UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

þQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 20172018
oTRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from             to             
Commission File Number: 000-29187-87

CARRIZO OIL & GAS, INC.
(Exact name of registrant as specified in its charter)

Texas 76-0415919
(State or other jurisdiction of
incorporation or organization)
 
(IRS Employer
Identification No.)
 
500 Dallas Street, Suite 2300, Houston, Texas 77002
(Address of principal executive offices) (Zip Code)
(713) 328-1000
(Registrant’s telephone number)
 ____________________________________________________________
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  þ    NO  ¨
Indicate by check mark whether the registrant has submitted electronically, and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    YES  þ    NO  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act (Check one): 
Large accelerated filer þ Accelerated filer ¨
 
Non-accelerated filer 
¨  (Do not check if a smaller reporting company)
 Smaller reporting company ¨
       
    Emerging growth company ¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ¨ 
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    YES  ¨    NO  þ
The number of shares outstanding of the registrant’s common stock, par value $0.01 per share, as of November 3, 20172, 2018 was 81,454,621.91,625,532.






TABLE OF CONTENTS
 PAGE
Part I. Financial Information 
Item 1.
 
 
 
 
 
Item 2.
Item 3.
Item 4.
Part II. Other Information 
Item 1.
Item 1A.
Item 2.
Item 3.
Item 4.
Item 5.
Item 6.
Signatures



Part I. Financial Information
Item 1. Consolidated Financial Statements (Unaudited)
CARRIZO OIL & GAS, INC.
CONSOLIDATED BALANCE SHEETS
(In thousands, except share and per share amounts)
(Unaudited)
 September 30,
2017
 December 31,
2016
 September 30,
2018
 December 31,
2017
Assets        
Current assets        
Cash and cash equivalents 
$5,092
 
$4,194
 
$2,415
 
$9,540
Accounts receivable, net 89,809
 64,208
 128,780
 107,441
Derivative assets 10,258
 
Other current assets 7,826
 4,586
 9,636
 5,897
Total current assets 102,727
 72,988
 151,089
 122,878
Property and equipment        
Oil and gas properties, full cost method        
Proved properties, net 1,882,575
 1,294,667
 2,124,767
 1,965,347
Unproved properties, not being amortized 740,205
 240,961
 579,275
 660,287
Other property and equipment, net 10,538
 10,132
 10,885
 10,176
Total property and equipment, net 2,633,318
 1,545,760
 2,714,927
 2,635,810
Deposit for pending acquisition of oil and gas properties 21,500
 
Other assets 9,681
 7,579
 23,482
 19,616
Total Assets 
$2,745,726
 
$1,626,327
 
$2,910,998
 
$2,778,304
        
Liabilities and Shareholders’ Equity        
Current liabilities        
Accounts payable 
$87,077
 
$55,631
 
$147,670
 
$74,558
Revenues and royalties payable 46,821
 38,107
 52,975
 52,154
Accrued capital expenditures 111,485
 36,594
 117,556
 119,452
Accrued interest 25,305
 22,016
 23,748
 28,362
Accrued lease operating expense 16,394
 12,377
Derivative liabilities 6,778
 22,601
 162,895
 57,121
Other current liabilities 24,579
 24,633
 50,918
 41,175
Total current liabilities 318,439
 211,959
 555,762
 372,822
Long-term debt 1,701,439
 1,325,418
 1,327,689
 1,629,209
Asset retirement obligations 24,671
 20,848
 17,071
 23,497
Derivative liabilities 77,184
 27,528
 102,103
 112,332
Deferred income taxes 4,699
 3,635
Other liabilities 21,914
 17,116
 8,703
 51,650
Total liabilities 2,143,647
 1,602,869
 2,016,027
 2,193,145
Commitments and contingencies 
 
    
Preferred stock        
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 250,000 issued and outstanding as of September 30, 2017 and none issued and outstanding as of
December 31, 2016
 213,400
 
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of September 30, 2018 and 250,000 issued and outstanding as of December 31, 2017 173,629
 214,262
Shareholders’ equity        
Common stock, $0.01 par value, 180,000,000 shares authorized; 81,454,621 issued and outstanding as of September 30, 2017 and 90,000,000 shares authorized; 65,132,499 issued and outstanding as of December 31, 2016 815
 651
Common stock, $0.01 par value, 180,000,000 shares authorized; 91,619,733 issued and outstanding as of September 30, 2018 and 81,454,621 issued and outstanding as of December 31, 2017 916
 815
Additional paid-in capital 1,926,798
 1,665,891
 2,132,253
 1,926,056
Accumulated deficit (1,538,934) (1,643,084) (1,411,827) (1,555,974)
Total shareholders’ equity 388,679
 23,458
 721,342
 370,897
Total Liabilities and Shareholders’ Equity 
$2,745,726
 
$1,626,327
 
$2,910,998
 
$2,778,304
The accompanying notes are an integral part of these consolidated financial statements.

CARRIZO OIL & GAS, INC.
CONSOLIDATED STATEMENTS OF OPERATIONSINCOME
(In thousands, except per share amounts)
(Unaudited)
 Three Months Ended
September 30,
 Nine Months Ended
September 30,
 Three Months Ended September 30,  Nine Months Ended September 30,
2017 2016 2017 20162018 2017 2018 2017
Revenues              
Crude oil
$152,101
 
$95,154
 
$422,999
 
$254,758

$254,525
 
$152,101
 
$679,242
 
$422,999
Natural gas liquids12,467
 5,616
 27,678
 15,119
33,798
 12,467
 71,969
 27,678
Natural gas16,711
 10,407
 48,440
 29,886
15,052
 16,711
 41,417
 48,440
Total revenues181,279
 111,177
 499,117
 299,763
303,375
 181,279
 792,628
 499,117
              
Costs and Expenses              
Lease operating34,874
 24,282
 100,767
 71,071
41,022
 34,874
 115,446
 100,767
Production taxes7,741
 4,886
 21,092
 12,940
14,516
 7,741
 37,578
 21,092
Ad valorem taxes1,736
 1,426
 5,776
 3,950
2,588
 1,736
 8,201
 5,776
Depreciation, depletion and amortization67,564
 48,949
 181,018
 160,492
80,108
 67,564
 217,005
 181,018
General and administrative, net16,029
 18,119
 49,328
 59,046
12,811
 16,029
 58,368
 49,328
(Gain) loss on derivatives, net24,377
 (11,744) (27,004) 29,938
55,388
 24,377
 152,698
 (27,004)
Interest expense, net20,673
 21,190
 62,350
 58,913
15,406
 20,673
 46,522
 62,350
Impairment of proved oil and gas properties
 105,057
 
 576,540
Other expense, net462
 499
 1,640
 1,568
Loss on extinguishment of debt
 
 8,676
 
Other (income) expense, net(690) 462
 2,305
 1,640
Total costs and expenses173,456
 212,664
 394,967
 974,458
221,149
 173,456
 646,799
 394,967
              
Income (Loss) Before Income Taxes7,823
 (101,487) 104,150
 (674,695)
Income tax benefit
 313
 
 
Net Income (Loss)
$7,823
 
($101,174) 
$104,150
 
($674,695)
Income Before Income Taxes82,226
 7,823
 145,829
 104,150
Income tax expense(880) 
 (1,682) 
Net Income
$81,346
 
$7,823
 
$144,147
 
$104,150
Dividends on preferred stock(2,249) 
 (2,249) 
(4,457) (2,249) (13,794) (2,249)
Net Income (Loss) Attributable to Common Shareholders
$5,574
 
($101,174) 
$101,901
 
($674,695)
Accretion on preferred stock(771) 
 (2,264) 
Loss on redemption of preferred stock
 
 (7,133) 
Net Income Attributable to Common Shareholders
$76,118
 
$5,574
 
$120,956
 
$101,901
              
Net Income (Loss) Attributable to Common Shareholders Per Common Share       
Net Income Attributable to Common Shareholders Per Common Share       
Basic
$0.07
 
($1.72) 
$1.44
 
($11.49)
$0.88
 
$0.07
 
$1.45
 
$1.44
Diluted
$0.07
 
($1.72) 
$1.43
 
($11.49)
$0.85
 
$0.07
 
$1.42
 
$1.43
              
Weighted Average Common Shares Outstanding              
Basic81,053
 58,945
 70,728
 58,705
86,727
 81,053
 83,461
 70,728
Diluted81,138
 58,945
 71,147
 58,705
89,039
 81,138
 85,221
 71,147
The accompanying notes are an integral part of these consolidated financial statements.

CARRIZO OIL & GAS, INC.
CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY
(In thousands, except share amounts)
(Unaudited)
 Common Stock Additional
Paid-in
Capital
 
Accumulated Deficit
 Total
Shareholders’
Equity
 Common Stock Additional
Paid-in
Capital
 
Accumulated Deficit
 Total
Shareholders’
Equity
 Shares Amount  Shares Amount 
Balance as of December 31, 2016 65,132,499
 
$651
 
$1,665,891
 
($1,643,084) 
$23,458
Balance as of December 31, 2017 81,454,621
 
$815
 
$1,926,056
 
($1,555,974) 
$370,897
Stock-based compensation expense 
 
 17,967
 
 17,967
 
 
 15,701
 
 15,701
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares 722,122
 8
 (36) 
 (28)
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares, net of forfeitures 665,112
 6
 (75) 
 (69)
Sale of common stock, net of offering costs 15,600,000
 156
 222,222
 
 222,378
 9,500,000
 95
 213,762
 
 213,857
Issuance of warrants 
 
 23,003
 
 23,003
Dividends on preferred stock 
 
 (2,249) 
 (2,249) 
 
 (13,794) 
 (13,794)
Accretion on preferred stock 
 
 (2,264) 
 (2,264)
Loss on redemption of preferred stock 
 
 (7,133) 
 (7,133)
Net income 
 
 
 104,150
 104,150
 
 
 
 144,147
 144,147
Balance as of September 30, 2017 81,454,621
 
$815
 
$1,926,798
 
($1,538,934) 
$388,679
Balance as of September 30, 2018 91,619,733
 
$916
 
$2,132,253
 
($1,411,827) 
$721,342
The accompanying notes are an integral part of these consolidated financial statements.


CARRIZO OIL & GAS, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
Nine Months Ended
September 30,
 Nine Months Ended September 30,
2017 20162018 2017
Cash Flows From Operating Activities      
Net income (loss)
$104,150
 
($674,695)
Adjustments to reconcile net income (loss) to net cash provided by operating activities   
Net income
$144,147
 
$104,150
Adjustments to reconcile net income to net cash provided by operating activities   
Depreciation, depletion and amortization181,018
 160,492
217,005
 181,018
Impairment of proved oil and gas properties
 576,540
(Gain) loss on derivatives, net(27,004) 29,938
152,698
 (27,004)
Cash received for derivative settlements, net7,714
 98,820
Cash received (paid) for derivative settlements, net(64,710) 7,714
Loss on extinguishment of debt8,676
 
Stock-based compensation expense, net8,462
 30,834
13,786
 8,462
Deferred income taxes1,063
 
Non-cash interest expense, net2,961
 3,105
1,878
 2,961
Other, net4,249
 2,427
4,100
 4,249
Changes in components of working capital and other assets and liabilities-      
Accounts receivable(25,885) 1,768
(12,763) (25,885)
Accounts payable14,748
 (20,294)10,863
 14,748
Accrued liabilities11,970
 (7,954)(9,336) 11,970
Other assets and liabilities, net(1,786) (3,134)(2,115) (1,786)
Net cash provided by operating activities280,597
 197,847
465,292
 280,597
Cash Flows From Investing Activities      
Capital expenditures(433,561) (346,245)(662,459) (433,561)
Acquisitions of oil and gas properties(692,006) 

 (692,006)
Proceeds from divestitures of oil and gas properties, net18,212
 15,331
Deposit for pending divestiture of oil and gas properties6,200
 
Deposit (paid for pending acquisition) received for pending divestiture of oil and gas properties(21,500) 6,200
Proceeds from divestitures of oil and gas properties377,693
 18,212
Other, net(3,804) (661)(2,687) (3,804)
Net cash used in investing activities(1,104,959) (331,575)(308,953) (1,104,959)
Cash Flows From Financing Activities      
Issuance of senior notes250,000
 

 250,000
Redemptions of senior notes and other long-term debt(330,435) 
Redemption of preferred stock(50,030) 
Borrowings under credit agreement1,311,875
 510,116
2,415,208
 1,311,875
Repayments of borrowings under credit agreement(1,183,275) (414,116)(2,396,671) (1,183,275)
Payments of debt issuance costs and credit facility amendment fees(8,964) (1,150)(627) (8,964)
Sale of common stock, net of offering costs222,378
 
213,857
 222,378
Sale of preferred stock, net of issuance costs236,404
 

 236,404
Payment of dividends on preferred stock(2,249) 
Payments of dividends on preferred stock(13,794) (2,249)
Other, net(909) (805)(972) (909)
Net cash provided by financing activities825,260
 94,045
Net cash provided by (used in) financing activities(163,464) 825,260
Net Increase (Decrease) in Cash and Cash Equivalents898
 (39,683)(7,125) 898
Cash and Cash Equivalents, Beginning of Period4,194
 42,918
9,540
 4,194
Cash and Cash Equivalents, End of Period
$5,092
 
$3,235

$2,415
 
$5,092
The accompanying notes are an integral part of these consolidated financial statements.

CARRIZO OIL & GAS, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
1. Basis of Presentation
Nature of Operations
Carrizo Oil & Gas, Inc. is a Houston-based energy company which, together with its subsidiaries (collectively, the “Company”), is actively engaged in the exploration, development, and production of crude oil, NGLs, and natural gas from resource plays located in the United States. The Company’s current operations are principally focused in proven, producing oil and gas plays in the Eagle Ford Shale in South Texas and the Permian Basin in West Texas.
Consolidated Financial Statements
The accompanying unaudited interim consolidated financial statements include the accounts of the Company after elimination of intercompany transactions and balances and have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) and therefore do not include all disclosures required for financial statements prepared in conformity with accounting principles generally accepted in the U.S. (“GAAP”). In the opinion of management, these financial statements include all adjustments (consisting of normal recurring accruals and adjustments) necessary to present fairly, in all material respects, the Company’s interim financial position, results of operations and cash flows. However, the results of operations for the periods presented are not necessarily indicative of the results of operations that may be expected for the full year. These financial statements and related notes included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s audited Consolidated Financial Statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 20162017 (“20162017 Annual Report”). Certain reclassifications have been made to prior period amounts to conform to the current period presentation. Such reclassifications had no material impact on prior period amounts.
2. Summary of Significant Accounting Policies
The Company has provided a discussion of significant accounting policies, estimates, and judgments in “Note 2. Summary of Significant Accounting Policies” of the Notes to Consolidated Financial Statements in its 2016 Annual Report. There have been no changes to the Company’s significant accounting policies since December 31, 2016, other than the recently adopted accounting pronouncement described below and the accounting for the ExL Acquisition and related financing. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties”, “Note 8. Preferred Stock”, “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for further details.
Recently Adopted Accounting PronouncementStandards
Stock Compensation.Revenue From Contracts with Customers In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”), which amends certain aspects of accounting for share-based payment arrangements. ASU 2016-09 revises or provides alternative accounting for the tax impacts of share-based payment arrangements, forfeitures, minimum statutory tax withholdings, and prescribes certain disclosures to be made in the period of adoption.
. Effective January 1, 2017,2018, the Company adopted ASU 2016-09. UsingNo. 2014-09, Revenue From Contracts With Customers (Topic 606) (“ASC 606”) using the modified retrospective approach as prescribed by ASU 2016-09,method and has applied the Company recognized previously unrecognized windfall tax benefits which resultedstandard to all existing contracts. ASC 606 supersedes previous revenue recognition requirements in ASC 605 - Revenue Recognition (“ASC 605”) and includes a cumulative-effect adjustmentfive-step revenue recognition model to retained earningsdepict the transfer of approximately $15.7 million. This adjustment increased deferred tax assets, whichgoods or services to customers in turn increasedan amount that reflects the valuation allowance by the same amount as of the beginning of 2017, resultingconsideration in a net cumulative-effect adjustment to retained earnings of zero.exchange for those goods or services. As a result of adoption, on a prospective basis as prescribed by ASU 2016-09, all windfall tax benefits and tax shortfalls will be recorded as income tax expense or benefit in the consolidated statements of operations. As long asadopting ASC 606, the Company did not have a cumulative-effect adjustment in retained earnings. The comparative information for the three and nine months ended September 30, 2017 has not been recast and continues to concludebe reported under the accounting standards in effect for that period. Additionally, adoption of ASC 606 did not impact net income attributable to common shareholders and the Company does not expect that it will do so in future periods.

The tables below summarize the impact of adoption for the three and nine months ended September 30, 2018:
   Three Months Ended September 30, 2018
  Under ASC 606 Under ASC 605 Increase % Increase
  (In thousands)  
Revenues        
Crude oil 
$254,525
 
$254,382
 
$143
 0.1%
Natural gas liquids 33,798
 32,018
 1,780
 5.6%
Natural gas 15,052
 14,280
 772
 5.4%
Total revenues 303,375
 300,680
 2,695
 0.9%
         
Costs and Expenses        
Lease operating 41,022
 38,327
 2,695
 7.0%
         
Income Before Income Taxes 
$82,226
 
$82,226
 
$—
 %
   Nine Months Ended September 30, 2018
  Under ASC 606 Under ASC 605 Increase % Increase
  (In thousands)  
Revenues        
Crude oil 
$679,242
 
$678,834
 
$408
 0.1%
Natural gas liquids 71,969
 68,253
 3,716
 5.4%
Natural gas 41,417
 39,439
 1,978
 5.0%
Total revenues 792,628
 786,526
 6,102
 0.8%
         
Costs and Expenses        
Lease operating 115,446
 109,344
 6,102
 5.6%
         
Income Before Income Taxes 
$145,829
 
$145,829
 
$—
 %
Changes to crude oil, NGL, and natural gas revenues and lease operating expense are due to the conclusion that the valuation allowance against its net deferred tax assets is necessary, this portionCompany controls the product throughout processing before transferring to the customer for certain natural gas processing arrangements. Therefore, any transportation, gathering, and processing fees incurred prior to transfer of ASU 2016-09 will have no significant effect on the Company’s consolidated balance sheets or consolidated statements of operations. In addition, windfall tax benefitscontrol are now required to be presentedincluded in cash flows fromlease operating activities in the consolidated statements of cash flows as compared to cash flows from financing activities, which the Company has elected to adopt prospectively. There are no periods presented that would require reclassification of cash flows had the Company elected to adopt this guidance retrospectively. Further, the Company has elected to account for forfeitures as they occur, which resulted in an immaterial cumulative-effect adjustment to retained earnings.
Recently Issued Accounting Pronouncementsexpense.
Business Combinations. In January 2017, the FASBFinancial Accounting Standards Board (“FASB”) issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”), which clarifies the definition of a business to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals)divestitures) of assets or businesses. Effective January 1, 2018, the Company adopted ASU 2017-01 isusing the prospective method and will apply the clarified definition of a business to be applied on a

prospective basisfuture acquisitions and is effective for interim and annual periods beginning after December 15, 2017, with early adoption permitted. The Company currently plans to adopt the guidance on the effective date of January 1, 2018.divestitures.
Statement of Cash Flows. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”), which is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. The guidance addresses eight specific cash flow issues for which current GAAP is either unclear or does not include specific guidance. Effective January 1, 2018, the Company adopted ASU 2016-15 is effective for interim and annual periods beginning after December 15, 2017, with early adoption permitted, provided that it is adopted in its entirety inusing the same period. Companies are required to use a full retrospective approach meaningas prescribed by ASU 2016-15. There were no changes to the standard is applied to all periods presented. The Company does not expect the impact of adopting ASU 2016-15 to have a material effect on its consolidated statementsstatement of cash flows and related disclosures uponas a result of adoption. The Company plans to adopt the guidance on the effective date of January 1, 2018.
Recently Issued Accounting Pronouncements
Leases. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which significantly changes accounting for leases by requiring that lessees recognize a right-of-use (“ROU”) asset and a related lease liability representing the obligation to make lease payments, for virtually all lease transactions. ASU 2016-02 does not apply to leases of mineral rights to explore for or use crude oil and natural gas. Additional disclosures about an entity’s lease transactions will also be required. ASU 2016-02 defines a lease as “a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment (an identified asset) for a period of time in exchange for consideration.” ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018 with early adoption permitted. ASU 2016-02 requires companies to recognize and measure leases at the beginning of the earliest period presented in the financial statements using a modified retrospective approach.

The Company is currently assessingin the impactprocess of reviewing and determining the contracts to which ASU 2016-02 which includes an analysisapplies with the assistance of existinga third party consultant. These include contracts includingsuch as non-cancelable leases, drilling rig contracts, pipeline gathering, transportation and gas processing agreements, and contracts for the use of vehicles and well equipment. The Company continues to review current accounting policies, controls, processes, and disclosures that will change as a result of adopting ASU 2016-02. Appropriate systems, controls, and processes to support the recognition and disclosure requirements of the new standard are also being evaluated.standard. Based upon its initial assessment, the Company expects the adoption of ASU 2016-02 will result in: (i) an increase in assets and liabilities due to the required recognition of ROU assets and corresponding lease liabilities, (ii) an increaseincreases in depreciation, depletion and amortization and interest expense, (iii) an increasedecreases in interestlease operating and general and administrative expense and (iv) additional disclosures.disclosures, however, the full impact to the Company’s consolidated financial statements and related disclosures is still being evaluated. Currently, the Company plans to make certain elections allowing the Company not to reassess contracts that commenced prior to adoption, to continue applying its current accounting policy for land easements, and not to recognize ROU assets or lease liabilities for short-term leases. The Company plans to adopt the guidance on the effective date of January 1, 2019.
Revenue From Contracts With Customers. In May 2014, the FASB issued As permitted by ASU No. 2014-09, 2018-11, Leases (Topic 842): Targeted Improvements, the Company does not expect to adjust comparative-period financial statements.
Revenue From Contracts With Customers (Topic 606) (“ASU 2014-09”). UnderRecognition
The Company’s revenues are comprised solely of revenues from customers and include the new standard,sale of crude oil, NGLs, and natural gas. The Company believes that the disaggregation of revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure ofinto these three major product types appropriately depicts how the nature, amount, timing and uncertainty of revenue and cash flows arisingare affected by economic factors based on its single geographic location. Crude oil, NGL, and natural gas revenues are recognized at a point in time when production is sold to a purchaser at a fixed or determinable price, delivery has occurred, control has transferred and collectability of the revenue is probable. The transaction price used to recognize revenue is a function of the contract billing terms. Revenue is invoiced by calendar month based on volumes at contractually based rates with payment typically required within 30 days of the end of the production month. At the end of each month when the performance obligation is satisfied, the variable consideration can be reasonably estimated and amounts due from customers are accrued in “Accounts receivable, net” in the consolidated balance sheets. As of September 30, 2018 and December 31, 2017, receivables from contracts with customers. ASU 2014-09customers were $100.2 million and $85.6 million, respectively. Taxes assessed by governmental authorities on crude oil, NGL, and natural gas sales are presented separately from such revenues in the consolidated statements of income.
Crude oil sales. Crude oil production is effective for interim and annual periods beginning after December 15, 2017 using either a full retrospective approach, which is described above, or a modified retrospective approach, meaningprimarily sold at the cumulative effectwellhead at an agreed upon index price, net of initially applying the standardpricing differentials. Revenue is recognized when control transfers to the purchaser at the wellhead, net of transportation costs incurred by the purchaser.
Natural gas and NGL sales. Natural gas is delivered to a midstream processing entity at the wellhead or the inlet of the midstream processing entity’s system. The midstream processing entity gathers and processes the natural gas and remits proceeds for the resulting sales of NGLs and residue gas. The Company evaluates whether it is the principal or agent in the most current period presentedtransaction and has concluded it is the principal and the purchasers of the NGLs and residue gas are the customers. Revenue is recognized on a gross basis, with gathering, processing and transportation fees recognized as lease operating expense in the financial statements.consolidated statements of income as the Company maintains control throughout processing.
Transaction Price Allocated to Remaining Performance Obligations. The Company is currently assessingapplied the impact of ASU 2014-09 which includes an analysis of existing contracts and current accounting policies and disclosures to identify potential differences that would result from applyingpractical expedient in ASC 606 exempting the requirementsdisclosure of the new standard. Appropriate changestransaction price allocated to business processes, systems or controls will be implementedremaining performance obligations if the variable consideration is allocated entirely to support recognitiona wholly unsatisfied performance obligation. Each unit of product typically represents a separate performance obligation, therefore, future volumes are wholly unsatisfied and disclosure underof the new standard. Although its assessment is in progress, the Company currently does not expect the adoption of ASU 2014-09transaction price allocated to have a material impact on its consolidated financial statements because existing contractualremaining performance obligations which determine when and how revenue is recognized, are not materially changed under the new standard; thus, revenue associated with the majority of the Company’s existing contracts will continue to be recognized as control of products is transferred to the customer. The Company plans to adopt the guidance using the modified retrospective method on the effective date of January 1, 2018.required.

Net Income (Loss)Attributable to Common Shareholders Per Common Share
SupplementalThe following table summarizes the calculation of net income (loss)attributable to common shareholders per common share:
   Three Months Ended September 30,  Nine Months Ended September 30,
  2018 2017 2018 2017
  
(In thousands, except
per share amounts)
Net Income 
$81,346
 
$7,823
 
$144,147
 
$104,150
Dividends on preferred stock (4,457) (2,249) (13,794) (2,249)
Accretion on preferred stock (771) 
 (2,264) 
Loss on redemption of preferred stock 
 
 (7,133) 
Net Income Attributable to Common Shareholders 
$76,118
 
$5,574
 
$120,956
 
$101,901
         
Basic weighted average common shares outstanding 86,727
 81,053
 83,461
 70,728
Dilutive effect of restricted stock and performance shares 1,272
 85
 967
 253
Dilutive effect of common stock warrants 1,040
 
 793
 166
Diluted weighted average common shares outstanding 89,039
 81,138
 85,221
 71,147
         
Net Income Attributable to Common Shareholders Per Common Share        
Basic 
$0.88
 
$0.07
 
$1.45
 
$1.44
Diluted 
$0.85
 
$0.07
 
$1.42
 
$1.43
The computation of diluted net income attributable to common shareholders per common share information is provided below:
   Three Months Ended
September 30,
 Nine Months Ended
September 30,
  2017 2016 2017 2016
  (In thousands, except per share amounts)
Net Income (Loss) Attributable to Common Shareholders 
$5,574
 
($101,174) 
$101,901
 
($674,695)
Basic weighted average common shares outstanding 81,053
 58,945
 70,728
 58,705
Effect of dilutive instruments 85
 
 419
 
Diluted weighted average common shares outstanding 81,138
 58,945
 71,147
 58,705
Net Income (Loss) Attributable to Common Shareholders Per Common Share        
Basic 
$0.07
 
($1.72) 
$1.44
 
($11.49)
Diluted 
$0.07
 
($1.72) 
$1.43
 
($11.49)
When the Company recognizes a net loss, as was the case for the three monthsexcluded restricted stock, performance shares and nine months ended September 30, 2016, all potentially dilutive shares are anti-dilutive and are consequently excluded from the calculation of diluted net loss per common share.stock warrants that were anti-dilutive. The following table below presents the weighted average dilutive and anti-dilutive securities outstanding for the periods presented which consisted of unvested restricted stock awards and units, unvested performance shares and exercisable common stock warrants:presented:
   Three Months Ended
September 30,
 Nine Months Ended
September 30,
  2017 2016 2017 2016
  (In thousands)
Dilutive 85
 
 419
 
Anti-dilutive 882
 698
 120
 664
   Three Months Ended September 30,  Nine Months Ended September 30,
  2018 2017 2018 2017
  (In thousands)
Anti-dilutive restricted stock and performance shares 
 730
 5
 120
Anti-dilutive common stock warrants 
 152
 
 
Total weighted average anti-dilutive securities 
 882
 5
 120
3. Acquisitions and Divestitures of Oil and Gas Properties
2018 Acquisitions and Divestitures
Devon Acquisition. On August 13, 2018, the Company entered into a purchase and sale agreement with Devon Energy Production Company, L.P. (“Devon”), a subsidiary of Devon Energy Corporation, to acquire oil and gas properties in the Delaware Basin in Reeves and Ward counties, Texas (the “Devon Properties”) for an agreed upon price of $215.0 million, with an effective date of April 1, 2018, subject to customary purchase price adjustments (the “Devon Acquisition”). The Company paid $21.5 million as a deposit on August 13, 2018 and $183.4 million upon initial closing on October 17, 2018, which included purchase price adjustments primarily related to the net cash flows from the effective date to the closing date, for an estimated aggregate purchase price of $204.9 million. The final purchase price remains subject to post-closing adjustments.
Under one of the Company’s existing joint operating agreements covering acreage in the vicinity of the Devon Properties, the other party to the joint operating agreement has a right to purchase a 20% interest in certain of the acres within the Devon Properties acquired by the Company at a price based on the Company’s cost to acquire the Devon Properties. This right is exercisable for a 30-day period after the Company delivers a specified notice following the closing of the Devon Acquisition and, if not exercised, will expire in the fourth quarter of 2018. To the extent that the other party exercises its right to make such purchase, the Company’s interests in the Devon Properties will be reduced and the proceeds received will be recognized as a reduction of proved oil and gas properties.
The Company funded the Devon Acquisition with net proceeds from the common stock offering completed on August 17, 2018, which, pending the closing of the Devon Acquisition, were used to temporarily repay a portion of the borrowings outstanding under the revolving credit facility. See “Note 9. Shareholders’ Equity and Stock-Based Compensation” for details regarding the common stock offering.

The Devon Acquisition will be accounted for as a business combination. The Company has not completed its initial allocation of the purchase price to the assets acquired and liabilities assumed based on their estimated acquisition date fair values. The Company will disclose the allocation of the purchase price as well as other related disclosures in its Annual Report on Form 10-K for the year ended December 31, 2018.
Delaware Basin Divestiture. On July 11, 2018, the Company closed on the divestiture of certain non-operated assets in the Delaware Basin for an agreed upon price of $30.0 million, with an effective date of May 1, 2018, subject to customary purchase price adjustments. The Company received $31.4 million upon closing on July 11, 2018 and paid $0.5 million upon post-closing on October 22, 2018, for aggregate net proceeds of $30.9 million.
Eagle Ford Divestiture. On December 11, 2017, the Company entered into a purchase and sale agreement with EP Energy E&P Company, L.P. to sell a portion of its assets in the Eagle Ford Shale for an agreed upon price of $245.0 million, with an effective date of October 1, 2017, subject to adjustment and customary terms and conditions. The Company received $24.5 million as a deposit on December 11, 2017, $211.7 million upon closing on January 31, 2018, $10.0 million for leases that were not conveyed at closing on February 16, 2018, and paid $0.5 million upon post-closing on July 19, 2018, for aggregate net proceeds of $245.7 million.
Niobrara Divestiture.On November 20, 2017, the Company entered into a purchase and sale agreement to sell substantially all of its assets in the Niobrara Formation for an agreed upon price of $140.0 million, with an effective date of October 1, 2017, subject to customary purchase price adjustments. The Company received $14.0 million as a deposit on November 20, 2017, $122.6 million upon closing on January 19, 2018, and paid $1.0 million upon post-closing on August 14, 2018, for aggregate net proceeds of $135.6 million. As part of this divestiture, the Company agreed to a contingent consideration arrangement (the “Contingent Niobrara Consideration”), which was determined to be an embedded derivative. As a result, the asset is recorded at fair value in the consolidated balance sheets with all gains and losses as a result of changes in the fair value between periods recognized in the consolidated statements of income in the period in which the changes occur. See “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for further details.
The aggregate net proceeds for each of the 2018 divestitures discussed above were recognized as a reduction of proved oil and gas properties with no gain or loss recognized.
2017 Acquisitions and Divestitures
ExL Acquisition. On June 28, 2017, the Company entered into a purchase and sale agreement with ExL Petroleum Management, LLC and ExL Petroleum Operating Inc. (together “ExL”) to acquire oil and gas properties located in the Delaware Basin in Reeves and Ward Counties,counties, Texas (the “ExL Properties”) for a purchasean agreed upon price of $648.0 million, with an effective date of May 1, 2017, subject to customary purchase price adjustments (the “ExL Acquisition”). The transaction had an effective date of May 1, 2017. The Company paid $75.0 million to the seller as a deposit on June 28, 2017, and $601.0 million upon closing on August 10, 2017, and $3.8 million upon post-closing on December 8, 2017 for aggregate cash consideration of $679.8 million, which included preliminary purchase price adjustments primarily related to the net cash flows from the acquired wells and capital expenditures from the effective date to the closing date. Upon closingAs part of the ExL Acquisition, the Company became the operator of the ExL Properties with an approximate 70% average working interest.
The Company also agreed to pay an additional $50.0 million per year if the average daily closing spot price of a barrel of West Texas Intermediate crude oil as measured by the U.S. Energy Information Administration (the “EIA WTI average price”) is above $50.00 for any of the years of 2018, 2019, 2020 and 2021, with such payments due on January 29, 2019, January 28, 2020, January 28, 2021 and January 28, 2022, respectively. This paymentcontingent consideration arrangement (the “Contingent ExL Payment”Consideration”) will be zero for the respective year if such EIA WTI average price of a barrel of oil is $50.00 or below for any of such years, and the Contingent ExL Payment is capped at $125.0 million in the aggregate. The Company, which was determined that the Contingent ExL Payment isto be an embedded derivative and has reflectedderivative. As a result, the liability is recorded at fair value in the consolidated financial statements. Thebalance sheets with all gains and losses as a result of changes in the fair value between periods recognized in the consolidated statements of income in the Contingent ExL Payment as of September 30, 2017 and August 10, 2017 was $60.3 million and $52.3 million, respectively.period in which the changes occur. See “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for further details.
The Company funded the ExL Acquisition with net proceeds from the sale of preferred stock on August 10, 2017, net proceeds from the common stock offering completed on July 3, 2017, and net proceeds from the senior notes offering completed on July 14, 2017. See “Note 8. Preferred Stock” for details regarding the sale of Preferred Stock, “Note 9. Shareholders’ Equity and Stock-Based Compensation” for details regarding the common stock offering and “Note 6. Long-Term Debt” for details regarding the senior notes offering.
The ExL Acquisition was accounted for under the acquisition method of accounting wherebyas a business combination, therefore, the purchase price was allocated to the assets acquired and the liabilities assumed based on their estimated acquisition date fair values based on then currently available information. A combination of a discounted cash flow model and market data was used by a third-party valuation specialist in

determining the fair value of the oil and gas properties. Significant inputs into the calculation included future commodity prices,forward oil and gas price curves, estimated volumes of oil and gas reserves, expectations for timing and amount of future development and operating costs, future plugging and abandonment costs and a risk adjusted discount rate. The fair value of the Contingent ExL PaymentConsideration was determined by a third-party valuation specialist using a Monte Carlo simulation. Significant inputs into the calculation included future commodity prices,forward oil and gas price curves, volatility factors, for the future commodity prices and a risk adjusted discount rate. See “Note 11. Fair Value Measurements” for further details.
The purchase price allocation for the ExL Acquisition is preliminary and subject to change based on updates to purchase price adjustments primarily related to net cash flows from the acquired wells and capital expenditures from the effective date to the closing date. The Company currently expects to finalize its allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date during the third quarter of 2018.
The following table presents the purchase price and the preliminaryfinal allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date.
  Preliminary Purchase Price Allocation
  (In thousands)
Assets  
Other current assets 
$106
Oil and gas properties  
Proved properties 292,551294,754
Unproved properties 443,194
Total oil and gas properties 
$735,745737,948
Total assets acquired 
$735,851738,054
   
Liabilities  
Revenues and royalties payable 
$5,0365,785
Asset retirement obligations 153
Contingent ExL PaymentConsideration 52,300
Total liabilities assumed 
$57,48958,238
Net Assets Acquired 
$678,362679,816
IncludedThe results of operations for the ExL Acquisition have been included in the Company’s consolidated statements of operationsincome since the August 10, 2017 closing date, including total revenues and net income attributable to common shareholders for the three and nine months ended September 30, 2018 and 2017 are total revenues of $14.0 million and income before income taxes of $11.4 million fromas shown in the ExL Acquisition, representing activity of the acquired properties subsequent to the closing of the transaction through September 30, 2017.table below:
   Three Months Ended September 30,  Nine Months Ended September 30,
  2018 2017 2018 2017
  (In thousands)
Total revenues 
$71,525
 
$14,016
 
$167,764
 
$14,016
         
Net Income Attributable to Common Shareholders 
$57,466
 
$11,393
 
$134,317
 
$11,393
Pro Forma Operating Results (Unaudited). The following unaudited pro forma financial information presents a summary of the Company’s consolidated results of operations for the three and nine month periodsmonths ended September 30, 2017, and 2016, assuming the ExL Acquisition had been completed as of January 1, 2016, including adjustments to reflect the fair values assigned to the assets acquired and liabilities assumed. The pro forma financial information does not purport to represent what the actual results of operations would have been had the transactions been completed as of the date assumed, nor is this information necessarily indicative of future consolidated results of operations. The Company believes the assumptions used provide a reasonable basis for reflecting the significant pro forma effects directly attributable to the ExL Acquisition.
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017
 (In thousands, except per share amounts) (In thousands, except per share amounts)
Total revenues 
$189,499
 
$115,065
 
$534,607
 
$305,074
 
$189,499
 
$534,607
Net Income (Loss) Attributable to Common Shareholders 
$14,654
 
($106,598) 
$115,053
 
($688,902)
Net Income Attributable to Common Shareholders 
$14,654
 
$115,053
            
Net Income (Loss) Attributable to Common Shareholders Per Common Share        
Net Income Attributable to Common Shareholders Per Common Share    
Basic 
$0.18
 
($1.43) 
$1.63
 
($9.27) 
$0.18
 
$1.63
Diluted 
$0.18
 
($1.43) 
$1.62
 
($9.27) 
$0.18
 
$1.62
        
Weighted Average Common Shares Outstanding        
Basic 81,053
 74,545
 70,728
 74,305
Diluted 81,138
 74,545
 71,147
 74,305
Sanchez Acquisition.Marcellus Divestiture. On December 14, 2016,October 5, 2017, the Company completed its initial closing of the acquisition of oilentered into a purchase and gas properties in the Eagle Ford Shale from Sanchez Energy Corporation and SN Cotulla Assets,sale agreement with BKV Chelsea, LLC, a subsidiary of Sanchez Energy Corporation (the “Sanchez Acquisition”). The transaction hadKalnin Ventures LLC, to sell substantially all of its assets in the Marcellus Shale for an effective date of June 1, 2016 and was accounted for under the acquisition method of accounting whereby the purchase price was allocated to the assets acquired and liabilities assumed based on their estimated acquisition date fair values based on then available information.
At the time of the initial closing, an adjustment to the purchaseagreed upon price of $16.8$84.0 million. The Company received $6.3 million was made for leases that were not conveyed to the Company. On January 9,into escrow as a deposit on October 5, 2017 and April 13,$67.6 million upon closing on November 21, 2017, for aggregate net proceeds of $73.9 million. As part of this divestiture, the Company paid $7.0 millionagreed to a contingent consideration arrangement (the “Contingent Marcellus Consideration”), which was determined to be an embedded derivative. As a result, the asset is recorded at fair value in the consolidated balance sheets with all gains and $9.8 million, respectively, for these outstanding leases when conveyed tolosses as a result of changes in the Company.
The following presents the allocation of the purchase price to the assets acquired and liabilities assumed as of the acquisition date.
Purchase Price Allocation
(In thousands)
Assets
Other current assets
$477
Oil and gas properties
Proved properties99,938
Unproved properties74,536
Total oil and gas properties
$174,474
Total assets acquired
$174,951
Liabilities
Revenues and royalties payable
$1,442
Other current liabilities323
Asset retirement obligations2,054
Other liabilities1,078
Total liabilities assumed
$4,897
Net Assets Acquired
$170,054
Includedfair value between periods recognized in the consolidated statements of operationsincome in the period in which the changes occur. See “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for further details.
Effective August 2008, the threeCompany’s wholly-owned subsidiary, Carrizo (Marcellus) LLC, entered into a joint venture with ACP II Marcellus LLC (“ACP II”), an affiliate of Avista Capital Partners, LP, a private equity fund (Avista Capital Partners, LP, together with its affiliates, “Avista”). There have been no revenues, expenses, or operating cash flows in the Avista Marcellus joint venture during the years ended December 31, 2015, 2016 and 2017 or during the nine months ended September 30, 2017 are total revenues2018. The Avista Marcellus joint venture agreements terminated during the third quarter of $9.1 million and $23.2 million, respectively, and income before income taxes of $4.0 million and $7.1 million, respectively, from2018 in connection with the Sanchez Acquisition, representing activitysale of the acquired properties subsequent to the closingremaining immaterial assets.
Steven A. Webster, Chairman of the transaction through September 30, 2017.
DivestituresCompany’s Board of Directors, serves as Co-Managing Partner and President of Avista Capital Holdings, LP. ACP II’s Board of Managers has the sole authority for determining whether, when and to what extent any cash distributions will be declared and paid to members of ACP II. Mr. Webster is not a member of ACP II’s Board of Managers. The terms of the Avista Marcellus joint venture were approved by a special committee of the Company’s independent directors.
PotentialUtica Divestiture of Utica Assets.. On August 31, 2017, the Company entered into a purchase and sale agreement to sell substantially all of its assets in the Utica Shale located primarily in Guernsey County, Ohio, for an agreed upon price of $62.0 million. The transaction has an effective date of April 1, 2017 and is expected to close by the end of November 2017. The Company received $6.2 million from the buyer as a deposit on August 31, 2017.
The2017, $54.4 million upon closing on November 15, 2017, and $2.5 million upon post-closing on December 28, 2017, for aggregate net proceeds of $63.1 million. As part of this divestiture, the Company could also receiveagreed to a contingent consideration of $5.0 million per year if the average daily closing spot price of a barrel of West Texas Intermediate crude oil as measured by the U.S. Energy Information Administration (the “EIA WTI average price”) is above $50.00, $53.00, and $56.00 for the years of 2018, 2019, and 2020, respectively, with such receipts due on January 29, 2019, January 28, 2020, and January 28, 2021, respectivelyarrangement (the “Contingent Utica Consideration”). The Contingent Utica Consideration will, which was determined to be zeroan embedded derivative. As a result, the asset is recorded at fair value in the consolidated balance sheets with all gains and losses as a result of changes in the fair value between periods recognized in the consolidated statements of income in the period in which the changes occur. See “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for the respective year if such EIA WTI average price of a barrel of oil is at or below the per barrel amounts listed above for any of such years, and is capped at $15.0 million.further details.
Other Assets.Delaware Basin Divestiture. During the first quarter of 2017, the Company sold a small undeveloped acreage position in the Delaware Basin for aggregate net proceeds of $15.3 million.
The aggregate net proceeds from this salefor each of the 2017 divestitures discussed above were recognized as a reduction of proved oil and gas properties.properties with no gain or loss recognized.
2016 Acquisitions and Divestitures
Sanchez Acquisition. On October 24, 2016, the Company entered into a purchase and sale agreement with Sanchez Energy Corporation and SN Cotulla Assets, LLC, a subsidiary of Sanchez Energy Corporation to acquire oil and gas properties located in the Eagle Ford Shale for an agreed upon price of $181.0 million, with an effective date of June 1, 2016, subject to customary purchase price adjustments. The Company paid $10.0 million as a deposit on October 24, 2016, $143.5 million upon initial closing on December 14, 2016, and $7.0 million and $9.8 million on January 9, 2017 and April 13, 2017, respectively, for leases that were not conveyed to the Company at the time of initial closing, for aggregate cash consideration of $170.3 million, which included purchase price adjustments primarily related to the net cash flows from the effect date to the closing date.
The Company did not have any material divestitures in 2016.

4. Property and Equipment, Net
As of September 30, 20172018 and December 31, 2016,2017, total property and equipment, net consisted of the following:
 September 30,
2017
 December 31,
2016
 September 30,
2018
 December 31,
2017
 (In thousands) (In thousands)
Oil and gas properties, full cost method        
Proved properties 
$5,452,201
 
$4,687,416
 
$5,988,301
 
$5,615,153
Accumulated depreciation, depletion and amortization and impairments (3,569,626) (3,392,749) (3,863,534) (3,649,806)
Proved properties, net 1,882,575
 1,294,667
 2,124,767
 1,965,347
Unproved properties, not being amortized        
Unevaluated leasehold and seismic costs 697,370
 211,067
 516,537
 612,589
Capitalized interest 42,835
 29,894
 62,738
 47,698
Total unproved properties, not being amortized 740,205
 240,961
 579,275
 660,287
Other property and equipment 25,344
 23,127
 28,134
 25,625
Accumulated depreciation (14,806) (12,995) (17,249) (15,449)
Other property and equipment, net 10,538
 10,132
 10,885
 10,176
Total property and equipment, net 
$2,633,318
 
$1,545,760
 
$2,714,927
 
$2,635,810

Average depreciation, depletion and amortization (“DD&A”) per Boe of proved properties was $13.04$13.29 and $12.72$13.04 for the three months ended September 30, 20172018 and 2016,2017, respectively, and $12.73$13.57 and $13.79$12.73 for the nine months ended September 30, 20172018 and 2016,2017, respectively.
The Company capitalized internal costs of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration and development activities totaling $3.3$2.9 million and $2.7$3.3 million for the three months ended September 30, 20172018 and 2016,2017, respectively, and $10.6$15.6 million and $8.5$10.6 million for the nine months ended September 30, 20172018 and 2016,2017, respectively.
Unproved properties, not being amortized, include unevaluated leasehold and seismic costs associated with specific unevaluated properties and related capitalized interest. The Company capitalized interest costs associated with its unproved properties totaling $8.5 million and $2.9 million for the three months ended September 30, 2018 and 2017 and 2016, respectively,$27.6 million and $16.2 million and $13.4 million for the nine months ended September 30, 2018 and 2017, and 2016, respectively.
Impairment of Proved Oil and Gas Properties
At the end of each quarter, the net book value of oil and gas properties, less related deferred income taxes, are limited to the “cost center ceiling” equal to (i) the sum of (a) the present value of estimated future net revenues from proved oil and gas reserves, less estimated future expenditures to be incurred in developing and producing the proved reserves computed using a discount factor of 10%, (b) the costs of unproved properties not being amortized, and (c) the lower of cost or estimated fair value of unproved properties included in the costs being amortized; less (ii) related income tax effects. Any excess of the net book value of oil and gas properties, less related deferred income taxes, over the cost center ceiling is recognized as an impairment of proved oil and gas properties. An impairment recognized in one period may not be reversed in a subsequent period even if higher commodity prices in the future result in a cost center ceiling in excess of the net book value of oil and gas properties, less related deferred income taxes.
The estimated future net revenues used in the cost center ceiling are calculated using the average realized prices for sales of crude oil, NGLs, and natural gas on the first calendar day of each month during the 12-month period prior to the end of the current period (“12-Month Average Realized Price”), held flat for the life of the production, except where different prices are fixed and determinable from applicable contracts for the remaining term of those contracts. Prices do not include the impact of derivative instruments as the Company elected not to meet the criteria to qualify derivative instruments for hedge accounting treatment.

The Company did not recognize impairments of proved oil and gas properties for the three and nine months ended September 30, 2017. Primarily due to declines in the 12-Month Average Realized Prices of crude oil, the Company recognized impairments of proved oil and gas properties for the three and nine months ended September 30, 2016. Details of the 12-Month Average Realized Price of crude oil for the three and nine months ended September 30, 2017 and 2016 and the impairments of proved oil and gas properties for the three and nine months ended September 30, 2016 are summarized in the table below: 
   Three Months Ended
September 30,
 Nine Months Ended
September 30,
  2017 2016 2017 2016
Impairment of proved oil and gas properties (in thousands) 
$—
 $105,057 
$—
 $576,540
Crude Oil 12-Month Average Realized Price ($/Bbl) - Beginning of period $46.80 $39.84 $39.60 $47.24
Crude Oil 12-Month Average Realized Price ($/Bbl) - End of period $47.74 $38.36 $47.74 $38.36
Crude Oil 12-Month Average Realized Price percentage increase (decrease) during period 2% (4%) 21% (19%)
5. Income Taxes
The Company’s estimated annual effective income tax rates are used to allocate expected annual income tax expense or benefit to interim periods. The rates are the ratio of estimated annual income tax expense or benefit to estimated annual income or loss before income taxes by taxing jurisdiction, except for discrete items, which areexcluding significant unusual or infrequent items, forthe tax effects of statutory rate changes, certain changes in the assessment of the realizability of deferred tax assets, and excess tax benefits or deficiencies related to the vesting of stock-based compensation awards, which income taxes are computed and recordedrecognized as discrete items in the interim period in which the discrete item occurs. The estimated annual effective income tax rates are applied to the year-to-date income or loss before income taxes by taxing jurisdiction to determine the income tax expense or benefit allocated to the interim period. The Company updates its estimated annual effective income tax rates on a quarterly basis considering the geographic mix of income or loss attributable to the tax jurisdictions in which the Company operates.they occur.
The Company’s income tax (expense) benefitexpense differs from the income tax (expense) benefitexpense computed by applying the U.S. federal statutory corporate income tax rate of 35% to income (loss) before income taxes as follows:
   Three Months Ended
September 30,
 Nine Months Ended
September 30,
  2017 2016 2017 2016
  (In thousands)
Income (loss) before income taxes 
$7,823
 
($101,487) 
$104,150
 
($674,695)
Income tax (expense) benefit at the statutory rate (2,738) 35,520
 (36,452) 236,143
State income tax (expense) benefit, net of U.S. federal income taxes (247) 575
 (1,974) 3,859
Tax shortfalls from stock-based compensation expense (273) 
 (3,029) 
(Increase) decrease in deferred tax assets valuation allowance 3,253
 (36,696) 41,570
 (240,897)
Other 5
 914
 (115) 895
Income tax benefit 
$—
 
$313
 
$—
 
$—
Deferred Tax Assets Valuation Allowance
Deferred tax assets are recorded21% for net operating lossesthe three and temporary differences between the book and tax basis of assets and liabilities expected to produce tax deductions in future periods. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those deferred tax assets would be deductible. The Company assesses the realizability of its deferred tax assets on a quarterly basis by considering whether it is more likely than not that all or a portion of the deferred tax assets will not be realized. The Company considers all available evidence (both positive and negative) when determining whether a valuation allowance is required. In making this assessment, the Company evaluated possible sources of taxable income that may be available to realize the deferred tax assets, including projected future taxable income, the reversal of existing temporary differences, taxable income in carryback years and available tax planning strategies.
A significant item of objective negative evidence considered was the cumulative historical three year pre-tax loss and a net deferred tax asset position atnine months ended September 30, 2017, driven primarily by the impairments of proved oil2018 and gas properties recognized beginning in the third quarter of 2015 and continuing through the third quarter of 2016, which limits the ability to consider other subjective evidence such as the Company’s potential35% for future growth. Beginning in the third quarter of 2015, and continuing through the third quarter of 2017, the Company concluded that it was more likely than not the deferred tax assets will not be realized. As a result, the net deferred tax assets at the end of each quarter, including September 30, 2017, were reduced to zero.
As a result of adopting ASU 2016-09, the Company recognized previously unrecognized windfall tax benefits which resulted in a cumulative-effect adjustment to retained earnings of approximately $15.7 million. This adjustment increased deferred tax assets,

which in turn increased the valuation allowance by the same amount as of the beginning of 2017, resulting in a net cumulative-effect adjustment to retained earnings of zero and brought the valuation allowance to $580.1 million as of January 1, 2017.
For the three and nine months ended September 30, 2017, primarilyto income before income taxes as follows:
   Three Months Ended September 30,  Nine Months Ended September 30,
  2018 2017 2018 2017
  (In thousands)
Income before income taxes 
$82,226
 
$7,823
 
$145,829
 
$104,150
Income tax expense at the U.S. federal statutory rate (17,267) (2,738) (30,624) (36,452)
State income tax expense, net of U.S. federal income tax benefit (881) (247) (1,687) (1,974)
Tax deficiencies related to stock-based compensation (10) (273) (2,552) (3,029)
Decrease in valuation allowance due to current period activity 17,400
 3,253
 33,849
 41,570
Other (122) 5
 (668) (115)
Income tax expense 
($880) 
$—
 
($1,682) 
$—
Tax Cuts and Jobs Act
On December 22, 2017, the U.S. Congress enacted the Tax Cuts and Jobs Act (the “Act”) which made significant changes to U.S. federal income tax law, including lowering the U.S. federal statutory corporate income tax rate to 21% from 35% beginning January 1, 2018. Due to the uncertainty regarding the application of ASC 740 in the period of enactment of the Act, the SEC issued Staff Accounting Bulletin 118 which allowed the Company to provide a resultprovisional estimate of current activity, partial releasesthe impacts of $3.3 millionthe Act in earnings for the year ended December 31, 2017 and $41.6 million, respectively,also provided a one-year measurement period in which the Company would record additional impacts from the valuation allowance was recordedenactment of the Act as they are identified. In August 2018, the Internal Revenue Service issued Notice 2018-68, Guidance on the Application of Section 162(m) (“Notice 2018-68”), which provides initial guidance on the application of Section 162(m), as amended. Notice 2018-68 provided guidance regarding the group of covered employees subject to bringSection 162(m)’s deduction limit under the net deferred tax assets to zero. AfterAct and the scope of transition relief available under the Act. The Company is currently evaluating the impact of the partial release the valuation allowanceNotice 2018-68, but as of September 30, 2018, has not made any changes to the provisional estimate recorded in earnings for the year ended December 31, 2017. While the Company has made a reasonable estimate of the effects on its existing deferred tax balances, it has not completed its accounting for the tax effects of the enactment of the Act and will continue to monitor provisions with discrete rate impacts and additional guidance provided within the one year measurement period.
Deferred Tax Asset Valuation Allowance
The deferred tax asset valuation allowance was $299.1 million and $333.0 million as of September 30, 2018 and December 31, 2017, was $538.5 million. Forrespectively. Decreases in the valuation allowance for the three months and nine months ended September 30, 2016,2018 and 2017 were based primarily on the pre-tax income recorded during those periods.
Throughout 2017 and the first nine months of 2018, the Company recorded additional valuation allowances of $36.7 million and $240.9 million, respectively, primarily asmaintained a result of the impairments of proved oil and gas properties during these periods.
The Company will continue to evaluate whether thefull valuation allowance is needed in future reporting periods. The valuation allowance will remain until the Company can conclude that the netagainst its deferred tax assets arebased on its conclusion, considering all available evidence (both positive and negative), that it was more likely than not to be realized. Future events or new evidence which may lead that

the Company to conclude that it is more likely than not its net deferred tax assets willwould not be realized include, but are not limitedrealized. The Company intends to cumulative historical pre-tax earnings, improvements in crude oil prices, and taxable events that could result from one or more transactions. The valuation allowance does not preclude the Company from utilizing the tax attributes if the Company recognizes taxable income. As long as the Company continues to conclude that themaintain a full valuation allowance against its net deferred tax assets until there is necessary,sufficient evidence to support the Company will have no significant deferred income tax expense or benefit.reversal of such valuation allowance.
6. Long-Term Debt
Long-term debt consisted of the following as of September 30, 20172018 and December 31, 2016:2017:
 September 30,
2017
 December 31,
2016
 September 30,
2018
 December 31,
2017
 (In thousands) (In thousands)
Senior Secured Revolving Credit Facility due 2022 
$215,600
 
$87,000
 
$309,837
 
$291,300
7.50% Senior Notes due 2020 600,000
 600,000
 130,000
 450,000
Unamortized premium for 7.50% Senior Notes 836
 1,020
 124
 579
Unamortized debt issuance costs for 7.50% Senior Notes (6,397) (7,573) (980) (4,492)
6.25% Senior Notes due 2023 650,000
 650,000
 650,000
 650,000
Unamortized debt issuance costs for 6.25% Senior Notes (8,527) (9,454) (7,219) (8,208)
8.25% Senior Notes due 2025 250,000
 
 250,000
 250,000
Unamortized debt issuance costs for 8.25% Senior Notes

 (4,498) 
 (4,073) (4,395)
Other long-term debt due 2028 4,425
 4,425
 
 4,425
Long-term debt 
$1,701,439
 
$1,325,418
 
$1,327,689
 
$1,629,209
Senior Secured Revolving Credit Facility
The Company has a senior secured revolving credit facility with a syndicate of banks that, as of September 30, 2017,2018, had a borrowing base of $837.5 million,$1.0 billion, with an elected commitment amount of $800.0$900.0 million, and $215.6 million of borrowings outstanding of $309.8 million at a weighted average interest rate of 3.45%3.87%. As of September 30, 2017, the Company had $0.4 million in letters of credit outstanding, which reduce the amounts available under the revolving credit facility. The credit agreement governing the revolving credit facility provides for interest-only payments until May 4, 2022 (subject to a springing maturity date of June 15, 2020 if the 7.50% Senior Notes due 2020 (the “7.50% Senior Notes”) have not been redeemed or refinanced on or prior to such time), when the credit agreement matures and any outstanding borrowings are due. See “Note 14. Subsequent Events” for details regarding the maturity date of the credit agreement upon redemption of the remaining $130.0 million outstanding aggregate principal amount of its 7.50% Senior Notes. The borrowing base under the credit agreement is subject to regular redeterminations in the spring and fall of each year, as well as special redeterminations described in the credit agreement, which in each case may reduce the amount of the borrowing base. The amount the Company is able to borrow with respect to the borrowing base is subject to compliance with the financial covenants and other provisions of the credit agreement. The capitalized terms which are not defined in this description of the revolving credit facility, shall have the meaning given to such terms in the credit agreement.
On January 31, 2018, as a result of the Eagle Ford divestiture, the Company’s borrowing base under the senior secured revolving credit facility was reduced from $900.0 million to $830.0 million, however, the elected commitment amount remained unchanged at $800.0 million. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for details of the Eagle Ford divestiture.
On May 4, 2017,2018, the Company entered into a ninth amendment to the credit agreement governing the revolving credit facility to, among other things (i) extend the maturity date of the revolving credit facility to May 4, 2022, subject to a springing maturity date of June 15, 2020 if the 7.50% Senior Notes have not been refinanced or redeemed on or prior to such time, (ii) increase the maximum credit amount under the revolving credit facility from $1.0 billion to $2.0 billion, (iii) increase the borrowing base from $600.0 million to $900.0 million, with an elected commitment amount of $800.0 million, until the next redetermination thereof, (iv) replace the Total Secured Debt to EBITDA ratio covenant with a Total Debt to EBITDA ratio covenant that requires such ratio not to exceed 4.00 to 1.00, (v) remove the covenant requiring a minimum EBITDA to Interest Expense ratio, (vi) reduce the commitment fee from 0.50% to 0.375% when utilization of lender commitments is less than 50% of the borrowing base amount, (vii) remove the restriction from borrowing under the credit facility if the Company has or, after giving effect to the borrowing, will have a Consolidated Cash Balance in excess of $50.0 million, (viii) remove the mandatory repayment of borrowings to the extent the Consolidated Cash Balance exceeds $50.0 million if either (a) the Company’s ratio of Total Debt to EBITDA exceeds 3.50 to 1.00 or (b) the availability under the credit facility is equal to or less than 20% of the then effective borrowing base, (ix) permit the

issuance of unlimited Senior Unsecured Debt, subject to certain conditions, including pro forma compliance with the Company’s financial covenants, and (x) increase certain covenant baskets and thresholds.
On June 28, 2017, the Company entered into a tenthtwelfth amendment to its credit agreement governing the revolving credit facility to, among other things, (i) amendestablish the calculationborrowing base at $1.0 billion, with an elected commitment amount of certain financial covenants$900.0 million, until the next redetermination thereof, (ii) reduce the applicable margins for Eurodollar loans from 2.00%-3.00% to provide that EBITDA will be calculated1.50%-2.50% and base rate loans from 1.00%-2.00% to 0.50%-1.50%, each depending on an annualized basis aslevel of the end of each of the first three fiscal quarters commencing with the quarter ending September 30, 2017, (ii) amend the restricted payments covenant to, among other things, provide for additional capacity to pay dividends with respect to, and make redemptions of, the Company’s equity interests, including the ability, subject to certain conditions, to pay dividends on or make redemptions of the Preferred Stock using proceeds of certain equity issuances or in an amount equal to the proceeds of certain divestitures,facility usage, (iii) amend the definitioncovenant limiting payment of “Disqualified Capital Stock”dividends and distributions on equity to provide, among other things, thatincrease the Preferred Stock does not constitute “Disqualified Capital Stock” for purposes of the revolving credit facility,Company’s ability to make dividends and distributions on its equity interests and (iv) provide that any of the Contingent ExL Payment does not constitute Debt (as defined in the revolving credit facility) for purposes of the revolving credit facility until such time as the amount of such obligation is determined, and (v) amend certain other covenants,provisions, in each case as set forth therein. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the ExL Acquisition.
Upon issuance of the 8.25% Senior Notes (described below), in accordance with the credit agreement governing the revolving credit facility, the Company’s borrowing base was reduced by 25% of the aggregate principal amount of the 8.25% Senior Notes, reducing the Company’s borrowing base from $900.0 million to $837.5 million.
On November 3, 2017,October 29, 2018, the Company entered into an elevenththe thirteenth amendment to its credit agreement governing the revolving credit facility. See “Note 14. Subsequent Events” for further details of the elevenththirteenth amendment.
The obligations of the Company under the credit agreement are guaranteed by the Company’s material domestic subsidiaries and are secured by liens on substantially all of the Company’s assets, including a mortgage lien on oil and gas properties having at least 90% of the total value of the oil and gas properties included in the Company’s reserve report used in its most recent redetermination.

Borrowings outstanding under the credit agreement bear interest at the Company’s option at either (i) a base rate for a base rate loan plus the margin set forth in the table below, where the base rate is defined as the greatest of the prime rate, the federal funds rate plus 0.50% and the adjusted LIBO rate plus 1.00%, or (ii) an adjusted LIBO rate for a Eurodollar loan plus the margin set forth in the table below. The Company also incurs commitment fees at rates as set forth in the table below on the unused portion of lender commitments, which are included in interest“Interest expense, netnet” in the consolidated statements of operations.income.
Ratio of Outstanding Borrowings and Letters of Credit to Lender Commitments 
Applicable Margin for
Base Rate Loans
 
Applicable Margin for
Eurodollar Loans
 Commitment Fee
Ratio of Outstanding Borrowings to Lender Commitments 
Applicable Margin for
Base Rate Loans
 
Applicable Margin for
Eurodollar Loans
 Commitment Fee
Less than 25% 1.00% 2.00% 0.375% 0.50% 1.50% 0.375%
Greater than or equal to 25% but less than 50% 1.25% 2.25% 0.375% 0.75% 1.75% 0.375%
Greater than or equal to 50% but less than 75% 1.50% 2.50% 0.500% 1.00% 2.00% 0.500%
Greater than or equal to 75% but less than 90% 1.75% 2.75% 0.500% 1.25% 2.25% 0.500%
Greater than or equal to 90% 2.00% 3.00% 0.500% 1.50% 2.50% 0.500%
The Company is subject to certain covenants under the terms of the credit agreement, which include the maintenance of the following financial covenants determined as of the last day of each quarter: (1) a ratio of Total Debt to EBITDA of not more than 4.00 to 1.00 and (2) a Current Ratio of not less than 1.00 to 1.00. As defined in the credit agreement, Total Debt excludes debt discounts, premiums and debt issuance costs and is net of cash and cash equivalents, EBITDA is calculated on an annualized basis as of the end of each of the first three fiscal quarters commencing with the fiscal quarter ending September 30, 2017, and thereafter will be calculated based on the last four fiscal quarter periods, in each casequarters after giving pro forma effect to EBITDA for material acquisitions and dispositionsdivestitures of oil and gas properties, and the Current Ratio includes an add back of the unused portion of lender commitments. As of September 30, 2017,2018, the ratio of Total Debt to EBITDA was 3.091.95 to 1.00 and the Current Ratio was 2.201.84 to 1.00. Because the financial covenants are determined as of the last day of each quarter, the ratios can fluctuate significantly period to period as the level of borrowings outstanding under the credit agreement are impacted by the timing of cash flows from operations, capital expenditures, acquisitions and divestitures of oil and gas properties and securities offerings.
The credit agreement also places restrictions on the Company and certain of its subsidiaries with respect to additional indebtedness, liens, dividends and other payments to shareholders, repurchases or redemptions of the Company’s common stock, redemptions of senior notes, investments, acquisitions and divestitures of oil and gas properties, mergers, transactions with affiliates, hedging transactions and other matters.
The credit agreement is subject to customary events of default, including in connection with a change in control. If an event of default occurs and is continuing, the lenders may elect to accelerate amounts due under the credit agreement (except in the case of a bankruptcy event of default, in which case such amounts will automatically become due and payable).

Redemptions of 7.50% Senior Notes
8.25%During the first quarter of 2018, the Company redeemed $320.0 million of the outstanding aggregate principal amount of its 7.50% Senior Notes at a price equal to 101.875% of par. Upon the redemptions, the Company paid $336.9 million, which included redemption premiums of $6.0 million and accrued and unpaid interest of $10.9 million. The redemptions were funded primarily from the net proceeds received from the divestitures in Eagle Ford and Niobrara in the first quarter of 2018. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of these divestitures. As a result of the redemptions, the Company recorded a loss on extinguishment of debt of $8.7 million, which included the redemption premiums of $6.0 million and the write-off of associated unamortized premiums and debt issuance costs of $2.7 million.
See “Note 14. Subsequent Events” for details of the notice of conditional redemption for the remaining $130.0 million outstanding aggregate principal amount of its 7.50% Senior Notes.
Redemption of Other Long-Term Debt
On May 3, 2018, the Company redeemed the remaining $4.4 million outstanding aggregate principal amount of its 4.375% Convertible Senior Notes due 20252028 at a price equal to 100% of par. Upon the redemption, the Company paid $4.5 million, which included accrued and unpaid interest of $0.1 million.
Issuance of 8.25% Senior Notes
On July 14, 2017, the Company closed a public offering of $250.0 million aggregate principal amount of 8.25% Senior Notes due 2025 (the “8.25% Senior Notes”). The 8.25% Senior Notes mature on July 15, 2025 and have interest payable semi-annually each January 15 and July 15. Before July 15, 2020, the Company may, at its option, redeem all or a portion of the 8.25% Senior Notes at 100% of the principal amount plus accrued and unpaid interest and a make-whole premium. Thereafter, the Company may redeem all or a portion of the 8.25% Senior Notes at redemption prices decreasing annually from 106.188% to 100% of the principal amount redeemed plus accrued and unpaid interest. The Company used the net proceeds of $245.4 million, net of underwriting discounts and commissions and offering costs, to fund a portion of the purchase price for the ExL Acquisition and for general corporate purposes. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the ExL Acquisition.
If a Change of Control (as defined in the indentures governing the 8.25% Senior Notes) occurs, the Company may be required by holders to repurchase the 8.25% Senior Notes for cash at a price equal to 101% of the principal amount purchased, plus any accrued and unpaid interest.
The indentures governing the 8.25% Senior Notes contain covenants that, among other things, limit the Company’s ability and the ability of its restricted subsidiaries to: pay distributions on, purchase or redeem the Company’s common stock or other capital stock or redeem the Company’s subordinated debt; make investments; incur or guarantee additional indebtedness or issue certain types of equity securities; create certain liens; sell assets; consolidate, merge or transfer all or substantially all of the Company’s assets; enter into agreements that restrict distributions or other payments from the Company’s restricted subsidiaries to the Company; engage in transactions with affiliates; and create unrestricted subsidiaries. Such indentures governing the Company’s senior notes are also subject to customary events of default, including those related to failure to comply with the terms of the notes and the indenture, certain failures to file reports with the SEC, certain cross defaults of other indebtedness and mortgages and certain failures to pay final judgments. At September 30, 2017, the 8.25% Senior Notes are guaranteed by the same subsidiaries that also guarantee the revolving credit facility.

7. Commitments and Contingencies
From time to time, the Company is party to certain legal actions and claims arising in the ordinary course of business. While the outcome of these events cannot be predicted with certainty, management does not currently expect these matters to have a materially adverse effect on the financial position or results of operations of the Company.
The results of operations and financial position of the Company continue to be affected from time to time in varying degrees by domestic and foreign political developments as well as legislation and regulations pertaining to restrictions on oil and gas production, imports and exports, natural gas regulation, tax increases,changes, environmental regulations and cancellation of contract rights. Both the likelihood and overall effect of such occurrences on the Company vary greatly and are not predictable.
8. Preferred Stock and Common Stock Warrants
On June 28,August 10, 2017, the Company entered into a Preferred Stock Purchase Agreement with certain funds managed or sub-advised by GSO Capital Partners LPclosed on the issuance and its affiliates (the “GSO Funds”) to issue and sellsale in a private placement of (i) $250.0 million initial liquidation preference (250,000 shares) of 8.875% redeemable preferred stock, par value $0.01 per share (the “Preferred Stock”) and (ii) warrants for 2,750,000 shares of the Company’s common stock, with a term of ten years and an exercise price of $16.08 per share, exercisable only on a net share settlement basis (the “Warrants”), for a cash purchase price equal to $970.00 per share of Preferred Stock. The Company paid theStock, to certain funds managed or sub-advised by GSO Funds $5.0 million as a commitment fee upon signing the Preferred Stock Purchase Agreement.Capital Partners LP and its affiliates (the “GSO Funds”). The closing of the private placement occurred on August 10, 2017, contemporaneously with the closing of the ExL Acquisition. The Company used the net proceeds of approximately $236.4 million, net of issuance costs, to fund a portion of the purchase price for the ExL Acquisition and for general corporate purposes. The Company also entered into a registration rights agreement with the GSO Funds at the closing of the private placement, which provided certain registration and other rights for the benefit of the GSO Funds. During the fourth quarter of 2017, the Company filed a registration statement with the SEC to register the Preferred Stock. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the ExL Acquisition.
The Preferred Stock has a liquidation preference of $1,000.00 per share and bears an annual cumulative dividend rate of 8.875%, payable on March 15, June 15, September 15 and December 15 of any given year. The Company may elect to pay all or a portion of the Preferred Stock dividends in shares of its common stock in decreasing percentages as follows with respect to any preferred stock dividend declared by the Company’s Board of Directors and paid in respect of a quarter ending:
Period  Percentage
On or after December 15, 2017 and on or prior to September 15, 2018100%
On or after December 15, 2018 and on or prior to September 15, 2019  75%
On or after December 15, 2019 and on or prior to September 15, 2020  50%

If the Company fails to satisfy the Preferred Stock dividend on the applicable dividend payment date, then the unpaid dividend will be added to the liquidation preference until paid.
The Preferred Stock outstanding is not mandatorily redeemable, but can be redeemed at the Company’s option and, in certain circumstances, at the option of the holders of the Preferred Stock. On or prior to August 10, 2018, the Company mayhad the right to redeem up to 50,000 shares of Preferred Stock, in cash, at $1,000.00 per share, plus accrued and unpaid dividends in an amount not to exceed the sum of the cash proceeds of divestitures of oil and gas properties and related assets, the sale or issuance of the Company’s common stock and the sale of any of the Company’s wholly owned subsidiaries.
In addition, at any time on or prior to August 10, 2020, the Company may redeem all or part of the Preferred Stock in cash at a redemption premium of 104.4375%, plus accrued and unpaid dividends and the present value on the redemption date of all quarterly dividends that would be payable from the redemption date through August 10, 2020. After August 10, 2020, the Company may redeem all or part of the Preferred Stock in cash at redemption premiums, as presented in the table below, plus accrued but unpaid dividends.
Period Percentage
After August 10, 2020 but on or prior to August 10, 2021 104.4375%
After August 10, 2021 but on or prior to August 10, 2022 102.21875%
After August 10, 2022 100%
The holders of the Preferred Stock have the option to cause the Company to redeem the Preferred Stock under the following conditions:
Upon the Company’s failure to pay a quarterly dividend within three months of the applicable payment date;
On or after August 10, 2024, if the Preferred Shares remain outstanding; or
Upon the occurrence of certain changes of controlcontrol.
For the first two conditions described above, the Company has the option to settle any such redemption in cash or shares of its common stock and the holders of the Preferred Stock may elect to revoke or reduce the redemption if the Company elects to settle in shares of common stock.

The Preferred Stock are non-voting shares except as required by the Company’s articles of incorporation or bylaws. However, so long as the GSO Funds beneficially own more than 50% of the Preferred Stock, the consent of the holders of the Preferred Stock will be required prior to issuing stock senior to or on parity with the Preferred Stock, incurring indebtedness subject to a leverage ratio, agreeing to certain restrictions on dividends on, or redemption of, the Preferred Stock and declaring or paying dividends on the Company’s common stock in excess of $15.0 million per year subject to a leverage ratio. Additionally, if the Company does not redeem the Preferred Stock before August 10, 2024, in connection with a change of control, or failure to pay a quarterly dividend within three months of the applicable payment date, the holders of the Preferred Stock are entitled to additional rights including:
Increasing the dividend rate to 12.0% per annum until August 10, 2024 and thereafter to the greater of 12.0% per annum and the one-month LIBOR plus 10.0%;
Electing up to two directors to the Company’s Board of Directors; and
Requiring approval by the holders of the Preferred Stock to incur indebtedness subject to a leverage ratio, declaring or paying dividends on the Company’s common stock in excess of $15.0 million per year or issuing equity of the Company’s subsidiaries to third parties.
The Preferred Stock does not qualify as a liability instrument under ASC 480 - Distinguishing Liabilities from Equity, as the Preferred Stock is not mandatorily redeemable. As the Preferred Stock does not qualify as a liability instrument, the Company next evaluated whether the Preferred Stock should be presented in shareholders' equity or temporary equity, between liabilities and shareholders' equity on its consolidated balance sheets. As the number of common shares that could be required to be delivered upon the holders’ optional redemption is indeterminate, the Company cannot assert that it will be able to settle in shares of its common stock. As such, the Preferred Stock must be presented as temporary equity. The Company will reassess presentation of the Preferred Stock on its consolidated balance sheets on a quarterly basis.
The Warrants became exercisable upon issuance and qualify as freestanding financial instruments, but meet the scope exception in ASC 815 - Derivatives and Hedging as they are indexed to the Company’s common stock. The Warrants meet the applicable criteria for equity classification and are reflected in additional paid in capital in the consolidated balance sheets.
Net proceeds were allocated between the Preferred Stock and the Warrants based on their relative fair values atsheets with the issuance date with $213.4 million allocatedfair value accreted to the initial liquidation preference using the effective interest method.
The table below presents the reconciliation of changes in the carrying amount of Preferred Stock and $23.0 million allocated tofor the Warrants. The fair value of the Preferred Stock was calculated by a third-party valuation specialist using a discounted cash flow model. Significant inputs into the calculation of the Preferred Stock included the per share cash purchase price, redemption premiums, and liquidation preference, all as discussed

above, as well as redemption assumptions provided by the Company. The fair value of the Warrants was calculated using a Black-Scholes-Merton option pricing model, incorporating the following assumptions at the issuance date:nine months ended September 30, 2018:
  Issuance Date Fair Value AssumptionsCarrying Amount of Preferred Stock
Exercise price $16.08(In thousands)
Expected term (in years)December 31, 2017 10.0
$214,262
Expected volatilityRedemption of Preferred Stock 62.9(42,897%)
Risk-free interest rateAccretion on Preferred Stock 2.22,264%
Dividend yieldSeptember 30, 2018 
%$173,629
See “Note 11. Fair Value Measurements” for further discussionLoss on Redemption of Preferred Stock
During the first quarter of 2018, the Company redeemed 50,000 shares of Preferred Stock, representing 20% of the significant inputs used in theissued and outstanding Preferred Stock, for $50.5 million, consisting of the $50.0 million redemption price and Warrants fair value calculations.
Preferred Stock Dividends$0.5 million accrued and Accretion
Inunpaid dividends. The Company recognized a $7.1 million loss on the third quarter of 2017, the Company declared and paid $2.2 million of dividends, in cash,redemption due to the holdersexcess of recordthe $50.0 million redemption price over the $42.9 million redemption date carrying value of the Preferred Stock on September 1, 2017 for the period from issuance through September 15, 2017.
The Preferred Stock will be subject to accretion from its relative fair value at the issuance date of $213.4 million to a redemption value of $250.0 million over an approximate seven year term using the effective interest method.
Both the dividends and the accretion are presented on the statements of operations as reductions to net income, or increases to net loss, to compute net income (loss) attributable to common shareholders.Stock.
9. Shareholders’ Equity and Stock-Based Compensation
Increase in AuthorizedSales of Common SharesStock
AtOn August 17, 2018, the Company’s annual meetingCompany completed a public offering of shareholders on May 16, 2017, shareholders approved the proposal to amend the Company’s Amended and Restated Articles of Incorporation to increase the number of authorized9.5 million shares of its common stock from 90,000,000at a price per share of $22.55. The Company used the proceeds of $213.9 million, net of offering costs, to 180,000,000.
Salefund the Devon Acquisition and for general corporate purposes. Pending the closing of Common Stockthe Devon Acquisition, the Company used the net proceeds to temporarily repay a portion of the borrowings outstanding under the revolving credit facility. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the Devon Acquisition.
On July 3, 2017, the Company completed a public offering of 15.6 million shares of its common stock at a price per share of $14.28. The Company used the net proceeds of $222.4 million, net of offering costs, to fund a portion of the purchase price of the ExL Acquisition and for general corporate purposes. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the ExL Acquisition.
Stock-Based Compensation
At the Company’s annual meeting of shareholders on May 16, 2017, shareholders approvedThe Company grants equity-based incentive awards under the 2017 Incentive Plan of Carrizo Oil & Gas, Inc. (the “2017 Incentive Plan”), which and the Carrizo Oil & Gas, Inc. Cash-Settled Stock Appreciation Rights Plan (“Cash SAR Plan”). The 2017 Incentive Plan replaced the Incentive Plan of Carrizo Oil & Gas, Inc., as amended and restated effective May 15, 2014 (the “Prior Incentive Plan”). From and, from the effective date of the 2017 Incentive Plan, no further awards may be granted under the Prior Incentive Plan, however,Plan. However, awards previously granted under the Prior Incentive Plan will remain outstanding in accordance with their terms. Under the 2017 Incentive Plan, the Company may grant restricted stock awards and units, stock appreciation rights that can be settled in cash or shares of common stock, performance shares, and stock options to employees, independent contractors, and non-employee directors. Under the Cash SAR Plan, the Company may grant stock appreciation rights that may only be settled in cash to employees and independent contractors.

The 2017 Incentive Plan provides that up to 2,675,000 shares of the Company’s common stock, plus the shares remaining available for awards under the Prior Incentive Plan at the effective date of the 2017 Incentive Plan, may be issued. 
granted (the “Maximum Share Limit”). Each restricted stock award and unit and performance share granted under the 2017 Incentive Plan counts as 1.35 shares against the Maximum Share Limit. Each stock option and stock appreciation right to be settled in shares of common stock granted under the 2017 Incentive Plan counts as 1.00 share against the Maximum Share Limit. Stock appreciation rights to be settled in cash granted under the 2017 Incentive Plan and stock appreciation rights granted under the Cash SAR Plan (collectively, “Cash SARs”) do not count against the Maximum Share Limit. Restricted stock awards and units, performance shares, and Cash SARs activity during the nine months ended September 30, 2018 is presented below. The Company has not granted stock appreciation rights to be settled in shares of common stock and has no outstanding stock options. As of September 30, 2017,2018, there were 1,750,275296,654 shares of common shares remainingstock available for grant under the 2017 Incentive Plan. The issuance of a restricted stock award, restricted stock unit, or performance share counts as 1.35 shares while the issuance of a stock option or stock-settled stock appreciation right counts as 1.00 share against the number of common shares available for grant under the 2017 Incentive Plan. As of September 30, 2017, the Company does not have any outstanding stock options and all outstanding stock appreciation rights will be settled solely in cash.
Restricted Stock Awards and Units. UnitsRestricted stock awards can be granted to employees and independent contractors and restricted stock units can be granted to employees, independent contractors, and non-employee directors. As of September 30, 2017, unrecognized compensation costs related to unvested restricted stock awards and units was $26.3 million and will be recognized over a weighted average period of 2.1 years.

The table below summarizes restricted stock award and unit activity for the nine months ended September 30, 2017:2018:
  Restricted Stock Awards and Units 
Weighted Average Grant Date
Fair Value
For the Nine Months Ended September 30, 2017    
Unvested restricted stock awards and units, beginning of period 1,111,710
 
$36.93
Granted 1,020,465
 
$25.63
Vested (629,397) 
$39.58
Forfeited (12,922) 
$29.11
Unvested restricted stock awards and units, end of period 1,489,856
 
$28.14
During the first quarter of 2017, the Company granted 695,658 restricted stock units to employees and independent contractors with a grant date fair value of $18.8 million as part of its annual grant of long-term equity incentive awards. All of these restricted stock units contain a service condition, and certain of these restricted stock units also contain a performance condition. The performance condition has been met. In addition, the Company granted 44,465 restricted stock units to certain employees and independent contractors with a grant date fair value of $1.2 million in lieu of a portion of their annual incentive bonus otherwise payable to them in cash under the Company’s performance-based annual incentive bonus program.These restricted stock units vested substantially concurrent with the time of grant.
  Restricted Stock Awards and Units 
Weighted Average Grant Date
Fair Value
Unvested restricted stock awards and units, beginning of period 1,482,655
 
$28.07
Granted 1,391,422
 
$15.07
Vested (615,762) 
$31.44
Forfeited (23,880) 
$18.51
Unvested restricted stock awards and units, end of period 2,234,435
 
$19.14
During the second quarter of 2017, the Company granted 206,548 restricted stock awards and units to employees and non-employee directors with a grant date fair value of $5.0 million, all of which contain a service condition.
Stock Appreciation Rights (“SARs”). SARs can be granted to employees and independent contractors under the Carrizo Oil & Gas, Inc. Cash-Settled Stock Appreciation Rights Plan (“Cash SAR Plan”) or the 2017 Incentive Plan. SARs granted under the 2017 Incentive Plan can be settled in shares of common stock or cash, at the option of the Company, while SARs granted under the Cash SAR Plan may only be settled in cash. All outstanding SARs will be settled solely in cash. The grant date fair value of SARs is calculated using the Black-Scholes-Merton option pricing model. The liability for SARs as of September 30, 2017 was $2.3 million, all of which was classified as “Other liabilities” in the consolidated balance sheets. As of December 31, 2016, the liability for SARs was $11.5 million, of which $10.0 million was classified as “Other current liabilities,” with the remaining $1.5 million classified as “Other liabilities” in the consolidated balance sheets. Unrecognized compensation costs related to unvested SARs was $1.3 million as of September 30, 2017, and will be recognized over a weighted average period of 1.3 years.
The table below summarizes the activity for SARs for the nine months ended September 30, 2017:
  Stock Appreciation Rights 
Weighted
Average
Exercise
Prices
 
Weighted Average Remaining Life
(In years)
 
Aggregate Intrinsic Value
(In millions)
 
Aggregate Intrinsic Value of Exercises
(In millions)
For the Nine Months Ended September 30, 2017          
Outstanding, beginning of period 722,638
 
$23.69
      
Granted 342,440
 
$26.94
      
Exercised (219,279) 
$17.28
     
$2.1
Forfeited 
 
$—
      
Expired (131,561) 
$24.19
      
Outstanding, end of period 714,238
 
$27.12
 4.0 
$—
  
Vested, end of period 185,899
 
$27.30
      
Vested and exercisable, end of period 
 
$27.30
 3.5 
$—
  
During the first quarter of 2017,2018, the Company granted 342,440 SARs under the Cash SAR Plan with a grant date fair value1,391,422 restricted stock awards and units primarily consisting of $12.00 per SAR, or $4.1 million,1,343,412 restricted stock units to certain employees and independent contractors as part of its annual grant of long-term equity incentive awards during the first quarter of 2018. These restricted stock units had a grant date fair value of $19.7 million and vest ratably over an approximate three-year period. During the third quarter of 2018, the Company granted 33,536 restricted stock units to its non-employee directors, which had a grant date fair value of $0.9 million and will vest on the earlier of the date of the 2019 Annual Meeting of Shareholders and June 30, 2019.
As of September 30, 2018, unrecognized compensation costs related to unvested restricted stock awards and units were $26.8 million and will be recognized over a weighted average period of 2.0 years.
Cash SARs
The table below summarizes the Cash SAR activity for the nine months ended September 30, 2018:
  Cash SARs 
Weighted
Average
Exercise
Prices
 
Weighted Average Remaining Life
(In years)
 
Aggregate Intrinsic Value
(In millions)
 
Aggregate Intrinsic Value of Exercises
(In millions)
Outstanding, beginning of period 714,238
 
$27.12
 
    
Granted 616,686
 
$14.67
 
    
Exercised 
 
$—
     
$—
Forfeited 
 
$—
      
Expired 
 
$—
      
Outstanding, end of period 1,330,924
 
$21.35
 4.6 
$6.5
  
Vested, end of period 543,018
 
$27.18
      
Vested and exercisable, end of period 
 
$27.18
 2.8 
$—
  
During the nine months ended September 30, 2018, the Company granted 616,686 Cash SARs to certain employees and independent contractors, all of which occurred in the first quarter of 2018 as part of the Company’s annual grant of long-term equity incentive awards. All of theseThese Cash SARs contain a service conditionvest ratably over an approximate three-year period and performance condition. The performance condition has been met.expire approximately seven years from the grant date.

The grant date fair value of the Cash SARs, calculated using the Black-Scholes-Merton option pricing model, was $4.9 million. The following table summarizes the assumptions used to calculate the grant date fair value of the Cash SARs granted during the nine months ended September 30, 2017:2018:
  Grant Date Fair Value Assumptions
Expected term (in years) 4.246.0
Expected volatility 54.3%
Risk-free interest rate 1.82.8%
Dividend yield %
The liability for Cash SARs as of September 30, 2018 was $7.9 million, all of which was classified as “Other current liabilities,” in the consolidated balance sheets. As of December 31, 2017, the liability for Cash SARs was $4.4 million, all of which was classified as “Other liabilities” in the consolidated balance sheets. Unrecognized compensation costs related to unvested Cash SARs were $8.7 million as of September 30, 2018, and will be recognized over a weighted average period of 2.4 years.
Performance Shares.Shares
The table below summarizes performance share activity for the nine months ended September 30, 2018:
  
Target Performance Shares (1)
 
Weighted Average Grant Date
Fair Value
Unvested performance shares, beginning of period 144,955
 
$47.14
Granted 93,771
 
$19.09
Vested at end of performance period (49,458) 
$65.51
Did not vest at end of performance period (7,059) 
$65.51
Forfeited 
 
$—
Unvested performance shares, end of period 182,209
 
$27.01
(1)
The number of performance shares that vest may vary from the number of target performance shares granted depending on the Companys final TSR ranking for the approximate three-year performance period.
During the nine months ended September 30, 2018, the Company can grantgranted 93,771 target performance shares to certain employees and independent contractors, where eachall of which occurred in the first quarter of 2018 as part of the Company’s annual grant of long-term equity incentive awards. Each performance share represents the right to receive one share of common stock. Thestock, however, the number of performance shares that will vest is based on ranges from zero to 200% of the target performance shares granted based on the total shareholder return (“TSR”) of the Company’s common stock relative to the TSR achieved by a specified industry peer group over an approximate three yearthree-year performance period, the last day of which is also the vesting date.
During the first quarter of 2018, as a result of the Company’s final TSR ranking during the performance period, a multiplier of 88% was applied to the 56,517 target performance shares that were granted in 2015, resulting in the vesting of 49,458 shares and 7,059 shares that did not vest.
The grant date fair value of the performance awards isshares, calculated using a Monte Carlo simulation. As of September 30, 2017, unrecognized compensation costs related to unvested performance sharessimulation, was $2.7 million and will be recognized over a weighted average period of 1.8 years.
The table below summarizes performance share activity for the nine months ended September 30, 2017:
  
Target Performance Shares (1)
 
Weighted Average Grant Date
Fair Value
For the Nine Months Ended September 30, 2017    
Unvested performance shares, beginning of period 154,510
 
$58.44
Granted 46,787
 
$35.14
Vested (56,342) 
$68.15
Forfeited 
 
$—
Unvested performance shares, end of period 144,955
 
$47.14
(1)
The number of shares of common stock issued upon vesting may vary from the number of target performance shares depending on the Companys final TSR ranking for the approximate three year performance period.
During the first quarter of 2017, the Company granted 46,787 target performance shares to certain employees and independent contractors with a grant date fair value of $35.14 per performance share, or $1.6 million, as part of its annual grant of long-term equity incentive awards. In addition to the market condition described above, the performance shares also contain a service condition and performance condition. The performance condition has been met. In addition, the Company issued 92,200 shares of common stock for 56,342 target performance shares that vested during the first quarter of 2017 with a multiplier of 164% based on the Company’s final TSR ranking during the performance period.
$1.8 million. The following table summarizes the assumptions used to calculate the grant date fair value of the performance shares granted during the nine months ended September 30, 2017:2018:
  Grant Date Fair Value Assumptions
Number of simulations 500,000
Expected term (in years) 2.983.0
Expected volatility 59.261.5%
Risk-free interest rate 1.52.4%
Dividend yield %

As of September 30, 2018, unrecognized compensation costs related to unvested performance shares were $2.5 million and will be recognized over a weighted average period of 2.0 years.
Stock-Based Compensation Expense, Net.Net
Stock-based compensation expense associated with restricted stock awards and units, stock appreciation rights to be settled in cashCash SARs and performance shares, net of amounts capitalized, is reflected as generalincluded in “General and administrative, expensenet” in the consolidated statements of operations, net of amounts capitalized to oil and gas properties.income.

The Company recognized the following stock-based compensation expense, net for the periods indicated:three and nine months ended September 30, 2018 and 2017:
  Three Months Ended
September 30,
 Nine Months Ended
September 30,
  Three Months Ended September 30,  Nine Months Ended September 30,
 2017 2016 2017 2016 2018 2017 2018 2017
 (In thousands) (In thousands)
Restricted stock awards and units 
$5,311
 
$5,487
 
$16,184
 
$23,079
 
$4,487
 
$5,311
 
$14,291
 
$16,184
Stock appreciation rights 429
 3,361
 (7,040) 9,581
Cash SARs (868) 429
 3,505
 (7,040)
Performance shares 581
 722
 1,861
 2,052
 411
 581
 1,374
 1,861
 6,321
 9,570
 11,005
 34,712
 4,030
 6,321
 19,170
 11,005
Less: amounts capitalized to oil and gas properties (1,455) (1,150) (2,543) (3,878) (968) (1,455) (5,384) (2,543)
Total stock-based compensation expense, net 
$4,866
 
$8,420
 
$8,462
 
$30,834
 
$3,062
 
$4,866
 
$13,786
 
$8,462
10. Derivative Instruments
Commodity Derivative Instruments
The Company uses commodity derivative instruments to reduce its exposure tomitigate the effects of commodity price volatility for a portion of its forecasted crude oil and natural gassales of production and thereby achieve a more predictable level of cash flows to supportflow. Since the Company derives a significant portion of its revenues from sales of crude oil, crude oil price volatility represents the Company’s drilling and completion capital expenditure program.most significant commodity price risk. While the use of commodity derivative instruments limits or partially reduces the downside risk of adverse commodity price movements, such use also limits the upside from favorable commodity price movements. The Company does not enter into commodity derivative instruments for speculative or trading purposes.
The Company’s commodity derivative instruments, which settle on a monthly basis over the term of the contract for contracted volumes, consist of fixedover-the-counter price swaps, basis swaps, three-way collars, and purchased and sold call options and basis swaps, each of which areis described below.
Fixed Price Swaps: swapsThe Company receives are settled based on differences between a fixed price and the settlement price of a referenced index. If the settlement price of the referenced index is below the fixed price, the Company receives the difference from the counterparty. If the referenced settlement price is above the fixed price, the Company pays a variable market pricethe difference to the counterparties over specified periods for contracted volumes.counterparty.
Basis Swaps: Three-way collarsThe Company receives a variable NYMEX settlement price, plus or minus a fixed differential price, and pays a variable Argus published index price to the counterparties over specified periods for contracted volumes.
Three-Way Collars: A three-way collar is a combination consist of options including a purchased put option (fixed floor(floor price), a sold call option (fixed ceiling(ceiling price) and a sold put option (fixed sub-floor(sub-floor price). These contracts offer a higher fixed ceiling price relative to a costless collar, but limit the Company’s protection from decreases in commodity prices below the fixed floor price. At settlement, if the market price is and are settled based on differences between the fixedfloor or ceiling prices and the settlement price of a referenced index or the difference between the floor price and the fixed sub-floor price or is above the fixed ceiling price, the Company receives the fixed floor price or pays the market price, respectively.price. If the marketsettlement price of the referenced index is below the fixed sub-floor price, the Company receives the marketdifference between the floor price plusand sub-floor price from the counterparty. If the settlement price of the referenced index is between the floor price and sub-floor price, the Company receives the difference between the fixed floor price and the fixed sub-floor price.settlement price of the referenced index from the counterparty. If the marketsettlement price of the referenced index is between the fixed floor price and fixed ceiling price, no payments are due to or from either party. If the settlement price of the referenced index is above the ceiling price, the Company pays the difference to the counterparty.
Sold call options are settled based on differences between the ceiling price and the settlement price of a referenced index. If the settlement price of the referenced index is above the ceiling price, the Company pays the difference to the counterparty. If the settlement price of the referenced index is below the ceiling price, no payments are due to or from either party. Premiums from the sale of call options have been used to enhance the fixed price of certain contemporaneously executed price swaps. Purchased call options executed contemporaneously with sold call options in order to increase the ceiling price of existing sold call options have been presented on a net basis in the table below.
Basis swaps are settled based on differences between a fixed price differential and the differential between the settlement prices of two referenced indexes. If the differential between the settlement prices of the two referenced indexes is greater than the fixed price differential, the Company receives the difference from the counterparty. If the differential between the settlement prices of the two referenced indexes is less than the fixed price differential, the Company pays the difference to the counterparty.
The referenced index of the Company’s price swaps, three-way collars and sold call options is U.S. New York Mercantile Exchange (“NYMEX”) West Texas Intermediate (“WTI”) for crude oil, NYMEX Henry Hub for natural gas and OPIS Mont Belvieu Non-TET (“OPIS”) for NGL products, as applicable. The prices received by the Company for the sale of its production generally vary from these referenced index prices due to adjustments for delivery location (basis) and other factors. The referenced indexes of the Company’s basis swaps, which are used to mitigate location price risk for a portion of its production, are Argus WTI Cushing (“WTI Cushing”) and the applicable index price of the Company’s crude oil sales contracts is Argus WTI Midland (“WTI Midland”) for its Delaware Basin crude oil production and Argus Light Louisiana Sweet (“LLS”) for its Eagle Ford crude oil production.

The Company has incurred premiums on certain of these contractsits commodity derivative instruments in order to obtain a higher floor price and/or ceiling price.
Sold Call Options: These contracts give the counterparties the right, but not the obligation, to buy contracted volumes from the Company over specified periods and prices in the future. At settlement, if the market price exceeds the fixed price, of the call option, the Company pays the counterparty the excess. If the market price settles below the fixed price of the call option, no payment is due from either party. These contracts require the counterparties to pay premiums to the Company that represent the fair value of the call option as of the date of purchase.
Purchased Call Options: These contracts give the Company the right, but not the obligation, to buy contracted volumes from the counterparties over specified periods and prices in the future. At settlement, if the market price exceeds the fixed price of the call option, the counterparties pay the Company the excess. If the market price settles below the fixed price of the call option, no payment is due from either party. These contracts require the Company to pay premiums to the counterparties that represent the fair value of the call option as of the date of purchase.
All of the Company’s purchased call options were executed contemporaneously with sales of call options to increase the fixed price on a portion of the existing sold call options and therefore are presented on a net basis in the “Net Sold Call Options” table below.
Premiums: In order to increase the fixed price on a portion of the Company's existing sold call options, as mentioned above, the Company incurred premiums on its purchased call options. Additionally, the Company has incurred premiums on certain of its three-way collars in order to obtain a higher floor price and/or higher ceiling price. The paymentPayment of these premiums associated with the Company’s purchased call options and certain of the three-way collars are deferred until the applicable contracts settle on a monthly basis over the term of the contract or, in some cases, during the final 12 months of the contract and are referred to as deferred premium obligations.

basis. WhenAs of September 30, 2018, the Company has entered into three-way collars which span multiple years,had the Company has elected to defer payment of certain of the premiums until the final year's contracts settle on a monthly basis.
The following tables set forth a summary of the Company’s outstanding commodity derivative positionsinstruments at weighted average contract prices as of September 30, 2017:
Crude Oil Fixed Price Swapsvolumes and prices:
Period Volumes (in Bbls/d) NYMEX Price ($/Bbl)
Q4 2017 15,000
 
$53.44
FY 2018 6,000
 
$49.55
Crude Oil Basis Swaps
Commodity Period Type of Contract Index 
Volumes
(Bbls
per day)
 
Fixed Price
($ per
Bbl)
 
Sub-Floor Price
($ per
Bbl)
 
Floor Price
($ per
Bbl)
 
Ceiling Price
($ per
Bbl)
 
Fixed
Price
Differential
($ per
Bbl)
Crude oil 4Q18 Price Swaps NYMEX WTI 6,000
 
$49.55
 
 
 
 
Crude oil 4Q18 Three-Way Collars NYMEX WTI 24,000
 
 
$39.38
 
$49.06
 
$60.14
 
Crude oil 4Q18 Basis Swaps LLS-WTI Cushing 18,000
 
 
 
 
 
$5.11
Crude oil 4Q18 Basis Swaps WTI Midland-WTI Cushing 6,000
 
 
 
 
 
($0.10)
Crude oil 4Q18 Sold Call Options NYMEX WTI 3,388
 
 
 
 
$71.33
 
                   
Crude oil 2019 Three-Way Collars NYMEX WTI 21,000
 
 
$40.71
 
$49.80
 
$67.80
 
Crude oil 2019 Basis Swaps LLS-WTI Cushing 3,000
 
 
 
 
 
$4.57
Crude oil 2019 Basis Swaps WTI Midland-WTI Cushing 7,389
 
 
 
 
 
($4.82)
Crude oil 2019 Sold Call Options NYMEX WTI 3,875
 
 
 
 
$73.66
 
                   
Crude oil 2020 Basis Swaps WTI Midland-WTI Cushing 13,000
 
 
 
 
 
($1.27)
Crude oil 2020 Sold Call Options NYMEX WTI 4,575
 
 
 
 
$75.98
 
                   
Crude oil 2021 Basis Swaps WTI Midland-WTI Cushing 6,000
 
 
 
 
 
$0.03
Period Volumes (in Bbls/d) LLS-NYMEX Price Differential ($/Bbl)
December 2017 15,000
 
$4.13
FY 2018 6,000
 
$2.91
Crude Oil Three-Way Collars
Commodity Period Type of Contract Index 
Volumes
(Bbls
per day)
 
Fixed Price
($ per
Bbl)
 
Sub-Floor Price
($ per
Bbl)
 
Floor Price
($ per
Bbl)
 
Ceiling Price
($ per
Bbl)
 
Fixed
Price
Differential
($ per
Bbl)
NGLs 4Q18 Price Swaps OPIS-Ethane 2,200
 
$12.01
 
 
 
 
NGLs 4Q18 Price Swaps OPIS-Propane 1,500
 
$34.23
 
 
 
 
NGLs 4Q18 Price Swaps OPIS-Butane 200
 
$38.85
 
 
 
 
NGLs 4Q18 Price Swaps OPIS-Isobutane 600
 
$38.98
 
 
 
 
NGLs 4Q18 Price Swaps OPIS-Natural Gasoline 600
 
$55.23
 
 
 
 
    NYMEX Prices
Period 
Volumes
(in Bbls/d)
 
Sub-Floor Price
($/Bbl)
 
Floor Price
($/Bbl)
 
Ceiling Price
($/Bbl)
FY 2018 18,000
 
$39.17
 
$49.08
 
$60.48
FY 2019 6,000
 
$40.00
 
$47.80
 
$61.45
Crude Oil Net Sold Call Options
Period Volumes (in Bbls/d) NYMEX Ceiling Price ($/Bbl)
FY 2018 3,388
 
$71.33
FY 2019 3,875
 
$73.66
FY 2020 4,575
 
$75.98
Natural Gas Fixed Price Swaps
Period Volumes (in MMBtu/d) NYMEX Price ($/MMBtu)
Q4 2017 20,000
 
$3.30
Natural Gas Sold Call Options
Period Volumes (in MMBtu/d) NYMEX Ceiling Price ($/MMBtu)
Q4 2017 33,000
 
$3.00
FY 2018 33,000
 
$3.25
FY 2019 33,000
 
$3.25
FY 2020 33,000
 
$3.50
Commodity Period Type of Contract Index 
Volumes
(MMBtu
per day)
 
Fixed
Price
($ per
MMBtu)
 
Sub-Floor Price
($ per
MMBtu)
 
Floor Price
($ per
MMBtu)
 
Ceiling Price
($ per
MMBtu)
 
Fixed
Price
Differential
($ per
MMBtu)
Natural gas 4Q18 Price Swaps NYMEX Henry Hub 25,000
 
$3.01
 
 
 
 
Natural gas 4Q18 Sold Call Options NYMEX Henry Hub 33,000
 
 
 
 
$3.25
 
                   
Natural gas 2019 Sold Call Options NYMEX Henry Hub 33,000
 
 
 
 
$3.25
 
                   
Natural gas 2020 Sold Call Options NYMEX Henry Hub 33,000
 
 
 
 
$3.50
 
The Company typically has numerous hedge positionscommodity derivative instruments outstanding with a counterparty that span severalwere executed at various dates, for various contract types, commodities and time periods and often resultresulting in both fair valuecommodity derivative asset and liability positions held with that counterparty. The Company nets its commodity derivative instrument fair values executed with the same counterparty, along with any deferred premium obligations, to a single asset or liability pursuant to ISDA master agreements,International Swap Dealers Association Master Agreements (“ISDAs”), which provide for net settlement over the term of the contract and in the event of default or termination of the contract.
Counterparties to the Company’s commodity derivative instruments who are also lenders under the Company’s credit agreement (“Lender Counterparty”) allow the Company to satisfy any need for margin obligations associated with commodity derivative instruments where the Company is in a net liability position with its counterpartiesthe Lender Counterparty with the collateral securing the credit

agreement, thus eliminating the need for independent collateral posting. Counterparties to the Company’s commodity derivative instruments who are not lenders under the Company’s credit agreement (“Non-Lender Counterparty”) can require commodity derivative contractsinstruments to be novated to a lenderLender Counterparty if the Company’s net liability position exceeds the Company’s unsecured credit limit with that counterpartythe Non-Lender Counterparty and therefore do not require the posting of cash collateral.
Because the counterparties haveeach Lender Counterparty has an investment grade credit ratings, orrating and the Company has obtained guaranteesa guaranty from the applicable counterparty’seach Non-Lender Counterparty’s parent company which has an investment grade parent company,credit rating, the Company believes it does not have significant credit risk and accordingly does not currently require its counterparties to post collateral to support the net asset positions of its commodity derivative instruments. Although the Company does not currently anticipate nonperformance from its counterparties, it continually monitors the credit ratings of each Lender Counterparty and each Non-Lender Counterparty’s parent company. The Company executes its derivative instruments with seventeen counterparties andto minimize its counterparty’s parent company, as applicable.

credit exposure to any individual counterparty.
Contingent Consideration Arrangements
The Company has entered intopurchase and sale agreements containing contingent consideration that are, or will be, required to be bifurcated and accounted for separately as derivative instruments. The Company records the contingent consideration on its consolidated balance sheets measured at fair value with gains and losses as a result of changes in the fair value of the contingent consideration recognized as (gain) loss on derivatives, net in the consolidated statements of operations in the period in which the changes occur. The cash flows resulting from payments due from the Company for settlement of contingent consideration, which will occur in January 2019 at the earliest, are classified as cash flows from financing activities for the portion of the payment up to the acquisition date fair value with any amounts paid in excess classified as cash flows from operating activities.
As part of the ExL Acquisition and divestitures of the Company’s assets in the Niobrara, Marcellus and Utica, included contingent consideration arrangements that entitle the Company agreed to receive or require the Contingent ExL Payment that will require payment of $50.0 million per year for each of the years of 2018 through 2021, with a cap of $125.0 million,Company to pay specified amounts if the EIA WTI average price is greater than $50.00 per barrel for the respective year. The Company determined that the Contingent ExL Payment was not clearly and closely related to the purchase and sale agreement for the ExL Properties, and therefore bifurcated this embedded feature and recorded this derivative at its acquisition date fair value of $52.3 millioncommodity prices exceed specified thresholds, which are summarized in the consolidated financial statements. Astable below. See “Note 3. Acquisitions and Divestitures of September 30, 2017, the estimated fair valueOil and Gas Properties” for details of the Contingent ExL Payment was $60.3 millionthese acquisitions and was classified as non-current “Derivative liabilities” in the consolidated balance sheets.divestitures.

Contingent Consideration Arrangements Years 
Threshold (1)
 Contingent Receipt (Payment) - Annual Contingent Receipt (Payment) - Aggregate Limit
      (In thousands)
Contingent ExL Consideration 2018 
$50.00
 
($50,000)  
  2019 50.00
 (50,000)  
  2020 50.00
 (50,000)  
  2021 50.00
 (50,000) 
($125,000)
         
Contingent Niobrara Consideration 2018 
$55.00
 
$5,000
  
  2019 55.00
 5,000
  
  2020 60.00
 5,000
 
         
Contingent Marcellus Consideration 2018 
$3.13
 
$3,000
  
  2019 3.18
 3,000
  
  2020 3.30
 3,000
 
$7,500
         
Contingent Utica Consideration 2018 
$50.00
 
$5,000
  
  2019 53.00
 5,000
  
  2020 56.00
 5,000
 
(1)The price used to determine whether the specified threshold for each year has been met for the Contingent ExL Consideration, Contingent Niobrara Consideration and Contingent Utica Consideration is the average daily closing spot price per barrel of WTI crude oil as measured by the U.S. Energy Information Administration. The price used to determine whether the specified threshold for each year has been met for the Marcellus Contingent Consideration is the average monthly settlement price per MMBtu of Henry Hub natural gas for the next calendar month, as determined on the last business day preceding each calendar month as measured by the CME Group Inc.
Derivative Assets and Liabilities
AllCommodity derivative instruments and contingent consideration arrangements are recorded onin the Company’s consolidated balance sheets as either an asset or liability measured at fair value. As of September 30, 2018, the Company had $9.8 million classified as current derivative assets and $49.2 million classified as current derivative liabilities, representing the first cash receipts and payments, expected to occur in January 2019, from settlement of contingent consideration assets and liabilities. The deferred premium obligations associated with the Company’s commodity derivative instruments are recorded in the period in which they are incurred and are netted with the commodity derivative instrument fair value asset or liability fair values pursuant to the netting arrangementsprovisions of the ISDAs described above.

The combined derivative instrument asset and liability fair value assets and liabilities, including deferred premium obligations,values recorded in the Company’s consolidated balance sheets as of September 30, 20172018 and December 31, 20162017 are summarized below:
 September 30, 2017 September 30, 2018
 Gross Amounts Recognized Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets Gross Amounts Recognized Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets
 (In thousands) (In thousands)
Commodity derivative instruments 
$11,571
 
($8,757) 
$2,814
 
$19,408
 
($18,985) 
$423
Deferred premium obligations 
 (879) (879)
Other current assets 
$11,571
 
($9,636) 
$1,935
Contingent Niobrara Consideration 4,920
 
 4,920
Contingent Utica Consideration 4,915
 
 4,915
Derivative assets 
$29,243
 
($18,985) 
$10,258
Commodity derivative instruments 10,415
 (9,867) 548
 12,028
 (12,028) 
Deferred premium obligations 
 (423) (423)
Other assets-non current 
$10,415
 
($10,290) 
$125
Contingent Niobrara Consideration 6,755
 
 6,755
Contingent Marcellus Consideration 1,315
 
 1,315
Contingent Utica Consideration 7,300
 
 7,300
Other assets 
$27,398
 
($12,028) 
$15,370
            
Commodity derivative instruments 
($9,143) 
$8,757
 
($386) 
($123,611) 
$9,876
 
($113,735)
Deferred premium obligations (7,271) 879
 (6,392) (9,109) 9,109
 
Contingent ExL Consideration (49,160) 
 (49,160)
Derivative liabilities-current 
($16,414) 
$9,636
 
($6,778) 
($181,880) 
$18,985
 
($162,895)
Commodity derivative instruments (13,711) 9,867
 (3,844) (45,532) 6,314
 (39,218)
Deferred premium obligations (13,463) 423
 (13,040) (5,714) 5,714
 
Contingent ExL Payment (60,300) 
 (60,300)
Contingent ExL Consideration (62,885) 
 (62,885)
Derivative liabilities-non current 
($87,474) 
$10,290
 
($77,184) 
($114,131) 
$12,028
 
($102,103)
 December 31, 2016 December 31, 2017
 Gross Amounts Recognized Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets Gross Amounts Recognized Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets
 (In thousands) (In thousands)
Commodity derivative instruments 
$7,990
 
($6,753) 
$1,237
 
$4,869
 
($4,869) 
$—
Deferred premium obligations 
 
 
Other current assets 
$7,990
 
($6,753) 
$1,237
Derivative assets 
$4,869
 
($4,869) 
$—
Commodity derivative instruments 3,882
 (3,882) 
 9,505
 (9,505) 
Deferred premium obligations 
 
 
Other assets-non current 
$3,882
 
($3,882) 
$—
Contingent Marcellus Consideration 2,205
 
 2,205
Contingent Utica Consideration 7,985
 
 7,985
Other assets 
$19,695
 
($9,505) 
$10,190
            
Commodity derivative instruments 
($27,346) 
$6,753
 
($20,593) 
($52,671) 
($4,450) 
($57,121)
Deferred premium obligations (2,008) 
 (2,008) (9,319) 9,319
 
Derivative liabilities-current 
($29,354) 
$6,753
 
($22,601) 
($61,990) 
$4,869
 
($57,121)
Commodity derivative instruments (28,841) 3,882
 (24,959) (24,609) (2,098) (26,707)
Deferred premium obligations (2,569) 
 (2,569) (11,603) 11,603
 
Contingent ExL Payment 
 
 
Contingent ExL Consideration (85,625) 
 (85,625)
Derivative liabilities-non current 
($31,410) 
$3,882
 
($27,528) 
($121,837) 
$9,505
 
($112,332)
See “Note 11. Fair Value Measurements” for additional detailsinformation regarding the fair value of the Company’s derivative instruments.

(Gain) Loss on Derivatives, Net
The Company has elected not to meet the criteria to qualify its commodity derivative instruments for hedge accounting treatment. Therefore, all gains and losses as a result of changes in the fair value of the Company’s commodity derivative instruments, andas well as its contingent consideration arrangements, are recognized as (gain)“(Gain) loss on derivatives, netnet” in the Company’s consolidated statements of operationsincome in the period in which the changes occur. All deferredDeferred premium obligations associated with the Company’s commodity

derivative instruments are recognized in (gain)as “(Gain) loss on derivatives, netnet” in the Company’s consolidated statements of operationsincome in the period in which the deferred premium obligations are incurred. The effect of derivative instruments and deferred premium obligationsnet (gain) loss on derivatives in the Company’s consolidated statements of operationsincome for the three and nine months ended September 30, 2018 and 2017 and 2016 isare summarized below:
  Three Months Ended
September 30,
 Nine Months Ended
September 30,
  Three Months Ended September 30,  Nine Months Ended September 30,
 2017 2016 2017 2016 2018 2017 2018 2017
 (In thousands) (In thousands)
(Gain) Loss on Derivatives, Net                
Crude oil 
$8,409
 
($8,309) 
($39,754) 
$12,006
 
$43,664
 
$8,409
 
$126,612
 
($39,754)
NGL 5,086
 
 9,885
 
Natural gas (2,183) (3,490) (12,902) 12,167
 (192) (2,183) (3,084) (12,902)
Deferred premium obligations incurred 10,151
 55
 17,652
 5,765
Contingent ExL Payment 8,000
 
 8,000
 
Total (Gain) Loss on Derivatives, Net 
$24,377
 
($11,744) 
($27,004) 
$29,938
Deferred premium obligations 
 10,151
 
 17,652
Contingent ExL Consideration 9,990
 8,000
 26,420
 8,000
Contingent Niobrara Consideration (1,705) 
 (3,795) 
Contingent Marcellus Consideration 215
 
 890
 
Contingent Utica Consideration (1,670) 
 (4,230) 
(Gain) Loss on Derivatives, Net 
$55,388
 
$24,377
 
$152,698
 
($27,004)
Cash Received (Paid) for Derivative Settlements, Net
Cash flows are impacted to the extent that settlements under these contracts,of commodity derivative instruments, including deferred premium obligations, paid,and contingent consideration arrangements result in payments tocash received or receipts from the counterpartypaid during the period and are presentedrecognized as “Cash received (paid) for derivative settlements, net” in the consolidated statements of cash flows. Cash received or paid in settlement of contingent consideration assets or liabilities, respectively, are classified as cash flows from financing activities up to the divestiture or acquisition date fair value with any excess classified as cash flows from operating activities. For the three and nine months ended September 30, 2018 and 2017, there were no settlements of contingent consideration arrangements. The net cash received (paid) for derivative settlements net in the Company’s consolidated statements of cash flows. The effect of commodity derivative instruments and deferred premium obligations on the Company’s consolidated statements of cash flows for the three and nine months ended September 30, 20172018 and 20162017 are summarized below:
  Three Months Ended
September 30,
 Nine Months Ended
September 30,
  Three Months Ended September 30,  Nine Months Ended September 30,
 2017 2016 2017 2016 2018 2017 2018 2017
 (In thousands)
Cash Flows from Operating Activities (In thousands)
Cash Received (Paid) for Derivative Settlements, Net                
Crude oil 
$6,500
 
$23,165
 
$9,941
 
$104,549
 
($21,261) 
$6,500
 
($54,594) 
$9,941
NGL (2,641) 
 (3,829) 
Natural gas 522
 
 (731) 
 245
 522
 785
 (731)
Deferred premium obligations paid (566) (2,808) (1,496) (5,729)
Total Cash Received (Paid) for Derivative Settlements, Net 
$6,456
 
$20,357
 
$7,714
 
$98,820
Deferred premium obligations (2,605) (566) (7,072) (1,496)
Cash Received (Paid) for Derivative Settlements, Net 
($26,262) 
$6,456
 
($64,710) 
$7,714
11. Fair Value Measurements
Accounting guidelines for measuring fair value establish a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy categorizes assets and liabilities measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. The three levels are defined as follows:
Level 1 – Observable inputs such as quoted prices in active markets at the measurement date for identical, unrestricted assets or liabilities.
Level 2 – Other inputs that are observable directly or indirectly such as quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability.
Level 3 – Unobservable inputs for which there is little or no market data and which the Company makes its own assumptions about how market participants would price the assets and liabilities.

Assets and Liabilities Measured at Fair Value on a Recurring Basis
The following tables summarize the Company’s derivative instrument assets and liabilities measured at fair value on a recurring basis as of September 30, 20172018 and December 31, 2016:2017:
  September 30, 2017
  Level 1 Level 2 Level 3
  (In thousands)
Derivative instrument assets 
$—
 
$3,362
 
$—
Derivative instrument liabilities 
$—
 
($4,230) 
($60,300)
September 30, 2018
Level 1Level 2Level 3
(In thousands)
Assets
Commodity derivative instruments
$—

$423

$—
Contingent Niobrara Consideration

11,675
Contingent Marcellus Consideration

1,315
Contingent Utica Consideration

12,215
Liabilities
Commodity derivative instruments
$—

($152,953)
$—
Contingent ExL Consideration

(112,045)
  December 31, 20162017
  Level 1 Level 2 Level 3
  (In thousands)
Derivative instrument assetsAssets
Commodity derivative instruments 
$—
 
$1,237
 
$—
Derivative instrument liabilitiesContingent Niobrara Consideration


Contingent Marcellus Consideration

2,205
Contingent Utica Consideration

7,985
Liabilities
Commodity derivative instruments 
$—
 
($45,55283,828) 
$—
Contingent ExL Consideration

(85,625)
The derivative asset and liability fair values reported in the consolidated balance sheets are as of the balance sheet date and subsequently change as a result of changes in commodity prices, market conditions and other factors.
Commodity derivative instruments. The Company uses Level 2 inputs to measure the fair value of the Company’s commodity derivative instruments is based on a third-party industry-standard pricing model usingwhich uses contract terms and prices and assumptions and inputs that are substantially observable in active markets throughout the full term of the instruments including forward oil and gas price curves, discount rates and volatility factors.factors, and are therefore designated as Level 2 within the valuation hierarchy. The fair values are also compared to the values provided by the counterparties for reasonableness and are adjusted for the counterparties’ credit quality for commodity derivative assets and the Company’s credit quality for commodity derivative liabilities.
The Company typically has numerous hedge positions that span several time periods and often result in both fair value derivative asset and liability positions held with that counterparty. Deferred premium obligations are netted with the fair value derivative asset and liability positions, which are all offset to a single asset or liability, at the end of each reporting period. The Company nets the fair values of its derivative assets and liabilities associated with commodity derivative instruments executed with the same counterparty, along with deferred premium obligations, pursuant to ISDA master agreements, which provide for net settlement over the term of the contract and in the event of default or termination of the contract. The Company had no transfers into Level 1 and no transfers into or out of Level 2 for the nine months ended September 30, 20172018 and 2016.2017.
Contingent consideration.consideration arrangements. The Company determined thatfair values of the Contingent ExL Payment associated with the ExL Acquisition is an embedded derivative and is not clearly and closely related to the purchase and sale agreement for the ExL Properties. As a result, the Company bifurcated this embedded feature and reflected the liability at fair value in the consolidated financial statements. The fair value wascontingent consideration arrangements were determined by a third-party valuation specialist using a Monte Carlo simulationsimulations including significant inputs such as future commodity prices,forward oil and gas price curves, volatility factors, for the future commodity prices and a risk adjusted discount rate.rates, which include adjustments for the counterparties’ credit quality for contingent consideration assets and the Company’s credit quality for the contingent consideration liabilities. As some of these assumptions are not observable throughout the full term of the contingent consideration arrangements, the contingent consideration wasarrangements were designated as Level 3 within the valuation hierarchy. The Company reviewed the valuation,valuations, including the related inputs, and analyzed changes in fair value measurements between periods.

The following table presents the reconciliation of changes in the fair valuevalues of the Contingent ExL Paymentcontingent consideration arrangements, which were designated as of September 30, 2017 and August 10, 2017 was a liability of $60.3 million and $52.3 million, respectively. As a result,Level 3 within the Company recorded a loss on the change in fair value of $8.0 million, which was classified as “(Gain) loss on derivatives, net” in the consolidated statements of operations. The Company had no transfers into or out of Level 3valuation hierarchy, for the nine months ended September 30, 20172018 and 2016. 2017:
  Contingent Consideration Arrangements
  Assets Liability
  (In thousands)
December 31, 2017 
$10,190
 
($85,625)
Recognition of divestiture date fair value 7,880
 
Gain (loss) on changes in fair value, net(1)
 7,135
 (26,420)
Transfers into (out of) Level 3 
 
September 30, 2018 
$25,205
 
($112,045)
Contingent Consideration Arrangements
AssetsLiability
(In thousands)
December 31, 2016
$—

$—
Recognition of acquisition date fair value
(52,300)
Loss on change in fair value(1)

(8,000)
Transfers into (out of) Level 3

September 30, 2017
$—

($60,300)
(1)Recognized as “(Gain) loss on derivatives, net” in the consolidated statements of income.
See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” and “Note 10. Derivative Instruments” for further details ofadditional information regarding the contingent consideration.consideration arrangements.
Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
The fair value measurements of assets acquired and liabilities assumed, other than contingent consideration which is discussed above,asset retirement obligations are measured onas of the date a nonrecurring basis on the acquisition date by a third-party valuation specialistwell is drilled or when production equipment and facilities are installed using a discounted cash flow model based on inputs that are not observable in the market and therefore representare designated as Level 3 inputs. Significant inputs towithin the valuation of acquired oil and gas properties include estimates of estimated volumes of oil and gas reserves, production rates, future commodity prices, timing of development, future operating and development costs and a risk adjusted discount rate. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the assets acquired and liabilities assumed as of the acquisition dates for the ExL Acquisition and Sanchez Acquisition.
The fair value measurements of asset retirement obligations are measured on a nonrecurring basis when a well is drilled or acquired or when production equipment and facilities are installed or acquired using a discounted cash flow model based on inputs that are

not observable in the market and therefore represent Level 3 inputs.hierarchy. Significant inputs to the fair value measurement of asset retirement obligations include estimates of the costs of plugging and abandoning oil and gas wells, removing production equipment and facilities and restoring the surface of the land as well as estimates of the economic lives of the oil and gas wells and future inflation rates.
The fair value measurements of the Preferred Stockassets acquired and liabilities assumed, other than contingent consideration which is discussed above, are measured on a nonrecurring basis onas of the issuanceacquisition date by a third-party valuation specialist using a discounted cash flow model based on inputs that are not observable in the market and are therefore representdesignated as Level 3 inputs. Significant inputs to the valuation of the Preferred Stockacquired oil and gas properties include the per share cash purchaseforward oil and gas price redemption premiums, liquidation preference,curves, estimated volumes of oil and redemption assumptions provided by the Company.
gas reserves, expectations for timing and amount of future development and operating costs, future plugging and abandonment costs, and a risk adjusted discount rate. See “Note 8. Preferred Stock3. Acquisitions and Warrants”Divestitures of Oil and Gas Properties” for details regarding the allocationof assets acquired and liabilities assumed as of the net proceeds based onacquisition date for the relative fair values of the Preferred Stock and Warrants.ExL Acquisition.

Fair Value of Other Financial Instruments
The Company’s other financial instruments consist of cash and cash equivalents, receivables, payables, and long-term debt, which are classified as Level 1 under the fair value hierarchy.debt. The carrying amounts of cash and cash equivalents, receivables, and payables approximate fair value due to the highly liquid or short-term nature of these instruments. The carrying amount of long-term debt associated with borrowings outstanding under the Company’s revolving credit facility approximates fair value as borrowings bear interest at variable rates. The following table presents the carrying amounts of the Company’s senior notes and other long-term debt, net of unamortized premiums and debt issuance costs with the fair values measured using Level 1 inputs based on quoted secondary market trading prices.prices which are designated as Level 1 within the valuation hierarchy.
 September 30, 2017 December 31, 2016 September 30, 2018 December 31, 2017
 Carrying Amount Fair Value Carrying Amount Fair Value Carrying Amount Fair Value Carrying Amount Fair Value
 (In thousands) (In thousands)
7.50% Senior Notes due 2020 
$594,439
 
$610,500
 
$593,447
 
$624,750
 
$129,144
 
$130,000
 
$446,087
 
$459,518
6.25% Senior Notes due 2023 641,473
 659,750
 640,546
 672,750
 642,781
 664,625
 641,792
 674,375
8.25% Senior Notes due 2025

 245,502
 269,375
 
 
 245,927
 268,750
 245,605
 274,375
Other long-term debt due 2028 4,425
 4,408
 4,425
 4,419
 
 
 4,425
 4,445
12. Condensed Consolidating Financial Information
The rules of the SEC require that condensed consolidating financial information be provided for a subsidiary that has guaranteed the debt of a registrant issued in a public offering, where the guarantee is full, unconditional and joint and several and where the voting interest of the subsidiary is 100% owned by the registrant. The Company is, therefore, presenting condensed consolidating financial information on a parent company, combined guarantor subsidiaries, combined non-guarantor subsidiaries and consolidated basis and should be read in conjunction with the consolidated financial statements. The financial information may not necessarily be indicative of results of operations, cash flows, or financial position had such guarantor subsidiaries operated as independent entities.

CARRIZO OIL & GAS, INC.
CONDENSED CONSOLIDATING BALANCE SHEETS
(In thousands)
(Unaudited)
 September 30, 2017 September 30, 2018
 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Assets                    
Total current assets 
$3,512,988
 
$89,589
 
$—
 
($3,499,850) 
$102,727
 
$3,114,698
 
$133,308
 
$—
 
($3,096,917) 
$151,089
Total property and equipment, net 39,789
 2,592,458
 5,057
 (3,986) 2,633,318
 6,570
 2,709,162
 3,028
 (3,833) 2,714,927
Investment in subsidiaries (1,097,703) 
 
 1,097,703
 
 (576,826) 
 
 576,826
 
Other assets 9,526
 155
 
 
 9,681
 29,611
 15,371
 
 
 44,982
Total Assets 
$2,464,600
 
$2,682,202
 
$5,057
 
($2,406,133) 
$2,745,726
 
$2,574,053
 
$2,857,841
 
$3,028
 
($2,523,924) 
$2,910,998
                    
Liabilities and Shareholders’ Equity                    
Current liabilities 
$128,778
 
$3,687,474
 
$5,057
 
($3,502,870) 
$318,439
 
$305,096
 
$3,347,575
 
$3,028
 
($3,099,937) 
$555,762
Long-term liabilities 1,716,898
 92,431
 
 15,879
 1,825,208
 1,357,294
 87,092
 
 15,879
 1,460,265
Preferred stock 213,400
 
 
 
 213,400
 173,629
 
 
 
 173,629
Total shareholders’ equity 405,524
 (1,097,703) 
 1,080,858
 388,679
 738,034
 (576,826) 
 560,134
 721,342
Total Liabilities and Shareholders’ Equity 
$2,464,600
 
$2,682,202
 
$5,057
 
($2,406,133) 
$2,745,726
 
$2,574,053
 
$2,857,841
 
$3,028
 
($2,523,924) 
$2,910,998
 December 31, 2016 December 31, 2017
 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Assets                    
Total current assets 
$2,735,830
 
$63,513
 
$—
 
($2,726,355) 
$72,988
 
$3,441,633
 
$105,533
 
$—
 
($3,424,288) 
$122,878
Total property and equipment, net 42,181
 1,503,695
 3,800
 (3,916) 1,545,760
 5,953
 2,630,707
 3,028
 (3,878) 2,635,810
Investment in subsidiaries (1,282,292) 
 
 1,282,292
 
 (999,793) 
 
 999,793
 
Other assets 7,423
 156
 
 
 7,579
 9,270
 10,346
 
 
 19,616
Total Assets 
$1,503,142
 
$1,567,364
 
$3,800
 
($1,447,979) 
$1,626,327
 
$2,457,063
 
$2,746,586
 
$3,028
 
($2,428,373) 
$2,778,304
                    
Liabilities and Shareholders’ Equity                    
Current liabilities 
$114,805
 
$2,822,729
 
$3,800
 
($2,729,375) 
$211,959
 
$165,701
 
$3,631,401
 
$3,028
 
($3,427,308) 
$372,822
Long-term liabilities 1,348,105
 26,927
 
 15,878
 1,390,910
 1,689,466
 114,978
 
 15,879
 1,820,323
Preferred stock 
 
 
 
 
 214,262
 
 
 
 214,262
Total shareholders’ equity 40,232
 (1,282,292) 
 1,265,518
 23,458
 387,634
 (999,793) 
 983,056
 370,897
Total Liabilities and Shareholders’ Equity 
$1,503,142
 
$1,567,364
 
$3,800
 
($1,447,979) 
$1,626,327
 
$2,457,063
 
$2,746,586
 
$3,028
 
($2,428,373) 
$2,778,304

CARRIZO OIL & GAS, INC.
CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONSINCOME
(In thousands)
(Unaudited)
 Three Months Ended September 30, 2017 Three Months Ended September 30, 2018
 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$35
 
$181,244
 
$—
 
$—
 
$181,279
 
$38
 
$303,337
 
$—
 
$—
 
$303,375
Total costs and expenses 54,061
 119,366
 
 29
 173,456
 85,242
 135,920
 
 (13) 221,149
Income (loss) before income taxes (54,026) 61,878
 
 (29) 7,823
 (85,204) 167,417
 
 13
 82,226
Income tax benefit 
 
 
 
 
Income tax expense 
 (880) 
 
 (880)
Equity in income of subsidiaries 61,878
 
 
 (61,878) 
 166,537
 
 
 (166,537) 
Net income 
$7,852
 
$61,878
 
$—
 
($61,907) 
$7,823
 
$81,333
 
$166,537
 
$—
 
($166,524) 
$81,346
Dividends on preferred stock (2,249) 
 
 
 (2,249) (4,457) 
 
 
 (4,457)
Accretion on preferred stock (771) 
 
 
 (771)
Loss on redemption of preferred stock 
 
 
 
 
Net income attributable to common shareholders 
$5,603
 
$61,878
 
$—
 
($61,907) 
$5,574
 
$76,105
 
$166,537
 
$—
 
($166,524) 
$76,118
  Three Months Ended September 30, 2016
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$105
 
$111,072
 
$—
 
$—
 
$111,177
Total costs and expenses 28,551
 184,047
 
 66
 212,664
Loss before income taxes (28,446) (72,975) 
 (66) (101,487)
Income tax benefit 
 
 
 313
 313
Equity in loss of subsidiaries (72,975) 
 
 72,975
 
Net loss 
($101,421) 
($72,975) 
$—
 
$73,222
 
($101,174)
Dividends on preferred stock 
 
 
 
 
Net loss attributable to common shareholders 
($101,421) 
($72,975) 
$—
 
$73,222
 
($101,174)
  Three Months Ended September 30, 2017
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$35
 
$181,244
 
$—
 
$—
 
$181,279
Total costs and expenses 54,061
 119,366
 
 29
 173,456
Income (loss) before income taxes (54,026) 61,878
 
 (29) 7,823
Income tax expense 
 
 
 
 
Equity in income of subsidiaries 61,878
 
 
 (61,878) 
Net income 
$7,852
 
$61,878
 
$—
 
($61,907) 
$7,823
Dividends on preferred stock (2,249) 
 
 
 (2,249)
Accretion on preferred stock 
 
 
 
 
Loss on redemption of preferred stock 
 
 
 
 
Net income attributable to common shareholders 
$5,603
 
$61,878
 
$—
 
($61,907) 
$5,574

CARRIZO OIL & GAS, INC.
CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONSINCOME
(In thousands)
(Unaudited)
 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2018
 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$291
 
$498,826
 
$—
 
$—
 
$499,117
 
$77
 
$792,551
 
$—
 
$—
 
$792,628
Total costs and expenses 80,660
 314,237
 
 70
 394,967
 278,942
 367,902
 
 (45) 646,799
Income (loss) before income taxes (80,369) 184,589
 
 (70) 104,150
 (278,865) 424,649
 
 45
 145,829
Income tax benefit 
 
 
 
 
Income tax expense 
 (1,682) 
 
 (1,682)
Equity in income of subsidiaries 184,589
 
 
 (184,589) 
 422,967
 
 
 (422,967) 
Net income 
$104,220
 
$184,589
 
$—
 
($184,659) 
$104,150
 
$144,102
 
$422,967
 
$—
 
($422,922) 
$144,147
Dividends on preferred stock (2,249) 
 
 
 (2,249) (13,794) 
 
 
 (13,794)
Accretion on preferred stock (2,264) 
 
 
 (2,264)
Loss on redemption of preferred stock (7,133) 
 
 
 (7,133)
Net income attributable to common shareholders 
$101,971
 
$184,589
 
$—
 
($184,659) 
$101,901
 
$120,911
 
$422,967
 
$—
 
($422,922) 
$120,956
  Nine Months Ended September 30, 2016
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$349
 
$299,414
 
$—
 
$—
 
$299,763
Total costs and expenses 151,445
 822,582
 
 431
 974,458
Loss before income taxes (151,096) (523,168) 
 (431) (674,695)
Income tax benefit 
 
 
 
 
Equity in loss of subsidiaries (523,168) 
 
 523,168
 
Net loss 
($674,264) 
($523,168) 
$—
 
$522,737
 
($674,695)
Dividends on preferred stock 
 
 
 
 
Net loss attributable to common shareholders 
($674,264) 
($523,168) 
$—
 
$522,737
 
($674,695)
  Nine Months Ended September 30, 2017
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$291
 
$498,826
 
$—
 
$—
 
$499,117
Total costs and expenses 80,660
 314,237
 
 70
 394,967
Income (loss) before income taxes (80,369) 184,589
 
 (70) 104,150
Income tax expense 
 
 
 
 
Equity in income of subsidiaries 184,589
 
 
 (184,589) 
Net income 
$104,220
 
$184,589
 
$—
 
($184,659) 
$104,150
Dividends on preferred stock (2,249) 
 
 
 (2,249)
Accretion on preferred stock 
 
 
 
 
Loss on redemption of preferred stock 
 
 
 
 
Net income attributable to common shareholders 
$101,971
 
$184,589
 
$—
 
($184,659) 
$101,901

CARRIZO OIL & GAS, INC.
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2018
 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Net cash provided by (used in) operating activities 
($95,529) 
$376,126
 
$—
 
$—
 
$280,597
 
($218,926) 
$684,218
 
$—
 
$—
 
$465,292
Net cash used in investing activities (728,833) (1,102,155) 
 726,029
 (1,104,959)
Net cash provided by financing activities 825,260
 726,029
 
 (726,029) 825,260
Net increase in cash and cash equivalents 898
 
 
 
 898
Net cash provided by (used in) investing activities 375,265
 (284,076) 
 (400,142) (308,953)
Net cash used in financing activities (163,464) (400,142) 
 400,142
 (163,464)
Net decrease in cash and cash equivalents (7,125) 
 
 
 (7,125)
Cash and cash equivalents, beginning of period 4,194
 
 
 
 4,194
 9,540
 
 
 
 9,540
Cash and cash equivalents, end of period 
$5,092
 
$—
 
$—
 
$—
 
$5,092
 
$2,415
 
$—
 
$—
 
$—
 
$2,415
 Nine Months Ended September 30, 2016 Nine Months Ended September 30, 2017
 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated 
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Net cash provided by (used in) operating activities 
($10,882) 
$208,729
 
$—
 
$—
 
$197,847
 
($95,529) 
$376,126
 
$—
 
$—
 
$280,597
Net cash used in investing activities (122,846) (331,351) (740) 123,362
 (331,575) (728,833) (1,102,155) 
 726,029
 (1,104,959)
Net cash provided by financing activities 94,045
 122,622
 740
 (123,362) 94,045
 825,260
 726,029
 
 (726,029) 825,260
Net decrease in cash and cash equivalents (39,683) 
 
 
 (39,683)
Net increase in cash and cash equivalents 898
 
 
 
 898
Cash and cash equivalents, beginning of period 42,918
 
 
 
 42,918
 4,194
 
 
 
 4,194
Cash and cash equivalents, end of period 
$3,235
 
$—
 
$—
 
$—
 
$3,235
 
$5,092
 
$—
 
$—
 
$—
 
$5,092

13. Supplemental Cash Flow Information
Supplemental cash flow disclosures and non-cash investing activities are presented below:
 Nine Months Ended
September 30,
  Nine Months Ended September 30,
 2017 2016 2018 2017
 (In thousands) (In thousands)
Supplemental cash flow disclosures:        
Cash paid for interest, net of amounts capitalized 
$59,389
 
$55,808
 
$44,644
 
$59,389
        
Non-cash investing activities:        
Increase (decrease) in capital expenditure payables and accruals 
$98,829
 
$7,316
Contingent ExL Payment 52,300
 
Increase in capital expenditure payables and accruals 
$61,893
 
$98,829
Fair value of contingent consideration (assets) liabilities on date of (divestiture) acquisition (7,880) 52,300
Stock-based compensation expense capitalized to oil and gas properties 2,543
 3,878
 5,384
 2,543
Asset retirement obligations capitalized to oil and gas properties 2,761
 766
 1,127
 2,761
14. Subsequent Events
Potential Divestiture of Marcellus Assets
On October 5, 2017, the Company entered into a purchase and sale agreement with BKV Chelsea, LLC, a subsidiary of Kalnin Ventures LLC, to sell substantially all of its assets in the Marcellus Shale for an agreed upon price of $84.0 million, subject to customary purchase price adjustments. The transaction has an effective date of April 1, 2017 and is expected to close by the end of November 2017. On October 5, 2017, the buyer paid $6.3 million into escrow as a deposit.
The Company could also receive contingent consideration of $3.0 million per year if the average settlement prices of a MMBtu of Henry Hub natural gas for the next calendar month, as determined on the last business day preceding each calendar month as measured by the CME Group Inc. (the “CME HH average price”) is above $3.13, $3.18, and $3.30 for the years of 2018, 2019, and 2020, respectively, with such receipts due on January 29, 2019, January 28, 2020, and January 28, 2021, respectively. This conditional consideration will be zero for the respective year if such CME HH average price of a MMBtu of Henry Hub natural gas is at or below the per MMBtu amounts listed above for any of such years, and is capped at $7.5 million.
Simultaneous with the signing of the Marcellus Shale transaction discussed above, the Company’s existing joint venture partner in the Marcellus Shale, Reliance Marcellus II, LLC (“Reliance”), a wholly owned subsidiary of Reliance Holding USA, Inc. and an affiliate of Reliance Industries Limited, entered into a purchase and sale agreement with BKV Chelsea, LLC to sell its interest in the same oil and gas properties. Simultaneous with the closing of these Marcellus Shale sale transactions, the agreements governing the Reliance joint venture will be assigned to the buyer and, after giving effect to such transactions, the Reliance joint venture will terminate except for limited post-closing obligations.
HedgingCommodity Derivative Instruments
In October and November 2017,2018, the Company entered into the following crude oilcommodity derivative positionsinstruments at weighted average contract volumes and prices:
Crude Oil Basis Swaps
Period Volumes (in Bbls/d) Midland-NYMEX Price Differential ($/Bbl)
FY 2018 6,000
 
($0.10)
Commodity Period Type of Contract Index 
Volumes
(Bbls
per day)
 
Fixed Price
($ per
Bbl)
 
Sub-Floor
Price
($ per
Bbl)
 
Floor
Price
($ per Bbl)
 
Ceiling Price
($ per
Bbl)
 
Fixed
Price
Differential
($ per
Bbl)
Crude oil 2019 Three-Way Collars NYMEX WTI 6,000
 
 
$45.00
 
$55.00
 
$93.01
 
Crude oil 2019 Basis Swaps LLS-WTI Cushing 1,000
 
$5.78
 
 
 
 
Crude Oil Three-Way CollarsRedemption of 7.50% Senior Notes Due 2020
On October 18, 2018, the Company delivered a notice of conditional redemption to the trustee for its 7.50% Senior Notes to call for redemption on November 19, 2018, the remaining $130.0 million outstanding aggregate principal amount of 7.50% Senior Notes at a redemption price of 100% of par, plus accrued and unpaid interest. The Company’s redemption obligation was conditioned on and subject to there being made available to the Company under its revolving credit facility a commitment amount of at least $1.1 billion as of November 19, 2018, which was satisfied on October 29, 2018 in connection with the amendment to the credit agreement discussed below, therefore, the Company’s redemption obligation is no longer conditional. As a result of the redemption, the Company expects to record a loss on extinguishment of debt of approximately $0.8 million, which is solely attributable to the write-off of unamortized premium and debt issuance costs.
    NYMEX Prices
Period 
Volumes
(in Bbls/d)
 
Sub-Floor Price
($/Bbl)
 
Floor Price
($/Bbl)
 
Ceiling Price
($/Bbl)
FY 2018 6,000
 
$40.00
 
$49.00
 
$59.13
FY 2019 6,000
 
$40.00
 
$49.00
 
$59.14
Upon redemption of the 7.50% Senior Notes, the May 4, 2022 maturity date of the credit agreement will no longer be subject to a springing maturity date of June 15, 2020.


EleventhThirteenth Amendment to the Credit Agreement
On November 3, 2017,October 29, 2018, the Company entered into an elevenththe thirteenth amendment to its credit agreement governing theits revolving credit facility to, among other things, (i) establish the borrowing base at $900.0 million,$1.3 billion, with an elected commitment amount of $800.0 million,$1.1 billion, until the next redetermination thereof, (ii) reduce the applicable margins for Eurodollar loans from 1.50%-2.50% to 1.25%-2.25% and base rate loans from 0.50%-1.50% to 0.25%-1.25%, each depending on the level of facility usage and each subject to an increase of 0.25% for any period during which the general basket available for restricted payments from $50.0 millionratio of Total Debt to $75.0 millionEBITDA exceeds 3.00 to 1.00, (iii) amend the definition of Capital Leases, and (iii)(iv) amend certain other provisions, in each case as set forth therein. The calculation of the borrowing base was supported solely by the reserves of the Company's Eagle Forddefinitions and Delaware Basin assets.provisions.



Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations
The following discussion and analysis of the financial condition and results of operations of the Company should be read in conjunction with the unaudited interim consolidated financial statements and related notes included in “Item 1. Consolidated Financial Statements (Unaudited)” in this Quarterly Report on Form 10-Q and the discussion under “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” and audited Consolidated Financial Statements included in our 20162017 Annual Report. The following discussion and analysis contains statements, including, but not limited to, statements related to our plans, strategies, objectives, and expectations. Please see “Forward-Looking Statements” for further details about these statements.
General Overview
Operational ResultsThird Quarter 2018 Highlights
Total production for the three months ended September 30,2017 2018 was 55,22464,627 Boe/d, an increase of 35%17% from the three months ended September 30, 2016, 2017, primarily due to production from new wells in the Eagle Ford and Delaware Basin, partially offset by the divestitures in Utica and the addition of production from the Sanchez AcquisitionMarcellus in the fourth quarter of 20162017 and the ExL AcquisitionNiobrara and Eagle Ford in the thirdfirst quarter of 2017.2018, as well as normal production declines.
The following table summarizes our operatedOperated drilling and completion activity for the three months ended September 30, 20172018 along with our drilled but uncompleted and producing wells as of September 30, 2017.2018 are summarized in the table below.
 Three Months Ended September 30, 2017 September 30, 2017 Three Months Ended September 30, 2018 September 30, 2018
 Drilled Completed Drilled But Uncompleted Producing Drilled Completed Drilled But Uncompleted Producing
Region Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net Gross Net
Eagle Ford 24
 19.8
 19
 17.7
 32
 27.2
 512
 448.7
 32
 31.3
 25
 24.3
 20
 19.4
 516
 463.1
Delaware Basin 5
 3.8
 3
 2.4
 7
 5.6
 26
 21.8
 7
 5.3
 10
 8.7
 7
 5.6
 57
 47.2
Niobrara 
 
 
 
 
 
 130
 57.7
Marcellus 
 
 
 
 11
 4.3
 81
 26.0
Utica and other 
 
 
 
 
 
 4
 3.1
Total 29
 23.6
 22
 20.1
 50
 37.1
 753
 557.3
 39
 36.6
 35
 33.0
 27
 25.0
 573
 510.3
Drilling and completion expenditures for the third quarter of 20172018 were $165.0$241.1 million, of which 96%approximately 62% were in the Eagle Ford with the balance in the Delaware Basin. As a result of the relative outlook for crude oil prices in the Eagle Ford and Delaware Basin.Basin, we elected to shift capital expenditures to the Eagle Ford in order to take advantage of the superior returns in the current environment. As of September 30, 2017,2018, we were operating twosix rigs, with four located in the Eagle Ford and three rigs in the Delaware Basin. For the remainder of 2017, we expect to operate two rigs in the Eagle Ford and four rigs, while bringing in a fifth rig temporarily, in the Delaware Basin. Our current 2017 drilling and completion capital expenditure plan increased to $600.0 million to $620.0 million as a result of updated plans in the Delaware Basin as a result of the ExL Acquisition, as well as an increase in non-operated activity on our acreagelocated in the Delaware Basin, and Niobrara. The primary focus for our remaining 2017 drilling andtwo completion capital expenditures is oncrews, both of which were in the continued exploration and developmentEagle Ford. For the remainder of oil-focused plays, such as2018, we currently expect to continue operating an average of six rigs between the Eagle Ford and Delaware Basin, where approximately 94%however, completion activity is expected to decline in the fourth quarter of our remaining 20172018 as we have planned for a frac holiday. Our current 2018 drilling, completion, and completioninfrastructure capital expenditure plan is allocated.remains unchanged at $800.0 million to $825.0 million. See “—Liquidity and Capital Resources—20172018 Drilling, Completion, and CompletionInfrastructure Capital Expenditure Plan and Funding Strategy” for additional details.
Financial ResultsIn July 2018, we closed on the divestiture of certain non-operated assets in the Delaware Basin for aggregate net proceeds of $30.9 million.
In August 2018, we entered into a purchase and sale agreement with Devon to acquire oil and gas properties in the Delaware Basin in Reeves and Ward counties, Texas for an agreed upon price of $215.0 million, subject to customary purchase price adjustments. We paid $21.5 million as a deposit upon signing the purchase and sale agreement and $183.4 million upon closing in October for an aggregate purchase price of $204.9 million. The final purchase price remains subject to post-closing adjustments. Certain of the acreage included in the acquisition is subject to a third party’s right to purchase a 20% interest in such acreage.
In August 2018, we completed a public offering of 9.5 million shares of our common stock at a price per share of $22.55. We used the net proceeds of $213.9 million, net of offering costs, to fund the purchase price of the Devon Acquisition and for general corporate purposes. Pending the closing of the Devon Acquisition, we used the net proceeds to temporarily repay a portion of the borrowings outstanding under the revolving credit facility.
We recorded net income attributable to common shareholders for the three months ended September 30, 2018 of $76.1 million, or $0.85 per diluted share, as compared to net income attributable to common shareholders for the three months ended September 30, 2017 of $5.6 million, or $0.07 per diluted share, as compared to a net loss attributable to common shareholders for the three months ended September 30, 2016 of $101.2 million, or $1.72 per diluted share. The increase in net income attributable to common shareholders for the third quarter of 20172018 as compared to the net lossincome attributable to common shareholders for the third quarter of 20162017 was driven primarily by higher production volumes and commodity prices in the third quarter of 20172018 compared to the third quarter of 2016 and no impairment2017, partially offset by a loss on derivatives, net of proved oil and gas properties during$55.4 million in the third quarter of 20172018 as compared to the $105.1 million impairment of proved oil and gas properties recognized during the third quarter of 2016, partially offset by a loss on derivatives, net of $24.4 million in the third quarter of 2017 comparedand an increase in

our depreciation, depletion and amortization (“DD&A”) expense of $12.5 million to a gain on derivatives, net of $11.7$80.1 million infor the third quarter of 2016.2018 as compared to $67.6 million for the third quarter of 2017. See “—Results of Operations” below for further details.
ExL AcquisitionRecent Developments
On June 28, 2017,In October 2018, we entered intodelivered a purchase and sale agreement with ExL Petroleum Management, LLC and ExL Petroleum Operating Inc. (together “ExL”) to acquire oil and gas properties located in the Delaware Basin in Reeves and Ward Counties, Texas (the “ExL Properties”) for a purchase pricenotice of $648.0 million, subject to customary purchase price adjustments (the “ExL Acquisition”). The transaction had an effective date of May 1, 2017. We paid $75.0 millionconditional redemption to the seller as a deposittrustee for our 7.50% Senior Notes to call for redemption on June 28, 2017 and $601.0 million upon closing on August 10, 2017, which included preliminary purchase price adjustments primarily

related toNovember 19, 2018, the net cash flows from the acquired wells and capital expenditures from the effective date to the closing date. Upon closing the ExL Acquisition, we became the operator of the ExL Properties with an approximate 70% average working interest.
We also agreed to a contingent payment of $50.0 million per year for each of the years of 2018 through 2021 with a cap of $125.0 million. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the contingent payment and “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for further details regarding our evaluation of the contingent payment as an embedded derivative.
We funded the ExL Acquisition with net proceeds from the issuance and sale of Preferred Stock on August 10, 2017, the net proceeds from the common stock offering completed on July 3, 2017, and the net proceeds from the senior notes offering completed on July 14, 2017. See below for further discussion of the Preferred Stock, the common stock offering, and the issuance of 8.25% Senior Notes.
Sale of Preferred Stock
On June 28, 2017, we entered into a Preferred Stock Purchase Agreement with certain funds managed or sub-advised by GSO Capital Partners LP and its affiliates (the “GSO Funds”) to issue and sell in a private placement (i) $250.0 million (250,000 shares) of 8.875% redeemable preferred stock, par value $0.01 per share (the “Preferred Stock”) and (ii) warrants for 2,750,000 shares of our common stock, with a term of ten years and an exercise price of $16.08 per share, exercisable only on a net share settlement basis (the “Warrants”), for a cash purchase price equal to $970.00 per share of Preferred Stock. We paid the GSO Funds $5.0 million as a commitment fee upon signing the Preferred Stock Purchase Agreement. The closing of the private placement occurred on August 10, 2017, contemporaneously with the closing of the ExL Acquisition. We used the net proceeds of approximately $236.4 million, net of issuance costs to fund a portion of the purchase price for the ExL Acquisition and for general corporate purposes. We also entered into a registration rights agreement with the GSO Funds at the closing of the private placement, pursuant to which we agreed to provide certain registration and other rights for the benefit of the GSO Funds. During the fourth quarter of 2017, we filed a registration statement with the SEC to register the Preferred Stock. See “Note 8. Preferred Stock” for further details regarding the Preferred Stock and Warrants.
Sale of Common Stock
On July 3, 2017, we completed a public offering of 15.6 million shares of our common stock at a price per share of $14.28. We used the net proceeds of $222.4 million, net of offering costs, to fund a portion of the purchase price of the ExL Acquisition and for general corporate purposes.
Issuance of Senior Notes
On July 14, 2017, we closed a public offering of $250.0remaining $130.0 million aggregate principal amount of 8.25%outstanding 7.50% Senior Notes due 2025 (the “8.25% Senior Notes”). The 8.25% Senior Notes matureat a redemption price of 100% of par, plus accrued and unpaid interest. Our redemption obligation was conditioned on July 15, 2025 and have interest payable semi-annually each January 15 and July 15. We used the net proceeds of $245.4 million, net of underwriting discounts and commissions and offering costs,subject to fund a portion of the purchase price for the ExL Acquisition and for general corporate purposes. See “Note 6. Long-Term Debt” for further details regarding the 8.25% Senior Notes.
Upon issuance of the 8.25% Senior Notes, in accordance with the credit agreement governingthere being made available to us under the revolving credit facility a commitment amount of at least $1.1 billion as of November 19, 2018, which was satisfied on October 29, 2018 in connection with the amendment to the credit agreement discussed below, therefore, our borrowing base was reduced by 25%redemption obligation is no longer conditional. As a result of the aggregate principal amountredemption, we expect to record a loss on extinguishment of debt of approximately $0.8 million, which is solely attributable to the write-off of unamortized premium and debt issuance costs. Additionally, upon redemption of the 8.25%7.50% Senior Notes, reducing the borrowing base from $900.0 millionMay 4, 2022 maturity date of the credit agreement will no longer be subject to $837.5 million. See “—Eleventh Amendment to the Credit Agreement” below for further discussiona springing maturity date of our borrowing base.June 15, 2020.
Potential Divestitures
On August 31, 2017,In October 2018, we entered into a purchase and sale agreement to sell substantially all of our assets in the Utica Shale for an agreed upon price of $62.0 million. The transaction has an effective date of April 1, 2017 and is expected to close by the end of November 2017. We received $6.2 million from the buyer as a deposit on August 31, 2017. In addition, we could receive contingent consideration of $5.0 million per year for each of the years of 2018 through 2020 with a cap of $15.0 million. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of this transaction.
On October 5, 2017, we entered into a purchase and sale agreement to sell substantially all of our assets in the Marcellus Shale for an agreed upon price of $84.0 million, subject to customary purchase price adjustments. The transaction has an effective date of April 1, 2017 and is expected to close by the end of November 2017. In addition, we could receive contingent consideration of $3.0 million per year for each of the years of 2018 through 2020 with a cap of $7.5 million. See “Note 14. Subsequent Events” for further details of this transaction.
In addition, the process is ongoing to sell our assets in the Niobrara and we believe an agreement could be in place by the end of this year. We are also evaluating certain other of our non-core assets where we do not expect to allocate material capital expenditures over the next few years for potential divestiture. We believe that the divestitures described above are strategically

beneficial as they allow us to focus on two high quality plays in the Eagle Ford and Delaware Basin as well as enhance our future financial flexibility that would benefit us in light of the recent ExL Acquisition and related financings. There can be no assurance that we will complete any pending disposition, be able to sell our Niobrara assets, or divest any other assets in such time frame on acceptable terms or at all or receive any targeted aggregate gross proceeds.
Eleventh Amendment to the Credit Agreement
On November 3, 2017, we entered into an elevenththirteenth amendment to our credit agreement governing the revolving credit facility to, among other things, (i) establish the borrowing base at $900.0 million,$1.3 billion, with an elected commitment amount of $800.0 million,$1.1 billion, until the next redetermination thereof, (ii) reduce the applicable margins for Eurodollar loans from 1.50%-2.50% to 1.25%-2.25% and base rate loans from 0.50%-1.50% to 0.25%-1.25%, each depending on the level of facility usage and each subject to an increase of 0.25% for any period during which the general basket available for restricted payments from $50.0 millionratio of Total Debt to $75.0 millionEBITDA exceeds 3.00 to 1.00, (iii) amend the definition of Capital Leases, and (iii)(iv) amend certain other provisions, in each case as set forth therein. The calculation of the borrowing base was supported solely by the reserves of our Eagle Forddefinitions and Delaware Basin assets.provisions.

Results of Operations
Three Months Ended September 30, 20172018, Compared to the Three Months Ended September 30, 20162017
The following table summarizes total production volumes, daily production volumes, average realized prices and revenues for the three months ended September 30, 20172018 and 2016:2017:
  Three Months Ended
September 30,
 2017 Period
Compared to 2016 Period
  Three Months Ended September 30, 2018 Period
Compared to 2017 Period
 2017 2016 Increase (Decrease) % Increase (Decrease) 2018 2017 Increase (Decrease) % Increase (Decrease)
Total production volumes -                
Crude oil (MBbls) 3,211
 2,253
 958
 43% 3,755
 3,211
 544
 17%
NGLs (MBbls) 623
 435
 188
 43% 1,055
 623
 432
 69%
Natural gas (MMcf) 7,476
 6,372
 1,104
 17% 6,815
 7,476
 (661) (9%)
Total barrels of oil equivalent (MBoe) 5,080

3,750
 1,330
 35% 5,946

5,080
 866
 17%
                
Daily production volumes by product -                
Crude oil (Bbls/d) 34,903
 24,488
 10,415
 43% 40,813
 34,903
 5,910
 17%
NGLs (Bbls/d) 6,777
 4,730
 2,047
 43% 11,469
 6,777
 4,692
 69%
Natural gas (Mcf/d) 81,265
 69,262
 12,003
 17% 74,072
 81,265
 (7,193) (9%)
Total barrels of oil equivalent (Boe/d) 55,224
 40,762
 14,462
 35% 64,627
 55,224
 9,403
 17%
                
Daily production volumes by region (Boe/d) -                
Eagle Ford 39,002
 29,110
 9,892
 34% 39,024
 39,002
 22
 %
Delaware Basin 6,994
 1,344
 5,650
 420% 25,577
 6,994
 18,583
 266%
Niobrara 2,427
 2,576
 (149) (6%)
Marcellus 6,120
 6,811
 (691) (10%)
Utica and other 681
 921
 (240) (26%)
Other 26
 9,228
 (9,202) (100%)
Total barrels of oil equivalent (Boe/d) 55,224
 40,762
 14,462
 35% 64,627
 55,224
 9,403
 17%
                
Average realized prices -                
Crude oil ($ per Bbl) 
$47.37
 
$42.23
 
$5.14
 12% 
$67.78
 
$47.37
 
$20.41
 43%
NGLs ($ per Bbl) 20.01
 12.91
 7.10
 55% 32.04
 20.01
 12.03
 60%
Natural gas ($ per Mcf) 2.24
 1.63
 0.61
 37% 2.21
 2.24
 (0.03) (1%)
Total average realized price ($ per Boe) 
$35.68
 
$29.65
 
$6.03
 20% 
$51.02
 
$35.68
 
$15.34
 43%
                
Revenues (In thousands) -                
Crude oil 
$152,101
 
$95,154
 
$56,947
 60% 
$254,525
 
$152,101
 
$102,424
 67%
NGLs 12,467
 5,616
 6,851
 122% 33,798
 12,467
 21,331
 171%
Natural gas 16,711
 10,407
 6,304
 61% 15,052
 16,711
 (1,659) (10%)
Total revenues 
$181,279
 
$111,177
 
$70,102
 63% 
$303,375
 
$181,279
 
$122,096
 67%
Production volumes for the three months ended September 30, 20172018 were 55,22464,627 Boe/d, an increase of 35%17% from 40,76255,224 Boe/d for the same period in 2016.2017. The increase is primarily due to production from new wells in the Delaware Basin, primarily drilled on properties from the ExL Acquisition, as well as in Eagle Ford, partially offset by the divestitures in Utica and Delaware Basin and the addition of production from the Sanchez AcquisitionMarcellus in the fourth quarter of 20162017 and the ExL AcquisitionNiobrara and Eagle Ford in the

third first quarter of 2017.2018. Revenues for the three months ended September 30, 20172018 increased 63%67% to $181.3$303.4 million compared to $111.2$181.3 million for the same period in 20162017 primarily due to increased productionhigher crude oil prices and higher commodity prices.crude oil production.
Lease operating expenses for the three months ended September 30, 20172018 increased to $41.0 million ($6.90 per Boe) from $34.9 million ($6.86 per Boe) from $24.3 million ($6.48 per Boe) for the same period in 2016.2017. The increase in lease operating expenses is primarily due to costs associated with increased production. The increase in lease operating expense per Boe is primarily due to increased workover costs primarily on wellsprocessing fees for certain of our natural gas and NGL processing contracts that, effective January 1, 2018, are presented in lease operating expenses as a result of the adoption of ASC in 606. This more than offset a net decrease in lease operating expense per Boe related to the change in the proportion of production from properties acquired in the SanchezExL Acquisition, as well as to anwhich have lower operating costs per Boe than our other Delaware Basin and Eagle Ford properties, and the increased proportion of total production from crude oil properties, as a result of the divestiture in Marcellus in the fourth quarter of 2017, which have a higher per operating cost per Boe than natural gas properties.

Production taxes increased to $7.7$14.5 million (or 4.3%(4.8% of revenues) for the three months ended September 30, 20172018 from $4.9$7.7 million (or 4.4%(4.3% of revenues) for the same period in 20162017 primarily as a result of the increase in crude oil NGL, and natural gasNGL revenues. The decreaseincrease in production taxes as a percentage of revenues is primarily due to a benefitthe divestiture of substantially all of our assets in Marcellus in the thirdfourth quarter of 2017, of lower actualas our production taxes than previously estimated in the Niobrara.Marcellus was not subject to production taxes.
Ad valorem taxes increased to $1.7$2.6 million (0.9% of revenues) for the three months ended September 30, 20172018 from $1.4$1.7 million (1.0% of revenues) for the same period in 2016.2017. The increase in ad valorem taxes is due to new wells drilled in the Eagle Ford and Delaware Basin and higher property tax valuations as a result of the increase in 2016 and newcrude oil prices, partially offset by a reduction in ad valorem taxes resulting from the divestitures discussed above. The decrease in ad valorem taxes as a percentage of revenues is primarily due to the timing of when wells acquiredare included in the Sanchez Acquisitionad valorem tax assessment as wells drilled and producing during 2018 would not be included in December 2016.ad valorem tax assessment until 2019.
Depreciation, depletion and amortization (“DD&A”)&A expense for the third quarter of 20172018 increased $18.6$12.5 million to $67.6$80.1 million ($13.3013.47 per Boe) from the DD&A expense for the third quarter of 20162017 of $48.9$67.6 million ($13.0513.30 per Boe). The increase in DD&A expense is attributable to increased production and an increase in the DD&A rate per Boe. The increase in the DD&A rate per Boe is due primarily to increases in future development costs that occurred subsequent to the addition tothird quarter of 2017 as well as an increase in proved oil and gas properties related to the ExL Acquisition,as a result of our ongoing capital expenditure program, partially offset by the impairment of ourreduction in proved oil and gas properties recorded in the third quarter of 2016, reductions in estimated future development costs as a result of reduced service costs that occurredthe divestitures in Utica and Marcellus in the fourth quarter of 2016,2017 and the addition of crude oil reservesNiobrara and Eagle Ford in the fourthfirst quarter of 2016.2018 and an increase in proved oil and gas reserves. The components of our DD&A expense were as follows:
   Three Months Ended
September 30,
  2017 2016
  (In thousands)
DD&A of proved oil and gas properties 
$66,221
 
$47,702
Depreciation of other property and equipment 584
 656
Amortization of other assets 294
 251
Accretion of asset retirement obligations 465
 340
Total DD&A 
$67,564
 
$48,949
We did not recognize an impairment of proved oil and gas properties for the three months ended September 30, 2017. Primarily due to the decline in the 12-Month Average Realized Price of crude oil, we recognized an impairment of proved oil and gas properties for the three months ended September 30, 2016. Details of the 12-Month Average Realized Price of crude oil for the three months ended September 30, 2017 and 2016 and the impairment of proved oil and gas properties for the three months ended September 30, 2016 are summarized in the table below: 
   Three Months Ended
September 30,
  2017 2016
Impairment of proved oil and gas properties (in thousands) 
$—
 $105,057
Crude Oil 12-Month Average Realized Price ($/Bbl) - Beginning of period $46.80 $39.84
Crude Oil 12-Month Average Realized Price ($/Bbl) - End of period $47.74 $38.36
Crude Oil 12-Month Average Realized Price percentage increase (decrease) during period

 2% (4%)
   Three Months Ended September 30,
  2018 2017
  (In thousands)
DD&A of proved oil and gas properties 
$79,051
 
$66,221
Depreciation of other property and equipment 607
 584
Amortization of other assets 102
 294
Accretion of asset retirement obligations 348
 465
Total DD&A 
$80,108
 
$67,564
General and administrative expense, net decreased to $16.0$12.8 million for the three months ended September 30, 20172018 from $18.1$16.0 million for the corresponding period in 2016.2017. The decrease was primarily due to a decrease in stock-based compensation expense, net resulting fromas a decrease in stock appreciation rights outstanding during the three months ended September 30, 2017 due to exercises and expirations andresult of a larger decrease in the fair value of stock appreciation rights for the three months ended September 30, 20172018 as compared to the same period in 2016, partially offset by higher compensation costs for the three months ended September 30, 2017 as compared to the same period in 2016 resulting from an increase in personnel as a result of the ExL Acquisition as well as additional expenses related to a program we implemented to provide financial assistance to employees impacted by Hurricane Harvey.

2017.
We recorded a loss on derivatives, net of $24.4$55.4 million and a gain on derivatives, net of $11.7$24.4 million for the three months ended September 30, 20172018 and 2016,2017, respectively. The components of our (gain) loss on derivatives, net were as follows:
  Three Months Ended
September 30,
  Three Months Ended September 30,
 2017 2016 2018 2017
 (In thousands) (In thousands)
Crude oil derivative positions:        
(Gain) loss due to (downward) upward shift in the futures curve of forecasted crude oil prices during the period on derivative positions outstanding at the beginning of the period 
$7,567
 
($8,309)
Loss due to upward shift in the futures curve of forecasted crude oil prices during the period on derivative positions outstanding at the beginning of the period 
$34,282
 
$7,567
Loss due to new derivative positions executed during the period 842
 
 9,382
 842
Loss due to deferred premium obligations incurred 10,151
 55
 
 10,151
NGL derivative positions:    
Loss due to upward shift in the futures curve of forecasted NGL prices during the period on derivative positions outstanding at the beginning of the period 5,086
 
Natural gas derivative positions:        
Gain due to downward shift in the futures curve of forecasted natural gas prices during the period on derivative positions outstanding at the beginning of the period (2,183) (3,490) (192) (2,183)
Contingent ExL Payment    
Loss due to upward shift in the futures curve of forecasted crude oil prices from the closing date to the end of the period 8,000
 
(Gain) loss on derivatives, net 
$24,377
 
($11,744)
Contingent consideration arrangements:    
Net loss primarily due to upward shift in the futures curve of forecasted crude oil prices during the period 6,830
 8,000
Loss on derivatives, net 
$55,388
 
$24,377

Interest expense, net for the three months ended September 30, 20172018 was $20.7$15.4 million as compared to $21.2$20.7 million for the same period in 2016. An increase in2017. The decrease was primarily due to reduced interest expense as a result of the $250.0 million aggregate principal amountredemptions of our 8.25%the 7.50% Senior Notes that were issued in Julythe fourth quarter of 2017 and first quarter of 2018, The decrease was partially offset by increased borrowings and associated interest expense on our revolving credit facility infor the third quarter of 2017three months ended September 30, 2018 as compared to the third quarter of 2016 was more than offset by an increase in capitalized interest as a result of higher average balances of unevaluated leasehold and seismic costs for the third quarter of 2017 as compared to the third quarter of 2016, primarily due to the ExL Acquisition.three months ended September 30, 2017. The components of our interest expense, net were as follows:
  Three Months Ended
September 30,
  Three Months Ended September 30,
 2017 2016 2018 2017
 (In thousands) (In thousands)
Interest expense on Senior Notes 
$25,750
 
$21,454
 
$17,750
 
$25,750
Interest expense on revolving credit facility 1,969
 1,161
 5,092
 1,969
Amortization of premiums and debt issuance costs 1,116
 1,186
 956
 1,116
Other interest expense 293
 340
 124
 293
Interest capitalized (8,455) (2,951) (8,516) (8,455)
Interest expense, net 
$20,673
 
$21,190
 
$15,406
 
$20,673
The effective income tax rates for the third quarter of 2018 and 2017 were 1.1% and 20160.0%, respectively, which were 0.0% and 0.3%, respectively. This isnominal as a result of maintaining a full valuation allowance against our net deferred tax assets. The increase in the effective rate between the periods is due to $0.9 million of Texas franchise tax recognized for the three months ended September 30, 2018 due to an increase in the apportionment of income to the state of Texas as a result of our divestitures in the fourth quarter of 2017 and first quarter of 2018.
Throughout 2017 and the first nine months of 2018, we maintained a full valuation allowance against our deferred tax assets drivenbased on our conclusion, considering all available evidence (both positive and negative), that it was more likely than not that the deferred tax assets would not be realized. A significant item of objective negative evidence considered was the cumulative pre-tax loss incurred over the three-year period ended September 30, 2018, primarily by thedue to impairments of proved oil and gas properties we recognized beginning in the thirdfourth quarter of 2015 and continuing through the third quarterfirst three quarters of 2016. For2016, which limits our ability to consider subjective positive evidence, such as its projections of future taxable income.
We currently believes it is reasonably possible for us to achieve a three-year cumulative level of profitability within the threenext 12 months, ended September 30, 2017, asand considering the rebound in crude oil prices during 2018 and improved outlook for 2019, would enhance our ability to conclude that it is more likely than not that the deferred tax assets would be realized and support a resultrelease of current quarter activity, a partialportion or substantially all of the valuation allowance. A release fromof the valuation allowance was recorded to bringwould result in the netrecognition of an increase in deferred tax assets to zero. Forand an income tax benefit in the three months ended September 30, 2016, we recorded an additional valuation allowance primarily as a resultperiod in which the release occurs, although the exact timing and amount of the impairmentsrelease is subject to change based on numerous factors, including our projections of proved oil and gas properties described above.future taxable income, which we continue to assess based on available information each reporting period.
For the three months ended September 30, 2018 and 2017, we declared and paid cash dividends of $4.5 million and $2.2 million, of dividends, in cash, to the holders of record of therespectively, on our Preferred Stock on September 1, 2017 for the period from issuance through September 15, 2017, which reduced net income to compute net income attributable to common shareholders.Stock.

Results of Operations
Nine Months Ended September 30, 2017,2018, Compared to the Nine Months Ended September 30, 20162017
The following table summarizes total production volumes, daily production volumes, average realized prices and revenues for the nine months ended September 30, 20172018 and 2016:2017:
 Nine Months Ended
September 30,
 2017 Period
Compared to 2016 Period
  Nine Months Ended September 30, 2018 Period
Compared to 2017 Period
 2017 2016 Increase (Decrease) % Increase (Decrease) 2018 2017 Increase (Decrease) % Increase (Decrease)
Total production volumes -                
Crude oil (MBbls) 8,867
 6,780
 2,087
 31% 10,272
 8,867
 1,405
 16%
NGLs (MBbls) 1,482
 1,324
 158
 12% 2,648
 1,482
 1,166
 79%
Natural gas (MMcf) 21,279
 19,502
 1,777
 9% 16,996
 21,279
 (4,283) (20%)
Total barrels of oil equivalent (MBoe) 13,896
 11,354
 2,542
 22% 15,753
 13,896
 1,857
 13%
                
Daily production volumes by product -                
Crude oil (Bbls/d) 32,481
 24,744
 7,737
 31% 37,628
 32,481
 5,147
 16%
NGLs (Bbls/d) 5,430
 4,831
 599
 12% 9,699
 5,430
 4,269
 79%
Natural gas (Mcf/d) 77,946
 71,174
 6,772
 10% 62,258
 77,946
 (15,688) (20%)
Total barrels of oil equivalent (Boe/d) 50,902
 41,438
 9,464
 23% 57,703
 50,902
 6,801
 13%
                
Daily production volumes by region (Boe/d) -                
Eagle Ford 36,569
 30,101
 6,468
 21% 37,241
 36,569
 672
 2%
Delaware Basin 3,871
 660
 3,211
 487% 20,236
 3,871
 16,365
 423%
Niobrara 2,627
 2,845
 (218) (8%)
Marcellus 7,136
 6,451
 685
 11%
Utica and other 699
 1,381
 (682) (49%)
Other 226
 10,462
 (10,236) (98%)
Total barrels of oil equivalent (Boe/d) 50,902
 41,438
 9,464
 23% 57,703
 50,902
 6,801
 13%
                
Average realized prices -                
Crude oil ($ per Bbl) 
$47.70
 
$37.57
 
$10.13
 27% 
$66.13
 
$47.70
 
$18.43
 39%
NGLs ($ per Bbl) 18.68
 11.42
 7.26
 64% 27.18
 18.68
 8.50
 46%
Natural gas ($ per Mcf) 2.28
 1.53
 0.75
 49% 2.44
 2.28
 0.16
 7%
Total average realized price ($ per Boe) 
$35.92
 
$26.40
 
$9.52
 36% 
$50.32
 
$35.92
 
$14.40
 40%
                
Revenues (In thousands) -                
Crude oil 
$422,999
 
$254,758
 
$168,241
 66% 
$679,242
 
$422,999
 
$256,243
 61%
NGLs 27,678
 15,119
 12,559
 83% 71,969
 27,678
 44,291
 160%
Natural gas 48,440
 29,886
 18,554
 62% 41,417
 48,440
 (7,023) (14%)
Total revenues 
$499,117
 
$299,763
 
$199,354
 67% 
$792,628
 
$499,117
 
$293,511
 59%
Production volumes for the nine months ended September 30, 20172018 were 50,90257,703 Boe/d, an increase of 23%13% from 41,43850,902 Boe/d for the same period in 2016.2017. The increase is primarily due to production from new wells in the Eagle Ford and Delaware Basin, and the addition of productionprimarily drilled on properties from the Sanchez Acquisition in late 2016 and the ExL Acquisition, as well as in Eagle Ford, partially offset by the divestitures in Utica and Marcellus in the thirdfourth quarter of 2017 partially offset by normal production declines.and Niobrara and Eagle Ford in the first quarter of 2018. Revenues for the nine months ended September 30, 20172018 increased 67%59% to $499.1$792.6 million from $299.8$499.1 million for the same period in 20162017 primarily due to increased productionhigher crude oil prices and higher commodity prices.crude oil production.
Lease operating expenses for the nine months ended September 30, 20172018 increased to $115.4 million ($7.33 per Boe) from $100.8 million ($7.25 per Boe) from $71.1 million ($6.26 per Boe) for the same period in 2016.2017. The increase in lease operating expenses is primarily due to costs associated with increased production and increased workover costs primarily on wells recently acquired in the Sanchez Acquisition.production. The increase in lease operating expense per Boe is primarily due to processing fees for certain of our natural gas and NGL processing contracts that, effective January 1, 2018, are presented in lease operating expenses as a result of the workover costs described above as well asadoption of ASC in 606. Additionally, there was a net increase in lease operating expense per Boe related to anthe increased proportion of total production from crude oil properties, which have a higher operating cost per Boe than natural gas properties, as a result of the divestiture in Marcellus in the fourth quarter of 2017 and the increased proportion of production from properties acquired in the ExL Acquisition, which have lower operating costs per Boe than our other Delaware Basin and Eagle Ford properties.
Production taxes increased to $21.1$37.6 million (or 4.2%4.7% of revenues) for the nine months ended September 30, 20172018 from $12.9$21.1 million (or 4.3%4.2% of revenues) for the same period in 20162017 primarily as a result of the increase in crude oil and NGL and natural gasrevenues. The

revenues. The decreaseincrease in production taxes as a percentage of revenues is primarily due to a benefitthe divestiture of substantially all of our assets in Marcellus in the nine months ended September 30,fourth quarter of 2017, of lower actualas our production taxes than previously estimated in Niobrara.Marcellus was not subject to production taxes.
Ad valorem taxes increased to $5.8$8.2 million (1.0% of revenues) for the nine months ended September 30, 20172018 from $4.0$5.8 million (1.2% of revenues) for the same period in 2016.2017. The increase in ad valorem taxes is due to new wells drilled in the Eagle Ford and Delaware Basin in 2016 and new wells drilled or acquired in the Sanchez AcquisitionDelaware Basin and higher property tax valuations as a result of the increase in December 2016.crude oil prices, partially offset by a reduction in ad valorem taxes resulting from the divestitures discussed above. The decrease in ad valorem taxes as a percentage of revenues is primarily due to the timing of when wells are included in the ad valorem tax assessment as wells drilled and producing during 2018 would not be included in ad valorem tax assessment until 2019.
DD&A expense for the nine months ended September 30, 20172018 increased $20.5$36.0 million to $217.0 million ($13.78 per Boe) from $181.0 million ($13.03 per Boe) from $160.5 million ($14.14 per Boe) for the same period in 2016.2017. The increase in DD&A expense is attributable to increased production partially offset by the decreaseas well as an increase in the DD&A rate per Boe. The decreaseincrease in the DD&A rate per Boe is due primarily to impairments of our proved oil and gas properties recorded during the nine months ended September 30, 2016, reductionsincreases in estimated future development costs as a result of reduced service costs that occurred insubsequent to the fourththird quarter of 2016, and the addition of crude oil reserves in the fourth quarter of 2016, partially offset by the allocation2017 as well as an increase to proved oil and gas properties related toas a result of our ongoing capital expenditure program, partially offset by the ExL Acquisition.reduction in proved oil and gas properties as a result of the divestitures in Utica and Marcellus in the fourth quarter of 2017 and Niobrara and Eagle Ford in the first quarter of 2018 and an increase in proved oil and gas reserves. The components of our DD&A expense were as follows:
  Nine Months Ended
September 30,
  2017 2016
  (In thousands)
DD&A of proved oil and gas properties 
$176,876
 
$156,595
Depreciation of other property and equipment 1,842
 1,994
Amortization of other assets 966
 892
Accretion of asset retirement obligations 1,334
 1,011
Total DD&A 
$181,018
 
$160,492
We did not recognize impairments of proved oil and gas properties for the nine months ended September 30, 2017. Primarily due to declines in the 12-Month Average Realized Price of crude oil, we recognized impairments of proved oil and gas properties for the nine months ended September 30, 2016. Details of the 12-Month Average Realized Price of crude oil for the nine months ended September 30, 2017 and 2016 and impairments of proved oil and gas properties for the nine months ended September 30, 2016 are summarized in the table below: 
  Nine Months Ended
September 30,
  2017 2016
Impairments of proved oil and gas properties (in thousands) 
$—
 $576,540
Crude Oil 12-Month Average Realized Price ($/Bbl) - Beginning of period $39.60 $47.24
Crude Oil 12-Month Average Realized Price ($/Bbl) - End of period $47.74 $38.36
Crude Oil 12-Month Average Realized Price percentage increase (decrease) during period

 21% (19%)
   Nine Months Ended September 30,
  2018 2017
  (In thousands)
DD&A of proved oil and gas properties 
$213,727
 
$176,876
Depreciation of other property and equipment 1,801
 1,842
Amortization of other assets 476
 966
Accretion of asset retirement obligations 1,001
 1,334
Total DD&A 
$217,005
 
$181,018
General and administrative expense, net decreasedincreased to $49.3$58.4 million for the nine months ended September 30, 20172018 from $59.0$49.3 million for the same period in 2016.2017. The decreaseincrease was primarily due to a decreasean increase in stock-based compensation expense, net as a result of a decreasean increase in the fair value of stock appreciation rights for the nine months ended September 30, 20172018 compared to an increasea decrease in fair value for the nine months ended September 30, 2016, partially offset by2017 as well as an increase in personnel costs and higher annual bonuses awarded in the first quarter of 20172018 compared to the first quarter of 2016.

2017.
We recorded a loss on derivatives, net of $152.7 million and a gain on derivatives, net of $27.0 million and a loss on derivatives, net of $29.9 million for the nine months ended September 30, 20172018 and 2016,2017, respectively. The components of our (gain) loss on derivatives, net were as follows:
 Nine Months Ended
September 30,
  Nine Months Ended September 30,
 2017 2016 2018 2017
 (In thousands) (In thousands)
Crude oil derivative positions:        
(Gain) loss due to (downward) upward shift in the futures curve of forecasted crude oil prices during the period on derivative positions outstanding at the beginning of the period

 
($28,334) 
$10,209
 
$113,282
 
($28,334)
(Gain) loss due to new derivative positions executed during the period (11,420) 1,797
 13,330
 (11,420)
Loss due to deferred premium obligations incurred 17,652
 5,667
 
 17,652
NGL derivative positions:    
Loss due to upward shift in the futures curve of forecasted NGL prices during the period on derivative positions outstanding at the beginning of the period 9,885
 
Natural gas derivative positions:        
Gain due to downward shift in the futures curve of forecasted natural gas prices during the period on derivative positions outstanding at the beginning of the period (12,902) 
 (3,152) (12,902)
Loss due to new derivative positions executed during the period 
 12,167
 68
 
Loss due to deferred premium obligations incurred 
 98
Contingent ExL Payment    
Loss due to upward shift in the futures curve of forecasted crude oil prices from the closing date to the end of the period 8,000
 
Contingent consideration arrangements:    
Net loss primarily due to upward shift in the futures curve of forecasted crude oil prices during the period 19,285
 8,000
(Gain) loss on derivatives, net 
($27,004) 
$29,938
 
$152,698
 
($27,004)
Interest expense, net for the nine months ended September 30, 20172018 was $62.4$46.5 million as compared to $58.9$62.4 million for the same period in 2016.2017. The increasedecrease was due primarily to thereduced interest expense as a result of the redemptions of the 7.50% Senior Notes in the fourth quarter of 2017 and first quarter of 2018 as well as an increase in capitalized interest as a result of higher

average balances of unevaluated leasehold and seismic costs over the nine months ended September 30, 2018 as compared to the nine months ended September 30, 2017, primarily as a result of the ExL Acquisition in the third quarter of 2017. The decrease was partially offset by interest expense on the $250.0 million aggregate principal amount of our 8.25% Senior Notes that were issued in Julythe third quarter of 2017 and an increase inincreased borrowings and associated interest expense on our revolving credit facility as a result of increased borrowings for the nine months ended September 30, 20172018 as compared to the nine months ended September 30, 2016, partially offset by an increase in capitalized interest as a result of higher average balances of unevaluated leasehold and seismic costs for the nine months ended September 30, 2017 as compared to the nine months ended September 30, 2016, primarily as a result of the ExL Acquisition.2017. The components of our interest expense, net were as follows:
 Nine Months Ended
September 30,
  Nine Months Ended September 30,
 2017 2016 2018 2017
 (In thousands) (In thousands)
Interest expense on Senior Notes 
$68,660
 
$64,364
 
$57,003
 
$68,660
Interest expense on revolving credit facility 5,656
 2,827
 13,741
 5,656
Amortization of debt issuance costs, premiums, and discounts 3,381
 4,296
 2,996
 3,381
Other interest expense 876
 854
 394
 876
Capitalized interest (16,223) (13,428) (27,612) (16,223)
Interest expense, net 
$62,350
 
$58,913
 
$46,522
 
$62,350
As a result of our redemption of $320.0 million aggregate principal amount of our 7.50% Senior Notes, we recorded a loss on extinguishment of debt of $8.7 million for the nine months ended September 30, 2018, which included redemption premiums of $6.0 million paid to redeem the notes and non-cash charges of $2.7 million attributable to the write-off of unamortized premium and debt issuance costs.
The effective income tax rate for the nine months ended September 30, 2018 and 2017 was 1.2% and 2016 was 0.0%. This is, respectively, which were nominal as a result of maintaining a full valuation allowance against our net deferred tax assets. The increase in the effective rate between the periods is due to $1.7 million of Texas franchise tax recognized for the nine months ended September 30, 2018 due to an increase in the apportionment of income to the state of Texas as a result of our divestitures in the fourth quarter of 2017 and first quarter of 2018.
Throughout 2017 and the first nine months of 2018, we maintained a full valuation allowance against our deferred tax assets driven bybased on our conclusion, considering all available evidence (both positive and negative), that it was more likely than not that the deferred tax assets would not be realized. A significant item of objective negative evidence considered was the cumulative pre-tax loss incurred over the three-year period ended September 30, 2018, primarily due to impairments of proved oil and gas properties we recognized beginning in the thirdfourth quarter of 2015 and continuing through the third quarterfirst three quarters of 2016. For2016, which limits our ability to consider subjective positive evidence, such as its projections of future taxable income.
We currently believe it is reasonably possible for us to achieve a three-year cumulative level of profitability within the ninenext 12 months, ended September 30, 2017, asand considering the rebound in crude oil prices during 2018 and improved outlook for 2019, would enhance our ability to conclude that it is more likely than not that the deferred tax assets would be realized and support a resultrelease of current year activity, a partialportion or substantially all of the valuation allowance. A release fromof the valuation allowance was needed to bringwould result in the netrecognition of an increase in deferred tax assets and an income tax benefit in the period in which the release occurs, although the exact timing and amount of the release is subject to zero. For the nine months ended September 30, 2017,change based on numerous factors, including our projections of future taxable income, which we recorded additional valuation allowance primarily as a result of impairments of proved oil and gas properties described above.continue to assess based on available information each reporting period.
For the nine months ended September 30, 2018 and 2017, we declared and paid cash dividends of $13.8 million and $2.2 million, respectively, on our Preferred Stock.
During the first quarter of dividends, in cash,2018, we redeemed 50,000 shares of Preferred Stock, representing 20% of the issued and outstanding Preferred Stock, for $50.5 million, consisting of the $50.0 million redemption price and $0.5 million accrued and unpaid dividends. We recognized a $7.1 million loss on the redemption due to the holdersexcess of recordthe $50.0 million redemption price over the $42.9 million redemption date carrying value of the Preferred Stock on September 1, 2017 for the period from issuance through September 15, 2017, which reduced net income to compute net income attributable to common shareholders.Stock.

Liquidity and Capital Resources
20172018 Drilling, Completion, and CompletionInfrastructure Capital Expenditure Plan and Funding Strategy. In November 2017, our 2017Our 2018 drilling, completion, and completioninfrastructure capital expenditure plan was increased to $600.0remains unchanged at $800.0 million to $620.0 million from the previous range of $590.0 million to $610.0 million, due to updated plans in the Delaware Basin as a result of the ExL Acquisition, as well as an increase in non-operated activity on our acreage in the Delaware Basin and Niobrara.$825.0 million. We currently intend to finance the remainder of our 20172018 drilling, completion, and completioninfrastructure capital expenditure plan primarily from the sources described below under “—Sources and Uses of Cash.” Our capital program could vary depending upon various factors, including, but not limited to, the availability of drilling rigs and completion crews, the cost of completion services, acquisitions and divestitures of oil and gas properties, land and industry partner issues, our available cash flow and financing, success of drilling programs, weather

delays, commodity prices, market conditions, the acquisition of leases with drilling commitments and other factors. BelowThe following is a summary of our capital expenditures for the three months ended March 31, 2017, June 30, 2017 and September 30, 2017 and for the nine months ended September 30, 20172018:
Three Months Ended Nine Months EndedThree Months Ended Nine Months Ended
March 31, 2017 June 30, 2017 September 30, 2017 September 30, 2017March 31, 2018 June 30, 2018 September 30, 2018 September 30, 2018
(In thousands)(In thousands)
Drilling and completion       
Drilling, completion, and infrastructure       
Eagle Ford
$111,472
 
$129,933
 
$122,281
 
$363,686

$135,677
 
$101,249
 
$149,386
 
$386,312
Delaware Basin10,360
 11,727
 36,055
 58,142
73,892
 116,743
 91,761
 282,396
All other regions6,412
 6,734
 6,698
 19,844
284
 
 
 284
Total drilling and completion128,244
 148,394
 165,034
 441,672
Total drilling, completion, and
infrastructure
209,853
 217,992
 241,147
 668,992
Leasehold and seismic14,516
 34,447
 11,819
 60,782
5,520
 6,129
 6,668
 18,317
Total Capital Expenditures (1)

$142,760
 
$182,841
 
$176,853
 
$502,454
Total capital expenditures (1)

$215,373
 
$224,121
 
$247,815
 
$687,309
 
(1)Capital expenditures exclude acquisitions of oil and gas properties, capitalized general and administrative expense, interest expense and asset retirement obligations.costs.
Sources and Uses of Cash. Our primary use of cash is related to our drilling, completion and completioninfrastructure capital expenditures and, to a lesser extent, our leasehold and seismic capital expenditures. For the nine months ended September 30, 2017,2018, we funded our capital expenditures primarily with cash provided by operations and borrowings under our revolving credit facility. Potential sources of future liquidity include the following:
Cash provided by operations. Cash flows from operations are highly dependent on crude oil prices. As such, we hedge a portion of our forecasted production to reduce our exposure to commodity price volatility in order to achieve a more predictable level of cash flows.
Borrowings under revolving credit facility. As of November 3, 2017,2, 2018, our revolving credit facility had a borrowing base of 900.0 million,$1.3 billion, with an elected commitment amount of $800.0$1.1 billion, with $618.0 million with $297.1 millionof borrowings outstanding and $0.4 million in letters of credit issued, which reduce the amounts available under our revolving credit facility. As a result of the Fall 2017 borrowing base redetermination, the borrowing base was established at $900.0 million, with an elected commitment amount of $800.0 million, until the next redetermination thereof. The calculation of the Fall 2017 borrowing base was supported solely by the reserves of our Eagle Ford and Delaware Basin assets.outstanding. The amount we are able to borrow is subject to compliance with the financial covenants and other provisions of the credit agreement governing our revolving credit facility. See “Note 6. Long-Term Debt” for details of the ninth and tenth amendments and “Note 14. Subsequent Events” for details of the recent eleventh amendment to the credit agreement governing our revolving credit facility.thirteenth amendment.
Securities offerings. As situations or conditions arise, we may choose to issue debt, equity or other securities to supplement our cash flows. However, we may not be able to obtain such financing on terms that are acceptable to us, or at all. See “Note 6. Long-term Debt” for details of the issuance of the 8.25% Senior Notes, “Note 8. Preferred Stock” for details of the Preferred Stock issuance and “Note 9. Shareholders’ Equity and Stock-Based Compensation” for details ofregarding the recent common stock offering.
Divestitures. We may consider divesting certain properties or assets that are not part of our core business or are no longer deemed essential to our future growth, provided we are able to divest such assets on terms that are acceptable to us. See “—General Overview—Potential Divestitures” above“Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details.
Joint ventures. Joint ventures with third parties through which such third parties fund a portion of our exploration activities to earn an interest in our exploration acreage or purchase a portion of interests, or both.

Overview of Cash Flow Activities. Net cash provided by operating activities was $280.6$465.3 million and $197.8$280.6 million for the nine months ended September 30, 20172018 and 2016,2017, respectively. The changeincrease was driven primarily by an increase in revenues as a result of higher production and commoditycrude oil prices and a decrease in working capital requirements,higher crude oil production, partially offset by a decreasean increase in the net cash received frompaid for derivative settlements and an increase in operating expenses and cash general and administrative expense.
Net cash used in investing activities was $1.1 billion and $331.6decreased to $309.0 million for the nine months ended September 30, 2017 and 2016, respectively. The change2018, from $1,105.0 million for the corresponding period in 2017. This was due primarily to a decrease in cash paidpayments for the ExL Acquisition, increased capital expenditures, and cash paid for the Sanchez Acquisition in January and April 2017 for leases that were not conveyed in conjunction with the initial closing in December 2016, partially offset by the deposit received in connection with the pending divestiture of substantially all of our assets in the Utica Shale and increased proceeds from divestitures of oil and gas properties. The divestituresacquisitions of oil and gas properties, as well as cash received from the divestitures in 2017 were primarily related to the divestitureNiobrara and Eagle Ford in early 2018, partially offset by an increase in capital expenditures as a result of a small undeveloped acreage positionour ongoing drilling, completion, and infrastructure activity in Eagle Ford and the Delaware Basin for net proceeds of $15.3 million.Basin.
Net cash provided byused in financing activities was $825.3 million and $94.0$163.5 million for the nine months ended September 30, 2018 compared to net cash provided by financing activities for the nine months ended September 30, 2017 and 2016, respectively.of $825.3 million. The increasechange was primarily due to net proceeds related topayments for the issuanceredemptions of the 8.25%our 7.50% Senior Notes the sale ofand Preferred Stock, and the sale of common stock, and increaseddecreased borrowings, net of repayments under our revolving credit facility, in 2017 as compared to 2016, partially offsetdecreased cash provided by the issuance of senior notes and preferred stock, and increased debt issuance costs related to the amendments to the credit agreement governing the revolving credit facility andcash dividends paid on the Preferred Stock.

Liquidity/Cash Flow Outlook. Economic downturns may adversely affect our ability to access capital markets in the future. Cash flows from operations are primarily driven by crude oil production, crude oil prices, and settlements of our crude oil derivatives. We currently believe that cash flows from operations and borrowings under our revolving credit facility will provide adequate financial flexibility and will be sufficient to fund our immediate cash flow requirements.
Revolving credit facility. The borrowing base under our revolving credit facility is affected by assumptions of the administrative agent with respect to, among other things, crude oil and, to a lesser extent, natural gas prices. Our borrowing base may decrease if our administrative agent reduces the crude oil and natural gas prices from those used to determine our existing borrowing base. See “—Sources and Uses of Cash—Borrowings under our revolving credit facility” and “—Financing Arrangements—Senior Secured Revolving Credit Facility” for further details of our revolving credit facility.
Contingent consideration.consideration arrangements. In connection withAs part of the ExL Acquisition, as well as in each of the divestitures of our assets in Niobrara, Marcellus, and Utica, we agreed to a contingent payment of $50.0 million per year for each of the years of 2018 through 2021 with a cap of $125.0 million. In connection with the sale of our Utica Shale assets, we could receive contingent consideration of $5.0 million per year for each of the years of 2018 through 2020 with a cap of $15.0 million.arrangements, where we will receive or be required to pay certain amounts if commodity prices are greater than specified thresholds. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties”10. Derivative Instruments” for further details of theeach of these contingent consideration associated with the ExL Acquisitionarrangements and Utica Shale assets. In connection with the sale of our Marcellus Shale assets, we could receive contingent consideration of $3.0 million per year“Item 3. Quantitative and Qualitative Disclosures About Market Risk” for each of the years of 2018 through 2020 with a cap of $7.5 million. See “Note 14. Subsequent Events” for further details of the sensitivities to commodity price for each contingent consideration associated with the Marcellus Shale assets.arrangement.
Hedging.Commodity derivative instruments. To manage our exposureWe use commodity derivative instruments to mitigate the effects of commodity price risk and to provide a level of certainty in the cash flows to support our drilling and completion capital expenditure plan, we hedgevolatility for a portion of our forecasted production.sales of production and achieve a more predictable level of cash flow.
As of November 6, 2017,2, 2018, we had the following outstanding commodity derivative positionsinstruments at weighted average contract volumes and prices:
Crude Oil Fixed Price Swaps
Period Volumes (in Bbls/d) NYMEX Price ($/Bbl)
Q4 2017 15,000
 
$53.44
FY 2018 6,000
 
$49.55
Crude Oil Basis Swaps
Commodity Period Type of Contract Index 
Volumes
(Bbls
per day)
 
Fixed Price
($ per
Bbl)
 
Sub-Floor Price
($ per
Bbl)
 
Floor Price
($ per
Bbl)
 
Ceiling Price
($ per
Bbl)
 
Fixed
Price
Differential
($ per
Bbl)
Crude oil 4Q18 Price Swaps NYMEX WTI 6,000
 
$49.55
 
 
 
 
Crude oil 4Q18 Three-Way Collars NYMEX WTI 24,000
 
 
$39.38
 
$49.06
 
$60.14
 
Crude oil 4Q18 Basis Swaps LLS-WTI Cushing 18,000
 
 
 
 
 
$5.11
Crude oil 4Q18 Basis Swaps WTI Midland-WTI Cushing 6,000
 
 
 
 
 
($0.10)
Crude oil 4Q18 Sold Call Options NYMEX WTI 3,388
 
 
 
 
$71.33
 
                   
Crude oil 2019 Three-Way Collars NYMEX WTI 27,000
 
 
$41.67
 
$50.96
 
$73.40
 
Crude oil 2019 Basis Swaps LLS-WTI Cushing 4,000
 
 
 
 
 
$4.87
Crude oil 2019 Basis Swaps WTI Midland-WTI Cushing 7,389
 
 
 
 
 
($4.82)
Crude oil 2019 Sold Call Options NYMEX WTI 3,875
 
 
 
 
$73.66
 
                   
Crude oil 2020 Basis Swaps WTI Midland-WTI Cushing 13,000
 
 
 
 
 
($1.27)
Crude oil 2020 Sold Call Options NYMEX WTI 4,575
 
 
 
 
$75.98
 
                   
Crude oil 2021 Basis Swaps WTI Midland-WTI Cushing 6,000
 
 
 
 
 
$0.03
Period Volumes (in Bbls/d) LLS-NYMEX Price Differential ($/Bbl)
December 2017 15,000
 
$4.13
FY 2018 6,000
 
$2.91
Commodity Period Type of Contract Index 
Volumes
(Bbls
per day)
 
Fixed Price
($ per
Bbl)
 
Sub-Floor Price
($ per
Bbl)
 
Floor Price
($ per
Bbl)
 
Ceiling Price
($ per
Bbl)
 
Fixed
Price
Differential
($ per
Bbl)
NGLs 4Q18 Price Swaps OPIS-Ethane 2,200
 
$12.01
 
 
 
 
NGLs 4Q18 Price Swaps OPIS-Propane 1,500
 
$34.23
 
 
 
 
NGLs 4Q18 Price Swaps OPIS-Butane 200
 
$38.85
 
 
 
 
NGLs 4Q18 Price Swaps OPIS-Isobutane 600
 
$38.98
 
 
 
 
NGLs 4Q18 Price Swaps OPIS-Natural Gasoline 600
 
$55.23
 
 
 
 

Period Volumes (in Bbls/d) Midland-NYMEX Price Differential ($/Bbl)
FY 2018 6,000
 
($0.10)


Crude Oil Three-Way Collars
    NYMEX Prices
Period 
Volumes
(in Bbls/d)
 
Sub-Floor Price
($/Bbl)
 
Floor Price
($/Bbl)
 
Ceiling Price
($/Bbl)
FY 2018 24,000
 
$39.38
 
$49.06
 
$60.14
FY 2019 12,000
 
$40.00
 
$48.40
 
$60.29
Crude Oil Net Sold Call Options
Period Volumes (in Bbls/d) NYMEX Ceiling Price ($/Bbl)
FY 2018 3,388
 
$71.33
FY 2019 3,875
 
$73.66
FY 2020 4,575
 
$75.98
Natural Gas Fixed Price Swaps
Period Volumes (in MMBtu/d) NYMEX Price ($/MMBtu)
Q4 2017 20,000
 
$3.30
Natural Gas Sold Call Options
Period Volumes (in MMBtu/d) NYMEX Ceiling Price ($/MMBtu)
Q4 2017 33,000
 
$3.00
FY 2018 33,000
 
$3.25
FY 2019 33,000
 
$3.25
FY 2020 33,000
 
$3.50
Commodity Period Type of Contract Index 
Volumes
(MMBtu
per day)
 
Fixed
Price
($ per
MMBtu)
 
Sub-Floor Price
($ per
MMBtu)
 
Floor Price
($ per
MMBtu)
 
Ceiling Price
($ per
MMBtu)
 
Fixed
Price
Differential
($ per
MMBtu)
Natural gas 4Q18 Price Swaps NYMEX Henry Hub 25,000
 
$3.01
 
 
 
 
Natural gas 4Q18 Sold Call Options NYMEX Henry Hub 33,000
 
 
 
 
$3.25
 
                   
Natural gas 2019 Sold Call Options NYMEX Henry Hub 33,000
 
 
 
 
$3.25
 
                   
Natural gas 2020 Sold Call Options NYMEX Henry Hub 33,000
 
 
 
 
$3.50
 
Based on existing market conditions and our expected liquidity needs, among other factors, we may use a portion of our cash flows from operations, proceeds from divestitures, securities offerings or borrowings to reduce debt or Preferred Stock prior to scheduled maturities through debt or Preferred Stock repurchases, either in the open market or in privately negotiated transactions, through debt or Preferred Stock redemptions or tender offers, or through repayments of bank borrowings. See “Note 14. Subsequent Events” for details of the notice of conditional redemption for the remaining $130.0 million aggregate principal amount of outstanding 7.50% Senior Notes.

Contractual Obligations
The following table sets forth estimates of our contractual obligations as of September 30, 20172018 (in thousands):
October -
December
2017
 2018 2019 2020 2021 2022 2023 and Thereafter TotalOctober - December 2018 2019 2020 2021 2022 2023 and Thereafter Total
Long-term debt (1)

$—
 
$—
 
$—
 
$600,000
 
$—
 
$215,600
 
$904,425
 
$1,720,025

$—
 
$—
 
$130,000
 
$—
 
$309,837
 
$900,000
 
$1,339,837
Cash interest on senior notes and other long-term debt (2)
20,409
 106,444
 106,444
 106,444
 61,444
 61,444
 83,236
 545,865
Cash interest on senior notes (2)
20,313
 71,000
 71,000
 61,250
 61,250
 82,188
 367,001
Cash interest and commitment fees on revolving credit facility (3)
2,463
 9,639
 9,639
 9,639
 9,639
 3,320
 
 44,339
3,637
 14,233
 14,233
 14,233
 4,903
 
 51,239
Capital leases464
 1,823
 1,800
 1,050
 
 
 
 5,137
450
 1,800
 1,050
 
 
 
 3,300
Operating leases1,260
 4,939
 4,799
 4,597
 4,450
 1,854
 
 21,899
1,158
 4,500
 4,219
 3,702
 3,639
 24,658
 41,876
Drilling rig contracts (4)
11,006
 23,170
 8,881
 
 
 
 
 43,057
12,412
 35,541
 15,932
 792
 
 
 64,677
Delivery commitments (5)
3,503
 8,615
 7,301
 4,829
 3,684
 282
 26
 28,240
938
 3,726
 2,807
 2,487
 30
 26
 10,014
Asset retirement obligations and other (6)
884
 1,765
 429
 378
 129
 261
 23,404
 27,250
Total Contractual Obligations
$39,989
 
$156,395
 
$139,293
 
$726,937
 
$79,346
 
$282,761
 
$1,011,091
 
$2,435,812
Produced water disposal commitments (6)
3,331
 21,336
 21,443
 21,445
 21,501
 17,678
 106,734
Asset retirement obligations and other (7)
633
 2,853
 910
 377
 244
 16,499
 21,516
Total Contractual Obligations (8)

$42,872
 
$154,989
 
$261,594
 
$104,286
 
$401,404
 
$1,041,049
 
$2,006,194
 
(1)Long-term debt consists of the principal amounts of the 7.50% Senior Notes due 2020, the 6.25% Senior Notes due 2023, the 8.25% Senior Notes due 2025, other long-term debt due 2028, and borrowings outstanding under our revolving credit facility which matures in 2022 (subject to a springing maturity date of June 15, 2020 if the 7.50% Senior Notes have not been redeemed or refinanced on or prior to such time). Subsequent to September 30, 2018, we delivered a notice of conditional redemption to the trustee for our 7.50% Senior Notes to call for redemption the remaining $130.0 million aggregate principal amount of our outstanding 7.50% Senior Notes due 2020, which was satisfied on October 29, 2018 in connection with entering into the thirteenth amendment to our credit agreement governing our revolving credit facility. See “Note 14. Subsequent Events” for further details.
(2)Cash interest on senior notes and other long-term debt includes cash payments for interest on the 7.50% Senior Notes due 2020, the 6.25% Senior Notes due 2023, and the 8.25% Senior Notes due 2025 and other long-term debt due 2028.2025.
(3)Cash interest on our revolving credit facility was calculated using the weighted average interest rate of the outstanding borrowings under the revolving credit facility as of September 30, 20172018 of 3.45%3.87%. Commitment fees on our revolving credit facility were calculated based on the unused portion of lender commitments as of September 30, 2017,2018, at the applicable commitment fee rate of 0.375%.
(4)Drilling rig contracts represent gross contractual obligations and accordingly, other joint owners in the properties operated by us will generally be billed for their working interest share of such costs.
(5)Delivery commitments represent contractual obligations we have entered into for certain gathering, processing and transportation throughput commitments, some ofservice agreements which require delivery of a minimum volumevolumes of natural gas and NGLs. We may incur volume deficiency fees from time to time if we elect to voluntarily curtail production due to market or operational considerations.be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any natural gas and NGLs.gas.
(6)Produced water disposal commitments represent contractual obligations we have entered into for certain service agreements which require minimum volumes of produced water to be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any produced water.
(7)
Asset retirement obligations and other are based on estimates and assumptions that affect the reported amounts as of September 30, 20172018. Certain of such estimates and assumptions are inherently unpredictable and will differ from actual results.
(8)In connection with the ExL Acquisition, we have agreed to a contingent payment of $50.0 million per year if crude oil prices exceed specified thresholds for each of the years of 2018 through 2021 with a cap of $125.0 million, which is not included in the table above.
Financing Arrangements
Senior Secured Revolving Credit Facility
We have a senior secured revolving credit facility with a syndicate of banks that, as of September 30, 2017,2018, had a borrowing base of $837.5 million,$1.0 billion, with an elected commitment amount of $800.0$900.0 million, with $215.6and $309.8 million of borrowings outstanding at a weighted average interest rate of 3.45% and $0.4 million in letters of credit outstanding.3.87%. The credit agreement governing our senior secured revolving credit facility provides for interest-only payments until May 4, 2022, when the credit agreement matures (subject to a springing maturity date of June 15, 2020 if the 7.50% Senior Notes have not been redeemed or refinanced on or prior to such time) and any outstanding borrowings are due.
Upon issuanceredemption of the 8.25%7.50% Senior Notes (described below), in accordance withdiscussed below, the May 4, 2022 maturity date of the credit agreement governingwill no longer be subject to a springing maturity date of June 15, 2020.
On January 31, 2018, as a result of the divestiture in the Eagle Ford Shale, the borrowing base under the senior secured revolving credit facility our borrowing base was reduced by 25% of the aggregate principal amount of the 8.25% Senior Notes, reducing the borrowing base from $900.0 million to $837.5 million. As a result of$830.0 million, however, the Fall 2017 borrowing base redetermination, the borrowing base was established at $900.0 million, with an elected commitment amount ofremained unchanged at $800.0 million, until the next redetermination thereof. The calculation of the Fall 2017 borrowing base was supported solely by the reserves of our Eagle Ford and Delaware Basin assets. The borrowing base under our credit agreement is subject to regular redeterminations in the spring and fall of each year, as well as special redeterminations described in the credit agreement, which in each case may reduce the amount of the borrowing base.million.
On May 4, 2017,2018, we entered into a ninth amendment to our credit agreement governing the revolving credit facility to, among other things, extend the maturity date, increase the maximum credit amount, and increase the borrowing base. On June 28, 2017, we entered into a tenthtwelfth amendment to the credit agreement governing the revolving credit facility to, among other things, increase the borrowing base and elected commitment amount, reduce the margins applied to Eurodollar and base rate

loans, and amend certain financialthe covenant limiting payment of dividends and restricted payments covenants as well as amend certain definitions. distributions on equity to increase our ability to make dividends and distributions on our equity interests. See “Note 6. Long-Term Debt” for further details.
On November 3, 2017,October 29, 2018, we entered into

an eleventh the thirteenth amendment to the credit agreement governing the revolving credit facility to, among other things, establishincrease the borrowing base at $900.0 million, with anand elected commitment amount of $800.0 million, and increasereduce the general basket availablemargins applied to Eurodollar and base rate loans. See “Note 14. Subsequent Events” for restricted payments.further details.
See “Note 6. Long-Term Debt” for additional details of the ninth and tenth amendments, rates of interest on outstanding borrowings, commitment fees on the unused portion of lender commitments, and the financial covenants we are subject to under the terms of the credit agreement. See “Note 14. Subsequent Events�� for additional detailsagreement as of September 30, 2018.
7.50% Senior Notes
During the first quarter of 2018, we redeemed $320.0 million of the eleventh amendment.
Preferred Stock Purchase Agreement
On June 28, 2017, we entered into a Preferred Stock Purchase Agreement with the GSO Funds to issue and sell in a private placement (i) $250.0 million (250,000 shares) of Preferred Stock and (ii) Warrants for 2,750,000 sharesoutstanding aggregate principal amount of our common stock, with7.50% Senior Notes at a term of ten years and an exercise price of $16.08 per share, for a cash purchase price equal to $970.00 per share101.875% of Preferred Stock purchased. Wepar. Upon the redemptions, we paid the GSO Funds $5.0$336.9 million, which included redemption premiums of $6.0 million as well as accrued but unpaid interest of $10.9 million. As a commitment fee upon signing the Preferred Stock Purchase Agreement. The closingresult of the private placement occurredredemptions, we recorded a loss on August 10, 2017 contemporaneously withextinguishment of debt of $8.7 million, which included the closingredemption premiums $6.0 million paid to redeem the notes and non-cash charges of $2.7 million attributable to the ExL Acquisition. We received net proceedswrite-off of approximately $236.4 million, net ofunamortized premium and debt issuance costs, from the issuance and sale of the Preferred Stock, which were used to fund a portion of the purchase price of the ExL Acquisition. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the ExL Acquisition and “Note 8. Preferred Stock” for further details regarding the Preferred Stock and Warrants.
Common Stock Offeringcosts.
On July 3, 2017,October 18, 2018, we completeddelivered a public offeringnotice of 15.6 million shares ofconditional redemption to the trustee for our common stock at a price per share of $14.28. We used the net proceeds of $222.4 million, net of offering costs, to fund a portion of the purchase price for the ExL Acquisition and for general corporate purposes.
8.25%7.50% Senior Notes due 2025
On July 14, 2017, we closed a public offering of $250.0to call for redemption on November 19, 2018, the remaining $130.0 million aggregate principal amount of 8.25% Senior Notes due 2025. The 8.25% Senior Notes mature on July 15, 2025 and have interest payable semi-annually each January 15 and July 15. We used the net proceeds of $245.4 million, net of underwriting discounts and commissions and offering costs, to fund a portion of the purchase price for the ExL Acquisition and for general corporate purposes. See “Note 6. Long-Term Debt” for further details regarding the 8.25% Senior Notes.
7.50% Senior Notes due 2020
We have the right to redeem all or a portion of the principal amount of theoutstanding 7.50% Senior Notes at a redemption pricesprice of 101.875% until September 14, 2018 and 100% beginning September 15, 2018 and thereafter, in each caseof par, plus accrued and unpaid interest. InThe redemption obligation was conditioned on and subject to there being made available to us under our revolving credit facility a commitment amount of at least $1.1 billion as of November 19, 2018, which was satisfied on October 29, 2018 in connection with anythe amendment to the credit agreement discussed above, therefore, our redemption or repurchaseobligation is no longer conditional. See “Note 14. Subsequent Events” for further details.
Redemption of notes,Preferred Stock
During the first quarter of 2018, we could enter into other transactions, which include refinancingredeemed 50,000 shares of Preferred Stock, representing 20% of the 7.50%issued and outstanding Preferred Stock, for $50.5 million, consisting of the $50.0 million redemption price and $0.5 million accrued and unpaid dividends. We recognized a $7.1 million loss on the redemption due to the excess of the $50.0 million redemption price over the $42.9 million redemption date carrying value of the Preferred Stock.
Redemption of Other Long-Term Debt
During the second quarter of 2018, we redeemed the remaining $4.4 million outstanding principal amount of our 4.375% Convertible Senior Notes.Notes due 2028 at a price equal to 100% of par. Upon redemption, we paid $4.5 million, which included accrued and unpaid interest of $0.1 million.
Critical Accounting Policies
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods reported. Certain of such estimates and assumptions are inherently unpredictable and will differ from actual results. We have identified the following critical accounting policies and estimates used in the preparation of our financial statements: use of estimates, oil and gas properties, oil and gas reserve estimates, derivative instruments, contingent consideration arrangements, income taxes, commitments and contingencies and preferred stock. These policies and estimates other than contingent consideration and preferred stock, are described in “Note 2. Summary of Significant Accounting Policies” of the Notes to Consolidated Financial Statements in our 20162017 Annual Report. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties”, “Note 8. Preferred Stock”, “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for details of the Preferred Stock and contingent consideration and preferred stock.arrangements. We evaluate subsequent events through the date the financial statements are issued.

The table below presents various pricing scenarios to demonstrate the sensitivity of our September 30, 20172018 cost center ceiling to changes in the 12-month average benchmark crude oil and natural gas prices underlying the average realized prices for sales of crude oil, NGLs, and natural gas on the first calendar day of each month during the 12-month period prior to the end of the current quarter (“12-Month Average Realized Prices.Price”). The sensitivity analysis is as of September 30, 20172018 and, accordingly, does not consider drilling and completion activity, acquisitions or dispositionsdivestitures of oil and gas properties, production, changes in crude oil and natural gas prices, and changes in development and operating costs occurring subsequent to September 30, 20172018 that may require revisions to estimates of proved reserves.
 12-Month Average Realized Prices Excess of cost center ceiling over net book value, less related deferred income taxes Increase (decrease) of cost center ceiling over net book value, less related deferred income taxes 12-Month Average Realized Prices Excess of cost center ceiling over net book value, less related deferred income taxes Increase (decrease) of cost center ceiling over net book value, less related deferred income taxes
Full Cost Pool Scenarios Crude Oil ($/Bbl) Natural Gas ($/Mcf)  (In millions) (In millions) Crude Oil ($/Bbl) Natural Gas ($/Mcf)  (In millions) (In millions)
September 30, 2017 Actual $47.74 $2.41 $457 
September 30, 2018 Actual $62.65 $2.55 $1,553 
  
Crude Oil and Natural Gas Price Sensitivity  
Crude Oil and Natural Gas +10% $52.72 $2.72 $920 $463 $68.99 $2.85 $2,105 $552
Crude Oil and Natural Gas -10% $42.77 $2.08 $— ($457) $56.32 $2.25 $1,001 ($552)
  
Crude Oil Price Sensitivity  
Crude Oil +10% $52.72 $2.41 $858 $401 $68.99 $2.55 $2,062 $509
Crude Oil -10% $42.77 $2.41 $62 ($395) $56.32 $2.55 $1,044 ($509)
  
Natural Gas Price Sensitivity  
Natural Gas +10% $47.74 $2.72 $519 $62 $62.65 $2.85 $1,596 $43
Natural Gas -10% $47.74 $2.08 $395 ($62) $62.65 $2.25 $1,510 ($43)
Income Taxes
Income taxes are recognized based on earnings reported for tax return purposes in addition to a provision for deferred income taxes. Deferred income taxes are recognized at the end of each reporting period for the future tax consequences of cumulative temporary differences between the tax bases of assets and liabilities and their reported amounts in our financial statements based on existing tax laws and enacted statutory tax rates applicable to the periods in which the temporary differences are expected to affect taxable income. We assess the realizability of our deferred tax assets on a quarterly basis by considering whether it is more likely than not that all or a portion of the deferred tax assets will not be realized. We consider all available evidence (both positive and negative) when determining whether a valuation allowance is required. In making this assessment, we evaluated possible sources of taxable income that may be available to realize the benefit of deferred tax assets, including projected future taxable income, the reversal of existing temporary differences, taxable income in carryback years and available tax planning strategies.
A significant item of objective negative evidence considered was the cumulative historical three year pre-tax loss and a net deferred tax asset position at September 30, 2017, driven primarily by the impairments of proved oil and gas properties beginning in the third quarter of 2015 and continuing through the third quarter of 2016, which limits the ability to consider other subjective evidence such as our potential for future growth. Beginning in the third quarter of 2015, and continuing through the third quarter of 2017, we concluded that it was more likely than not the deferred tax assets will not be realized. As a result, the net deferred tax assets at the end of each quarter, including September 30, 2017, were reduced to zero.
As a result of adopting ASU 2016-09, we recognized previously unrecognized windfall tax benefits which resulted in a cumulative-effect adjustment to retained earnings of approximately $15.7 million. This adjustment increased deferred tax assets, which in turn increased the valuation allowance by the same amount as of the beginning of 2017, resulting in a net cumulative- effect adjustment to retained earnings of zero and brought the valuation allowance to $580.1 million as of January 1, 2017.
For the three and nine months ended September 30, 2017, primarily as a result of current activity, a partial release of $3.3 million and $41.6 million, respectively, from the valuation allowance was needed to bring the net deferred tax assets to zero. After the impact of the partial release, the valuation allowance as of September 30, 2017 was $538.5 million. For the three and nine months ended September 30, 2016, we recorded additional valuation allowances of $36.7 million and $240.9 million, respectively, primarily as a result of the impairments of proved oil and gas properties recognized discussed above.
We will continue to evaluate whether the valuation allowance is needed in future reporting periods. The valuation allowance will remain until we can conclude that the net deferred tax assets are more likely than not to be realized. Future events or new

evidence which may lead us to conclude that it is more likely than not our net deferred tax assets will be realized include, but are not limited to, cumulative historical pre-tax earnings, improvements in crude oil prices, and taxable events that could result from one or more transactions. The valuation allowance does not preclude us from utilizing the tax attributes if we recognize taxable income. As long as we continue to conclude that the valuation allowance against our net deferred tax assets is necessary, we will have no significant deferred income tax expense or benefit.
As of September 30, 2017,2018, we have estimated U.S. federal net operating loss carryforwards of $913.1 million.$1.1 billion. Our ability to utilize these U.S. loss carryforwards to reduce future taxable income is subject to various limitations under the Internal Revenue Code of 1986, as amended (the “Code”). The utilization of such carryforwards may be limited upon the occurrence of certain ownership changes, including the purchase or sale of stock by 5% shareholders and the offering of stock by us during any three-year period resulting in an aggregate change of more than 50% in our beneficial ownership. In the event of an ownership change, Section 382 of the Code imposes an annual limitation on the amount of our taxable income that can be offset by these carryforwards. The limitation is generally equal to the product of (a) the fair market value of our equity multiplied by (b) a percentage approximately equivalent to the yield on long-term tax exempt bonds during the month in which an ownership change occurs. In addition, the limitation is increased if there are recognized built-in gains during any post-change year, but only to the extent of any net unrealized built-in gains inherent in the assets sold.
Due to the issuance of the Preferred Stock and the common stock offering associated with the ExL Acquisition in 2017, as well as the common stock offering in August 2018, our calculated ownership change percentage increased, however, as of September 30, 2017,2018, we do not believe we have a Section 382 limitation on the ability to utilize our U.S. loss carryforwards. Future equity transactions involving us or 5% shareholders of us (including, potentially, relatively small transactions and transactions beyond our control) could cause further ownership changes and therefore a limitation on the annual utilization of the U.S. loss carryforwards.
We classify interest and penalties associated with income taxes as interest expense. We follow the tax law ordering approach to determine the sequence in which deferred tax assets and other tax attributes are utilized.
Recently Adopted and Recently Issued Accounting Pronouncements
See “Note 2. Summary of Significant Accounting Policies” for discussion of our recent adoption of ASU 2016-09the pronouncements we recently adopted as well as the recently issued accounting pronouncements from the Financial Accounting Standards Board.
Volatility of Crude Oil and Natural Gas Prices
Our revenues, future rate of growth, results of operations, financial position and ability to borrow funds or obtain additional capital are substantially dependent upon prevailing prices of crude oil, which are affected by changes in market supply and demand, overall economic activity, global political environment, weather, inventory storage levels and other factors, as well as the level and prices at which we have hedged our future production.
We review the carrying value of our oil and gas properties on a quarterly basis under the full cost method of accounting. See “Note 4. Property and Equipment, Net” for additional details.
We use commodity derivative instruments to reduce our exposure to commodity price volatility for a portion of our forecasted production and thereby achieve a more predictable level of cash flows to support our drilling and completion capital expenditure program. We do not enter into derivative instruments for speculative or trading purposes. As of September 30, 2017, our commodity derivative instruments consisted of fixed price swaps, basis swaps, three-way collars and purchased and sold call options. See “Note 10. Derivative Instruments” for further details of our crude oil and natural gas derivative positions as of September 30, 2017 and “Note 14. Subsequent Events” for further details of the crude oil derivative positions entered into subsequent to September 30, 2017.
We determined that the Contingent ExL Payment is not clearly and closely related to the purchase and sale agreement for the ExL Properties, and therefore bifurcated this embedded feature and reflected the liability at fair value in the consolidated financial statements. The fair value of the contingent consideration was determined by a third-party valuation specialist using a Monte Carlo simulation including significant inputs such as future commodity prices, volatility factors for the future commodity prices and a risk adjusted discount rate. See “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for further details.
Forward-Looking Statements
This quarterly report contains statements concerning our intentions, expectations, projections, assessments of risks, estimations, beliefs, plans or predictions for the future, objectives, goals, strategies, future events or performance and underlying assumptions and other statements that are not historical facts. These statements are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding:

our growth strategies;
our ability to explore for and develop oil and gas resources successfully and economically;
our estimates and forecasts of the timing, number, profitability and other results of wells we expect to drill and other exploration activities;
our estimates, guidance and forecasts, including those regarding timing and levels of production;
changes in working capital requirements, reserves, and acreage;
the use of commodity derivative instruments to mitigate the effects of commodity price risk management activities and the impact onvolatility for a portion of our average realized prices;forecasted sales of production;
anticipated trends in our business;
availability of pipeline connections and water disposal on economic terms;
effects of competition on us;
our future results of operations;
profitability of drilling locations;
our liquidity and our ability to finance our exploration and development activities, including accessibility of borrowings under our revolving credit facility, our borrowing base, modification to financial covenants, and the result of any borrowing base redetermination;
our planned expenditures, prospects and capital expenditure plan;
future market conditions in the oil and gas industry;
our ability to make, integrate and develop acquisitions including the ExLDevon Acquisition (as described in this Quarterly Report on Form 10-Q) and realize any expected benefits or effects of any acquisitions or the timing, final purchase price, financing or consummation of any acquisitions including the ExLDevon Acquisition;
results of the ExLDevon Properties;
our use of proceeds from our recent equity and senior notes offerings;
possible future divestitures or other disposition transactions and the proceeds, results or benefits of any such transactions, including the timing thereof;
the benefits, effects, availability of and results of new and existing joint ventures and sales transactions;
our ability to maintain a sound financial position;
receipt of receivables and proceeds from divestitures;
our ability to complete planned transactions on desirable terms; and
the impact of governmental regulation, taxes, market changes and world events; andevents.
You generally can identify our forward-looking statements by the words “anticipate,” “believe,” budgeted,” “continue,” “could,” “estimate,” “expect,” “forecast,” “goal,” “intend,” “may,” “objective,” “plan,” “potential,” “predict,” “projection,” “possible,” “scheduled,” “should,” “guidance” or other similar words. Such statements rely on assumptions and involve risks and uncertainties, many of which are beyond our control, including, but not limited to, those relating to a worldwide economic downturn, availability of financing, our dependence on our exploratory drilling activities, the volatility of and changes in oil and gascommodity prices, the need to replace reserves depleted by production, impairments of proved oil and gas properties, operating risks of oil and gas operations, our dependence on our key personnel, factors that affect our ability to manage our growth and achieve our business strategy, results, delays and uncertainties that may be encountered in drilling, development or production, interpretations and impact of oil and gas reserve estimation and disclosure requirements, activities and approvals of our partners and parties with whom we have alliances, technological changes, capital requirements, the timing and amount of borrowing base determinations (including determinations by lenders)redeterminations and availability under our revolving credit facility, evaluations of us by lenders under our revolving credit facility, waivers or amendments under our revolving credit facility in connection with acquisitions, including the ExL Acquisition, other actions by lenders and holders of our capital stock, the potential impact of

government regulations, including current and proposed legislation and regulations related to hydraulic fracturing, oil and natural gas drilling, air emissions and climate change, regulatory determinations, litigation, competition, the uncertainty of reserve information and future net revenue estimates, failure to realize the anticipated benefits of an acquisition, including the ExLDevon Acquisition, exercise of third party purchase rights under area of mutual interest provisions under a joint operating agreement, market conditions and other factors affecting our ability to pay dividends on or redeem the Preferred Stock, integration and other acquisition risks, other factors affecting our ability to

reach agreements or complete acquisitions or dispositions, actions by sellers and buyers, effects of purchase price adjustments, availability of equipment and crews, actions by midstream and other industry participants, weather, our ability to obtain permits and licenses, the results of audits and assessments, the failure to obtain certain bank and lease consents, the existence and resolution of title defects, new taxes, and impact fees, delays, costs and difficulties relating to our joint ventures, actions by joint venture parties, results of exploration activities, the availability, market conditions and completion of land acquisitions and dispositions, costs of oilfield services, completion and connection of wells, and other factors detailed in this quarterly report.
We have based our forward-looking statements on our management’s beliefs and assumptions based on information available to our management at the time the statements are made. We caution you that assumptions, beliefs, expectations, intentions and projections about future events may and often do vary materially from actual results. Therefore, we cannot assure you that actual results will not differ materially from those expressed or implied by our forward-looking statements.
Some of the factors that could cause actual results to differ from those expressed or implied in forward-looking statements are described under “Part I. Item 1A. Risk Factors” and other sections of our 20162017 Annual Report and in our other filings with the SEC, including this quarterly report. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual outcomes may vary materially from those indicated. All subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by reference to these risks and uncertainties. You should not place undue reliance on our forward-looking statements. Each forward-looking statement speaks only as of the date of the particular statement, and, except as required by law, we undertake no duty to update or revise any forward-looking statement.
Item 3. Quantitative and Qualitative Disclosures About Market Risk
For information regarding our exposure to certain market risks, see “Item 7A. Quantitative and Qualitative Disclosures about Market Risk” ofin our 20162017 Annual Report. Except as disclosed in this report,below, there have been no material changes from the disclosure made in our 20162017 Annual Report regarding our exposure to certain market risks.
Commodity Price Risk
Our revenues, future rate of growth, results of operations, financial position and ability to borrow funds or obtain additional capital are substantially dependent upon prevailing prices of crude oil, NGLs, and natural gas, which are affected by changes in market supply and demand and other factors. The markets for crude oil, NGLs, and natural gas have been volatile, especially over the last several years, and these markets will likely continue to be volatile in the future.
The following tables set forth our crude oil, NGL, and natural gas revenues for the three and nine months ended September 30, 2018 as well as the impact on the crude oil, NGL, and natural gas revenues assuming a 10% increase and decrease in our average realized crude oil, NGL, and natural gas prices, excluding the impact of derivative settlements:  
  Three Months Ended September 30, 2018
  Crude oil NGLs Natural gas Total
  (In thousands)
Revenues 
$254,525
 
$33,798
 
$15,052
 
$303,375
         
Impact of a 10% fluctuation in average realized prices 
$25,450
 
$3,381
 
$1,506
 
$30,337
  Nine Months Ended September 30, 2018
  Crude oil NGLs Natural gas Total
  (In thousands)
Revenues 
$679,242
 
$71,969
 
$41,417
 
$792,628
         
Impact of a 10% fluctuation in average realized prices 
$67,931
 
$7,197
 
$4,147
 
$79,275
We use commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of our forecasted sales of production and achieve a more predictable level of cash flow. We do not enter into commodity derivative instruments for speculative purposes. As of September 30, 2018, our commodity derivative instruments consisted of price swaps, three-way collars, basis swaps, and sold call options. See “Note 10. Derivative Instruments” for further details of our crude oil, NGL and natural gas commodity derivative instruments as of September 30, 2018 and “Note 14. Subsequent Events” for further details of our crude oil derivative instruments entered into subsequent to September 30, 2018.

The primary drivers of our commodity derivative instrument fair values are the underlying forward oil and gas price curves. The following table sets forth the fair values as of September 30, 2018, excluding deferred premium obligations, as well as the impact on the fair values assuming a 10% increase and decrease in the underlying forward oil and gas price curves:
  Crude oil NGLs Natural gas Total
  (In thousands)
Fair value liability as of September 30, 2018 
$128,497
 
$7,378
 
$1,832
 
$137,707
         
Impact of a 10% increase in forward commodity prices 
$75,109
 
$1,887
 
$2,266
 
$79,262
Impact of a 10% decrease in forward commodity prices 
($56,318) 
($1,845) 
($1,376) 
($59,539)
The fair values of the contingent consideration arrangements were determined by a third-party valuation specialist using Monte Carlo simulations including significant inputs such as forward oil and gas price curves, volatility factors and risk adjusted discount rates. See “Note 10. Derivative Instruments” and “Note 11. Fair Value Measurements” for further details.
The following table sets forth the fair values of the contingent consideration arrangements as of September 30, 2018, as well as the impact on the fair values assuming a 10% increase and decrease in the underlying forward oil and gas price curves:
  Contingent ExL Consideration Contingent Niobrara Consideration Contingent Marcellus Consideration Contingent Utica Consideration
  (In thousands)
Potential (payment) receipt per year 
($50,000) 
$5,000
 
$3,000
 
$5,000
Maximum potential (payment) receipt 
($125,000) 
$15,000
 
$7,500
 
$15,000
         
Fair value (liability) asset as of September 30, 2018 
($112,045) 
$11,675
 
$1,315
 
$12,215
Impact of a 10% increase in forward commodity prices 
($2,685) 
$835
 
$625
 
$690
Impact of a 10% decrease in forward commodity prices 
$5,490
 
($1,270) 
($530) 
($1,130)
Interest Rate Risk
We are exposed to market risk due to the floating interest rate associated with any outstanding borrowings on our revolving credit facility. Changes in interest rates do not impact the amount of interest we pay on our fixed-rate 7.50% Senior Notes, 6.25% Senior Notes, and 8.25% Senior Notes, but can impact their fair values. As of September 30, 2018, we had approximately $1.3 billion of long-term debt outstanding. Of this amount, approximately $1.0 billion was fixed-rate debt with a weighted average interest rate of 6.89%. See “Note 11. Fair Value Measurements” for further details on the fair value of our 7.50% Senior Notes, 6.25% Senior Notes, and 8.25% Senior Notes.
Item 4. Controls and Procedures
Evaluation of Disclosure Controls and Procedures. Our Chief Executive Officer and Chief Financial Officer performed an evaluation of our disclosure controls and procedures, which have been designed to provide reasonable assurance that the information required to be disclosed by the Company in the reports it files or submits under the Exchange Act is accumulated and communicated to the Company’s management, including our Chief Executive Officer and Chief Financial Officer, to allow timely decisions regarding required disclosure. They concluded that the controls and procedures were effective as of September 30, 20172018 to provide reasonable assurance that the information required to be disclosed by the Company in reports it files under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC’s rules and forms and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. While our disclosure controls and procedures provide reasonable assurance that the appropriate information will be available on a timely basis, this assurance is subject to limitations inherent in any control system, no matter how well it may be designed or administered.
Changes in Internal Controls. There was no change in our internal control over financial reporting during the quarter ended September 30, 20172018 that materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Part II. Other Information
Item 1. Legal Proceedings
From time to time, the Company is party to certain legal actions and claims arising in the ordinary course of business. While the outcome of these events cannot be predicted with certainty, management does not currently expect these matters to have a materially adverse effect on the financial position or results of operations of the Company.
The following disclosure updates the legal proceeding set forth under the heading “Barrow-Shaver Litigation” in the 2017 Annual Report to reflect developments during the three months ended September 30, 2018 and should be read together with the corresponding disclosure in the 2017 Annual Report.
Barrow-Shaver Litigation
On September 24, 2014 an unfavorable jury verdict was delivered against the Company in a case entitled Barrow-Shaver Resources Company v. Carrizo Oil & Gas, Inc. in the amount of $27.7 million. On January 5, 2015, the court entered a judgment awarding the verdict amount plus $2.9 million in attorneys’ fees plus pre-judgment interest. On January 31, 2017, the Twelfth Court of Appeals at Tyler, Texas reversed the trial court decision and rendered judgment in favor of the Company, declaring that the plaintiff take nothing on any of its claims. The plaintiff filed a motion for rehearing with the Twelfth Court of Appeals at Tyler, Texas, which was not granted, and petitioned the Texas Supreme Court for review. In August 2018, the Texas Supreme Court granted review and set oral argument for December 4, 2018. The payment of damages per the original judgment was superseded by posting a bond in the amount of $25.0 million, which will remain outstanding pending resolution of the appeals process (which could take an extended period of time) or agreement of the parties.
The case was filed September 19, 2012 in the 7th Judicial District Court of Smith County, Texas and arises from an agreement between the plaintiff and the Company whereby the plaintiff could earn an assignment of certain of the Company’s leasehold interests in Archer and Baylor counties, Texas for each commercially productive oil and gas well drilled by the plaintiff on acreage covered by the agreement. The agreement contained a provision that the plaintiff had to obtain the Company’s written consent to any assignment of rights provided by such agreement. The plaintiff subsequently entered into a purchase and sale agreement with a third-party purchaser allowing the third-party purchaser to purchase rights in approximately 62,000 leasehold acres, including the rights under the agreement with the Company, for approximately $27.7 million. The plaintiff requested the Company’s consent to make the assignment to the third-party purchaser and the Company refused. The plaintiff alleged that, as a result of the Company’s refusal, the third-party purchaser terminated such purchase and sale agreement. The plaintiff sought damages for breach of contract, tortious interference with existing contract and other grounds in an amount not to exceed $35.0 million plus exemplary damages and attorneys’ fees. As mentioned above, the Twelfth Court of Appeals at Tyler, Texas found in favor of the Company on all grounds.
Item 1A. Risk Factors
Except as disclosed below, thereThere were no material changes to the factors discussed in “Part I. Item 1A. Risk Factors” in our 2017 Annual Report on Form 10-K for the year ended December 31, 2016 and our Quarterly Report on Form 10-Q for the period ended June 30, 2017.
A future issuance, sale or exchange of our stock or warrants could trigger a limitation on our ability to utilize net operating loss carryforwards.
Our ability to utilize U.S. net operating loss carryforwards to reduce future taxable income is subject to various limitations under the Internal Revenue Code of 1986, as amended (the “Code”). The utilization of such carryforwards may be limited under Section 382 of the Code upon the occurrence of ownership changes resulting from issuances of our stock or the sale or exchange

of our stock by certain shareholders if, as a result, there is an aggregate change of more than 50% in the beneficial ownership of our stock during any three-year period. For this purpose, “stock” includes certain preferred stock and warrants (including the Preferred Stock and the Warrants issued to finance in part, the ExL Acquisition). In the event of such an ownership change, Section 382 of the Code imposes an annual limitation on the amount of our taxable income that can be offset by these loss carryforwards. The limitation is generally equal to the product of (a) the fair market value of our equity multiplied by (b) a percentage approximately equivalent to the yield on long-term tax exempt bonds during the month in which an ownership change occurs. In addition, the limitation is increased if there are recognized built-in gains during any post-change year, but only to the extent of any net unrealized built-in gains inherent in the assets sold. Future issuances, sales or exchanges of our stock could, taken together with prior transactions with respect to our stock, trigger an ownership change under Section 382 of the Code and therefore a limitation on our ability to utilize our U.S. loss carryforwards. Any such limitation could cause some of such loss carryforwards to expire before we would be able to utilize them to reduce taxable income in future periods, possibly resulting in a substantial income tax expense or write down of our tax assets or both.
Holders of the Preferred Stock have rights that may restrict our ability to operate our business or be adverse to holders of our common stock.
The Statement of Resolutions Establishing Series of 8.875% Redeemable Preferred Stock of Carrizo Oil & Gas, Inc. (the “Statement of Resolutions”) contains covenants that, among other things, so long as the GSO Funds and their affiliates beneficially own more than 50% of the outstanding Preferred Stock, limit our ability to, without the written consent of a designated representative of the Preferred Stock, but subject to certain exceptions, (i) issue stock senior to or on parity with the Preferred Stock, (ii) incur indebtedness that would cause us to exceed a specified leverage ratio, (iii) amend, modify, alter or supplement our articles of incorporation or the Statement of Resolutions in a manner that would adversely affect the rights, preferences or privileges of the Preferred Stock, (iv) enter into or amend certain debt agreements that would be more restrictive on the payment of dividends on, or redemption of, the Preferred Stock than those existing on the Preferred Stock closing and (v) pay distributions on, purchase or redeem our common stock or other stock junior to the Preferred Stock that would cause us to exceed a specified leverage ratio. We can be required to redeem the Preferred Stock (i) after the seventh anniversary of its initial issuance or (ii) at any time we fail to pay a dividend, subject to limited cure rights.
Holders of the Preferred Stock will, in certain circumstances, have additional rights in the event we fail to timely pay dividends, fail to redeem the Preferred Stock upon a change of control if required or fail to redeem the Preferred Stock upon request of the holders of the Preferred Stock following the seventh anniversary of the date of issuing the Preferred Stock. These rights include, subject to certain exceptions, (i) that holders of a majority of the then-outstanding Preferred Stock will have the exclusive right, voting separately as a class, to appoint and elect up to two directors to our board of directors, (ii) that approval of the holders of a majority of the then-outstanding Preferred Stock will be required prior to incurring indebtedness subject to a leverage ratio, declaring or paying prohibited distributions or issuing equity of subsidiaries to third parties; and (iii) that holders of a majority of the then-outstanding Preferred Stock will have the right to increase dividend payments and the ability to require us to pay dividends in common stock.
Holders of the Preferred Stock also have limited voting rights, including those with respect to potential amendments to our articles of incorporation or the Statement of Resolutions that have an adverse effect on the existing terms of the Preferred Stock and in certain other limited circumstances or as required by law.Report.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
The information regarding the private placement of the Preferred Stock and Warrants set forth in “Part I. Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this report is incorporated by reference into this Part II. Item 2. Unregistered Sales of Equity Securities and Use of Proceeds. Such private placement was made in reliance upon an exemption from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”), pursuant to Section 4(a)(2) thereof. To the extent that any shares of common stock are issued upon exercise of the Warrants by a Warrant holder, they will be issued in transactions anticipated to be exempt from registration under the Securities Act by virtue of Section 3(a)(9) thereof. The maximum number of shares of common stock that may be issued under the Warrants is 2,750,000.None.
Item 3. Defaults Upon Senior Securities
None.
Item 4. Mine Safety Disclosures
Not applicable.
Item 5. Other Information
None.

Item 6. Exhibits
The following exhibits are required by Item 601 of Regulation S-K and are filed as part of this report: 
Exhibit
Number
  Exhibit Description
3.1
†1.1
4.1
4.2
10.1
10.2
*10.3
*31.1
*31.2
*32.1
*32.2
*101Interactive Data Files
 
*Filed herewith.Incorporated by reference as indicated.
+*Schedules to this exhibit have been omitted pursuant to Item 601(b) of Regulation S-K; a copy of the omitted schedules will be furnished to the U.S. Securities and Exchange Commission supplementally upon request.Filed herewith.


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.
   
Carrizo Oil & Gas, Inc.
(Registrant)
     
Date:November 8, 20177, 2018 By:/s/ David L. Pitts
  �� 
Vice President and Chief Financial Officer
(Principal Financial Officer)
    
Date:November 8, 20177, 2018 By:/s/ Gregory F. Conaway
    
Vice President and Chief Accounting Officer
(Principal Accounting Officer)

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