrangement with affiliates of Targa Resources Corp. ("Targa"). One of Laredo's directors was on the board of directors of Targa until May 18, 2015.
The following table summarizes the oil, NGL and natural gas sales and midstream service revenues received from Targa and included in the consolidated statements of operations for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Oil, NGL and natural gas sales $99,992
 $96,100
 $74,245
Midstream service revenues 590
 
 
The following table summarizes the amounts included in accounts receivable, net from Targa in the consolidated balance sheets as of the periods presented:
  December 31,
(in thousands) 2015 2014
Accounts receivable, net $6,097
 $12,869
c.    Archrock Partners, L.P.
The Company has a compression arrangement with affiliates of Archrock Partners, L.P., formerly Exterran Partners L.P., ("Archrock"). One of Laredo's directors is on the board of directors of Archrock GP LLC, an affiliate of Archrock.

F-43

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


The following table summarizes the lease operating expenses related to Archrock included in the consolidated statements of operations for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Lease operating expenses $1,477
 $975
 $51
The following table summarizes the capital expenditures related to Archrock included in the consolidated statements of cash flows for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Capital expenditures:      
Oil and natural gas properties $
 $57
 $
Midstream service assets 64
 833
 
The following table summarizes the amounts included in accounts payable from Archrock in the consolidated balance sheets as of the periods presented:
  December 31,
(in thousands) 2015 2014
Accounts payable $13
 $
d.    Helmerich & Payne, Inc.
The Company has had drilling contracts with Helmerich & Payne, Inc. ("H&P"). Laredo's Chairman and Chief Executive Officer is on the board of directors of H&P.
The following table summarizes the capitalized oil and natural gas properties related to H&P and included in the consolidated statements of cash flows for the periods presented:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Capital expenditures:      
Oil and natural gas properties $2,434
 $9,518
 $9,943
M—Subsidiary guaranteesNote 17—Segments
Since the beginning of 2015, the Company has presented financial results by segment to highlight the growing value of its midstream and marketing segment and the midstream and marketing segment's interest in Medallion, as Medallion's third-party revenues have increased.
The Company operates in two business segments, which are (i) exploration and production and (ii) midstream and marketing. The exploration and production segment is engaged in the acquisition, exploration and development of oil and natural gas properties. The midstream and marketing segment provides Laredo's exploration and production segment and certain third parties with (i) products and services that need to be delivered by midstream infrastructure, including oil and natural gas gathering services as well as rig fuel, natural gas lift and water in and around Laredo's primary production corridors, (ii) water takeaway in and around Laredo's primary production corridors and (iii) oil and natural gas takeaway optionality in the field coupled with firm service commitments to maximize Laredo's oil, NGL and natural gas revenues.
The following table presents selected financial information, for the periods presented, regarding the Company's operating segments on a stand-alone basis and the consolidation and elimination entries necessary to arrive at the information for the Company on a consolidated basis:


F-44

Laredo HoldingsPetroleum, Inc.
Notes to the consolidated financial statements


(in thousands) Exploration and production Midstream and marketing 
Eliminations
 Consolidated
company
Year ended December 31, 2015:        
Oil, NGL and natural gas sales $432,711
 $1,692
 $(2,669) $431,734
Midstream service revenues 
 27,965
 (21,417) 6,548
Sales of purchased oil 
 168,358
 
 168,358
Total revenues 432,711
 198,015
 (24,086) 606,640
Lease operating expenses, including production tax 151,918
 
 (10,685) 141,233
Midstream service expenses, including minimum volume commitments 4,399
 18,393
 (11,711) 11,081
Costs of purchased oil 
 174,338
 
 174,338
General and administrative(1)
 82,251
 8,174
 
 90,425
Depletion, depreciation and amortization(2)
 269,631
 8,093
 
 277,724
Impairment expense 2,372,296
 2,592
 
 2,374,888
Other operating costs and expenses(3)
 8,123
 342
 
 8,465
Operating loss $(2,455,907) $(13,917) $(1,690) $(2,471,514)
Other financial information:        
Income from equity method investee $
 $6,799
 $
 $6,799
Interest expense(4)
 $(98,040) $(5,179) $
 $(103,219)
Loss on early redemption of debt(5)
 $(30,056) $(1,481) $
 $(31,537)
Income tax benefit(6)
 $171,952
 $4,993
 $
 $176,945
Capital expenditures $(597,086) $(35,515) $
 $(632,601)
Gross property and equipment(8)
 $5,302,716
 $345,183
 $(1,923) $5,645,976
         
Year ended December 31, 2014:        
Oil, NGL and natural gas sales $738,455
 $1,660
 $(2,912) $737,203
Midstream service revenues 
 7,838
 (5,593) 2,245
Sales of purchased oil 
 54,437
 
 54,437
Total revenues 738,455
 63,935
 (8,505) 793,885
Lease operating expenses, including production tax 153,427
 
 (6,612) 146,815
Midstream service expenses, including minimum volume commitments 
 9,641
 (1,660) 7,981
Costs of purchased oil 
 53,967
 
 53,967
General and administrative(1)
 99,075
 6,969
 
 106,044
Depletion, depreciation and amortization(2)
 241,834
 4,640
 
 246,474
Impairment expense 1,802
 2,102
 
 3,904
Other operating costs and expenses(3)
 2,248
 66
 
 2,314
Operating income (loss) $240,069
 $(13,450) $(233) $226,386
Other financial information:        
Loss from equity method investee $
 $(192) $
 $(192)
Interest expense(4)
 $(117,560) $(3,613) $
 $(121,173)
Income tax (expense) benefit(6)
 $(170,551) $6,265
 $
 $(164,286)
Capital expenditures(7)
 $(1,279,142) $(60,607) $
 $(1,339,749)
Gross property and equipment(8)
 $4,841,895
 $179,355
 $(233) $5,021,017
         
Year ended December 31, 2013:        
Oil, NGL and natural gas sales $664,844
 $
 $
 $664,844
Midstream service revenues 328
 8,824
 (8,739) 413
Total revenues 665,172
 8,824
 (8,739) 665,257
Lease operating expenses, including production tax 130,152
 
 (8,620) 121,532
Midstream service expenses, including minimum volume commitments 2,807
 1,571
 (119) 4,259
General and administrative(1)
 86,951
 2,745
 
 89,696
Depletion, depreciation and amortization(2)
 231,703
 2,241
 
 233,944
Other operating costs and expenses(3)
 1,475
 
 
 1,475
Operating income $212,084
 $2,267
 $
 $214,351
Other financial information:        
Income from equity method investee $
 $29
 $
 $29
Interest expense(4)
 $(98,680) $(1,647) $
 $(100,327)
Income tax expense(6)
 $(73,476) $(1,031) $
 $(74,507)
Capital expenditures(7)
 $(718,606) $(24,409) $
 $(743,015)
Gross property and equipment(8)
 $3,516,406
 $58,706
 $
 $3,575,112

(1)General and administrative costs were allocated based on the number of employees in the respective segment for the years ended December 31, 2015, 2014 and 2013. Certain components of general and administrative costs were not allocated and were based on actual costs for each segment, which primarily consisted of payroll, deferred

F-45

Laredo Petroleum, Inc.
Notes to the consolidated financial statements


compensation and all of Laredo's wholly-owned subsidiaries (Laredo Gas, Laredo Texasvehicle costs for the years ended December 31, 2015 and Laredo Dallas, collectively,2014 and payroll and deferred compensation for the "Subsidiary Guarantors")year ended December 31, 2013. Costs associated with land and geology were not allocated to the midstream and marketing segment for the years ended December 31, 2015, 2014 and 2013.
(2)Depletion, depreciation and amortization were based on actual costs for each segment with the exception of the allocation of depreciation of other fixed assets, which was based on the number of employees in the respective segment for the years ended December 31, 2015, 2014 and 2013.
(3)Other operating costs and expenses include restructuring expense and accretion of asset retirement obligations for the year ended December 31, 2015, accretion of asset retirement obligations and drilling rig fees for the year ended December 31, 2014 and accretion of asset retirement obligations for the year ended December 31, 2013. These expenses are based on actual costs and are not allocated.
(4)Interest expense was allocated to the exploration and production segment based on gross property and equipment for the years ended December 31, 2015, 2014 and 2013 and allocated to the midstream and marketing segment based on gross property and equipment and life-to-date contributions to the Company's equity method investee for the years ended December 31, 2015, 2014 and 2013.
(5)Loss on early redemption of debt was allocated to the exploration and production segment based on gross property and equipment for the year ended December 31, 2015 and allocated to the midstream and marketing segment based on gross property and equipment and life-to-date contributions to the Company's equity method investee for the year ended December 31, 2015.
(6)Income tax benefit or expense for the midstream and marketing segment was calculated by multiplying income (loss) from continuing operations before income taxes by 36% for the years ended December 31, 2015, 2014 and 2013.
(7)Capital expenditures exclude acquisition of oil and natural gas properties and acquisition of mineral interests for the year ended December 31, 2014 and excludes acquisitions of oil and natural gas properties for the year ended December 31, 2013.
(8)Gross property and equipment for the midstream and marketing segment includes investment in equity method investee totaling $192.5 million, $58.3 million and $5.9 million as of December 31, 2015, 2014 and 2013, respectively. Other fixed assets were allocated based on the number of employees in the respective segment as of December 31, 2015, 2014 and 2013.

Note 18—Subsidiary guarantors
The Guarantors have fully and unconditionally guaranteed the 2019January 2022 Notes, the May 2022 Notes, the March 2023 Notes and the Senior Secured Credit Facility.Facility (and had guaranteed the January 2019 Notes until the Redemption Date), subject to the Releases. In accordance with practices accepted by the SEC, Laredo has prepared condensed consolidating financial statements in order to quantify the assets, results of operations and cash flows of such subsidiaries as subsidiary guarantors. The following condensed consolidating balance sheets as of December 31, 20122015 and 2011,2014, and condensed consolidating statements of operations and condensed consolidating statements of cash flows each for the years ended December 31, 2012, 20112015, 2014 and 2010,2013, present financial information for Laredo Holdings or Laredo LLC, as applicable, as the parent of Laredo on a stand-alone basis (carrying any investments in subsidiaries under the equity method), financial information for Laredo on a stand-alone basis (carrying any investment in subsidiaries under the equity method), financial information for the Subsidiary Guarantorssubsidiary guarantors on a stand-alone basis (carrying any investment in subsidiaries under the equity method), and the consolidation and elimination entries necessary to arrive at the information for the Company on a condensed consolidated basis. Deferred income taxes for Laredo GasLMS and Laredo Texasfor GCM are recorded on Laredo's statements of financial position, statements of operations and statements of cash flowflows as they are flow-throughdisregarded entities for income tax purposes. Laredo and the Subsidiary Guarantors are not restricted from making distributions.intercompany distributions to each other. During the year ended December 31, 2014, certain midstream service assets were transferred from Laredo to LMS at historical cost.

F-30F-46

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

Condensed consolidating balance sheet
December 31, 20122015
(in thousands) 
Laredo
Holdings
 Laredo 
Subsidiary
Guarantors
 
Intercompany
eliminations
 
Consolidated
company
 Laredo Subsidiary Guarantors 
Intercompany
eliminations
 
Consolidated
company
Accounts receivable $
 $59,447
 $24,393
 $
 $83,840
Accounts receivable, net $74,613
 $13,086
 $
 $87,699
Other current assets 
 52,147
 1,450
 
 53,597
 244,477
 56
 
 244,533
Total oil and natural gas properties, net 
 1,213,946
 817,992
 
 2,031,938
 1,017,565
 9,350
 (1,923) 1,024,992
Total pipeline and gas gathering assets, net 
 
 65,292
 
 65,292
Total midstream service assets, net 
 131,725
 
 131,725
Total other fixed assets, net 
 13,837
 2,824
 
 16,661
 43,210
 328
 
 43,538
Investment in subsidiaries 831,641
 782,635
 
 (1,614,276) 
Investment in subsidiaries and equity method investee 301,891
 192,524
 (301,891) 192,524
Total other long-term assets 83
 136,403
 
 (49,510) 86,976
 84,360
 3,916
 
 88,276
Total assets $831,724
 $2,258,415
 $911,951
 $(1,663,786) $2,338,304
 $1,766,116
 $350,985
 $(303,814) $1,813,287
        
Accounts payable $1
 $35,948
 $12,723
 $
 $48,672
 $12,203
 $1,978
 $
 $14,181
Other current liabilities 
 157,805
 55,591
 
 213,396
 158,283
 44,351
 
 202,634
Long-term debt, net 1,416,226
 
 
 1,416,226
Other long-term liabilities 
 16,261
 61,002
 (49,510) 27,753
 46,034
 2,765
 
 48,799
Long-term debt 
 1,216,760
 
 
 1,216,760
Stockholders' equity 831,723
 831,641
 782,635
 (1,614,276) 831,723
 133,370
 301,891
 (303,814) 131,447
Total liabilities and stockholders' equity $831,724
 $2,258,415
 $911,951
 $(1,663,786) $2,338,304
 $1,766,116
 $350,985
 $(303,814) $1,813,287

Condensed consolidating balance sheet
December 31, 20112014
(in thousands) 
Laredo
Holdings
 Laredo 
Subsidiary
Guarantors
 
Intercompany
eliminations
 
Consolidated
company
 Laredo Subsidiary Guarantors 
Intercompany
eliminations
 
Consolidated
company
Accounts receivable $
 $53,006
 $21,129
 $
 $74,135
Accounts receivable, net $107,860
 $19,069
 $
 $126,929
Other current assets 54,921
 22,691
 204
 (29,013) 48,803
 238,300
 24
 
 238,324
Total oil and natural gas properties, net 
 780,152
 535,525
 
 1,315,677
 3,196,231
 7,277
 (233) 3,203,275
Total pipeline and gas gathering assets, net 
 
 51,742
 
 51,742
Total midstream service assets, net 
 108,462
 
 108,462
Total other fixed assets, net 
 10,321
 769
 
 11,090
 42,046
 299
 
 42,345
Investment in subsidiaries 705,093
 531,568
 
 (1,236,661) 
Investment in subsidiaries and equity method investee 163,349
 58,288
 (163,349) 58,288
Total other long-term assets 
 142,815
 
 (16,610) 126,205
 128,582
 4,496
 
 133,078
Total assets $760,014
 $1,540,553
 $609,369
 $(1,282,284) $1,627,652
 $3,876,368
 $197,915
 $(163,582) $3,910,701
        
Accounts payable $1
 $58,730
 $14,198
 $(26,922) $46,007
 $38,453
 $555
 $
 $39,008
Other current liabilities 
 130,990
 39,455
 (2,091) 168,354
 283,026
 31,800
 
 314,826
Long-term debt, net 1,779,447
 
 
 1,779,447
Other long-term liabilities 
 8,779
 24,148
 (16,610) 16,317
 212,008
 2,211
 
 214,219
Long-term debt 
 636,961
 
 
 636,961
Stockholders' equity 760,013
 705,093
 531,568
 (1,236,661) 760,013
 1,563,434
 163,349
 (163,582) 1,563,201
Total liabilities and stockholders' equity $760,014
 $1,540,553
 $609,369
 $(1,282,284) $1,627,652
 $3,876,368
 $197,915
 $(163,582) $3,910,701


F-31F-47

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

Condensed consolidating statement of operations
For the year ended December 31, 20122015
(in thousands) 
Laredo
Holdings
 Laredo 
Subsidiary
Guarantors
 
Intercompany
eliminations
 
Consolidated
company
Total operating revenues $
 $304,572
 $293,658
 $(10,150) $588,080
Total operating costs and expenses 308
 266,420
 159,722
 (10,150) 416,300
Income (loss) from operations (308) 38,152
 133,936
 
 171,780
Interest expense, net 
 (85,513) 
 
 (85,513)
Other, net 61,879
 8,345
 (9) (61,879) 8,336
Income (loss) from operations before income tax 61,571
 (39,016) 133,927
 (61,879) 94,603
Income tax benefit (expense) 83
 (3,020) (30,012) 
 (32,949)
Net income (loss) $61,654
 $(42,036) $103,915
 $(61,879) $61,654
(in thousands) Laredo Subsidiary Guarantors 
Intercompany
eliminations
 
Consolidated
company
Total operating revenues $432,478
 $198,248
 $(24,086) $606,640
Total operating costs and expenses 2,897,272
 203,278
 (22,396) 3,078,154
Loss from operations (2,464,794) (5,030) (1,690) (2,471,514)
Interest expense and other, net (102,793) 
 
 (102,793)
Other non-operating income 182,396
 6,708
 (1,678) 187,426
Income (loss) from continuing operations before income tax (2,385,191) 1,678
 (3,368) (2,386,881)
Income tax benefit 176,945
 
 
 176,945
Income (loss) from continuing operations (2,208,246) 1,678
 (3,368) (2,209,936)
Net income (loss) $(2,208,246) $1,678
 $(3,368) $(2,209,936)

Condensed consolidating statement of operations
For the year ended December 31, 20112014
(in thousands) 
Laredo
Holdings
 Laredo 
Subsidiary
Guarantors
 
Intercompany
eliminations
 
Consolidated
company
 Laredo Subsidiary Guarantors 
Intercompany
eliminations
 
Consolidated
company
Total operating revenues $
 $237,194
 $280,349
 $(7,273) $510,270
 $738,446
 $63,944
 $(8,505) $793,885
Total operating costs and expenses 8
 173,638
 141,998
 (7,273) 308,371
 505,455
 70,316
 (8,272) 567,499
Income (loss) from operations (8) 63,556
 138,351
 
 201,899
 232,991
 (6,372) (233) 226,386
Interest income (expense), net 96
 (45,470) (5,098) 
 (50,472)
Other, net 105,466
 10,492
 3,009
 (105,466) 13,501
Income from operations before income tax 105,554
 28,578
 136,262
 (105,466) 164,928
Interest expense and other, net (120,879) 
 
 (120,879)
Other non-operating income (expense) 317,980
 (339) 6,711
 324,352
Income (loss) from continuing operations before income tax 430,092
 (6,711) 6,478
 429,859
Income tax expense 
 (12,628) (46,746) 
 (59,374) (164,286) 
 
 (164,286)
Net income $105,554
 $15,950
 $89,516
 $(105,466) $105,554
Income (loss) from continuing operations 265,806
 (6,711) 6,478
 265,573
Net income (loss) $265,806
 $(6,711) $6,478
 $265,573


Condensed consolidating statement of operations
For the year ended December 31, 20102013
(in thousands) Laredo LLC Laredo 
Subsidiary
Guarantors
 
Intercompany
eliminations
 
Consolidated
company
Total operating revenues $
 $93,580
 $152,373
 $(3,953) $242,000
Total operating costs and expenses 7
 91,620
 81,344
 (3,953) 169,018
Income (loss) from operations (7) 1,960
 71,029
 
 72,982
Interest income (expense), net 150
 (11,911) (6,570) 
 (18,331)
Other, net 
 13,808
 (8,023) 
 5,785
Income from operations before income tax 143
 3,857
 56,436
 
 60,436
Income tax (expense) benefit 
 (2,234) 28,046
 
 25,812
Net income $143
 $1,623
 $84,482
 $
 $86,248
(in thousands) Laredo Subsidiary Guarantors 
Intercompany
eliminations
 
Consolidated
company
Total operating revenues $665,172
 $8,824
 $(8,739) $665,257
Total operating costs and expenses 455,972
 3,673
 (8,739) 450,906
Income from operations 209,200
 5,151
 
 214,351
Interest expense and other, net (100,164) 
 
 (100,164)
Other non-operating income 84,861
 2,268
 (10,232) 76,897
Income from continuing operations before income tax 193,897
 7,419
 (10,232) 191,084
Income tax expense (74,507) 
 
 (74,507)
Income from continuing operations 119,390
 7,419
 (10,232) 116,577
Income (loss) from discontinued operations, net of tax (1,390) 2,813
 
 1,423
Net income $118,000
 $10,232
 $(10,232) $118,000


F-32F-48

Laredo Petroleum, Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

Condensed consolidating statement of cash flows
For the year ended December 31, 20122015
(in thousands) 
Laredo
Holdings
 Laredo 
Subsidiary
Guarantors
 
Intercompany
eliminations
 
Consolidated
company
 Laredo Subsidiary Guarantors 
Intercompany
eliminations
 
Consolidated
company
Net cash flows provided by operating activities $61,571
 $124,322
 $225,841
 $(34,958) $376,776
 $316,838
 $787
 $(1,678) $315,947
Net cash flows used in investing activities (116,492) (660,295) (225,843) 61,879
 (940,751)
Change in investments between affiliates (136,252) 134,574
 1,678
 
Capital expenditures and other (532,146) (135,361) 
 (667,507)
Net cash flows provided by financing activities 
 569,197
 
 
 569,197
 353,393
 
 
 353,393
Net (decrease) increase in cash and cash equivalents (54,921) 33,224
 (2) 26,921
 5,222
Net increase in cash and cash equivalents 1,833
 
 
 1,833
Cash and cash equivalents at beginning of period 54,921
 
 2
 (26,921) 28,002
 29,320
 1
 
 29,321
Cash and cash equivalents at end of period $
 $33,224
 $
 $
 $33,224
 $31,153
 $1
 $
 $31,154

Condensed consolidating statement of cash flows
For the year ended December 31, 20112014
(in thousands) 
Laredo
Holdings
 Laredo 
Subsidiary
Guarantors
 
Intercompany
eliminations
 
Consolidated
company
Net cash flows provided by operating activities $105,643
 $156,648
 $200,354
 $(118,569) $344,076
Net cash flows (used in) provided by investing activities (408,748) (415,058) 11,465
 105,554
 (706,787)
Net cash flows provided by (used in) financing activities 319,374
 258,410
 (218,306) 
 359,478
Net increase (decrease) in cash and cash equivalents 16,269
 
 (6,487) (13,015) (3,233)
Cash and cash equivalents at beginning of period 38,652
 
 6,489
 (13,906) 31,235
Cash and cash equivalents at end of period $54,921
 $
 $2
 $(26,921) $28,002
(in thousands) Laredo Subsidiary Guarantors 
Intercompany
eliminations
 
Consolidated
company
Net cash flows provided (used) by operating activities $496,955
 $(5,389) $6,711
 $498,277
Change in investments between affiliates (113,449) 120,160
 (6,711) 
Capital expenditures and other (1,292,191) (114,770) 
 (1,406,961)
Net cash flows provided by financing activities 739,852
 
 
 739,852
Net (decrease) increase in cash and cash equivalents (168,833) 1
 
 (168,832)
Cash and cash equivalents at beginning of period 198,153
 
 
 198,153
Cash and cash equivalents at end of period $29,320
 $1
 $
 $29,321


Condensed consolidating statement of cash flows
For the year ended December 31, 20102013
(in thousands) Laredo LLC Laredo 
Subsidiary
Guarantors
 
Intercompany
eliminations
 
Consolidated
company
 Laredo Subsidiary Guarantors 
Intercompany
eliminations
 
Consolidated
company
Net cash flows provided by operating activities $143
 $63,887
 $103,218
 $(10,205) $157,043
 $359,198
 $15,763
 $(10,232) $364,729
Net cash flows used in investing activities (52,900) (132,564) (275,083) 
 (460,547)
Change in investments between affiliates 23,986
 (34,218) 10,232
 
Capital expenditures and other (348,339) 18,455
 
 (329,884)
Net cash flows provided by financing activities 74,487
 68,677
 176,588
 
 319,752
 130,084
 
 
 130,084
Net increase in cash and cash equivalents 21,730
 
 4,723
 (10,205) 16,248
 164,929
 
 
 164,929
Cash and cash equivalents at beginning of period 16,922
 
 1,766
 (3,701) 14,987
 33,224
 
 
 33,224
Cash and cash equivalents at end of period $38,652
 $
 $6,489
 $(13,906) $31,235
 $198,153
 $
 $
 $198,153

F-33

Laredo Petroleum Holdings, Inc.
Notes to the consolidated financial statements
December 31, 2012, 2011 and 2010

N—Note 19—Subsequent events
1.   Additional borrowinga.    Senior Secured Credit Facility
On January 3, February 7 and March 7, 2013,14, 2016, the Company borrowed $40.0$35.0 million, $65.0 million and $30 million, respectively, on the Senior Secured Credit Facility. The outstanding balance under the Senior Secured Credit Facility was approximately $300.0$170.0 million at March 8, 2013.February 16, 2016.
2.b.    Medallion Gathering & Processing, LLCcapital call
On January 4, 2013, Laredo Gas15 and February 16, 2016, the Company made additional capital contributions to Medallion of $12.7 million and $8.3 million, respectively, which represent LMS's remaining commitment for the extension from Medallion's Garden City Station to Midland and Upton counties, Texas and a private equity firm formed Medallion Gathering & Processing, LLC (“Medallion”)portion of the commitment for the purpose of developing midstream solutions and providing midstream infrastructure forsouthern extension from Medallion's Reagan Station further into Reagan County, Texas.

F-49

Laredo Petroleum, Inc.
Notes to the Company, its affiliates, and other third parties as necessary to bring discovered oil and natural gas to market in a merchantable state. Laredo Gas contributed approximately $0.9 million effectively acquiring 49% of Medallion ownership units and the private equity firm retained 51% of Medallion ownership units. The accounting ramifications of this transaction are preliminary and currently being evaluated by the Company.
3.    Restricted stock awards and other compensation
On February 15, 2013, the Company granted 1,099,256 restricted stock awards with service vesting criteria, 1,018,849 restricted stock option awards with service vesting criteria and 58,291 performance awards with a combination of market and service vesting criteria under the LTIP and related award agreements. For stock-based compensation equity awards, compensation expense will be recognized in the Company'sconsolidated financial statements over the awards' vesting periods based on their grant date fair value. The Company will utilize (i) the closing stock price on the date of grant of $17.34 to determine the fair value of service vesting restricted stock awards and options and (ii) a probability analysis to determine the fair value of performance awards with a combination of market and service vesting criteria.
4.

c.    New commodity derivative contracts
Subsequent to December 31, 2012,2015, the Company entered into the following new commodity derivative contracts:
  
Aggregate
volumes
 Floor price Contract period
Natural gas (volumes in MMBtu):(1)
      
Put 8,040,000
 $2.50
 January 2017 - December 2017
Put 8,220,000
 $2.50
 January 2018 - December 2018

  
Aggregate
volumes
 
Swap
price
 
Floor
price
 
Ceiling
price
 Contract period
Oil (volumes in Bbl):          
Swap 1,377,000
 $98.10
 $
 $
   March 2013 - December 2013
Basis Swap 4,026,000
 $1.00
 $
 $
   March 2013 - December 2014
Swap 912,500
 $93.65
 $
 $
 January 2014 - December 2014
Swap 365,000
 $93.68
 $
 $
 January 2014 - December 2014
Price collar 1,277,500
 $
 $80.00
 $98.50
 January 2015 - December 2015
Price collar 1,281,000
 $
 $80.00
 $93.00
 January 2016 - December 2016
Natural gas (volumes in MMBtu):        
Price collar 2,900,000
 $
 $3.00
 $4.00
   March 2013 - December 2013







F-34

(1)The associated commodity derivatives will be settled based on the Inside FERC index price for West Texas Waha. There are $4.3 million in deferred premiums associated with these contracts.
Laredo Petroleum Holdings, Inc.
Note 20—Supplemental oil, NGL and natural gas disclosures
December 31, 2012, 2011 and 2010

O—Supplemental oil and natural gas disclosures
1.a.    Costs incurred in oil, NGL and natural gas property acquisition, exploration and development activities
Costs incurred in the acquisition, exploration and development of oil, NGL and natural gas assets are presented below for the periods presented:below:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Property acquisition costs:            
Proved $16,925
 $
 $
Unproved 3,693
 
 
Evaluated $
 $3,873
 $9,652
Unevaluated 
 9,925
 27,087
Exploration(1) 93,266
 62,888
 87,576
 20,697
 242,284
 48,763
Development costs(1)(2)
 839,118
 660,922
 414,870
 500,577
 1,049,317
 654,452
Total costs incurred $953,002
 $723,810
 $502,446
 $521,274
 $1,305,399
 $739,954

(1)The Company acquired significant leasehold interests during the year ended December 31, 2014.
(2)
(1)The costs incurred for oil, NGL and natural gas development activities include $13.4 million, $6.9 million and $6.8 million in asset retirement obligations for the years ended December 31, 2015, 2014 and 2013, respectively.
b.    Capitalized oil, and natural gas development activities include $7.4 million, $4.5 million and $2.0 million, in asset retirement obligations for the years ended December 31, 2012, 2011 and 2010, respectively.
2.    Capitalized oilNGL and natural gas costs
Aggregate capitalized costs related to oil, NGL and natural gas production activities with applicable accumulated depreciation, depletion amortization and impairment are presented below for the periods presented:below:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Capitalized costs:            
Proved properties $2,993,266
 $2,083,015
 $1,379,885
Unproved properties 159,946
 117,195
 96,515
Evaluated properties $5,103,635
 $4,446,781
 $3,276,578
Unevaluated properties not being depleted 140,299
 342,731
 208,085
 3,153,212
 2,200,210
 1,476,400
 5,243,934
 4,789,512
 3,484,663
Less accumulated depreciation, depletion, amortization and impairment 1,121,273
 884,533
 713,118
Less accumulated depletion and impairment (4,218,942) (1,586,237) (1,349,315)
Net capitalized costs $2,031,939
 $1,315,677
 $763,282
 $1,024,992
 $3,203,275
 $2,135,348
The following table shows a summary of the oil, NGL and natural gas property costs not being amortized atdepleted as of December 31, 20122015, by year in which such costs were incurred:
(in thousands) 2012 2011 2010 
2009 and
prior
 Total 2015 2014 2013 
2012 and
prior
 Total
Unproved properties $112,104
 $17,993
 $14,382
 $15,467
 $159,946
Unevaluated properties not being depleted $12,640
 $110,955
 $9,293
 $7,411
 $140,299
UnprovedUnevaluated properties, which are not subject to amortization,depletion, are not individually significant and consist primarily of lease acquisition costs.costs for acquiring oil, NGL and natural gas leaseholds where no evaluated reserves have been identified, including costs of wells being

F-50

Laredo Petroleum, Inc.
Supplemental oil and natural gas disclosures


evaluated. The evaluation process associated with these properties has not been completed and therefore, the Company is unable to estimate when these costs will be included in the amortizationdepletion calculation.

F-35

Laredo Petroleum Holdings, Inc.
Supplemental oil and natural gas disclosures
December 31, 2012, 2011 and 2010

3.c.    Results of oil, NGL and natural gas producing activities
The results of operations of oil, NGL and natural gas producing activities (excluding corporate overhead and interest costs) are presented below for the periods presented:below:
  For the years ended December 31,
(in thousands) 2015 2014 2013
Revenues:      
Oil, NGL and natural gas sales $431,734
 $737,203
 $664,844
Production costs:      
Lease operating expenses 108,341
 96,503
 79,136
Production and ad valorem taxes 32,892
 50,312
 42,396
  141,233
 146,815
 121,532
Other costs:      
Depletion 263,666
 237,067
 227,992
Accretion of asset retirement obligations 2,236
 1,721
 1,475
Impairment expense 2,369,477
 
 
Income tax (benefit) expense(1)
 (164,141) 126,576
 112,984
Results of operations $(2,180,737) $225,024
 $200,861

(1)During the year ended December 31, 2015, the Company recorded a valuation allowance against its deferred tax assets related to its oil, NGL and natural gas producing activities. Accordingly, for the year ended December 31, 2015, income tax benefit is computed utilizing the Company's effective rate of 7%, which reflects tax deductions and tax credits and allowances relating to the oil, NGL and natural gas producing activities that are reflected in the Company's consolidated income tax benefit for the period. For the years ended December 31, 2014 and 2013, income tax expense is computed utilizing the statutory rate.
  For the years ended December 31,
(in thousands) 2012 2011 2010
Revenues:      
Oil and natural gas sales $583,569
 $506,255
 $239,783
Production costs:      
Lease operating expenses 67,325
 43,306
 21,684
Production and ad valorem taxes 37,637
 31,982
 15,699
  104,962
 75,288
 37,383
Other costs:      
Depreciation, depletion, amortization 237,130
 171,517
 93,815
Accretion of asset retirement obligation 1,200
 616
 475
Income tax expense 83,686
 93,180
 39,223
Results of operations $156,591
 $165,654
 $68,887
4.d.    Net proved oil, NGL and natural gas reserves - (unaudited)
Ryder Scott Company, L.P. ("Ryder Scott"), the Company's independent reserve engineers, estimated 100% of the Company's proved reserves atas of December 31, 2012, 20112015, 2014 and 2010.2013. In accordance with SEC regulations, reserves atas of December 31, 20122015, 20112014 and 20102013 were estimated using the unweighted arithmetic average first-day-of-the-monthRealized Prices (which are the Benchmark Prices adjusted for quality, transportation fees, geographical differentials, marketing bonuses or deductions and other factors affecting the price forreceived at the preceding 12-month period.wellhead), see Note 2.g. The Company's reserves as of December 31, 2015 are reported in three streams: oil, NGL and natural gas. The Company's reserves as of December 31, 2014 and 2013 are reported in two streams; crudestreams: oil and liquids-rich natural gas. Thegas with the economic value of the natural gas liquidsNGLs in the Company's natural gas is included in the wellhead natural gas price. This change impacts the comparability of 2015 with prior periods. The Company emphasizes that reserve estimates are inherently imprecise and that estimates of new discoveries are more imprecise than those of producing oil, NGL and natural gas properties. Accordingly, the estimates may change as future information becomes available.

F-51

Laredo Petroleum, Inc.
Supplemental oil and natural gas disclosures


The following table providestables provide an analysis of the changechanges in estimated reserve quantities of oil, NGL and natural gas reserves,for the year ended December 31, 2015 and of oil and liquids-rich natural gas for the years ended December 31, 2014 and 2013, all of which are located within the United States, for the periods presented. Oil volumes are expressed in MBbl and natural gas volumes are expressed in MMcf.States.
  Year ended December 31, 2015
  Oil
(MBbl)
 NGL (MBbl) Gas
(MMcf)
 MBOE
Proved developed and undeveloped reserves:        
Beginning of year 140,190
 
 642,794
 247,322
Revisions of previous estimates(1)
 (88,900) 35,477
 (424,546) (124,180)
Extensions, discoveries and other additions 10,511
 5,865
 36,074
 22,388
Sales of reserves in place (1,552) (1,008) (5,554) (3,486)
Production (7,610) (4,267) (26,816) (16,346)
End of year 52,639
 36,067
 221,952
 125,698
Proved developed reserves:   
    
Beginning of year 56,975
 
 291,493
 105,557
End of year 40,944
 29,349
 180,613
 100,395
Proved undeveloped reserves:   
    
Beginning of year 83,215
 
 351,301
 141,765
End of year 11,695
 6,718
 41,339
 25,303

(1)The positive NGL revisions of previous estimates and the negative natural gas revisions of previous estimates include the impact of the Company's conversion to three-stream production. For periods prior to January 1, 2015, the Company presented its reserves for oil and natural gas, which combined NGL with the natural gas stream, and did not separately report NGL. This change impacts the comparability to prior periods.
 Year ended December 31, 2012 Year ended December 31, 2014
(in thousands) 
Gas
(MMcf)
 
Oil
(MBbl)
 MBOE
 Oil
(MBbl)

Gas
(MMcf)
 MBOE
Proved developed and undeveloped reserves:            
Beginning of year 601,117
 56,267
 156,453
 111,498
 552,702
 203,615
Revisions of previous estimates (260,651) (12,396) (55,837) (10,134) (67,350) (21,359)
Extensions, discoveries and other additions 232,418
 57,391
 96,127
 45,554
 185,909
 76,539
Purchases of reserves in place 9,210
 1,654
 3,189
 173
 498
 256
Production (39,148) (4,775) (11,300) (6,901) (28,965) (11,729)
End of year 542,946
 98,141
 188,632
 140,190
 642,794
 247,322
Proved developed reserves:       
 
  
Beginning of year 248,598
 21,762
 63,195
 37,878
 203,082
 71,725
End of year 289,045
 33,316
 81,490
 56,975
 291,493
 105,557
Proved undeveloped reserves:       
 
  
Beginning of year 352,519
 34,505
 93,258
 73,620
 349,620
 131,890
End of year 253,901
 64,825
 107,142
 83,215
 351,301
 141,765

F-36F-52

Laredo Petroleum, Holdings, Inc.
Supplemental oil and natural gas disclosures
December 31, 2012, 2011 and 2010

 Year ended December 31, 2011 Year ended December 31, 2013
(in thousands) 
Gas
(MMcf)
 
Oil
(MBbl)
 MBOE
 Oil
(MBbl)

Gas
(MMcf)
 MBOE
Proved developed and undeveloped reserves:            
Beginning of year 550,278
 44,847
 136,560
 98,141
 542,946
 188,632
Revisions of previous estimates (47,296) (1,124) (9,006) (17,956) 15,710
 (15,338)
Extensions, discoveries and other additions 129,846
 15,912
 37,553
 37,850
 192,229
 69,888
Purchases of reserves in place 
 
 
 170
 1,454
 412
Sale of reserves in place (1,220) (165,289) (28,768)
Production (31,711) (3,368) (8,654) (5,487) (34,348) (11,211)
End of year 601,117
 56,267
 156,453
 111,498
 552,702
 203,615
Proved developed reserves:            
Beginning of year 194,481
 12,420
 44,833
 33,316
 289,045
 81,490
End of year 248,598
 21,762
 63,195
 37,878
 203,082
 71,725
Proved undeveloped reserves:            
Beginning of year 355,797
 32,427
 91,727
 64,825
 253,901
 107,142
End of year 352,519
 34,505
 93,258
 73,620
 349,620
 131,890
  Year ended December 31, 2010
(in thousands) 
Gas
(MMcf)
 
Oil
(MBbl)
 MBOE
Proved developed and undeveloped reserves:      
Beginning of year 279,549
 5,928
 52,519
Revisions of previous estimates (14,619) 326
 (2,110)
Extensions, discoveries and other additions 306,729
 40,241
 91,363
Purchases of reserves in place 
 
 
Production (21,381) (1,648) (5,212)
End of year 550,278
 44,847
 136,560
Proved developed reserves:      
Beginning of year 135,204
 2,905
 25,439
End of year 194,481
 12,420
 44,833
Proved undeveloped reserves:      
Beginning of year 144,345
 3,023
 27,080
End of year 355,797
 32,427
 91,727
For the year ended December 31, 2012,2015, the Company's negative revision of 55,837124,180 MBOE of previously estimated quantities is primarily attributable to the removal of 50,845106,883 MBOE due to the combined effect of the removal of 378 proved undeveloped locations and the net effect of reinterpreting 34 undeveloped locations. The 378 locations that were removed were comprised of 182 vertical Wolfberry wells due to lower natural gascommodity prices and increased196 horizontal wells to better align the timing of their development costs for vertical Granite Wash locations inwith the Anadarko Basin and shallow Wolfberry vertical locations in the Permian Basin. Due to these factors, these locations became economically unattractive to develop and were replaced by new horizontal and/or oil development opportunities.Company's future drilling plans. The balanceremaining 17,297 MBOE of the negative revision of 4,993 MBOErevisions is due to a combination of pricing, performance pricing and other changes.changes to the proved developed producing and proved developed non-producing wells. Extensions, discoveries and other additions of 96,12722,388 MBOE during the year ended December 31, 2012, consist2015, consisted of 26,23519,719 MBOE primarily from the drilling of new wells during the year and 69,8922,669 MBOE from four new horizontal Middle Wolfcamp proved undeveloped locations added during the year, which increased the Company's proved reserves. The latter consists of 67,200 MBOE attributable to 317 locations in our Permian Basin play and 2,692 MBOE attributable to six locations in our Anadarko Granite Wash play. Purchases of minerals in place added 3,189 MBOE from acquisition of proved reserves in the Permian Basin. The oil and natural gas reference prices used in computing our reserves as of December 31, 2012 were $91.21 per barrel of oil and $2.63 per MMBtu of natural gas before price differentials.year.
For the year ended December 31, 2011,2014, the Company's negative revision of 9,00621,359 MBOE of previouspreviously estimated quantities is primarily attributable to the removal of 26,017 MBOE due to the removingcombined effect of uneconomicthe removal of 226 proved undeveloped locations and the net effect of reinterpreting 345 undeveloped locations. The 226 locations that were removed were comprised of vertical Wolfberry and horizontal laterals to better align with the proved developed producing wells. The increase of 4,658 MBOE, which offsets the overall negative revision, is due to increased capital cost.a combination of pricing, performance and other changes. Extensions, discoveries and other additions of 37,55376,539 MBOE during the year ended December 31, 2011, consist2014, consisted of 14,70934,782 MBOE primarily from the drilling of new wells during the year and 22,84441,757 MBOE from 113 new horizontal proved undeveloped locations

F-37

Laredo Petroleum Holdings, Inc.
Supplemental oil and natural gas disclosures
December 31, 2012, 2011 and 2010

added during the year, which increasedyear. Purchases of minerals in place added 256 MBOE from acquisition of proved reserves in the Company's proved reserves. The latter consists of 15,009 MBOE attributable to 155 locations in our Permian Basin play and 7,835 MBOE attributable to 47 locations in our Anadarko Granite Wash play. The oil and natural gas reference prices used in computing our reserves as of December 31, 2011 were $92.71 per barrel of oil and $3.99 per MMBtu of natural gas before price differentials.Basin.
For the year ended December 31, 2010,2013, the Company's negative revision of 2,11015,338 MBOE of previouspreviously estimated quantities is primarily attributable to the removal of 11,944 MBOE due to uneconomicthe combined effect of the removal of 174 proved undeveloped locations and the net effect of reinterpreting 501 undeveloped locations. The 174 locations that were removed were comprised of vertical Wolfberry and short horizontal laterals which were replaced with longer horizontal laterals to better align with future drilling plans. The remaining 3,394 MBOE of the negative revision is due to a combination of pricing, performance and other changes. Extensions, discoveries and other additions of 91,36369,888 MBOE during the year ended December 31, 2010, consist2013, consisted of 20,53322,245 MBOE primarily from the drilling of new wells during the year and 70,83047,643 MBOE from new proved undeveloped locations added during the year, which increased the Company's proved reserves, theyear. The latter of which consists of 63,44445,510 MBOE attributable to 957 vertical85 horizontal locations in ourthe Permian Basin play, 7,002Basin. Purchases of minerals in place added 412 MBOE attributable to 53 vertical locationsfrom acquisition of proved reserves in our Anadarko Granite Wash play and 384 MBOE attributable to eight locations in other areas. Thethe Permian Basin.

F-53

Laredo Petroleum, Inc.
Supplemental oil and natural gas reference prices used in computing our reserves as of December 31, 2010 were $75.96 per barrel of oil and $4.15 per MMBtu of natural gas before price differentials.disclosures
5.

e.    Standardized measure of discounted future net cash flows - (unaudited)
The standardized measure of discounted future net cash flows does not purport to be, nor should it be interpreted to present, the fair value of the oil, NGL and natural gas reserves of the property. An estimate of fair value would take into account, among other things, the recovery of reserves not presently classified as proved, the value of unprovedproved properties, and consideration of expected future economic and operating conditions.
The estimates of future cash flows and future production and development costs as of December 31, 2012, 20112015, 2014 and 20102013 are based on the unweighted arithmetic average first-day-of-the-month priceRealized Prices, which reflect adjustments to the Benchmark Prices for gravity, quality, local conditions, fuel and shrinkage and/or distance from market. All Realized Prices are held flat over the preceding 12-month period. Estimatedforecast period for all reserve categories in calculating the discounted future production ofnet revenues. Any effect from the Company's commodity hedges is excluded. In accordance with SEC regulations, the proved reserves were anticipated to be economically producible from the "as of date" forward based on existing economic conditions, including prices and estimated future production andcosts at which economic producibility from a reservoir was determined. These costs, held flat over the forecast period, include development costs, of proved reserves are based on currentoperating costs, ad valorem and economic conditions.production taxes and abandonment costs after salvage. Future income tax expenses are computed using the appropriate year-end statutory tax rates applied to the future pretax net cash flows from proved oil, NGL and natural gas reserves, less the tax basis of the Company's oil, NGL and natural gas properties. Reference prices used, before differentials were applied were $91.21, $92.71 and $75.96 per Bbl of oil and $2.63, $3.99 and $4.15 per MMBtu for December 31, 2012, 2011 and 2010, respectively. All wellhead prices are held flat over the forecast period for all reserve categories. The estimated future net cash flows are then discounted at a rate of 10%. The Company's net book value of evaluated oil, NGL and natural gas properties exceeded the full cost ceiling amount as of June 30, 2015, September 30, 2015 and December 31, 2015. See Note 2.g for discussion of the Benchmark Prices, Realized Prices and the corresponding non-cash full cost ceiling impairments recorded.
The standardized measure of discounted future net cash flows relating to proved oil, NGL and natural gas reserves is as follows for the periods presented:follows:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Future cash inflows $11,636,926
 $8,856,906
 $6,597,739
 $3,269,184
 $16,663,685
 $13,337,798
Future production costs (3,163,371) (2,562,237) (2,057,681) (1,321,471) (3,616,775) (3,059,368)
Future development costs (2,252,559) (1,959,818) (1,715,836) (376,701) (2,471,985) (2,250,950)
Future income tax expenses (1,433,373) (999,185) (602,551) 
 (2,827,763) (2,150,983)
Future net cash flows 4,787,623
 3,335,666
 2,221,671
 1,571,012
 7,747,162
 5,876,497
10% discount for estimated timing of cash flows (2,910,167) (1,934,807) (1,351,689) (740,265) (4,500,434) (3,554,293)
Standardized measure of discounted future net cash flows $1,877,456
 $1,400,859
 $869,982
 $830,747
 $3,246,728
 $2,322,204
In the foregoing determination of future cash inflows, sales prices used for oil and natural gas for December 31, 2012, 2011 and 2010 were estimated using the average price during the 12-month period, determined as the unweighted arithmetic average first-day-of-the-month price for each month. Prices were adjusted by lease for quality, transportation fees and regional price differentials. Future costs of developing and producing the proved oil and natural gas reserves reported at the end of each year shown were based on costs determined at each such year-end, assuming the continuation of existing economic conditions.
It is not intended that the FASB's standardized measure of discounted future net cash flows represent the fair market value of the Company's proved reserves. The Company cautions that the disclosures shown are based on estimates of proved reserve quantities and future production schedules which are inherently imprecise and subject to revision, and the 10% discount rate is arbitrary. In addition, costsprices and pricescosts as of the measurement date are used in the determinations, and no value may be assigned to probable or possible reserves.

F-38F-54

Laredo Petroleum, Holdings, Inc.
Supplemental oil and natural gas disclosures
December 31, 2012, 2011 and 2010

Changes in the standardized measure of discounted future net cash flows relating to proved oil, NGL and natural gas reserves are as follows for the periods presented:follows:
 For the years ended December 31, For the years ended December 31,
(in thousands) 2012 2011 2010 2015 2014 2013
Standardized measure of discounted future net cash flows, beginning of year $1,400,859
 $869,982
 $267,615
 $3,246,728
 $2,322,204
 $1,877,456
Changes in the year resulting from: 
     
 
  
Sales, less production costs (478,607) (430,967) (202,400) (290,501) (590,388) (543,312)
Revisions of previous quantity estimates (631,693) (70,021) (15,080) (2,444,322) (320,275) (190,961)
Extensions, discoveries and other additions 1,287,952
 529,041
 788,090
 192,979
 1,340,022
 1,166,481
Net change in prices and production costs 194,921
 566,034
 214,308
 (1,495,144) 145,740
 313,947
Changes in estimated future development costs (3,917) (163,399) (62,386) (2,974) (22,961) 921
Previously estimated development costs incurred during the period 137,510
 207,818
 20,082
 162,237
 92,135
 89,396
Purchases of reserves in place 25,041
 
 
 
 6,100
 7,604
Divestitures of reserves in place (29,149) 
 (239,148)
Accretion of discount 176,996
 106,170
 26,762
 424,453
 305,325
 234,852
Net change in income taxes (101,955) (176,165) (191,714) 997,805
 (266,757) (259,991)
Timing differences and other (129,651) (37,634) 24,705
 68,635
 235,583
 (135,041)
Standardized measure of discounted future net cash flows, end of year $1,877,456
 $1,400,859
 $869,982
 $830,747
 $3,246,728
 $2,322,204
Estimates of economically recoverable oil, NGL and natural gas reserves and of future net revenues are based upon a number of variable factors and assumptions, all of which are, to some degree, subjective and may vary considerably from actual results. Therefore, actual production, revenues, development and operating expenditures may not occur as estimated. The reserve data are estimates only, are subject to many uncertainties and are based on data gained from production histories and on assumptions as to geologic formations and other matters. Actual quantities of oil, NGL and natural gas may differ materially from the amounts estimated.


P—Note 21—Supplemental quarterly financial data - (unaudited)
The Company's results offrom continuing operations by quarter for the periods presented are as follows:
  Year ended December 31, 2012
(in thousands) 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
Revenues $150,348
 $140,624
 $144,700
 $152,408
Operating income 55,389
 41,523
 37,029
 37,839
Net income (loss) 26,235
 30,975
 (7,384) 11,828
Net income (loss) per common share: 
 
 
 
Basic $0.21
 $0.24
 $(0.06) $0.09
Diluted $0.20
 $0.24
 $(0.06) $0.09
  Year ended December 31, 2015
(in thousands, except per share data) 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
Revenues $150,694
 $182,331
 $150,340
 $123,275
Operating loss (26,498) (501,480) (927,859) (1,015,677)
Net loss (472) (397,034) (847,783) (964,647)
Net loss per common share:        
Basic $
 $(1.88) $(4.01) $(4.57)
Diluted $
 $(1.88) $(4.01) $(4.57)

 Year ended December 31, 2011
(in thousands) 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
Revenues $107,111
 $131,727
 $132,460
 $138,972
Operating income 49,162
 58,471
 54,603
 39,663
Net income 4,670
 41,072
 58,246
 1,566
Pro forma net income per common share:        
Basic 

 

 

 $0.01
Diluted 

 

 

 $0.01



  Year ended December 31, 2014
(in thousands, except per share data) 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
Revenues $173,310
 $183,044
 $200,241
 $237,290
Operating income 60,038
 64,561
 69,164
 32,623
Net income (loss) (213) (18,899) 83,407
 201,278
Net income (loss) per common share:        
Basic $
 $(0.13) $0.59
 $1.42
Diluted $
 $(0.13) $0.58
 $1.40

F-39F-55