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

FORM 10-Q

þ
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 20182019
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

carrizologojpgfullcolora01.jpg
CARRIZO OIL & GAS, INC.
(Exact name of registrant as specified in its charter)

Texas76-0415919
(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) (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  ¨Yes      No  
Indicate by check mark whether the registrant has submitted electronically, if any, every Interactive Data File required to be submitted 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 such files).    YES  þ    NO  ¨Yes      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 filerAccelerated Filer þ Accelerated filerFiler ¨
Non-accelerated filer 
¨
Non-accelerated Filer
 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  þYes      No  
Securities registered pursuant to Section 12(b) of the Act:
Common Stock, $0.01 par valueCRZONASDAQ Global Select Market
(Title of class)(Trading Symbol)(Name of exchange on which registered)
The number of shares outstanding of the registrant’s common stock, par value $0.01 per share, as of August 1, 20182, 2019 was 82,114,492.92,552,930.








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)
 June 30,
2018
 December 31,
2017
 June 30,
2019
 December 31,
2018
Assets        
Current assets        
Cash and cash equivalents 
$2,099
 
$9,540
 
$2,282
 
$2,282
Accounts receivable, net 111,100
 107,441
 98,444
 99,723
Derivative assets 10,928
 
 13,621
 39,904
Other current assets 8,378
 5,897
 9,472
 8,460
Total current assets 132,505
 122,878
 123,819
 150,369
Property and equipment        
Oil and gas properties, full cost method        
Proved properties, net 1,959,951
 1,965,347
 2,587,341
 2,333,470
Unproved properties, not being amortized 597,892
 660,287
 656,976
 673,833
Other property and equipment, net 10,582
 10,176
 11,188
 11,221
Total property and equipment, net 2,568,425
 2,635,810
 3,255,505
 3,018,524
Other assets 20,909
 19,616
Deferred income taxes 177,723
 
Operating lease right-of-use assets 64,615
 
Other long-term assets 13,666
 16,207
Total Assets 
$2,721,839
 
$2,778,304
 
$3,635,328
 
$3,185,100
        
Liabilities and Shareholders’ Equity        
Current liabilities        
Accounts payable 
$113,651
 
$74,558
 
$102,943
 
$98,811
Revenues and royalties payable 53,280
 52,154
 54,662
 49,003
Accrued capital expenditures 117,934
 119,452
 74,005
 60,004
Accrued interest 21,126
 28,362
 18,700
 18,377
Derivative liabilities 145,520
 57,121
 64,751
 55,205
Operating lease liabilities 34,049
 
Other current liabilities 52,020
 41,175
 51,430
 40,609
Total current liabilities 503,531
 372,822
 400,540
 322,009
Long-term debt 1,502,307
 1,629,209
 1,731,418
 1,633,591
Asset retirement obligations 16,305
 23,497
 22,111
 18,360
Derivative liabilities 87,933
 112,332
Operating lease liabilities 36,526
 
Deferred income taxes 4,164
 3,635
 8,218
 8,017
Other liabilities 8,273
 51,650
Other long-term liabilities 20,101
 47,797
Total liabilities 2,122,513
 2,193,145
 2,218,914
 2,029,774
Commitments and contingencies        
Preferred stock        
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of June 30, 2018 and 250,000 issued and outstanding as of December 31, 2017 172,858
 214,262
Preferred stock, $0.01 par value, 10,000,000 shares authorized; 200,000 issued and outstanding as of June 30, 2019 and December 31, 2018 176,056
 174,422
Shareholders’ equity        
Common stock, $0.01 par value, 180,000,000 shares authorized; 82,107,544 issued and outstanding as of June 30, 2018 and 81,454,621 issued and outstanding as of December 31, 2017 821
 815
Common stock, $0.01 par value, 180,000,000 shares authorized; 92,552,930 issued and outstanding as of June 30, 2019 and 91,627,738 issued and outstanding as of December 31, 2018 926
 916
Additional paid-in capital 1,918,820
 1,926,056
 2,132,131
 2,131,535
Accumulated deficit (1,493,173) (1,555,974) (892,699) (1,151,547)
Total shareholders’ equity 426,468
 370,897
 1,240,358
 980,904
Total Liabilities and Shareholders’ Equity 
$2,721,839
 
$2,778,304
 
$3,635,328
 
$3,185,100
The accompanying notes are an integral part of these consolidated financial statements.


CARRIZO OIL & GAS, INC.
CONSOLIDATED STATEMENTS OF INCOME
(In thousands, except per share amounts)
(Unaudited)
  Three Months Ended
June 30,
  Six Months Ended
June 30,
 2018 2017 2018 2017
Revenues       
Crude oil
$229,798
 
$142,806
 
$424,717
 
$270,898
Natural gas liquids21,269
 7,786
 38,171
 15,211
Natural gas12,906
 15,891
 26,365
 31,729
Total revenues263,973
 166,483
 489,253
 317,838
        
Costs and Expenses       
Lease operating35,151
 36,048
 74,424
 65,893
Production taxes12,487
 7,143
 23,062
 13,351
Ad valorem taxes3,640
 1,073
 5,613
 4,040
Depreciation, depletion and amortization72,430
 59,072
 136,897
 113,454
General and administrative, net18,265
 11,596
 45,557
 33,299
(Gain) loss on derivatives, net67,714
 (26,065) 97,310
 (51,381)
Interest expense, net15,599
 21,106
 31,116
 41,677
Loss on extinguishment of debt
 
 8,676
 
Other expense, net2,895
 204
 2,995
 1,178
Total costs and expenses228,181
 110,177
 425,650
 221,511
        
Income Before Income Taxes35,792
 56,306
 63,603
 96,327
Income tax expense(483) 
 (802) 
Net Income
$35,309
 
$56,306
 
$62,801
 
$96,327
Dividends on preferred stock(4,474) 
 (9,337) 
Accretion on preferred stock(740) 
 (1,493) 
Loss on redemption of preferred stock
 
 (7,133) 
Net Income Attributable to Common Shareholders
$30,095
 
$56,306
 
$44,838
 
$96,327
        
Net Income Attributable to Common Shareholders Per Common Share       
Basic
$0.37
 
$0.86
 
$0.55
 
$1.47
Diluted
$0.36
 
$0.85
 
$0.54
 
$1.46
        
Weighted Average Common Shares Outstanding       
Basic82,058
 65,767
 81,802
 65,479
Diluted83,853
 65,908
 83,240
 65,866
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
  Shares Amount   
Balance as of December 31, 2017 81,454,621
 
$815
 
$1,926,056
 
($1,555,974) 
$370,897
Stock-based compensation expense 
 
 10,757
 
 10,757
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares 652,923
 6
 (30) 
 (24)
Dividends on preferred stock 
 
 (9,337) 
 (9,337)
Accretion on preferred stock 
 
 (1,493) 
 (1,493)
Loss on redemption of preferred stock 
 
 (7,133) 
 (7,133)
Net income 
 
 
 62,801
 62,801
Balance as of June 30, 2018 82,107,544
 
$821
 
$1,918,820
 
($1,493,173) 
$426,468
  Three Months Ended June 30, Six Months Ended
June 30,
 2019 2018 2019 2018
Revenues       
Crude oil
$245,212
 
$229,798
 
$447,956
 
$424,717
Natural gas liquids14,159
 21,269
 30,996
 38,171
Natural gas5,596
 12,906
 19,055
 26,365
Total revenues264,967
 263,973
 498,007
 489,253
        
Costs and Expenses       
Lease operating44,514
 35,151
 86,545
 74,424
Production and ad valorem taxes17,793
 16,127
 32,687
 28,675
Depreciation, depletion and amortization80,766
 72,430
 156,088
 136,897
General and administrative, net17,301
 18,265
 42,033
 45,557
(Gain) loss on derivatives, net(20,449) 67,714
 62,835
 97,310
Interest expense, net18,024
 15,599
 34,475
 31,116
Loss on extinguishment of debt
 
 
 8,676
Other (income) expense, net(2,766) 2,895
 1,592
 2,995
Total costs and expenses155,183
 228,181
 416,255
 425,650
        
Income Before Income Taxes109,784
 35,792
 81,752
 63,603
Income tax (expense) benefit(2,299) (483) 177,096
 (802)
Net Income
$107,485
 
$35,309
 
$258,848
 
$62,801
Dividends on preferred stock(4,452) (4,474) (8,812) (9,337)
Accretion on preferred stock(833) (740) (1,634) (1,493)
Loss on redemption of preferred stock
 
 
 (7,133)
Net Income Attributable to Common Shareholders
$102,200
 
$30,095
 
$248,402
 
$44,838
        
Net Income Attributable to Common Shareholders Per Common Share       
Basic
$1.10
 
$0.37
 
$2.70
 
$0.55
Diluted
$1.10
 
$0.36
 
$2.69
 
$0.54
        
Weighted Average Common Shares Outstanding       
Basic92,497
 82,058
 92,121
 81,802
Diluted92,700
 83,853
 92,479
 83,240
The accompanying notes are an integral part of these consolidated financial statements.



CARRIZO OIL & GAS, INC.
CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY
(In thousands, except share amounts)
(Unaudited)
  Three Months Ended June 30, 2019 and 2018
  Common Stock Additional
Paid-in
Capital
 
Accumulated Deficit
 Total
Shareholders’
Equity
  Shares Amount   
Balance as of March 31, 2019 92,503,562
 
$925
 
$2,130,989
 
($1,000,184) 
$1,131,730
Stock-based compensation expense 
 
 6,428
 
 6,428
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares 49,368
 1
 (1) 
 
Dividends on preferred stock 
 
 (4,452) 
 (4,452)
Accretion on preferred stock 
 
 (833) 
 (833)
Net income 
 
 
 107,485
 107,485
Balance as of June 30, 2019 92,552,930
 
$926
 
$2,132,131
 
($892,699) 
$1,240,358
           
Balance as of March 31, 2018 82,065,561
 
$821
 
$1,918,942
 
($1,528,482) 
$391,281
Stock-based compensation expense 
 
 5,110
 
 5,110
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares 41,983
 
 (18) 
 (18)
Dividends on preferred stock 
 
 (4,474) 
 (4,474)
Accretion on preferred stock 
 
 (740) 
 (740)
Net income 
 
 
 35,309
 35,309
Balance as of June 30, 2018 82,107,544
 
$821
 
$1,918,820
 
($1,493,173) 
$426,468
  Six Months Ended June 30, 2019 and 2018
  Common Stock Additional
Paid-in
Capital
 
Accumulated Deficit
 Total
Shareholders’
Equity
  Shares Amount   
Balance as of December 31, 2018 91,627,738
 
$916
 
$2,131,535
 
($1,151,547) 
$980,904
Stock-based compensation expense 
 
 11,052
 
 11,052
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares 925,192
 10
 (10) 
 
Dividends on preferred stock 
 
 (8,812) 
 (8,812)
Accretion on preferred stock 
 
 (1,634) 
 (1,634)
Net income 
 
 
 258,848
 258,848
Balance as of June 30, 2019 92,552,930
 
$926
 
$2,132,131
 
($892,699) 
$1,240,358
           
Balance as of December 31, 2017 81,454,621
 
$815
 
$1,926,056
 
($1,555,974) 
$370,897
Stock-based compensation expense 
 
 10,757
 
 10,757
Issuance of common stock upon grants of restricted stock awards and vestings of restricted stock units and performance shares 652,923
 6
 (30) 
 (24)
Dividends on preferred stock 
 
 (9,337) 
 (9,337)
Accretion on preferred stock 
 
 (1,493) 
 (1,493)
Loss on redemption of preferred stock 
 
 (7,133) 
 (7,133)
Net income 
 
 
 62,801
 62,801
Balance as of June 30, 2018 82,107,544
 
$821
 
$1,918,820
 
($1,493,173) 
$426,468
The accompanying notes are an integral part of these consolidated financial statements.

CARRIZO OIL & GAS, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
 Six Months Ended
June 30,
Six Months Ended
June 30,
2018 20172019 2018
Cash Flows From Operating Activities      
Net income
$62,801
 
$96,327

$258,848
 
$62,801
Adjustments to reconcile net income to net cash provided by operating activities      
Depreciation, depletion and amortization136,897
 113,454
156,088
 136,897
(Gain) loss on derivatives, net97,310
 (51,381)
Cash (paid) received for derivative settlements, net(38,448) 1,258
Loss on derivatives, net62,835
 97,310
Cash paid for commodity derivative settlements, net(7,160) (38,448)
Loss on extinguishment of debt8,676
 

 8,676
Stock-based compensation expense, net10,724
 3,596
7,969
 10,724
Deferred income taxes529
 
Deferred income tax (benefit) expense(177,521) 529
Non-cash interest expense, net1,262
 2,074
1,271
 1,262
Other, net3,975
 2,767
2,079
 3,975
Changes in components of working capital and other assets and liabilities-      
Accounts receivable2,437
 (8,094)(7,824) 2,437
Accounts payable3,878
 14,486
(6,544) 3,878
Accrued liabilities(12,883) 5,650
12,733
 (12,883)
Other assets and liabilities, net(1,286) (982)(978) (1,286)
Net cash provided by operating activities275,872
 179,155
301,796
 275,872
Cash Flows From Investing Activities      
Capital expenditures(430,639) (290,625)(362,478) (430,639)
Acquisitions of oil and gas properties
 (16,533)8,222
 
Deposit for acquisition of oil and gas properties
 (75,000)
Proceeds from divestitures of oil and gas properties, net345,789
 18,201
Proceeds from divestitures of oil and gas properties6,034
 345,789
Other, net(1,096) (2,479)(38) (1,096)
Net cash used in investing activities(85,946) (366,436)(348,260) (85,946)
Cash Flows From Financing Activities      
Redemptions of senior notes(330,435) 

 (330,435)
Redemption of preferred stock(50,030) 

 (50,030)
Borrowings under credit agreement1,126,856
 919,097
898,890
 1,126,856
Repayments of borrowings under credit agreement(933,156) (723,797)(801,993) (933,156)
Payments of debt issuance costs(627) (4,368)
Payment of commitment fee for issuance of preferred stock
 (5,000)
Payments of credit facility amendment fees(613) (627)
Payments of dividends on preferred stock(9,337) 
(8,812) (9,337)
Cash paid for settlements of contingent consideration arrangements, net(40,000) 
Other, net(638) (617)(1,008) (638)
Net cash provided by (used in) financing activities(197,367) 185,315
46,464
 (197,367)
Net Decrease in Cash and Cash Equivalents(7,441) (1,966)
 (7,441)
Cash and Cash Equivalents, Beginning of Period9,540
 4,194
2,282
 9,540
Cash and Cash Equivalents, End of Period
$2,099
 
$2,228

$2,282
 
$2,099
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” or “Carrizo”), 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 StatementsProposed Merger of the Company with Callon
On July 14, 2019, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Callon Petroleum Company, a Delaware corporation (“Callon”). Pursuant to the Merger Agreement, the Company will be merged with and into Callon, with Callon continuing as the surviving entity (the “Merger”). The Merger was structured as a direct merger with the closing expected to occur in the fourth quarter of 2019.
On and subject to the terms and conditions set forth in the Merger Agreement, upon closing of the Merger, each share of Carrizo’s common stock, par value $0.01 per share, issued and outstanding immediately prior to the effective time of the Merger will automatically be converted into the right to receive 2.05 shares of Callon’s common stock, par value $0.01 per share (the “Exchange Ratio”). Callon’s common stock is listed and traded on the New York Stock Exchange (the “NYSE”) under the ticker symbol CPE. Pursuant to the Merger Agreement, three members of the Company’s board of directors will become directors of Callon immediately after the effective time of the Merger.
Pursuant to the terms of the Merger Agreement, each issued and outstanding share of the Company’s 8.875% redeemable preferred stock, par value $0.01 per share (the “Preferred Stock”), will either be converted into the right to receive one share of 8.875% redeemable preferred stock, par value $0.01 per share, of Callon, which will have substantially the same terms as the Preferred Stock or will be redeemed for an amount in cash specified in the Merger Agreement (the “Preferred Redemption”). Callon is obligated to deposit the amount required to effect the Preferred Redemption (the “Preferred Deposit”) no later than the open of business on the date of the closing of the Merger, though the Company is permitted to fund such amount if Callon fails to do so.
In connection with the proposed Merger, restricted stock awards and units and performance shares that are outstanding immediately prior to closing will generally become vested and converted into shares of Callon common stock based on the Exchange Ratio. Stock appreciation rights that will be settled in cash (“Cash SARs”) that are outstanding immediately prior to the closing will be canceled and converted into a vested stock appreciation right covering shares of Callon common stock, with the calculation of such conversion described in the Merger Agreement.
The completion of the Merger is subject to certain customary mutual closing conditions, including (i) the receipt of the required approvals from the shareholders of the Company and Callon, (ii) either (a) the approval by the holders of Preferred Stock or (b) the Preferred Deposit having been deposited and the Preferred Redemption having occurred, (iii) the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the “HSR Act”), which was terminated effective August 6, 2019, and (iv) the receipt by each party of a customary opinion that the Merger will qualify as a “reorganization” within the meaning of Section 368(a) of the Internal Revenue Code of 1986. The obligation of each party to complete the Merger is also conditioned upon the other party’s representations and warranties being true and correct, subject to certain materiality exceptions, and the other party having performed in all material respects its obligations under the Merger Agreement.
The Merger Agreement contains termination rights for each of the Company and Callon, including, among other things, (i) by either the Company or Callon if the other party’s board of directors changes its recommendation with respect to the transactions contemplated by the Merger Agreement or if the other party willfully breaches the covenant not to solicit alternative business combination proposals from third parties, (ii) by the Company, if its board of directors changes its recommendation with respect to the transactions contemplated by the Merger Agreement and substantially concurrently the Company enters into an acquisition agreement providing for a Company Superior Proposal, as defined in the Merger Agreement, (iii) by the Company or Callon, if the approvals of either their common shareholders shall not have been obtained, (iv) by the Company or Callon, if in certain circumstances, the other party breaches or fails to perform any of its representations, warranties or covenants in the Merger Agreement, and (v) by the Company or Callon, if the Merger shall not have been consummated by February 14, 2020, with a possible extension to April 14, 2020 in certain circumstances. Upon termination of the Merger Agreement under differing specified circumstances, (i) the Company would be required to pay Callon a termination fee of $47.4 million or to reimburse Callon up to $7.5 million in expenses or (ii) Callon would be required to pay the Company a termination fee of $57.0 million or to reimburse the Company up to $7.5 million in expenses.

The capitalized terms which are not defined in this description of the proposed Merger, shall have the meaning given to such terms in the Merger Agreement. Additional information on the proposed Merger is included in the Form 8-K filed with the SEC on July 15, 2019 and in this Quarterly Report on Form 10-Q, including “Part II. Other Information—Item 1A. Risk Factors”.
2. Summary of Significant Accounting Policies
Basis of Presentation and Principles of Consolidation
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, 2017 (“2017 Annual Report”). Except as disclosed herein, there have been no material changes to the information disclosed in the notes in the 2017 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.
Significant Accounting Policies
The Company’s significant accounting policies are described in “Note 2. Summary of Significant Accounting PoliciesPolicies” of the Notes to Consolidated Financial Statements in its Annual Report on Form 10-K for the year ended December 31, 2018 (“2018 Annual Report”) and are supplemented by the notes included in this Quarterly Report on Form 10-Q. The financial statements and related notes included in this report should be read in conjunction with the Company’s 2018 Annual Report.
Revenue RecognitionRecently Adopted Accounting Standards
Impact of ASC 606 Adoption.Leases. Effective January 1, 2018,2019, the Company adopted ASU No. 2014-09, Revenue From Contracts With Customers2016-02, Leases (Topic 606)842) (“ASC 606”842”), using the modified retrospective methodapproach and has applied the standard to all existing contracts. ASC 606 supersedes previous revenue recognition requirements in ASC 605 - Revenue Recognition (“ASC 605”) and includes a five-step revenue recognition model to depict the transfer of goods or services to customers in an amount that reflects the consideration in exchange for those goods or services. As a result of adopting ASC 606, the Company did not have a cumulative-effect adjustment in retained earnings.earnings as a result of the adoption. ASC 842 significantly changes accounting for leases by requiring that lessees recognize a liability representing the obligation to make lease payments and a related right-of-use (“ROU”) asset for virtually all lease transactions. However, ASC 842 does not apply to leases of mineral rights to explore for or use crude oil and natural gas. Upon adoption, the Company implemented policy elections and practical expedients which include the following:
package of practical expedients which allows the Company to avoid reassessing contracts that commenced prior to adoption that were properly evaluated under legacy lease accounting guidance;
excluding ROU assets and lease liabilities for leases with terms that are less than one year;
combining lease and non-lease components and accounting for them as a single lease (elected by asset class);
excluding land easements that existed or expired prior to adoption; and
policy election that eliminates the need for adjusting prior period comparable financial statements prepared under legacy lease accounting guidance.
As a result of adopting ASC 842, the Company recorded lease liabilities of approximately $75.2 million and associated ROU assets of approximately $69.1 million on its consolidated balance sheets. The comparative information fordifference between the threelease liabilities and six months ended June 30, 2017 has not been recastROU assets is due to a rent holiday and continues to be reportedlease build-out incentives that were recorded as deferred lease liabilities under thelegacy lease accounting standards in effect for that period. Additionally,guidance. The adoption of ASC 606842 did not impact netmaterially change the Company’s consolidated statements of income attributable to common shareholders and the Company does not expect that it will do so in future periods.or consolidated statements of cash flows. See “Note 6. Leases” for further discussion.

Subsequent Events
The tables below summarizesCompany evaluates subsequent events through the impact of adoptiondate the financial statements are issued. See “Note 16. Subsequent Events” for the three and six months ended June 30, 2018:further discussion.
   Three Months Ended June 30, 2018
  Under ASC 606 Under ASC 605 Increase % Increase
  (In thousands)  
Revenues        
Crude oil 
$229,798
 
$229,658
 
$140
 0.1%
Natural gas liquids 21,269
 20,139
 1,130
 5.6%
Natural gas 12,906
 12,272
 634
 5.2%
Total revenues 263,973
 262,069
 1,904
 0.7%
         
Costs and Expenses        
Lease operating 35,151
 33,247
 1,904
 5.7%
         
Income Before Income Taxes 
$35,792
 
$35,792
 
$—
 %
   Six Months Ended June 30, 2018
  Under ASC 606 Under ASC 605 Increase % Increase
  (In thousands)  
Revenues        
Crude oil 
$424,717
 
$424,452
 
$265
 0.1%
Natural gas liquids 38,171
 36,235
 1,936
 5.3%
Natural gas 26,365
 25,159
 1,206
 4.8%
Total revenues 489,253
 485,846
 3,407
 0.7%
         
Costs and Expenses        
Lease operating 74,424
 71,017
 3,407
 4.8%
         
Income Before Income Taxes 
$63,603
 
$63,603
 
$—
 %
Changes to crude oil, NGL, and natural gas revenues and lease operating expense are due to the conclusion that the Company 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 control are included in lease operating expense.3. Revenue Recognition
The Company’s revenues are comprised solely of revenues from customers and include the sale of crude oil, NGLs, and natural gas. The Company believes that the disaggregation of revenue into these three major product types appropriately depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors based on ourits 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 June 30, 20182019 and December 31, 2017,2018, receivables from contracts with customers were $87.1$76.9 million and $85.6$77.1 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.operations.
Crude oil sales. Crude oil production is primarily sold at the wellhead at an agreed upon index price, net of pricing 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 transaction and has concluded it is the principal and the ultimate third party is the customer. Revenue is recognized on a gross basis, with gathering, processing and transportation fees presented in “Lease operating expense” in the consolidated statements of income as the Company maintains control throughout processing.

Transaction Price Allocated to Remaining Performance Obligations. The Company applied the practical expedient in ASC 606 exempting the disclosure of the transaction price allocated to remaining performance obligations if the variable consideration is allocated entirely to a wholly unsatisfied performance obligation. Each unit of product typically represents a separate performance obligation, therefore, future volumes are wholly unsatisfied and disclosure of the transaction price allocated to remaining performance obligations is not required.
Recently Adopted Accounting Pronouncements
Business Combinations. In January 2017, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition4. Acquisitions and Divestitures 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 divestitures) of assets or businesses. Effective January 1, 2018, the Company adopted ASU 2017-01 using the prospective methodOil and will apply the clarified definition of a business to future acquisitionGas Properties
2019 Acquisitions and 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 using the retrospective approach as prescribed by ASU 2016-15. There were no changes to the statement of cash flows as a result of adoption.
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 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.Divestitures
The Company is in the process of reviewing and determining the contracts to which ASU 2016-02 applies with the assistance of a third party consultant. These include contracts such 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 the new 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 right-of-use (“ROU”) assets and corresponding lease liabilities, (ii) increases in depreciation, depletion and amortization and interest expense, (iii) decreases in lease operating and general and administrative expense and (iv) additional 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 Companydid not to reassess contracts that commenced prior to adoption, to continue applying its current accounting policy for land easements, and not to recognize ROU assetshave any material acquisitions or lease liabilities for short-term leases. The Company plans to adopt the guidance on the effective date of January 1, 2019. As permitted by ASU No. 2018-11, Leases (Topic 842): Targeted Improvements, the Company does not expect to adjust comparative-period financial statements.
Other than as disclosed above or in the Company’s 2017 Form 10-K, there are no other accounting standard updates applicable to the Company that would have a material effect on the Company’s consolidated financial statements and related disclosures that have been issued but not yet adopted by the Company as of June 30, 2018, and through the filing of this report.

Net Income Attributable to Common Shareholders Per Common Share
Supplemental net income attributable to common shareholders per common share information is provided below:
   Three Months Ended
June 30,
  Six Months Ended
June 30,
  2018 2017 2018 2017
  
(In thousands, except
per share amounts)
Net Income Attributable to Common Shareholders 
$30,095
 
$56,306
 
$44,838
 
$96,327
Basic weighted average common shares outstanding 82,058
 65,767
 81,802
 65,479
Effect of dilutive instruments 1,795
 141
 1,438
 387
Diluted weighted average common shares outstanding 83,853
 65,908
 83,240
 65,866
Net Income Attributable to Common Shareholders Per Common Share        
Basic 
$0.37
 
$0.86
 
$0.55
 
$1.47
Diluted 
$0.36
 
$0.85
 
$0.54
 
$1.46
The table below presents the a reconciliation of the basic weighted average common shares outstanding to diluted weighted average common shares outstandingdivestitures for the three and six months ended June 30, 2019. See “Note 1. Nature of Operations” for details of the proposed Merger which was announced on July 15, 2019.
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, paid $183.4 million upon initial closing on October 17, 2018, and 2017:
   Three Months Ended
June 30,
  Six Months Ended
June 30,
  2018 2017 2018 2017
  (In thousands)
Basic weighted average common shares outstanding 82,058
 65,767
 81,802
 65,479
Dilutive unvested restricted stock awards and units 833
 141
 640
 387
Dilutive unvested performance shares 134
 
 158
 
Dilutive exercisable common stock warrants 828
 
 640
 
Diluted weighted average common shares outstanding 83,853
 65,908
 83,240
 65,866
received $8.3 million as a post-closing adjustment on March 28, 2019, for an aggregate purchase price of $196.6 million.
The table below presentsDevon Acquisition was accounted for as a summarybusiness 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 common shares outstanding that were excluded fromoil and gas properties. Significant inputs into the computationcalculation included future commodity prices, estimated volumes of dilutedoil 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 following table presents the preliminary 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
$216
Oil and gas properties
Proved properties47,118
Unproved properties150,253
Total oil and gas properties
$197,371
Total assets acquired
$197,587
Liabilities
Revenues and royalties payable
$786
Asset retirement obligations170
Total liabilities assumed
$956
Net Assets Acquired
$196,631


The results of operations for the Devon Acquisition have been included in the Company’s consolidated statements of income since the October 17, 2018 closing date, including total revenues and net income attributable to common shareholders per common share for the three and six months ended June 30, 2018 and 2017, as their inclusion would be anti-dilutive:
   Three Months Ended
June 30,
  Six Months Ended
June 30,
  2018 2017 2018 2017
  (In thousands)
Anti-dilutive unvested restricted stock awards and units 16
 101
 17
 16
Anti-dilutive unvested performance shares 
 108
 2
 62
Anti-dilutive exercisable common stock warrants 
 
 
 
Total anti-dilutive 16
 209
 19
 78
3. Acquisitions and Divestitures of Oil and Gas Properties
Acquisitions
ExL Acquisition. On August 10, 2017, the Company closed on the acquisition of oil and gas properties located in the Delaware Basin in Reeves and Ward Counties, Texas (the “ExL Properties”) from ExL Petroleum Management, LLC and ExL Petroleum Operating Inc. (together “ExL”) for aggregate cash consideration of $679.8 million (the “ExL Acquisition”). See “Note 10. Derivative Instruments” for information regarding the contingent consideration arrangement associated with the ExL Acquisition.


The consolidated statements of income for the three and six months ended June 30, 2018 include total revenues and net income attributable to common shareholders from the ExL Acquisition, representing activity of the acquired properties2019 as shown in the table below:
  Three Months Ended
June 30, 2019
 Six Months Ended
June 30, 2019
  (In thousands)
Total revenues 
$4,342
 
$8,718
     
Net Income Attributable to Common Shareholders 
$2,020
 
$4,716

   Three Months Ended  Six Months Ended
  June 30, 2018
  (In thousands)
Total revenues 
$52,771
 
$96,239
     
Net income attributable to common shareholders 
$42,048
 
$76,851
Divestitures
Eagle Ford.Ford Divestiture. On January 31, 2018,December 11, 2017, the Company soldentered 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 to EP Energy E&P Company, L.P. The Company received aggregate net proceeds of $245.7 million, which representsfor an agreed upon price of $245.0 million, plus purchase price adjustments, which were primarily related to the net cash flows from thewith an effective date of October 1, 2017, subject to theadjustment and customary terms and conditions. The Company received $24.5 million as a deposit on December 11, 2017, $211.7 million upon closing date.
Niobrara.Onon January 31, 2018, $10.0 million for leases that were not conveyed at closing on February 16, 2018, and paid $0.5 million as a post-closing adjustment on July 19, 2018, for aggregate net proceeds of $245.7 million.
Niobrara Divestiture.On November 20, 2017, the Company soldentered into a purchase and sale agreement to sell substantially all of its assets in the Niobrara Formation. EstimatedFormation 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 as a post-closing adjustment on August 14, 2018, for aggregate net proceeds are $134.7 million, subjectof $135.6 million. As part of this divestiture, the Company agreed to post-closing adjustments. See “Note 10. Derivative Instruments” for information regarding thea contingent consideration arrangement associated with this divestiture.(the “Contingent Niobrara Consideration”), which was determined to be an embedded derivative. See “Note 13. Derivative Instruments” and “Note 14. Fair Value Measurements” for further discussion.
The aggregate net proceeds for each of the 2018 divestitures discussed above were recognized as a reduction of proved oil and gas properties.
Marcellus. Effective August 2008, the Company’s wholly-owned subsidiary, Carrizo (Marcellus) LLC, entered into a joint ventureproperties 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”). As of June 30, 2018, the Avista Marcellus joint venture holds no material assetsgain or obligations, has no interest in any wells or leases, and intends to divest all remaining immaterial assets. 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 six months ended June 30, 2018. Concurrently with the sale of the remaining immaterial assets, the Avista Marcellus joint venture and associated joint venture agreements will terminate.
Steven A. Webster, Chairman of the Company’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.loss recognized.
4.5. Property and Equipment, Net
As of June 30, 20182019 and December 31, 2017,2018, total property and equipment, net consisted of the following:
  June 30,
2019
 December 31,
2018
  (In thousands)
Oil and gas properties, full cost method    
Proved properties 
$6,685,543
 
$6,278,321
Accumulated depreciation, depletion and amortization and impairments (4,098,202) (3,944,851)
Proved properties, net 2,587,341
 2,333,470
Unproved properties, not being amortized    
Unevaluated leasehold and seismic costs 580,369
 608,830
Capitalized interest 76,607
 65,003
Total unproved properties, not being amortized 656,976
 673,833
Other property and equipment 30,580
 29,191
Accumulated depreciation (19,392) (17,970)
Other property and equipment, net 11,188
 11,221
Total property and equipment, net 
$3,255,505
 
$3,018,524
  June 30,
2018
 December 31,
2017
  (In thousands)
Oil and gas properties, full cost method    
Proved properties 
$5,744,434
 
$5,615,153
Accumulated depreciation, depletion and amortization and impairments (3,784,483) (3,649,806)
Proved properties, net 1,959,951
 1,965,347
Unproved properties, not being amortized    
Unevaluated leasehold and seismic costs 539,836
 612,589
Capitalized interest 58,056
 47,698
Total unproved properties, not being amortized 597,892
 660,287
Other property and equipment 27,223
 25,625
Accumulated depreciation (16,641) (15,449)
Other property and equipment, net 10,582
 10,176
Total property and equipment, net 
$2,568,425
 
$2,635,810

Average depreciation, depletion and amortization (“DD&A”) per Boe of proved properties was $13.74$13.28 and $12.43$13.74 for the three months ended June 30, 20182019 and 2017,2018, respectively, and $13.73$13.28 and $12.55$13.73 for the six months ended June 30, 20182019 and 2017,2018, respectively.
The Company capitalized internal costs of employee compensation and benefits, including stock-based compensation, directly associated with acquisition, exploration, and development activities totaling $6.1$3.8 million and $1.9$6.1 million for the three months

ended June 30, 20182019 and 2017,2018, respectively, and $12.7$12.9 million and $7.3$12.7 million for the six months ended June 30, 20182019 and 2017,2018, 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 $8.7

$8.6 million and $4.0$8.7 million for the three months ended June 30, 20182019 and 2017,2018, respectively, and $19.1$17.6 million and $7.8$19.1 million for the six months ended June 30, 20182019 and 2017,2018, respectively.
5.6. Leases
The Company determines if an arrangement is a lease at inception of the contract and, if the contract is determined to be a lease, classifies the lease as an operating or financing lease. The Company recognizes an operating or financing lease on its consolidated balance sheets as a lease liability, which represents the present value of the Company’s obligation to make lease payments arising from the lease, with a related ROU asset, which represents the Company’s right to use the underlying asset for the lease term. The Company’s operating leases typically do not provide an implicit interest rate, therefore, the Company utilizes its incremental borrowing rate to calculate the present value of the lease payments based on information available at inception of the contract.
Lease expense for operating leases is recognized on a straight-line basis over the lease term. Lease expense for financing leases is comprised of interest expense on the financing lease liability and the amortization of the associated ROU asset, which is recognized on a straight-line basis over the lease term. Variable lease expense that is not dependent on an index or rate is not included in the operating or financing lease liability or ROU asset and is recognized in the period in which the obligation for those payments is incurred.
Types of Leases
The Company currently has leases associated with contracts for drilling rigs, office space, and the use of well equipment, vehicles, information technology infrastructure, and other office equipment, with the significant lease types described in more detail below.
Drilling Rigs. The Company enters into contracts for drilling rigs with third parties to support its development plan. These contracts are typically for one to three years and can be extended upon mutual agreement with the third party by providing written notice at least thirty days prior to the end of the primary contractual term. The Company exercises its discretion in choosing whether or not to extend these contracts on a drilling rig by drilling rig basis as a result of evaluating the conditions that exist at the time the contract expires, such as availability of drilling rigs and the Company’s development plan. The Company has determined that it cannot conclude with reasonable certainty that it will choose to extend the contract past its primary term. As such, the Company uses the primary term in its calculation of the lease liability and ROU asset. The Company classifies its drilling rigs as operating leases and capitalizes the costs of the drilling rigs to oil and gas properties.
Office Space. The Company leases office space from third parties for its corporate office and certain field locations. These leases have non-cancelable terms between one to fifteen years. The Company has determined that it cannot conclude with reasonable certainty that it will exercise any option to extend the contract past the non-cancelable term. As such, the Company uses the non-cancelable term in its calculation of the lease liability and ROU asset. The Company classifies its leases for office space as operating leases with the costs recognized as “General and administrative, net” in its consolidated statements of income.
Well Equipment. The Company rents compressors from third parties to facilitate the flow of production from its drilling operations to market. These contracts range from less than one year to three years for the primary term and continue thereafter on a month to month basis subject to cancellation by either party with thirty days notice. The Company classifies the compressors as operating leases with a lease term equal to the primary term for those contracts that have a primary term greater than one year. After the primary term, each party has a substantive right to terminate the lease, therefore, enforceable rights and obligations do not exist subsequent to the primary term. For those contracts that are less than one year, the Company has concluded that they represent short-term operating leases and therefore, an operating lease liability and ROU asset is not recorded in the consolidated balance sheets. These lease payments are recognized as “Lease operating expense” in the Company’s statements of income.
The tables below, which present the components of lease costs, supplemental balance sheet information, and supplemental cash flow information, are presented on a gross basis. Other joint owners in the properties operated by the Company generally pay for their working interest share of costs associated with drilling rigs and well equipment.

The table below presents the components of the Company’s lease costs for the three and six months ended June 30, 2019.
   Three Months Ended June 30, 2019 Six Months Ended June 30, 2019
  (In thousands)
Components of Lease Costs    
Finance lease costs    
Amortization of right-of-use assets (1)
 
$410
 
$784
Interest on lease liabilities (2)
 131
 276
Operating lease costs (3)
 8,700
 22,780
Short-term lease costs (4)
 245
 463
Variable lease costs (5)
 50
 152
Total lease costs 
$9,536
 
$24,455

(1)Included as a component of “Depletion, depreciation and amortization” in the consolidated statements of income.
(2)Included as a component of “Interest expense, net” in the consolidated statements of income.
(3)
For the three and six months ended June 30, 2019, approximately $6.1 millionand$17.6 million are costs associated with drilling rigs and are capitalized to “Oil and gas properties” in the consolidated balance sheets and the other remaining operating lease costs are components of “General and administrative, net” and “Lease operating expense” in the consolidated statements of income.
(4)Short-term lease costs are primarily associated with certain well equipment that have lease terms for less than one year and are components of “Lease operating expense” in the consolidated statements of income.
(5)Variable lease costs include additional payments that were not included in the initial measurement of the lease liability and related ROU asset for lease agreements with terms greater than 12 months. Variable lease costs primarily consist of incremental usage associated with drilling rigs.
The table below presents supplemental balance sheet information for the Company’s leases as of June 30, 2019.
June 30, 2019
(In thousands)
Leases
Operating leases:
Operating lease ROU assets
$64,615
Current operating lease liabilities
$34,049
Long-term operating lease liabilities36,526
Total operating lease liabilities
$70,575
Financing leases:
Other property and equipment, at cost
$7,810
Accumulated depreciation(5,170)
Other property and equipment, net
$2,640
Current financing lease liabilities (1)

$1,918
Long-term financing lease liabilities (2)
1,034
Total financing lease liabilities
$2,952

(1)Included in “Other current liabilities” in the consolidated balance sheets.
(2)Included in “Other long-term liabilities” in the consolidated balance sheets.

The table below presents supplemental cash flow information for the Company’s leases for the six months ended June 30, 2019.
Six Months Ended June 30, 2019
(In thousands)
Supplemental Cash Flow Information
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases
$5,338
Investing cash flows from operating leases
$22,896
Operating cash flows from financing leases
$276
Financing cash flows from financing leases
$879
ROU assets obtained in exchange for lease liabilities
Operating leases
$9,404
Financing leases
$1,082

The table below presents the weighted average remaining lease terms and weighted average discount rates for the Company’s leases as of June 30, 2019.
June 30, 2019
Weighted Average Remaining Lease Term (In years)
Operating leases5.1 years
Financing leases2.3 years
Weighted Average Discount Rate
Operating leases8.0%
Financing leases12.9%

The table below presents the maturity of the Company’s lease liabilities as of June 30, 2019.
  Operating Leases Financing Leases
  (In thousands)
July - December 2019 
$20,842
 
$1,113
2020 27,856
 1,475
2021 7,726
 275
2022 3,697
 234
2023 3,680
 232
2024 and Thereafter 21,608
 39
Total lease payments 85,409
 3,368
Less: Imputed interest (14,834) (416)
Total lease liabilities 
$70,575
 
$2,952

7. 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 the estimated annual income or loss attributable to the tax jurisdictions in which the Company operates.they occur.

The Company’s income tax expense differs(expense) benefit differed from the income tax expense(expense) benefit computed by applying the U.S. federal statutory corporate income tax rate of 21% for the three and six months ended June 30, 20182019 and 35% for the three and six months ended June 30, 2017,2018, to income before income taxes as follows:
   Three Months Ended June 30, Six Months Ended
June 30,
  2019 2018 2019 2018
  (In thousands)
Income before income taxes 
$109,784
 
$35,792
 
$81,752
 
$63,603
Income tax expense at the U.S. federal statutory rate (23,055) (7,517) (17,168) (13,357)
State income tax expense, net of U.S. federal income tax benefit (874) (487) (626) (806)
Tax deficiencies related to stock-based compensation (176) (16) (2,114) (2,542)
(Recapture) release of valuation allowance (1,423) 
 177,723
 
Decrease in valuation allowance due to current period activity 23,211
 8,048
 19,273
 16,449
Other 18
 (511) 8
 (546)
Income tax (expense) benefit 
($2,299) 
($483) 
$177,096
 
($802)

   Three Months Ended
June 30,
  Six Months Ended
June 30,
  2018 2017 2018 2017
  (In thousands)
Income before income taxes 
$35,792
 
$56,306
 
$63,603
 
$96,327
Income tax expense at the statutory rate (7,517) (19,707) (13,357) (33,714)
State income tax expense, net of U.S. federal income taxes (487) (1,017) (806) (1,727)
Tax shortfalls from stock-based compensation expense (16) (164) (2,542) (2,756)
Decrease in deferred tax assets valuation allowance 8,048
 20,948
 16,449
 38,317
Other (511) (60) (546) (120)
Income tax expense 
($483) 
$—
 
($802) 
$—
Deferred Tax Asset Valuation Allowance
Significant changes in the Company’s operations, including the ExL Acquisition in the Delaware Basin in the third quarter of 2017 and divestitures of substantially all of the Company’s assets in the Utica and Marcellus in the fourth quarter of 2017 and the Niobrara in the first quarter of 2018, resulted in changes to the Company’s state apportionment for estimated stateThe deferred tax liabilities. As a resultasset valuation allowance was $45.9 million and $242.9 million as of these changes,June 30, 2019 and December 31, 2018, respectively. Throughout 2018, the Company recorded currentmaintained a full valuation allowance against its deferred tax assets based on its conclusion, considering all available evidence (both positive and negative), that it was more likely than not that the deferred state income tax expenseassets would not be realized. A significant item of $0.5 million and $0.8 million forobjective negative evidence considered was the three and six months ended June 30, 2018, respectively.
Tax Cuts and Jobs Act
On December 22, 2017,cumulative pre-tax loss incurred over 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 thethree-year period of enactment of the Act, the SEC issued Staff Accounting Bulletin 118 which allowed the Company to provide a provisional estimate of the impacts of the Act in earnings for the year ended December 31, 2017 and also provided a one-year measurement period in which the Company would record additional impacts from the enactment of the Act as they are identified. As of June 30, 2018, the Company has not made any changesprimarily due 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, such as the limitation on executive compensation for subsequent events and additional guidance provided within the one year measurement period.
Deferred Tax Assets Valuation Allowance
Primarily as a result of the impairments of proved oil and gas properties recognized beginning in the third quarterfirst three quarters of 20152016. As of March 31, 2019 and continuing through the third quarter of 2016,June 30, 2019, the Company hadis in a cumulative historical three yearthree-year pre-tax lossincome position. Based on this factor, as well as other positive evidence including projected future taxable income for the current and a net deferred tax asset position at June 30, 2018. The Company then assessed the realizability of its deferred tax assets and, beginning in the third quarter of 2015 and continuing through the second quarter of 2018,future years, the Company concluded that it wasis more likely than not that the deferred tax assets will notwould be realized and that areleased $179.1 million of the valuation allowance was requiredduring the first quarter of 2019. During the second quarter of 2019, the Company reduced the prior valuation allowance release by $1.4 million as a result of updating the Company’s forecasted taxable income for 2019 bringing the cumulative release of the valuation allowance to reduce$177.7 million. The reduction of the netrelease of the valuation allowance in the second quarter of 2019 is recognized as a decrease in deferred tax assets to zero. Asand an increase in income tax expense, while the cumulative release of June 30, 2018 and December 31, 2017, the valuation allowance was $316.5 million and $333.0 million, respectively. See

the table above for changes in the valuation allowance for the three and six months ended June 30, 20182019 is recognized as an increase in deferred tax assets and 2017, which primarily related to activity during each respective period and, for the three and six months ended June 30, 2017, the effect of adopting ASU 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting.an income tax benefit.
6.8. Long-Term Debt
Long-term debt consisted of the following as of June 30, 20182019 and December 31, 2017:2018:
  June 30,
2019
 December 31,
2018
  (In thousands)
Senior Secured Revolving Credit Facility due 2022 
$841,328
 
$744,431
6.25% Senior Notes due 2023 650,000
 650,000
Unamortized debt issuance costs for 6.25% Senior Notes (6,180) (6,878)
8.25% Senior Notes due 2025 250,000
 250,000
Unamortized debt issuance costs for 8.25% Senior Notes (3,730) (3,962)
Long-term debt 
$1,731,418
 
$1,633,591
  June 30,
2018
 December 31,
2017
  (In thousands)
Senior Secured Revolving Credit Facility due 2022 
$485,000
 
$291,300
7.50% Senior Notes due 2020 130,000
 450,000
Unamortized premium for 7.50% Senior Notes 139
 579
Unamortized debt issuance costs for 7.50% Senior Notes (1,095) (4,492)
6.25% Senior Notes due 2023 650,000
 650,000
Unamortized debt issuance costs for 6.25% Senior Notes (7,554) (8,208)
8.25% Senior Notes due 2025 250,000
 250,000
Unamortized debt issuance costs for 8.25% Senior Notes (4,183) (4,395)
Other long-term debt due 2028 
 4,425
Long-term debt 
$1,502,307
 
$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 June 30, 2018,2019, had a borrowing base of $1.0$1.35 billion, with an elected commitment amount of $900.0 million,$1.25 billion, and borrowings outstanding of $485.0$841.3 million at a weighted average interest rate of 3.74%4.14%. 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. 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 divestiture in the Eagle Ford Shale discussed above, 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.
On May 4, 2018,March 27, 2019, the Company entered into the twelfthfourteenth amendment to its credit agreement governing the revolving credit facility to, among other things (i) establish the borrowing base at $1.0$1.35 billion, with an elected commitment amount of $900.0 million,$1.25 billion, until the next redetermination thereof, (ii) reduce the applicable margin for Eurodollar loans from 2.0%-3.0% to 1.5%-2.5%, depending on level of facility usage, (iii) amend the covenant limiting paymentdefinition of dividendsCurrent Ratio, and distributions on equity to increase the Company’s ability to make dividends and distributions on its equity interests and (iv)(iii) amend certain other provisions, in each case as set forth therein.definitions and provisions.
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 expense, net” in the consolidated statements of income.
Ratio of Outstanding Borrowings to Lender Commitments 
Applicable Margin for
Base Rate Loans
 
Applicable Margin for
Eurodollar Loans
 Commitment Fee
Less than 25% 0.25% 1.25% 0.375%
Greater than or equal to 25% but less than 50% 0.50% 1.50% 0.375%
Greater than or equal to 50% but less than 75% 0.75% 1.75% 0.500%
Greater than or equal to 75% but less than 90% 1.00% 2.00% 0.500%
Greater than or equal to 90% 1.25% 2.25% 0.500%
Ratio of Outstanding Borrowings to Lender Commitments 
Applicable Margin for
Base Rate Loans
 
Applicable Margin for
Eurodollar Loans
 Commitment Fee
Less than 25% 0.50% 1.50% 0.375%
Greater than or equal to 25% but less than 50% 0.75% 1.75% 0.375%
Greater than or equal to 50% but less than 75% 1.00% 2.00% 0.500%
Greater than or equal to 75% but less than 90% 1.25% 2.25% 0.500%
Greater than or equal to 90% 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 premiums and debt issuance costs and is net of cash and cash equivalents, EBITDA will beis calculated based on the last four fiscal quarters after giving pro forma effect to EBITDA for material acquisitions and divestitures of oil and gas properties, and the Current Ratio includes an add back of the unused portion of lender commitments.commitments and excludes the Contingent ExL Consideration, which is described in “Note 13. Derivative Instruments.” As of June 30, 2018,2019, the ratio of Total Debt to EBITDA was 2.532.40 to 1.00 and the Current Ratio was 1.491.73 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 subjectDue to customary eventsthe proposed Merger, our regular redetermination scheduled for the fall of default, including in connection with a change in control. If an event of default occurs and is continuing, the lenders may elect2019 was postponed 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).occur on or about February 14, 2020.
Redemptions of 7.50% Senior Notes
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. UponThe Company paid a total of $336.9 million upon the redemptions, the Company paid $336.9 million, which included redemption premiums of $6.0 million as well asand accrued and unpaid interest of $10.9 millionmillion. The redemptions were funded primarily from the last interest payment date up to, but not including,net proceeds received from the redemption date.divestitures in Eagle Ford and Niobrara in the first quarter of 2018. See “Note 4. 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 paid to redeem the notes and non-cash charges of $2.7 million attributable to the write-off of associated unamortized premiumpremiums and debt issuance costs.
Redemptioncosts of Other Long-Term Debt$2.7 million.
On May 3, 2018, the Company redeemed the remaining $4.4 million outstanding aggregate principal amount of its 4.375% Convertible Senior Notes due 2028 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 millionmillion.
Subsidiary Guarantors
The Company’s Senior Notes are guaranteed by its subsidiary guarantors, which are all 100% owned by the parent company. The guarantees are full and unconditional and joint and several. Carrizo Oil & Gas, Inc., as the parent company, has no independent assets and operations. Any subsidiaries of the parent company, other than the subsidiary guarantors, are minor. In addition, there are no significant restrictions on the ability of the parent company or any guarantor to obtain funds from the last interest payment date up to, but not including, the redemption date.its subsidiaries by dividend or loan.
7.
9. 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.

8.10. Preferred Stock and Common Stock Warrants
See “Note 1. Nature of Operations” for discussion of the impact to the Preferred Stock as a result of the proposed Merger.
On August 10, 2017, the Company closed on the issuance and sale 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”)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, to certain funds managed or sub-advised by GSO Capital Partners LP and its affiliates (the “GSO Funds”).affiliates.
The Preferred Stock is presented as temporary equity in the consolidated balance sheets with the issuance date fair value accreted to the initial liquidation preference using the effective interest method. The Warrants are presented in “Additional paid-in capital” in the consolidated balance sheets at their issuance date fair value.
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
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 table below sets forth a reconciliation of changes in the carrying amount of Preferred Stock outstanding is not mandatorily redeemable, but can be redeemed atfor the Company’s optionsix months ended June 30, 2019 and in certain circumstances, at the option2018.
   Six Months Ended June 30,
  2019 2018
  (In thousands)
Preferred Stock, beginning of period 
$174,422
 
$214,262
Redemption of Preferred Stock 
 (42,897)
Accretion on Preferred Stock 1,634
 1,493
Preferred Stock, end of period 
$176,056
 
$172,858

Loss on Redemption of the holders of the Preferred Stock. Stock
On or prior to August 10, 2018, the Company had 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
During the first quarter of 2018, the Company redeemed 50,000 shares of Preferred Stock, representing 20% of the issued and outstanding Preferred Stock. Upon redemption, the Company paidStock, for $50.5 million, which consistedconsisting of $1,000.00 per share of Preferred Stock redeemed, plusthe $50.0 million redemption price and accrued and unpaid dividends withof $0.5 million. The Company recognized a portion$7.1 million loss on the redemption due to the excess of the proceeds from$50.0 million redemption price over the divestitures of oil and gas properties. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for information regarding divestitures.
In addition, at any time on or prior to August 10, 2020, the Company may redeem all or part$42.9 million redemption date carrying value of the Preferred Stock in cash at a redemption premiumStock.

11. Stock-Based Compensation
See “Note 1. Nature 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 partOperations” for discussion of the Preferred Stock in cash at redemption premiums, as presented in the table below, plus accrued but unpaid dividends.
PeriodPercentage
After August 10, 2020 but on or prior to August 10, 2021104.4375%
After August 10, 2021 but on or prior to August 10, 2022102.21875%
After August 10, 2022100%
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 control.
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 directorsimpact to the Company’s Board of Directors;restricted stock awards 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 is presented as temporary equity in the consolidated balance sheets with the issuance date fair value accreted to the redemption value using the effective interest method.
The table below summarizes changes in the carrying amount of Preferred Stock for the six months ended June 30, 2018:
June 30, 2018
(In thousands)
Preferred Stock, beginning of period
$214,262
Redemption of preferred stock(42,897)
Accretion on Preferred Stock1,493
Preferred Stock, end of period
$172,858
Preferred Stock Dividends, Accretion, units, performance shares, and Loss on Redemption
Dividends, accretion, and loss on redemption of preferred stock are presented in the consolidated statements of income as a reduction of net income to compute net income attributable to common shareholders.
For the three months ended June 30, 2018, the Company declared and paid $4.5 million of cash dividends to the holders of record of the Preferred Stock on June 15, 2018. For the six months ended June 30, 2018, the Company declared and paid $9.3 million of cash dividends to the holders of the Preferred Stock on June 15, 2018 and March 15, 2018.
For the three and six months ended June 30, 2018, the Company recorded accretion on Preferred Stock of $0.7 million and $1.5 million, respectively.
As a result of the redemption described above, the Company recorded a loss on redemption of preferred stock of $7.1 million, which included $0.1 million of direct costs incurredCash SARs as a result of the redemptionproposed Merger.
At the Company’s annual meeting on May 16, 2019, the shareholders approved the proposal to amend and a non-cash charge of $7.0 million attributable to the difference between $50.0 million, which was the consideration transferred to the holders of the Preferred Stock excluding accrued and unpaid dividends, and $42.9 million, which was 20% of the carrying value of the Preferred Stock on the date of redemption.
9. Stock-Based Compensation
Equity-Based Incentive Awards Plans
The Company grants equity-based incentive awards underrestate the 2017 Incentive Plan of Carrizo Oil & Gas, Inc. (the “2017“A&R 2017 Incentive Plan”) and,which included an increase to the Carrizo Oil & Gas, Inc. Cash-Settled Stock Appreciation Rights Plan (“Cash SAR Plan”). Thenumber of shares available for issuance under the A&R 2017 Incentive Plan replaced the Incentive PlanPlan. As of Carrizo Oil & Gas, Inc., as amended and restated effective May 15, 2014 (the “Prior Incentive Plan”) and, from the effective date of the 2017 Incentive Plan, no further awards may be granted under the Prior Incentive 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 can grant restricted stock awards and units, stock appreciation rights that can be settled inJune 30, 2019, there were 3,164,691 shares of common stock or cash atavailable for grant under the option of theA&R 2017 Incentive Plan assuming all future grants will be full value stock awards. The Company performance shares, stock options, and cash awards to employees, independent contractors, and non-employee directors. Under the Cash SAR Plan, the Company can granthas not granted stock appreciation rights that may only be settled in cash (“Cash SARs”) 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 (the “Maximum Share Limit”). Each restricted stock award, restricted stock unit, or 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 (“Stock SAR”) granted underand has no outstanding stock options. See “Note 11. Stock-Based Compensation” of the 2017 Incentive Plan counts as 1.00 share againstNotes to Consolidated Financial Statements in the Maximum Share Limit. Each stock appreciation right to be settled in shares2018 Annual Report for details of common stock or cash (“Incentive SAR”) granted under the 2017 Incentive Plan counts as 1.00 share against the Maximum Share Limit up to the date the Company, if it so chooses, affirmatively elects to settle the stock appreciation right in cash. Each stock appreciation right to be settled in cash (“Incentive Cash SAR”) granted under the 2017 Incentive Plan or Cash SAR does not count against the Maximum Share Limit. As of June 30, 2018, there were 326,774 common shares remaining available for grant under the 2017 Incentive Plan.Company’s equity-based incentive plans.
Restricted Stock Awards and Units
As of June 30, 2018, unrecognized compensation costs related to unvested restricted stock awards and units was $30.5 million and will be recognized over a weighted average period of 2.2 years.
The table below summarizes restricted stock award and unit activity for the three and six months ended June 30, 2019 and 2018:
   Three Months Ended June 30,
  2019 2018
  Restricted Stock Awards and Units 
Weighted Average Grant Date
Fair Value
 Restricted Stock Awards and Units Weighted Average Grant Date
Fair Value
Unvested, beginning of period 3,320,060
 
$14.16
 2,263,830
 
$19.15
Granted 115,936
 
$11.90
 1,250
��
$15.43
Vested (52,639) 
$25.20
 (43,992) 
$25.76
Forfeited (47,464) 
$12.05
 (9,915) 
$18.04
Unvested, end of period 3,335,893
 
$13.94
 2,211,173
 
$19.02

 Restricted Stock Awards and Units 
Weighted Average Grant Date
Fair Value
 Six Months Ended June 30,
Unvested restricted stock awards and units, beginning of period 1,482,655
 
$28.07
 2019 2018
 Restricted Stock Awards and Units 
Weighted Average Grant Date
Fair Value
 Restricted Stock Awards and Units Weighted Average Grant Date
Fair Value
Unvested, beginning of period 2,266,667
 
$19.28
 1,482,655
 
$28.07
Granted 1,348,415
 
$14.68
 2,034,619
 
$11.06
 1,348,415
 
$14.68
Vested (608,904) 
$31.43
 (904,973) 
$20.91
 (608,904) 
$31.43
Forfeited (10,993) 
$19.17
 (60,420) 
$13.14
 (10,993) 
$19.17
Unvested restricted stock awards and units, end of period 2,211,173
 
$19.02
Unvested, end of period 3,335,893
 
$13.94
 2,211,173
 
$19.02

DuringGrant activity for the three months ended June 30, 2019 primarily consisted of restricted stock units to non-employee directors for their service for the 2019-2020 director term. These grants to the non-employee directors vest on the earlier of the date of the 2020 Annual Meeting of Shareholders and June 30, 2020. Grant activity for the six months ended June 30, 2018, the Company granted 1,348,415 restricted stock awards and units2019 primarily consistingconsisted of 1,343,412 restricted stock units to employees and independent contractors as part of itsthe annual grant of long-term equity incentive awards duringthat occurred in the first quarter of 2018.each of the years presented in the table above. These restricted stock units hadvest ratably over an approximate three-year period.
As a grant dateresult of the approval of the A&R 2017 Incentive Plan by shareholders, the Compensation Committee determined that the Company would settle the restricted stock units granted in the first quarter of 2019 in common stock rather than cash upon vesting. As such, the Company modified these restricted stock units, which were previously accounted for as liability awards to equity awards and reclassified the fair value of $19.7 million and will vest ratably over a three-year period.
Stock Appreciation Rights (“SARs”)
As of June 30, 2018, all outstanding SARs are either Cash SARs or Incentive Cash SARs and will be settled in cash. The liability for SARs as of June 30, 2018 was $8.7 million, all of which was classified as “Other current liabilities,”these awards to shareholders’ equity in the consolidated balance sheets.
The aggregate fair value of restricted stock awards and units that vested during the three months ended June 30, 2019 and 2018 was $0.7 million and $1.0 million, respectively, and $10.5 million and $9.9 million for the six months ended June 30, 2019 and 2018, respectively. As of December 31, 2017, the liability for SARs was $4.4 million, all of which was classified as “Other liabilities” in the consolidated balance sheets. UnrecognizedJune 30, 2019 and 2018, unrecognized compensation costs related to unvested SARs was $11.3restricted stock awards and units were $38.3 million as of June 30, 2018, and will$30.5 million, respectively, to be recognized over a weighted average period of 2.62.2 years.

Cash SARs
There was no activity for Cash SARs for the three months ended June 30, 2019 and 2018. The table below summarizes the activity for Cash SARs for the six months ended June 30, 2019 and 2018:
  Six Months Ended June 30,
  2019 2018
  Cash SARs 
Weighted
Average
Exercise
Prices
 
Weighted Average Remaining Life
(In years)
 Cash SARs Weighted
Average
Exercise
Prices
 Weighted Average Remaining Life
(In years)
Outstanding, beginning of period 1,330,924
 
$21.35
   714,238
 
$27.12
  
Granted 770,775
 
$10.98
   616,686
 
$14.67
  
Exercised 
 
$—
   
 
$—
  
Forfeited 
 
$—
   
 
$—
  
Expired 
 
$—
   
 
$—
  
Outstanding, end of period 2,101,699
 
$17.55
 4.9 1,330,924
 
$21.35
 4.8
Vested, end of period 919,800
 
$24.34
   543,018
 
$27.18
  
Vested and exercisable, end of period 
 
$24.34
 3.0 543,018
 
$27.18
 3.0
  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
 4.8 
$9.1
  
Vested, end of period 543,018
 
$27.18
      
Vested and exercisable, end of period 543,018
 
$27.18
 3.04 
$0.5
  

During the six months ended June 30, 2018, the Company granted 616,686 IncentiveGrant activity consisted of Cash SARs to certain employees and independent contractors, allas part of whichthe annual grant of long-term equity incentive awards that occurred in the first quarter of 2018 as parteach of the Company’s annual grant of long-term equity incentive awards. These Incentiveyears presented in the table above. The Cash SARs willgranted in the first quarter of 2019 and 2018 vest ratably over aan approximate three-year period and expire approximately seven years from the grant date.
The grant date fair value of the Incentive Cash SARs, calculated using the Black-Scholes-Merton option pricing model, was $4.6 million and $4.9 million.million for the six months ended June 30, 2019 and 2018. The following table summarizes the assumptions used to calculateand the resulting grant date fair value of the Incentive Cash SARs granted during the six months ended June 30, 2019 and 2018:
  Six Months Ended June 30,
  2019 2018
Expected term (in years) 6.1
 6.0
Expected volatility 56.0% 54.3%
Risk-free interest rate 2.6% 2.8%
Dividend yield % %
Grant date fair value per Cash SAR $6.00 $7.89

Grant Date Fair Value Assumptions
Expected term (in years)6.0
Expected volatility54.3%
Risk-free interest rate2.8%
Dividend yield%
Performance Shares
The aggregate intrinsic value of Cash SARs outstanding as of June 30, 2019 and 2018 was zero and $9.1 million, respectively, and the aggregate intrinsic value of Cash SARs vested and exercisable as of June 30, 2019 and 2018 was zero and $0.5 million. As of June 30, 2019 and December 31, 2018, the liabilities for Cash SARs were $2.1 million and $1.8 million, all of which was classified as “Other current liabilities,” in the respective consolidated balance sheets. As of June 30, 2019 and 2018, unrecognized compensation costs related to unvested performance shares was $2.9Cash SARs were $5.1 million and will$11.3 million, respectively, to be recognized over a weighted average period of 2.2 years.2.4 years and 2.6 years, respectively.

Performance Shares
There was no performance share activity for the three months ended June 30, 2019 and 2018. The table below summarizes performance share activity for the six months ended June 30, 2019 and 2018:
  Six Months Ended June 30,
  2019 2018
  
Target Performance Shares (1)
 
Weighted Average Grant Date
Fair Value
 
Target Performance Shares (1)
 Weighted Average Grant Date
Fair Value
Unvested, beginning of period 182,209
 
$27.01
 144,955
 
$47.14
Granted 130,302
 
$14.20
 93,771
 
$19.09
Vested at end of performance period (31,244) 
$35.71
 (49,458) 
$65.51
Did not vest at end of performance period (10,407) 
$35.71
 (7,059) 
$65.51
Forfeited 
 
$—
 
 
$—
Unvested, end of period 270,860
 
$19.51
 182,209
 
$27.01
  
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.
DuringGrant activity consisted of performance shares as part of the six months ended June 30, 2018, the Company granted 93,771 target performance sharesannual grant of long-term equity incentive awards to certain employees and independent contractors, all of whichthat occurred in the first quarter of 2018 as part of the Company’s annual grant of long-term equity incentive awards.2019 and 2018. Each performance share represents the right to receive one share of common stock, however, the number of performance shares that will vest 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-year performance period, the last day of which is also the vesting date.
Also duringThe following table presents the six months ended June 30, 2018, the Company vested 49,458 performance shares that were granted in 2015. As a resultresults of the Company’s final TSR ranking during the performance period, a multiplier of 88% was applied toperiods that ended during the 56,517 target performance shares that were granted in 2015, resulting in 7,059 performance shares that did not vest.six months ended June 30, 2019 and 2018:
The
  Six Months Ended June 30,
  2019 2018
Target performance shares granted 41,651 56,517
Multiplier 75% 88%
Performance shares vested 31,244 49,458
Performance shares that did not vest 10,407 7,059
Aggregate fair value of performance shares vested (In millions) $0.4 $0.8

For the six months ended June 30, 2019 and 2018, the grant date fair value of the performance shares, calculated using a Monte Carlo simulation, was $1.9 million and $1.8 million.million, respectively. The following table summarizes the assumptions used to calculateand the resulting grant date fair value ofper performance share for the performance shares grantedgrant activity during the six months ended June 30, 2018:2019:
  Six Months Ended June 30,
  2019 2018
Number of simulations 500,000 500,000
Expected term (in years) 3.1
 3.0
Expected volatility 58.2% 61.5%
Risk-free interest rate 2.5% 2.4%
Dividend yield % %
Grant date fair value per performance share $14.20 $19.09

Grant Date Fair Value Assumptions
Number of simulations500,000
Expected term (in years)3.0
Expected volatility61.5%
Risk-free interest rate2.4%
Dividend yield%
As of June 30, 2019 and 2018, unrecognized compensation costs related to unvested performance shares were $3.1 million and $2.9 million, respectively, to be recognized over a weighted average period of 2.1 years and 2.2 years, respectively.

Stock-Based Compensation Expense, Net
Stock-based compensation expense associated with restricted stock awards and units, Cash SARs, and performance shares, net of amounts capitalized, is reflected asincluded in “General and administrative, expense, net” in the consolidated statements of income.
The Company recognized the following stock-based compensation expense, net for the three and six months ended June 30, 20182019 and 2017:2018:
   Three Months Ended June 30, Six Months Ended
June 30,
  2019 2018 2019 2018
  (In thousands)
Restricted stock awards and units 
$5,358
 
$4,720
 
$10,181
 
$9,804
Cash SARs (426) 5,788
 334
 4,373
Performance shares 436
 406
 871
 963
  5,368
 10,914
 11,386
 15,140
Less: amounts capitalized to oil and gas properties (1,514) (3,708) (3,417) (4,416)
Total stock-based compensation expense, net 
$3,854
 
$7,206
 
$7,969
 
$10,724
   Three Months Ended
June 30,
  Six Months Ended
June 30,
  2018 2017 2018 2017
  (In thousands)
Restricted stock awards and units 
$4,720
 
$5,024
 
$9,804
 
$10,873
SARs 5,788
 (3,783) 4,373
 (7,469)
Performance shares 406
 574
 963
 1,280
  10,914
 1,815
 15,140
 4,684
Less: amounts capitalized to oil and gas properties (3,708) (233) (4,416) (1,088)
Total stock-based compensation expense, net 
$7,206
 
$1,582
 
$10,724
 
$3,596

10.12. Net Income Attributable to Common Shareholders Per Common Share
The following table summarizes the calculation of net income attributable to common shareholders per common share:
   Three Months Ended June 30, Six Months Ended
June 30,
  2019 2018 2019 2018
  (In thousands, except per share amounts)
Net Income 
$107,485
 
$35,309
 
$258,848
 
$62,801
Dividends on preferred stock (4,452) (4,474) (8,812) (9,337)
Accretion on preferred stock (833) (740) (1,634) (1,493)
Loss on redemption of preferred stock 
 
 
 (7,133)
Net Income Attributable to Common Shareholders 
$102,200
 
$30,095
 
$248,402
 
$44,838
         
Basic weighted average common shares outstanding 92,497
 82,058
 92,121
 81,802
Dilutive effect of restricted stock and performance shares 203
 967
 358
 798
Dilutive effect of common stock warrants 
 828
 
 640
Diluted weighted average common shares outstanding 92,700
 83,853
 92,479
 83,240
         
Net Income Attributable to Common Shareholders Per Common Share      
Basic 
$1.10
 
$0.37
 
$2.70
 
$0.55
Diluted 
$1.10
 
$0.36
 
$2.69
 
$0.54

The computation of diluted net income attributable to common shareholders per common share excluded restricted stock, performance shares and common stock warrants that were anti-dilutive. The following table presents the weighted average anti-dilutive securities for the periods presented:
   Three Months Ended June 30, Six Months Ended
June 30,
  2019 2018 2019 2018
  (In thousands)
Anti-dilutive restricted stock and performance shares 3,077
 16
 1,526
 19
Anti-dilutive common stock warrants 2,750
 
 2,750
 
Total weighted average anti-dilutive securities 5,827
 16
 4,276
 19

13. 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 sales 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 capital expenditure program and fixed costs.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 over-the-counter price swaps, three-way collars, basis swaps, and purchased and sold call options, and basis swaps, each of which areis described below.
Price Swaps: The Company receivesswaps 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 an index pricethe difference to the counterparty over specified periods for contracted volumes.counterparty.
Three-Way Collars: A three-way collar is a combinationThree-way collars 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 published index 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 index price, respectively.price. If the settlement price of the referenced index price is below the fixed sub-floor price, the Company receives the difference between the floor price and sub-floor price from the counterparty. If the settlement price of the referenced index is between the floor price plusand 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 settlement price of the referenced index price 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 and NYMEX Henry Hub for natural gas, as applicable. The index price the Company receives on its crude oil basis swaps is Argus WTI Cushing (“WTI Cushing”) plus or minus a fixed price differential and the index price it pays is Argus WTI Midland (“WTI Midland”) or Argus Light Louisiana Sweet (“LLS”). The index price the Company receives on its natural gas basis swaps is NYMEX Henry Hub minus a fixed price differential and the index price it pays is Platt’s Inside FERC West Texas Waha (“Waha”).
The Company has incurred premiums on certain of these contractsits commodity derivative instruments in order to obtain a higher floor price and/or higher ceiling price.
Basis Swaps: Basis swaps fix the price differential between a published index price and the applicable local index price under which our production is sold. For the Company’s Permian oil production, the basis swaps fix the price differential between the Midland WTI price and the Cushing WTI price and for the Company’s Eagle Ford oil production, the basis swaps fix the price differential between the LLS price and the Cushing WTI price.
Sold Call Options: These contracts give the counterparty 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 index price exceeds the fixed price of the call option, the Company pays the counterparty the excess. If the index price settles below the fixed price of the call option, no payment is due from either party. These contracts require the counterparty to pay premiums to the Company that represent the fair value of the call option as of the date of sale. All of the Company’s natural gas sold call options were executed contemporaneously with certain crude oil price swaps to increase the fixed price on those crude oil price swaps. Those certain crude oil price swaps settled prior to 2018.
Purchased Call Options: These contracts give the Company the right, but not the obligation, to buy contracted volumes from the counterparty over specified periods and prices in the future. At settlement, if the index price exceeds the fixed price of the call option, the counterparty pays the Company the excess. If the index 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 counterparty that represent the fair value of the call option as of the date of purchase. All of the Company’s purchased crude oil call options were executed contemporaneously with sold crude oil call options to increase the fixed price on a portion of the existing sold crude oil call options and therefore are presented on a net basis as “Net Sold Call Options” in the table below.

Premiums: In order to increase the fixed price on a portion of the Company’s existing sold call options, the Company incurred premiums on its purchased call options. Additionally, in order to obtain a higher floor price and/or ceiling price, the Company incurred premiums on certain of its three-way collars. Payment of these premiums are deferred until the applicable contracts settle on a monthly basis throughoutover 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.
The following table sets forth a summary of the Company’s outstanding crude oil derivative positions as
As of June 30, 20182019, the Company had the following outstanding commodity derivative instruments at weighted average contract volumes and prices:
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 3Q19 Price Swaps NYMEX WTI 5,000
 
$64.80
 
 
 
 
Crude oil 3Q19 Three-Way Collars NYMEX WTI 27,000
 
 
$41.67
 
$50.96
 
$74.23
 
Crude oil 3Q19 Basis Swaps LLS-WTI Cushing 6,000
 
 
 
 
 
$5.16
Crude oil 3Q19 Basis Swaps WTI Midland-WTI Cushing 9,100
 
 
 
 
 
($4.44)
Crude oil 3Q19 Sold Call Options NYMEX WTI 3,875
 
 
 
 
$81.07
 
                   
Crude oil 4Q19 Price Swaps NYMEX WTI 5,000
 
$64.80
 
 
 
 
Crude oil 4Q19 Three-Way Collars NYMEX WTI 27,000
 
 
$41.67
 
$50.96
 
$74.23
 
Crude oil 4Q19 Basis Swaps WTI Midland-WTI Cushing 9,200
 
 
 
 
 
($4.64)
Crude oil 4Q19 Sold Call Options NYMEX WTI 3,875
 
 
 
 
$81.07
 
                   
Crude oil 2020 Price Swaps NYMEX WTI 3,000
 
$55.06
 
 
 
 
Crude oil 2020 Three-Way Collars NYMEX WTI 12,000
 
 
$45.63
 
$55.63
 
$66.04
 
Crude oil 2020 Basis Swaps WTI Midland-WTI Cushing 10,658
 
 
 
 
 
($1.68)
Crude oil 2020 Sold Call Options NYMEX WTI 4,575
 
 
 
 
$75.98
 
                   
Crude oil 2021 Basis Swaps WTI Midland-WTI Cushing 8,000
 
 
 
 
 
$0.18
Period Type of Contract Index 
Volumes
(Bbls/d)
 Fixed Price ($/Bbl) Sub-Floor Price ($/Bbl) Floor Price ($/Bbl) Ceiling Price ($/Bbl)
2018              
Q3-Q4 Price Swaps NYMEX WTI 6,000
 
$49.55
 
$—
 
$—
 
$—
Q3-Q4 Three-Way Collars NYMEX WTI 24,000
 
 39.38
 49.06
 60.14
Q3-Q4 Basis Swaps 
LLS-Cushing WTI (1)
 18,000
 5.11
 
 
 
Q3-Q4 Basis Swaps 
Midland WTI-Cushing WTI (2)
 6,000
 (0.10) 
 
 
Q3-Q4 Net Sold Call Options NYMEX WTI 3,388
 
 
 
 71.33
2019              
Q1-Q4 Three-Way Collars NYMEX WTI 15,000
 
 41.00
 49.72
 62.48
Q1-Q2 Basis Swaps 
Midland WTI-Cushing WTI (2)
 3,000
 (3.83) 
 
 
Q3 Basis Swaps 
Midland WTI-Cushing WTI (2)
 3,500
 (4.18) 
 
 
Q4 Basis Swaps 
Midland WTI-Cushing WTI (2)
 6,000
 (3.71) 
 
 
Q1-Q4 Net Sold Call Options NYMEX WTI 3,875
 
 
 
 73.66
2020              
Q1-Q4 Net Sold Call Options NYMEX WTI 4,575
 
 
 
 75.98

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 3Q19 Basis Swaps Waha-NYMEX Henry Hub 42,500
 
 
 
 
 
($1.49)
Natural gas 3Q19 Sold Call Options NYMEX Henry Hub 33,000
   
 
 
$3.25
 
                   
Natural gas 4Q19 Basis Swaps Waha-NYMEX Henry Hub 42,500
 
 
 
 
 
($1.30)
Natural gas 4Q19 Sold Call Options NYMEX Henry Hub 33,000
   
 
 
$3.25
 
                   
Natural gas 2020 Basis Swaps Waha-NYMEX Henry Hub 29,541
 
 
 
 
 
($0.77)
Natural gas 2020 Sold Call Options NYMEX Henry Hub 33,000
   
 
 
$3.50
 
(1)The index price paid under these basis swaps is LLS and the index price received is Cushing WTI plus the fixed price differential.
(2)The index price paid under these basis swaps is Midland WTI and the index price received is Cushing WTI less the fixed price differential.
The following table sets forth a summary of the Company’s outstanding NGL derivative positions as of June 30, 2018 at weighted average contract prices:
Period Type of Contract Index 
Volumes
(Bbls/d)
 
Fixed Price
($/Bbl)
2018        
Q3-Q4 Price Swaps Ethane - OPIS Mont Belvieu Non-TET 2,200
 
$12.01
Q3-Q4 Price Swaps Propane - OPIS Mont Belvieu Non-TET 1,500
 34.23
Q3-Q4 Price Swaps Butane - OPIS Mont Belvieu Non-TET 200
 38.85
Q3-Q4 Price Swaps Isobutane - OPIS Mont Belvieu Non-TET 600
 38.98
Q3-Q4 Price Swaps Natural Gasoline - OPIS Mont Belvieu Non-TET 600
 55.23
The following table sets forth a summary of the Company’s outstanding natural gas derivative positions as of June 30, 2018 at weighted average contract prices:
Period Type of Contract Index 
Volumes
(MMBtu/d)
 
Fixed Price
($/MMBtu)
 
Ceiling Price
($/MMBtu)
2018          
Q3-Q4 Price Swaps NYMEX HH 25,000
 
$3.01
 
$—
Q3-Q4 Sold Call Options NYMEX HH 33,000
 
 3.25
2019          
Q1-Q4 Sold Call Options NYMEX HH 33,000
 
 3.25
2020          
Q1-Q4 Sold Call Options NYMEX HH 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 commodity 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 the 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 instruments whereto be novated to a Lender Counterparty if the Company’s net liability position exceeds the Company’s unsecured credit limit with the Non-Lender Counterparty to be novated to a Lender Counterparty and therefore do not require the posting of cash collateral.
Because each Lender Counterparty has an investment grade credit rating and the Company has obtained a guaranty from each Non-Lender Counterparty’s parent company which has an investment grade 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. As of June 30, 2019, the Company has outstanding commodity derivative instruments with fifteen counterparties to minimize its credit exposure to any individual counterparty.

Contingent Consideration Arrangements
In connection withThe purchase and sale agreements for the acquisition of properties in the Delaware Basin from ExL AcquisitionPetroleum Management, LLC and ExL Petroleum Operating Inc. (the “ExL Acquisition”) in each of the2017 and divestitures of the Company’s assets in the Niobrara in the first quarter of 2018, and the Marcellus and Utica in the fourth quarter of 2017, the Company agreed toincluded contingent consideration arrangements that could allowrequire the Company to pay or entitle the Company to receive or be required to pay certainspecified amounts if commodity prices are above specificexceed specified thresholds, which are summarized in the tabletables below. If the pricing threshold for the respective contingent consideration arrangement is met, the payment is made or received in the first quarter of the following year. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” included in this Quarterly Report on Form 10-Q as well as “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” includedthe Notes to Consolidated Financial Statements in the 20172018 Annual Report for detailsfurther discussion of these transactions. See “—Cash received (paid) for settlements of contingent consideration arrangements, net” below for discussion of the settlements that occurred during the first quarter of 2019.
Contingent ExL Acquisition and each of the divestitures discussed above.Consideration
      Contingent Receipt (Payment) - Annual Contingent Receipt (Payment) - Aggregate Limit
Contingent Consideration Arrangements Years 
Threshold (1)
 (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
 
  Year 
Threshold (1)
 
Period
Cash Flow
Occurs
 
Statement of
Cash Flows Presentation
 
Contingent
Payment -
Annual
 
Remaining Contingent
Payments -
Aggregate Limit
 
Acquisition
Date
Fair Value
          (In thousands)
            

 
($52,300)
               
Actual Settlement 2018 
$50.00
 1Q19 Financing 
($50,000)    
               
Remaining Potential Settlements 2019-2021 50.00
 
(2) 
 
(2) 
 (50,000) 
($75,000)  
 
(1)The price used to determine whether the specificspecified threshold for each year has been met is the average daily closing spot price of aper barrel of West Texas IntermediateWTI crude oil as measured by the U.S. Energy Information Administration (“U.S. EIA”).
(2)Cash paid for settlements of contingent consideration arrangements are classified as cash flows from financing activities up to the Contingent ExL Consideration, Contingent Niobrara Consideration, and Contingent Utica Consideration andacquisition date fair value with any excess classified as cash flows from operating activities. Therefore, if the commodity price threshold is reached, $2.3 million of the next contingent payment will be presented in cash flows from financing activities with the remainder, as well as all subsequent contingent payments, presented in cash flows from operating activities.
Contingent Niobrara Consideration
  Year 
Threshold (1)
 
Period
Cash Flow
Occurs
 
Statement of
Cash Flows Presentation
 
Contingent
Receipt -
Annual
 
Remaining Contingent
Payments -
Aggregate Limit
 
Divestiture
Date
Fair Value
          (In thousands)
            

 
$7,880
               
Actual Settlement 2018 $55.00 1Q19 Financing 
$5,000
   

               
Remaining Potential Settlements 2019 55.00 1Q20 
(2) 
 5,000
 
$10,000
  
  2020 60.00 1Q21 
(2) 
 5,000
    
(1)The price used to determine whether the specified threshold for each year has been met is the average daily closing spot price per barrel of WTI crude oil as measured by the U.S. EIA.
(2)If the commodity price threshold is reached, $2.9 million of the next contingent receipt will be presented in cash flows from financing activities with the remainder, as well as all subsequent contingent receipts, presented in cash flows from operating activities.

Contingent Marcellus Consideration
  Year 
Threshold (1)
 
Period
Cash Flow
Occurs
 
Statement of
Cash Flows Presentation
 
Contingent
Receipt -
Annual
 
Remaining Contingent
Payments -
Aggregate Limit
 
Divestiture
Date
Fair Value
          (In thousands)
            

 
$2,660
               
Actual Settlement 2018 $3.13 1Q19 N/A 
$—
   

               
Remaining Potential Settlements 2019 3.18 1Q20 
(2) 
 3,000
 
$6,000
  
  2020 3.30 1Q21 
(2) 
 3,000
    
(1)The price used to determine whether the specified threshold for each year has been met is the average monthly settlement price of aper 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.
(2)For the first quarter of 2019, there was no settlement for the Contingent Marcellus Consideration. Therefore, if the commodity price threshold is reached, $2.7 million of the contingent receipt will be presented in cash flows from financing activities with the remainder, as well as all subsequent contingent receipts, presented in cash flows from operating activities.

Contingent Utica Consideration
  Year 
Threshold (1)
 
Period
Cash Flow
Occurs
 
Statement of
Cash Flows Presentation
 
Contingent
Receipt -
Annual
 
Remaining Contingent
Payments -
Aggregate Limit
 
Divestiture
Date
Fair Value
          (In thousands)
            

 
$6,145
               
Actual Settlement 2018 $50.00 1Q19 Financing 
$5,000
   

               
Remaining Potential Settlements 2019 53.00 1Q20 
(2) 
 5,000
 
$10,000
  
  2020 56.00 1Q21 
(2) 
 5,000
    
(1)The price used to determine whether the specified threshold for each year has been met is the average daily closing spot price per barrel of WTI crude oil as measured by the U.S. EIA.
(2)If the commodity price threshold is reached, $1.1 million of the next contingent receipt will be presented in cash flows from financing activities with the remainder, as well as all subsequent contingent receipts, presented in cash flows from operating activities.


Derivative Assets and Liabilities
All commodity derivative instruments are recorded in the consolidated balance sheets as either an asset or liability measured at fair value. 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 asset and liability fair value asset or liability pursuant to the netting arrangements described above. Each of the contingent consideration arrangements discussed above were determined to be embedded derivatives and are recorded in the consolidated balance sheets as either an asset or liability measured at fair value at the acquisition or divestiture date, as well as each subsequent balance sheet date.
The combined derivative instrument fair value assets and liabilities, including deferred premium obligations,values recorded in the consolidated balance sheets as of June 30, 20182019 and December 31, 20172018 are summarized below:
 June 30, 2018 June 30, 2019
 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 
$32,422
 
($31,259) 
$1,163
 
$21,704
 
($15,582) 
$6,122
Contingent Niobrara Consideration 4,820
 
 4,820
 3,409
 
 3,409
Contingent Marcellus Consideration 130
 
 130
 3
 
 3
Contingent Utica Consideration 4,815
 
 4,815
 4,087
 
 4,087
Derivative assets 
$42,187
 
($31,259) 
$10,928
 
$29,203
 
($15,582) 
$13,621
Commodity derivative instruments 13,418
 (13,418) 
 10,303
 (8,243) 2,060
Contingent Niobrara Consideration 5,150
 
 5,150
 1,538
 
 1,538
Contingent Marcellus Consideration 1,400
 
 1,400
 447
 
 447
Contingent Utica Consideration 5,730
 
 5,730
 1,970
 
 1,970
Other assets 
$25,698
 
($13,418) 
$12,280
Other long-term assets 
$14,258
 
($8,243) 
$6,015
            
Commodity derivative instruments 
($118,953) 
$21,813
 
($97,140) 
($26,390) 
$8,024
 
($18,366)
Deferred premium obligations (9,446) 9,446
 
 (7,558) 7,558
 
Contingent ExL Consideration (48,380) 
 (48,380) (46,385) 
 (46,385)
Derivative liabilities-current 
($176,779) 
$31,259
 
($145,520) 
($80,333) 
$15,582
 
($64,751)
Commodity derivative instruments (40,006) 5,748
 (34,258) (10,988) 6,474
 (4,514)
Deferred premium obligations (7,670) 7,670
 
 (1,769) 1,769
 
Contingent ExL Consideration (53,675) 
 (53,675) (14,413) 
 (14,413)
Derivative liabilities-non current 
($101,351) 
$13,418
 
($87,933)
Other long-term liabilities 
($27,170) 
$8,243
 
($18,927)
  December 31, 2018
  Gross Amounts Recognized Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets
  (In thousands)
Commodity derivative instruments 
$50,406
 
($20,502) 
$29,904
Contingent Niobrara Consideration 5,000
 
 5,000
Contingent Utica Consideration 5,000
 
 5,000
Derivative assets 
$60,406
 
($20,502) 
$39,904
Commodity derivative instruments 6,083
 (4,236) 1,847
Contingent Niobrara Consideration 2,035
 
 2,035
Contingent Marcellus Consideration 1,369
 
 1,369
Contingent Utica Consideration 2,501
 
 2,501
Other long-term assets 
$11,988
 
($4,236) 
$7,752
       
Commodity derivative instruments 
($15,345) 
$10,140
 
($5,205)
Deferred premium obligations (10,362) 10,362
 
Contingent ExL Consideration (50,000) 
 (50,000)
Derivative liabilities-current 
($75,707) 
$20,502
 
($55,205)
Commodity derivative instruments (10,751) 518
 (10,233)
Deferred premium obligations (3,718) 3,718
 
Contingent ExL Consideration (30,584) 
 (30,584)
Other long-term liabilities 
($45,053) 
$4,236
 
($40,817)


  December 31, 2017
  Gross Amounts Recognized Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts Presented in the Consolidated Balance Sheets
  (In thousands)
Commodity derivative instruments 
$4,869
 
($4,869) 
$—
Derivative assets 
$4,869
 
($4,869) 
$—
Commodity derivative instruments 9,505
 (9,505) 
Contingent Niobrara Consideration 
 
 
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 
($52,671) 
($4,450) 
($57,121)
Deferred premium obligations (9,319) 9,319
 
Derivative liabilities-current 
($61,990) 
$4,869
 
($57,121)
Commodity derivative instruments (24,609) (2,098) (26,707)
Deferred premium obligations (11,603) 11,603
 
Contingent ExL Consideration (85,625) 
 (85,625)
Derivative liabilities-non current 
($121,837) 
$9,505
 
($112,332)
See “Note 11.14. Fair Value Measurements” for additional information regarding the fair value of the Company’s derivative instruments.
(Gain) Lossloss on Derivatives, Netderivatives, 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 resultcomponents of changes in the fair value of the Company’s commodity derivative instruments, as well as its contingent consideration arrangements, are recognized as “(Gain) loss on derivatives, net” in the consolidated statements of income in the period in which the changes occur. All deferred premium obligations associated with the Company’s commodity derivative instruments are recognized in “(Gain) loss on derivatives, net” in the consolidated statements of income in the period in which the deferred premium obligations are incurred. The effects of commodity derivative instruments, deferred premium obligations and contingent consideration arrangements in the consolidated statements of income for the three and six months ended June 30, 20182019 and 20172018 are summarized below:
   Three Months Ended June 30, Six Months Ended
June 30,
  2019 2018 2019 2018
  (In thousands)
(Gain) loss on derivatives, net        
Crude oil 
($20,915) 
$53,437
 
$41,846
 
$82,948
NGL 
 6,564
 (6) 4,799
Natural gas (1,600) 153
 (3,670) (2,892)
Contingent ExL Consideration 1,215
 10,600
 30,214
 16,430
Contingent Niobrara Consideration 265
 (1,705) (2,912) (2,090)
Contingent Marcellus Consideration 438
 205
 919
 675
Contingent Utica Consideration 148
 (1,540) (3,556) (2,560)
(Gain) loss on derivatives, net 
($20,449) 
$67,714
 
$62,835
 
$97,310
   Three Months Ended
June 30,
  Six Months Ended
June 30,
  2018 2017 2018 2017
  (In thousands)
(Gain) Loss on Derivatives, Net        
Crude oil derivatives 
$53,437
 
($29,736) 
$82,948
 
($48,163)
NGL derivatives 6,564
 
 4,799
 
Natural gas derivatives 153
 (3,883) (2,892) (10,719)
Deferred premium obligations 
 7,554
 
 7,501
Contingent ExL Consideration 10,600
 
 16,430
 
Contingent Niobrara Consideration (1,705) 
 (2,090) 
Contingent Marcellus Consideration 205
 
 675
 
Contingent Utica Consideration (1,540) 
 (2,560) 
(Gain) Loss on Derivatives, Net 
$67,714
 
($26,065) 
$97,310
 
($51,381)


Cash Received (Paid)received (paid) for Derivative Settlements, Netderivative settlements, net
Cash flows are impacted to the extent that settlements of commodity derivatives, including deferred premium obligations, andThere were no settlements of contingent consideration arrangements result in cash receipts or payments duringfor the periodthree months ended June 30, 2019. For the six months ended June 30, 2019, the Company paid $50.0 million from the first annual settlement of the Contingent ExL Consideration and are presentedreceived $10.0 million from the first annual settlements of the Contingent Niobrara Consideration and the Contingent Utica Consideration as “Cash received (paid)the specified pricing thresholds for derivative settlements, net” in the consolidated statements of cash flows. Cash payments made to settlefiscal year 2018 for each contingent consideration liabilitiesarrangement were exceeded. The cash paid and received for those contingent consideration settlements are classified as cash flows from financing activities up toas each of the divestituresettlements were less than their respective acquisition or acquisitiondivestiture date fair value with any excess classified as cash flows from operating activities.values. For the three and six months ended June 30, 2018, and 2017, the Company did not receive or pay cash for thethere were no settlements of contingent consideration arrangements.
The net cash received (paid)components of “Cash paid for derivative settlements, net” and “Cash paid for settlements of commodity derivatives and deferred premium obligationscontingent consideration arrangements, net” in the consolidated statements of cash flows for the three and six months ended June 30, 20182019 and 20172018 are summarized below:
   Three Months Ended June 30, Six Months Ended
June 30,
  2019 2018 2019 2018
Cash Flows From Operating Activities (In thousands)
Cash received (paid) for commodity derivative settlements, net        
Crude oil 
($3,698) 
($21,210) 
($4,018) 
($33,333)
NGL 
 (756) 623
 (1,188)
Natural gas 1,925
 488
 1,625
 540
Deferred premium obligations (2,749) (2,605) (5,390) (4,467)
Cash paid for commodity derivative settlements, net 
($4,522) 
($24,083) 
($7,160) 
($38,448)
         
Cash Flows From Financing Activities        
Cash received (paid) for settlements of contingent consideration arrangements, net    
Contingent ExL Consideration 
$—
 
$—
 
($50,000) 
$—
Contingent Niobrara Consideration 
 
 5,000
 
Contingent Utica Consideration 
 
 5,000
 
Cash paid for settlements of contingent consideration arrangements, net 
$—
 
$—
 
($40,000) 
$—
   Three Months Ended
June 30,
  Six Months Ended
June 30,
  2018 2017 2018 2017
Cash Flows from Operating Activities (In thousands)
Cash Received (Paid) for Derivative Settlements, Net        
Crude oil derivatives 
($21,210) 
$409
 
($33,333) 
$3,441
NGL derivatives (756) 
 (1,188) 
Natural gas derivatives 488
 (104) 540
 (1,253)
Deferred premium obligations (2,605) (566) (4,467) (930)
Cash Received (Paid) for Derivative Settlements, Net 
($24,083) 
($261) 
($38,448) 
$1,258
11.
14. 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 commodity derivative instrument and contingent consideration arrangement assets and liabilities measured at fair value on a recurring basis as of June 30, 20182019 and December 31, 2017:2018:
  June 30, 2019
Level 1Level 2Level 3
(In thousands)
Assets
Commodity derivative instruments
$—

$8,182

$—
Contingent Niobrara Consideration
4,947

Contingent Marcellus Consideration
450

Contingent Utica Consideration
6,057

Liabilities
Commodity derivative instruments
$—

($22,880)
$—
Contingent ExL Consideration
(60,798)
December 31, 2018
  Level 1 Level 2 Level 3
  (In thousands)
Assets      
Commodity derivative instruments 

$—

 

$1,16331,751

 

$—

Contingent Niobrara Consideration 

7,035
 
9,970

Contingent Marcellus Consideration 

1,369
 
1,530

Contingent Utica Consideration 

7,501
 
10,545

       
Liabilities      
Commodity derivative instruments 

$—

 

($131,39815,438) 

$—

Contingent ExL Consideration 

(80,584) 
(102,055)
December 31, 2017
Level 1Level 2Level 3
(In thousands)
Assets
Commodity derivative instruments
$—

$—

$—
Contingent Niobrara Consideration


Contingent Marcellus Consideration

2,205
Contingent Utica Consideration

7,985
Liabilities
Commodity derivative instruments
$—

($83,828)
$—
Contingent ExL Consideration

(85,625)

The commodity derivative and contingent consideration arrangement 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 fair value of the Company’s commodity derivative instruments is based on a third-party industry-standard pricing model which 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, 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 commodity derivative asset and liability positions held with that counterparty. Deferred premium obligations are netted with the commodity 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 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 six months ended June 30, 2018 and 2017.
Contingent consideration arrangements. 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, which include adjustments for the counterparties’ credit quality for contingent consideration assets and volatility factors. As some of these assumptionsthe Company’s credit quality for the contingent consideration liability. These inputs are not substantially

observable in active markets throughout the full term of the contingent consideration arrangements the contingent consideration arrangements wereor can be derived from observable data and are therefore designated as Level 32 within the valuation hierarchy. The Company reviewed the 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 values of the contingent consideration arrangements, which were designated as Level 3 within the valuation hierarchy, for the six months ended June 30, 2018:
  Contingent Consideration Arrangements
  Assets Liability
For the Six Months Ended June 30, 2018 (In thousands)
Beginning of period 
$10,190
 
($85,625)
Recognition of divestiture date fair value 7,880
 
Gain (loss) on changes in fair value, net(1)
 3,975
 (16,430)
Transfers into (out of) Level 3 
 
End of period 
$22,045
 
($102,055)
(1)Included in “(Gain) loss on derivatives, net” in the consolidated statements of income.
See “Note 10.13. Derivative Instruments” for additional information regarding the contingent consideration arrangements.
The Company had no transfers into Level 1 and no transfers into or out of Level 2 for the six months ended June 30, 2019.
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, are measured as of the acquisition 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 designated as Level 3 inputs. Significant inputs to the valuation of acquired oil and gas properties include 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. See “Note 4. Acquisitions and Divestitures of Oil and Gas Properties” for additional discussion.
The fair value measurements of asset retirement obligations are measured as of the date a well 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 are designated as Level 3 inputs.within the valuation 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 Stock are measured as of the issuance date by a third-party valuation specialist using a discounted cash flow model based on inputs that are not observable in the market and therefore are designated as Level 3 inputs. Significant inputs to the valuation of the Preferred Stock include the per share cash purchase price, redemption premiums, liquidation preference, and redemption assumptions provided by the Company.
Fair Value of Other Financial Instruments
The Company’s other financial instruments consist of cash and cash equivalents, receivables, payables, and long-term 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 carryingprincipal amounts of the Company’s senior notes and other long-term debt which are designated as Level 1 under the fair value hierarchy, net of unamortized premiums and debt issuance costs, with the fair values measured using quoted secondary market trading prices.prices which are designated as Level 1 within the valuation hierarchy. See “Note 8. Long-Term Debt” for additional discussion.
  June 30, 2019 December 31, 2018
  Principal Amount Fair Value Principal Amount Fair Value
  (In thousands)
6.25% Senior Notes due 2023 
$650,000
 
$626,438
 
$650,000
 
$599,625
8.25% Senior Notes due 2025 250,000
 244,063
 250,000
 244,375
  June 30, 2018 December 31, 2017
  Carrying Amount Fair Value Carrying Amount Fair Value
  (In thousands)
7.50% Senior Notes due 2020 
$129,044
 
$130,325
 
$446,087
 
$459,518
6.25% Senior Notes due 2023 642,446
 656,500
 641,792
 674,375
8.25% Senior Notes due 2025 245,817
 266,250
 245,605
 274,375
Other long-term debt due 2028 
 
 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)
  June 30, 2018
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Assets          
Total current assets 
$3,128,244
 
$120,425
 
$—
 
($3,116,164) 
$132,505
Total property and equipment, net 6,445
 2,562,799
 3,028
 (3,847) 2,568,425
Investment in subsidiaries (743,363) 
 
 743,363
 
Other assets 8,630
 12,279
 
 
 20,909
Total Assets 
$2,399,956
 
$2,695,503
 
$3,028
 
($2,376,648) 
$2,721,839
           
Liabilities and Shareholders’ Equity          
Current liabilities 
$257,137
 
$3,362,551
 
$3,028
 
($3,119,185) 
$503,531
Long-term liabilities 1,526,788
 76,315
 
 15,879
 1,618,982
Preferred stock 172,858
 
 
 
 172,858
Total shareholders’ equity 443,173
 (743,363) 
 726,658
 426,468
Total Liabilities and Shareholders’ Equity 
$2,399,956
 
$2,695,503
 
$3,028
 
($2,376,648) 
$2,721,839
  December 31, 2017
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Assets          
Total current assets 
$3,441,633
 
$105,533
 
$—
 
($3,424,288) 
$122,878
Total property and equipment, net 5,953
 2,630,707
 3,028
 (3,878) 2,635,810
Investment in subsidiaries (999,793) 
 
 999,793
 
Other assets 9,270
 10,346
 
 
 19,616
Total Assets 
$2,457,063
 
$2,746,586
 
$3,028
 
($2,428,373) 
$2,778,304
           
Liabilities and Shareholders’ Equity          
Current liabilities 
$165,701
 
$3,631,401
 
$3,028
 
($3,427,308) 
$372,822
Long-term liabilities 1,689,466
 114,978
 
 15,879
 1,820,323
Preferred stock 214,262
 
 
 
 214,262
Total shareholders’ equity 387,634
 (999,793) 
 983,056
 370,897
Total Liabilities and Shareholders’ Equity 
$2,457,063
 
$2,746,586
 
$3,028
 
($2,428,373) 
$2,778,304

CARRIZO OIL & GAS, INC.
CONDENSED CONSOLIDATING STATEMENTS OF INCOME
(In thousands)
(Unaudited)
  Three Months Ended June 30, 2018
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$19
 
$263,954
 
$—
 
$—
 
$263,973
Total costs and expenses 106,335
 121,869
 
 (23) 228,181
Income (loss) before income taxes (106,316) 142,085
 
 23
 35,792
Income tax expense 
 (483) 
 
 (483)
Equity in income of subsidiaries 141,602
 
 
 (141,602) 
Net income 
$35,286
 
$141,602
 
$—
 
($141,579) 
$35,309
Dividends on preferred stock (4,474) 
 
 
 (4,474)
Accretion on preferred stock (740) 
 
 
 (740)
Loss on redemption of preferred stock 
 
 
 
 
Net income attributable to common shareholders 
$30,072
 
$141,602
 
$—
 
($141,579) 
$30,095
  Three Months Ended June 30, 2017
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$174
 
$166,309
 
$—
 
$—
 
$166,483
Total costs and expenses 7,731
 102,415
 
 31
 110,177
Income (loss) before income taxes (7,557) 63,894
 
 (31) 56,306
Income tax expense 
 
 
 
 
Equity in income of subsidiaries 63,894
 
 
 (63,894) 
Net income 
$56,337
 
$63,894
 
$—
 
($63,925) 
$56,306
Dividends on preferred stock 
 
 
 
 
Accretion on preferred stock 
 
 
 
 
Loss on redemption of preferred stock 
 
 
 
 
Net income attributable to common shareholders 
$56,337
 
$63,894
 
$—
 
($63,925) 
$56,306

CARRIZO OIL & GAS, INC.
CONDENSED CONSOLIDATING STATEMENTS OF INCOME
(In thousands)
(Unaudited)
  Six Months Ended June 30, 2018
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$39
 
$489,214
 
$—
 
$—
 
$489,253
Total costs and expenses 193,700
 231,982
 
 (32) 425,650
Income (loss) before income taxes (193,661) 257,232
 
 32
 63,603
Income tax expense 
 (802) 
 
 (802)
Equity in income of subsidiaries 256,430
 
 
 (256,430) 
Net income 
$62,769
 
$256,430
 
$—
 
($256,398) 
$62,801
Dividends on preferred stock (9,337) 
 
 
 (9,337)
Accretion on preferred stock (1,493) 
 
 
 (1,493)
Loss on redemption of preferred stock (7,133) 
 
 
 (7,133)
Net income attributable to common shareholders 
$44,806
 
$256,430
 
$—
 
($256,398) 
$44,838
  Six Months Ended June 30, 2017
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Total revenues 
$256
 
$317,582
 
$—
 
$—
 
$317,838
Total costs and expenses 26,599
 194,871
 
 41
 221,511
Income (loss) before income taxes (26,343) 122,711
 
 (41) 96,327
Income tax expense 
 
 
 
 
Equity in income of subsidiaries 122,711
 
 
 (122,711) 
Net income 
$96,368
 
$122,711
 
$—
 
($122,752) 
$96,327
Dividends on preferred stock 
 
 
 
 
Accretion on preferred stock 
 
 
 
 
Loss on redemption of preferred stock 
 
 
 
 
Net income attributable to common shareholders 
$96,368
 
$122,711
 
$—
 
($122,752) 
$96,327

CARRIZO OIL & GAS, INC.
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
  Six Months Ended June 30, 2018
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Net cash provided by (used in) operating activities 
($158,309) 
$434,181
 
$—
 
$—
 
$275,872
Net cash provided by (used in) investing activities 348,235
 (84,355) 
 (349,826) (85,946)
Net cash used in financing activities (197,367) (349,826) 
 349,826
 (197,367)
Net decrease in cash and cash equivalents (7,441) 
 
 
 (7,441)
Cash and cash equivalents, beginning of period 9,540
 
 
 
 9,540
Cash and cash equivalents, end of period 
$2,099
 
$—
 
$—
 
$—
 
$2,099
  Six Months Ended June 30, 2017
  
Parent
Company
 
Combined
Guarantor
Subsidiaries
 
Combined
Non-
Guarantor
Subsidiaries
 Eliminations Consolidated
Net cash provided by (used in) operating activities 
($77,501) 
$256,656
 
$—
 
$—
 
$179,155
Net cash used in investing activities (109,780) (364,887) 
 108,231
 (366,436)
Net cash provided by financing activities 185,315
 108,231
 
 (108,231) 185,315
Net decrease in cash and cash equivalents (1,966) 
 
 
 (1,966)
Cash and cash equivalents, beginning of period 4,194
 
 
 
 4,194
Cash and cash equivalents, end of period 
$2,228
 
$—
 
$—
 
$—
 
$2,228

13.15. Supplemental Cash Flow Information
Supplemental cash flow disclosures and non-cash investing and financing activities are presented below:
  Six Months Ended
June 30,
  2019 2018
  (In thousands)
Operating activities:    
Cash paid for interest, net of amounts capitalized 
$34,475
 
$29,853
Cash paid for income taxes 590
 
     
Investing activities:    
Increase (decrease) in capital expenditure payables and accruals 
$28,428
 
$35,543
     
Supplemental non-cash investing activities:    
Fair value of contingent consideration assets on date of divestiture 
$—
 
($7,880)
Stock-based compensation expense capitalized to oil and gas properties 3,417
 4,416
Asset retirement obligations capitalized to oil and gas properties 3,324
 691
     
Supplemental non-cash financing activities:    
Non-cash loss on extinguishment of debt, net 
$—
 
$2,666
   Six Months Ended
June 30,
  2018 2017
  (In thousands)
Supplemental cash flow disclosures:    
Cash paid for interest, net of amounts capitalized 
$29,853
 
$39,603
     
Non-cash investing activities:    
Increase in capital expenditure payables and accruals 
$35,543
 
$48,395
Contingent consideration arrangement related to divestitures of oil and gas properties (7,880) 

14.16. Subsequent Events
Divestiture of Non-Operated Delaware Basin Assets
InOn July 2018, the Company closed on the divestiture of certain non-operated assets in the Delaware Basin for estimated aggregate net proceeds of $31.4 million. The proceeds from this divestiture will be recognized as a reduction of proved oil and gas properties.
Hedging
In August 2018,14, 2019, the Company entered into the following crude oil derivative positions at the weighted average contract prices summarized below:Merger Agreement with Callon. See “Note 1. Nature of Operations” for further discussion.

Period Type of Contract Index 
Volumes
(Bbls/d)
 
Fixed Price
($/Bbl)
2019        
Q1 Basis Swaps 
Midland WTI-Cushing WTI (1)
 2,500
 
($6.94)
Q2 Basis Swaps 
Midland WTI-Cushing WTI (1)
 3,000
 (6.94)
Q3 Basis Swaps 
Midland WTI-Cushing WTI (1)
 3,500
 (6.94)
Q4 Basis Swaps 
Midland WTI-Cushing WTI (1)
 5,000
 (4.00)
2020        
Q1 Basis Swaps 
Midland WTI-Cushing WTI (1)
 1,000
 (1.90)

(1)The index price paid under these basis swaps is Midland WTI and the index price received is Cushing WTI less the fixed price differential.









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 20172018 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
Second Quarter 2018 HighlightsRecent Developments
Total production for the three months ended June 30,2018 was 57,077 Boe/d,On July 14, 2019, we entered into an increaseAgreement and Plan of 12% from the three months ended June 30, 2017, primarily dueMerger (the “Merger Agreement”) with Callon Petroleum Company (“Callon”). Pursuant to the additionMerger Agreement, we will be merged with and into Callon, with Callon continuing as the surviving entity (the “Merger”). The closing of production from the ExL Acquisition in the third quarter of 2017, partially offset by the divestitures in the Utica and Marcellus ShalesMerger is expected to occur in the fourth quarter of 20172019, subject to approvals from the common shareholders of Carrizo and Callon and other certain conditions. Subject to the Niobrara Formationterms and conditions set forth in the Merger Agreement, upon closing of the Merger, each share of our common stock issued and outstanding immediately prior to the effective time of the Merger will automatically be converted into the right to receive 2.05 shares of Callon’s common stock. See “Note 1. Nature of Operations” and “Part II. Other Information—Item 1A. Risk Factors” for further discussion.
In light of the proposed Merger, we do not, in general, plan to provide or update guidance and long-term outlook information regarding our results of operations during the pendency of the merger. In addition, investors are cautioned not to rely on historical forward-looking statements regarding guidance and long-term outlook information, as they were as of the date provided and were subject to the specific risks and uncertainties that accompanied such statements.
Second Quarter 2019 Highlights
Total production for the three months ended June 30, 2019 was 65,643 Boe/d, an increase of 15% from the three months ended June 30, 2018, primarily due to production from new wells in the Eagle Ford in the first quarter of 2018 and Delaware Basin, partially offset by normal production declines.
decline.
Operated drilling and completion activity for the three months ended June 30, 20182019, along with our drilled but uncompleted and producing wells as of June 30, 20182019, are summarized in the table below.
 Three Months Ended June 30, 2018 June 30, 2018 Three Months Ended June 30, 2019 June 30, 2019
 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 19
 17.7
 18
 15.6
 15
 14.0
 485
 434.9
 11
 9.9
 30
 27.2
 23
 21.2
 580
 519.6
Delaware Basin 9
 7.8
 12
 9.3
 10
 8.6
 46
 37.6
 6
 4.7
 3
 3.0
 10
 8.5
 92
 79.7
Total 28
 25.5
 30
 24.9
 25
 22.6
 531
 472.5
 17
 14.6
 33
 30.2
 33
 29.7
 672
 599.3
Drilling and completion expenditures for the second quarter of 20182019 were $218.0$131.1 million, of which nearly 55% wasapproximately 66% were in the Delaware BasinEagle Ford with the balance in the Eagle Ford. Delaware Basin.
We currently expectrecorded net income attributable to operate an average of six rigs, with four located in the Eagle Ford and two located in the Delaware Basin, and 2-3 completion crewscommon shareholders for the remainderthree months ended June 30, 2019 of 2018. Given the faster cycle times in the Eagle Ford,$102.2 million, or $1.10 per diluted share, as well as the Company’s decisioncompared to maintain a six rig program for the remainder of the year, our current 2018 drilling, completion, and infrastructure capital expenditure plan has been increased from $750.0 million to $800.0 million to $800.0 million to $825.0 million. See “—Liquidity and Capital Resources—2018 Drilling, Completion, and Infrastructure Capital Expenditure Plan and Funding Strategy” for additional details.
In May 2018, we entered into the twelfth amendment to our credit agreement governing the revolving credit facility to, among other things, (i) establish the borrowing base at $1.0 billion, with an elected commitment amount of $900.0 million, until the next redetermination thereof, (ii) reduce the margins applied to Eurodollar loans from 2.0%-3.0% to 1.5%-2.5%, depending on level of facility usage, (iii) amend the covenant limiting payment of dividends and distributions on equity to increase our ability to make dividends and distributions on our equity interests and (iv) amend certain other provisions, in each case as set forth therein.
We recorded net income attributable to common shareholders for the three months ended June 30, 2018 of $30.1 million, or $0.36 per diluted share, as compared toshare. The increase in net income attributable to common shareholders was driven primarily by a gain on derivatives, net of approximately $20.4 million during the second quarter of 2019 compared to a loss on derivatives, net of approximately $67.7 million during the second quarter of 2018. Although total production for the three months ended June 30, 2017 of $56.3 million, or $0.85 per diluted share. The reduction in net income attributable to common shareholders2019 increased 15% from the three months ended June 30, 2018, the average realized price for the second quarter of 2018three months ended June 30, 2019 decreased 13% as compared to the net income attributable to common shareholders for the second quarter of 2017 was driven primarily by a loss on derivatives, net of $67.7 millionthree months ended June 30, 2018 resulting in the second quarter of 2018 as compared to a gain on derivatives, net of $26.1 million in the second quarter of 2017 and an increase in our depreciation, depletion and amortization (“DD&A”) expense for the second quarter of 2018 due to the addition of proved oil and gas properties related to the ExL Acquisition and increased production, partially offset by higher production volumes and commodity prices in the second quarter of 2018 compared to the second quarter of 2017.total revenue remaining relatively flat. See “—Results of Operations” below for further details.
Recent Developments
In July 2018, we closed on the divestiture of certain non-operated assets in the Delaware Basin for estimated aggregate net proceeds of $31.4 million.


Results of Operations
Comparison of Results Between The Three Months Ended June 30,2019 and 2018, Compared to the ThreeAnd The Six Months Ended June 30, 20172019 and 2018
Production volumes
The following table summarizes total production volumes and daily production volumes average realized prices and revenues for the periods indicated:
   Three Months Ended June 30, 
Amount
Change
Between
Periods
 
Percent
Change
Between
Periods
 Six Months Ended
June 30,
 
Amount
Change
Between
Periods
 
Percent
Change
Between
Periods
  2019 2018   2019 2018  
Total production volumes                
    Crude oil (MBbls) 4,042
 3,445
 597
 17% 7,707
 6,517
 1,190
 18%
    NGLs (MBbls) 949
 853
 96
 11% 1,840
 1,593
 247
 16%
    Natural gas (MMcf) 5,897
 5,372
 525
 10% 12,015
 10,182
 1,833
 18%
Total barrels of oil equivalent (MBoe) 5,974

5,193
 781
 15% 11,550
 9,807
 1,743
 18%
                 
Daily production volumes by product                
    Crude oil (Bbls/d) 44,413
 37,860
 6,553
 17% 42,580
 36,008
 6,572
 18%
    NGLs (Bbls/d) 10,429
 9,379
 1,050
 11% 10,168
 8,800
 1,368
 16%
    Natural gas (Mcf/d) 64,805
 59,029
 5,776
 10% 66,382
 56,252
 10,130
 18%
Total barrels of oil equivalent (Boe/d) 65,643
 57,077
 8,566
 15% 63,812
 54,183
 9,629
 18%
                 
Daily production volumes by region (Boe/d)              
    Eagle Ford 41,370
 37,039
 4,331
 12% 40,456
 36,335
 4,121
 11%
    Delaware Basin 24,273
 19,783
 4,490
 23% 23,356
 17,522
 5,834
 33%
    Other 
 255
 (255) (100%) 
 326
 (326) (100%)
Total barrels of oil equivalent (Boe/d) 65,643
 57,077
 8,566
 15% 63,812
 54,183
 9,629
 18%
The increase in production volumes for the three and six months ended June 30,2018 2019 compared to the three and 2017:
   Three Months Ended
June 30,
 2018 Period
Compared to 2017 Period
  2018 2017 Increase (Decrease) % Increase (Decrease)
Total production volumes -        
    Crude oil (MBbls) 3,445
 3,060
 385
 13%
    NGLs (MBbls) 853
 453
 400
 88%
    Natural gas (MMcf) 5,372
 6,775
 (1,403) (21%)
Total barrels of oil equivalent (MBoe) 5,193

4,643
 550
 12%
         
Daily production volumes by product -        
    Crude oil (Bbls/d) 37,860
 33,629
 4,231
 13%
    NGLs (Bbls/d) 9,379
 4,982
 4,397
 88%
    Natural gas (Mcf/d) 59,029
 74,451
 (15,422) (21%)
Total barrels of oil equivalent (Boe/d) 57,077
 51,019
 6,058
 12%
         
Daily production volumes by region (Boe/d) -        
    Eagle Ford 37,039
 38,055
 (1,016) (3%)
    Delaware Basin 19,783
 2,151
 17,632
 820%
    Other 255
 10,813
 (10,558) (98%)
Total barrels of oil equivalent (Boe/d) 57,077
 51,019
 6,058
 12%
         
Average realized prices -        
    Crude oil ($ per Bbl) 
$66.70
 
$46.67
 
$20.03
 43%
    NGLs ($ per Bbl) 24.93
 17.19
 7.74
 45%
    Natural gas ($ per Mcf) 2.40
 2.35
 0.05
 2%
Total average realized price ($ per Boe) 
$50.83
 
$35.86
 
$14.97
 42%
         
Revenues (In thousands) -        
    Crude oil 
$229,798
 
$142,806
 
$86,992
 61%
    NGLs 21,269
 7,786
 13,483
 173%
    Natural gas 12,906
 15,891
 (2,985) (19%)
Total revenues 
$263,973
 
$166,483
 
$97,490
 59%
Production volumes for the threesix months ended June 30, 2018 were 57,077 Boe/d, an increase of 12% from 51,019 Boe/d for the same period in 2017. The increase is primarily due to production from new wells in the Eagle Ford and the addition of production from the ExL Acquisition in the third quarter of 2017,Delaware Basin, partially offset by the divestitures in the Utica and Marcellus Shales in the fourth quarter of 2017 and the Niobrara Formation and Eagle Ford in the first quarter of 2018 and normal production declines. Revenuesdecline.
Average realized prices and revenues
The following table summarizes average realized prices and revenues for the periods indicated:
   Three Months Ended June 30, 
Amount
Change
Between
Periods
 
Percent
Change
Between
Periods
 Six Months Ended
June 30,
 
Amount
Change
Between
Periods
 
Percent
Change
Between
Periods
  2019 2018   2019 2018  
Average realized prices                
Crude oil ($ per Bbl) 
$60.67
 
$66.70
 
($6.03) (9%) 
$58.12
 
$65.17
 
($7.05) (11%)
NGLs ($ per Bbl) 14.92
 24.93
 (10.01) (40%) 16.85
 23.96
 (7.11) (30%)
Natural gas ($ per Mcf) 0.95
 2.40
 (1.45) (60%) 1.59
 2.59
 (1.00) (39%)
Total average realized price ($ per Boe) 
$44.35
 
$50.83
 
($6.48) (13%) 
$43.12
 
$49.89
 
($6.77) (14%)
                 
Revenues (In thousands)                
Crude oil 
$245,212
 
$229,798
 
$15,414
 7% 
$447,956
 
$424,717
 
$23,239
 5%
NGLs 14,159
 21,269
 (7,110) (33%) 30,996
 38,171
 (7,175) (19%)
Natural gas 5,596
 12,906
 (7,310) (57%) 19,055
 26,365
 (7,310) (28%)
Total revenues 
$264,967
 
$263,973
 
$994
 % 
$498,007
 
$489,253
 
$8,754
 2%
The increase in revenues for the three months ended June 30, 2018 increased 59% to $264.0 million2019 compared to $166.5 million for the same period in 20172018 is primarily due to higher crude oil pricesproduction, partially offset by lower crude oil, NGL, and increasednatural gas prices.
The increase in revenues for the six months ended June 30, 2019 compared to the same period in 2018 is primarily due to higher crude oil production, partially offset by lower crude oil and NGL production, primarily as a result ofprices.

Lease operating expense
The following table summarizes lease operating expense for the ExL Acquisition.periods indicated:
Lease
   Three Months Ended June 30, Six Months Ended June 30,
  2019 2018 2019 2018
  (In thousands, except per Boe amounts)
  Amount Per Boe Amount Per Boe Amount Per Boe Amount Per Boe
Lease operating expense 
$44,514
 
$7.45
 
$35,151
 
$6.77
 
$86,545
 
$7.49
 
$74,424
 
$7.59
The increase in lease operating expenses for the three months ended June 30, 2018 decreased to $35.2 million ($6.77 per Boe) from $36.0 million ($7.76 per Boe) for the same period in 2017. The decrease in lease operating expenses is primarily due to a reduction in workover costs for the three months ended June 30, 2018 when2019 compared to the same period in 2017.2018 is primarily due to costs associated with increased production. The increase in lease operating expense per Boe is primarily due to increased workover activity primarily in the Eagle Ford.
The increase in lease operating expenses for the six months ended June 30, 2019 compared to the same period in 2018 is primarily due to costs associated with increased production. The decrease in lease operating expense per Boe is primarily due to the additionan increased proportion of production from wells drilled on properties acquired in the ExL Acquisition, beginning in the third quarter of 2017, which has ahave lower operating costcosts per Boe than our other crude oil properties, partially offset by an increased proportion of totalDelaware Basin and Eagle Ford properties.
Production and ad valorem taxes
The following table summarizes production from crude oil properties, which have a higher operating cost per Boe than natural gas properties, as a result ofand ad valorem taxes for the divestitureperiods indicated:
   Three Months Ended June 30, Six Months Ended June 30,
  2019 2018 2019 2018
  (In thousands, except % of revenues amounts)
  Amount % of Revenues Amount % of Revenues Amount % of Revenues Amount % of Revenues
Production and ad valorem taxes 
$17,793
 6.7% 
$16,127
 6.1% 
$32,687
 6.6% 
$28,675
 5.9%
The increase in the Marcellus Shale in the fourth quarter of 2017,production and ad valorem taxes, as well as processing fees for certainthe increase of our natural gasproduction and NGL processing contracts that are now presented in lease operating expensesad valorem taxes as a resultpercent of the adoption of ASC 606.

Production taxes increased to $12.5 million (or 4.7% of revenues)revenues, for the three and six months ended June 30, 2019 compared to the three and six months ended June 30, 2018 from $7.1 million (or 4.3% of revenues) for the same period in 2017is primarily due to increased ad valorem taxes as a result of the increase in crude oil and NGL revenues. The increase in production taxes as a percentage of revenues is primarily due to the divestiture of substantially all of our assets in the Marcellus Shale in the fourth quarter of 2017, as production in Marcellus was not subject to production taxes.
Ad valorem taxes increased to $3.6 million for the three months ended June 30, 2018 from $1.1 million for the same period in 2017. The increase in ad valorem taxes is due to new wells drilled in the Eagle Ford and new wells drilled or acquired in the Delaware Basin as well as an increase in our annual estimate of ad valorem taxes for 2018 due toand higher expected property tax valuations as a result of the increase in crude oil prices.prices during 2018.
Depreciation, depletion and amortization
The following table sets forth the components of our depreciation, depletion and amortization (“DD&A”) expense for the periods indicated:
   Three Months Ended June 30, Six Months Ended June 30,
  2019 2018 2019 2018
  (In thousands, except per Boe amounts)
  Amount Per Boe Amount Per Boe Amount Per Boe Amount Per Boe
DD&A of proved oil and gas properties 
$79,352
 
$13.28
 
$71,346
 
$13.74
 
$153,352
 
$13.28
 
$134,676
 
$13.73
Depreciation of other property and equipment 722
 0.12
 613
 0.12
 1,422
 0.12
 1,194
 0.12
Amortization of other assets 198
 0.04
 140
 0.03
 418
 0.03
 374
 0.04
Accretion of asset retirement obligations 494
 0.08
 331
 0.06
 896
 0.08
 653
 0.07
DD&A 
$80,766
 
$13.52
 
$72,430
 
$13.95
 
$156,088
 
$13.51
 
$136,897
 
$13.96
DD&A expense for the second quarter of 2018three and six months ended June 30, 2019 increased $13.4$8.3 million and $19.2 million, respectively, compared to $72.4 million ($13.95 per Boe) from the DD&A expense for the second quarter of 2017 of $59.1 million ($12.72 per Boe).three and six months ended June 30, 2018. The increase in DD&A expense is attributable to increased production, and an increasepartially offset by the decrease in the DD&A rate per Boe. The increasedecrease in the DD&A rate per Boe is due primarily to increases in future development cost assumptions that occurred subsequent to the second quarteran increased proportion of 2017 as well as an increase to proved oil and gas properties related to the ExL Acquisitionreserves in the third quarter of 2017, partially offset by the reduction inDelaware Basin which carry a lower DD&A rate per Boe as compared to our proved oil and gas properties as a result of the divestituresreserves in the Utica and Marcellus ShalesEagle Ford, as well as decreased future development costs in the fourth quarter of 2017 and the Niobrara Formation and Eagle Ford in the first quarter ofand Delaware Basin subsequent to June 30, 2018. The components of our DD&A expense were as follows:
   Three Months Ended
June 30,
  2018 2017
  (In thousands)
DD&A of proved oil and gas properties 
$71,346
 
$57,695
Depreciation of other property and equipment 613
 612
Amortization of other assets 140
 321
Accretion of asset retirement obligations 331
 444
Total DD&A 
$72,430
 
$59,072

General and administrative expense, net increased to $18.3 million
The following table summarizes general and administrative expense, net for the periods indicated:
   Three Months Ended June 30, Six Months Ended June 30,
  2019 2018 2019 2018
  (In thousands)
General and administrative expense, net 
$17,301
 
$18,265
 
$42,033
 
$45,557
The decrease in general and administrative expense, net for the three months ended June 30, 2018 from $11.6 million for the corresponding period in 2017. The increase2019 was primarily due to an increasea decrease in stock-based compensation expense, net as a result of an increasea decrease in the fair value of stock appreciation rightsCash SARs for the three months ended June 30, 20182019 as compared to a decreasean increase in fair value for the same period in 2017.2018.
We recordedThe decrease in general and administrative expense, net for the six months ended June 30, 2019 was primarily due to lower annual bonuses awarded in the first quarter of 2019 as compared to the first quarter of 2018 as well as a decrease in stock-based compensation expense, net as a result of a decrease in the fair value of Cash SARs for the six months ended June 30, 2019 as compared to an increase in fair value for the same period in 2018.
(Gain) loss on derivatives, net
The following table sets forth the components of $67.7 million and aour loss on derivatives, net for the periods indicated:
   Three Months Ended June 30, Six Months Ended June 30,
  2019 2018 2019 2018
  (In thousands)  
Crude oil derivative instruments 
($20,915) 
$53,437
 
$41,846
 
$82,948
NGL derivative instruments 
 6,564
 (6) 4,799
Natural gas derivative instruments (1,600) 153
 (3,670) (2,892)
Contingent consideration arrangements 2,066
 7,560
 24,665
 12,455
(Gain) loss on derivatives, net 
($20,449) 
$67,714
 
$62,835
 
$97,310
The gain on derivatives, net of $26.1 million for the three months ended June 30, 20182019 was primarily due to new crude oil derivative instruments executed during the second quarter of 2019 as well as the downward shift in the futures curve of forecasted crude oil and 2017, respectively. The componentsnatural gas prices from April 1, 2019 to June 30, 2019 on crude oil and natural gas derivative instruments outstanding at the beginning of our (gain)the second quarter of 2019.
The loss on derivatives, net were as follows:
   Three Months Ended
June 30,
  2018 2017
  (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 
$59,602
 
($10,122)
Gain due to new derivative positions executed during the period (6,165) (19,614)
Loss due to deferred premium obligations incurred 
 7,554
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 6,564
 
Natural gas derivative positions:    
(Gain) loss due to (downward) upward shift in the futures curve of forecasted natural gas prices during the period on derivative positions outstanding at the beginning of the period 153
 (3,883)
Contingent consideration arrangements:    
Net loss primarily due to upward shift in the futures curve of forecasted crude oil prices during the period 7,560
 
(Gain) loss on derivatives, net 
$67,714
 
($26,065)

Interest expense, net for the three months ended June 30, 2018 was $15.6 million asprimarily due to the upward shift in the futures curve of forecasted crude oil and NGL prices from April 1, 2018 to June 30, 2018 on crude oil and NGL derivative instruments outstanding at the beginning of the second quarter of 2018 and on our Contingent ExL Consideration, partially offset by new crude oil derivative instruments executed during the second quarter of 2018.
The loss on derivatives, net for the six months ended June 30, 2019 was primarily due to the upward shift in the futures curve of forecasted crude oil prices from January 1, 2019 to June 30, 2019 on crude oil derivative instruments outstanding at the beginning of 2019 and on our Contingent ExL Consideration, partially offset by new crude oil and natural gas derivative instruments executed during 2019.
The loss on derivatives, net for the six months ended June 30, 2018 was primarily due to the upward shift in the futures curve of forecasted crude oil and NGL prices from January 1, 2018 to June 30, 2018 on crude oil and NGL derivative instruments outstanding at the beginning of 2018 and on our Contingent ExL Consideration, partially offset by new crude oil derivative instruments executed during 2018 and the downward shift in the futures curve of forecasted natural gas prices from January 1, 2018 to June 30, 2018 on natural gas derivative instruments outstanding at the beginning of 2018.

Interest expense, net
The following table sets forth the components of our interest expense, net for the periods indicated:
   Three Months Ended June 30, Six Months Ended June 30,
  2019 2018 2019 2018
  (In thousands)
Interest expense on Senior Notes 
$15,313
 
$17,767
 
$30,625
 
$39,253
Interest expense on revolving credit facility 10,159
 5,490
 19,213
 8,649
Amortization of premiums and debt issuance costs 986
 937
 1,918
 2,040
Other interest expense 138
 133
 284
 270
Interest capitalized (8,572) (8,728) (17,565) (19,096)
Interest expense, net 
$18,024
 
$15,599
 
$34,475
 
$31,116
The increase in interest expense, net for the three and six months ended June 30, 2019 compared to $21.1 million for the same period in 2017. Thethree and six months ended June 30, 2018 is primarily due to increased borrowings and associated interest expense on our revolving credit facility as well as the decrease was due primarily to an increase in capitalized interest as a result of a lower weighted average interest rate driven by the higher average balancesproportion of unevaluated leasehold and seismic costs forborrowings on our revolving credit facility, which carries a lower interest rate than the three months ended June 30, 2018 as compared to the three months ended June 30, 2017, primarily as a result of the ExL Acquisition in the third quarter of 2017, as well asSenior Notes. These increases were partially offset by reduced interest expense as a result of the redemptions of the 7.50% Senior Notes in the first and fourth quarter of 2017 and first quarterquarters of 2018. The decrease was partially offset by interest expense
Loss on $250.0 million aggregate principal amountextinguishment of our 8.25% Senior Notes that were issued in the third quarter of 2017 and an increase in interest expense on our revolving credit facility as a result of increased borrowings for the three months ended June 30, 2018 as compared to the three months ended June 30, 2017. The components of our interest expense, net were as follows:
   Three Months Ended
June 30,
  2018 2017
  (In thousands)
Interest expense on Senior Notes 
$17,767
 
$21,455
Interest expense on revolving credit facility 5,490
 2,261
Amortization of premiums and debt issuance costs 937
 1,079
Other interest expense 133
 298
Interest capitalized (8,728) (3,987)
Interest expense, net 
$15,599
 
$21,106
The effective income tax rates for the second quarter of 2018 and 2017 were 1.3% and 0.0%, respectively. The variance in the effective income tax rate results from current state and deferred income tax expense of $0.5 million recognized during the second quarter of 2018. The tax expense was driven by changes to our state apportionment for estimated state deferred tax liabilities as a result of the significant changes in our areas of operation that occurred in late 2017 and early 2018, whereby all remaining operations are located in Texas. The effective income tax rate was 0.0% during the second quarter of 2017 as a result of a full valuation allowance against our net deferred tax assets driven by impairments of proved oil and gas properties recognized in the third quarter of 2015 and continuing through the third quarter of 2016.
For the three months ended June 30, 2018, we declared and paid $4.5 million of cash dividends on our Preferred Stock, which reduced net income to compute net income attributable to common shareholders.

Results of Operations
Six Months Ended June 30, 2018, Compared to the Six Months Ended June 30, 2017
The following table summarizes total production volumes, daily production volumes, average realized prices and revenues for the six months ended June 30, 2018 and 2017:
   Six Months Ended
June 30,
 2018 Period
Compared to 2017 Period
  2018 2017 Increase (Decrease) % Increase (Decrease)
Total production volumes -        
    Crude oil (MBbls) 6,517
 5,656
 861
 15%
    NGLs (MBbls) 1,593
 859
 734
 85%
    Natural gas (MMcf) 10,182
 13,803
 (3,621) (26%)
Total barrels of oil equivalent (MBoe) 9,807
 8,816
 991
 11%
         
Daily production volumes by product -        
    Crude oil (Bbls/d) 36,008
 31,250
 4,758
 15%
    NGLs (Bbls/d) 8,800
 4,746
 4,054
 85%
    Natural gas (Mcf/d) 56,252
 76,260
 (20,008) (26%)
Total barrels of oil equivalent (Boe/d) 54,183
 48,706
 5,477
 11%
         
Daily production volumes by region (Boe/d) -        
    Eagle Ford 36,335
 35,332
 1,003
 3%
    Delaware Basin 17,522
 2,284
 15,238
 667%
    Other 326
 11,090
 (10,764) (97%)
Total barrels of oil equivalent (Boe/d) 54,183
 48,706
 5,477
 11%
         
Average realized prices -        
    Crude oil ($ per Bbl) 
$65.17
 
$47.90
 
$17.27
 36%
    NGLs ($ per Bbl) 23.96
 17.71
 6.25
 35%
    Natural gas ($ per Mcf) 2.59
 2.30
 0.29
 13%
Total average realized price ($ per Boe) 
$49.89
 
$36.05
 
$13.84
 38%
         
Revenues (In thousands) -        
    Crude oil 
$424,717
 
$270,898
 
$153,819
 57%
    NGLs 38,171
 15,211
 22,960
 151%
    Natural gas 26,365
 31,729
 (5,364) (17%)
Total revenues 
$489,253
 
$317,838
 
$171,415
 54%
Production volumes for the six months ended June 30, 2018 were 54,183 Boe/d, an increase of 11% from 48,706 Boe/d for the same period in 2017. The increase is primarily due to production from new wells in the Eagle Ford and the addition of production from the ExL Acquisition in the third quarter of 2017, partially offset by the divestitures in the Utica and Marcellus Shales in the fourth quarter of 2017 and the Niobrara Formation and Eagle Ford in the first quarter of 2018 and normal production declines. Revenues for the six months ended June 30, 2018 increased 54% to $489.3 million from $317.8 million for the same period in 2017 primarily due to higher crude oil prices and increased crude oil and NGL production, primarily as a result of the ExL Acquisition.
Lease operating expenses for the six months ended June 30, 2018 increased to $74.4 million ($7.59 per Boe) from $65.9 million ($7.47 per Boe) for the same period in 2017. The increase in lease operating expenses is primarily due to costs associated with new wells completed in the Eagle Ford and Delaware Basin since the second quarter of 2017, partially offset by the divestitures in the Utica and Marcellus Shales in the fourth quarter of 2017 and the Niobrara Formation and Eagle Ford in the first quarter of 2018. The increase in lease operating expense per Boe is primarily due to an 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 the Marcellus Shale in the fourth quarter of 2017 as well as processing fees for certain of our natural gas and NGL processing contracts that are now presented in lease operating expenses as a result of the adoption of ASC 606.

Production taxes increased to $23.1 million (or 4.7% of revenues) for the six months ended June 30, 2018 from $13.4 million (or 4.2% of revenues) for the same period in 2017 primarily as a result of the increase in crude oil and NGL revenues. The increase in production taxes as a percentage of revenues is primarily due to the divestiture of substantially all of our assets in the Marcellus Shale in the fourth quarter of 2017, as production in Marcellus was not subject to production taxes.
Ad valorem taxes increased to $5.6 million for the six months ended June 30, 2018 from $4.0 million for the same period in 2017. The increase in ad valorem taxes is due to new wells drilled in the Eagle Ford and new wells drilled or acquired in the Delaware Basin as well as an increase in our annual estimate of ad valorem taxes for 2018 due to higher expected property tax valuations as a result of the increase in crude oil prices.
DD&A expense for the six months ended June 30, 2018 increased $23.4 million to $136.9 million ($13.96 per Boe) from $113.5 million ($12.87 per Boe) for the same period in 2017. The increase in DD&A expense is attributable to increased production as well as 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 cost assumptions that occurred subsequent to the second quarter of 2017 as well as an increase to proved oil and gas properties related to the ExL Acquisition in the third quarter of 2017, partially offset by the reduction in proved oil and gas properties as a result of the divestitures in the Utica and Marcellus Shales in the fourth quarter of 2017 and the Niobrara Formation and Eagle Ford in the first quarter of 2018. The components of our DD&A expense were as follows:
   Six Months Ended
June 30,
  2018 2017
  (In thousands)
DD&A of proved oil and gas properties 
$134,676
 
$110,655
Depreciation of other property and equipment 1,194
 1,258
Amortization of other assets 374
 672
Accretion of asset retirement obligations 653
 869
Total DD&A 
$136,897
 
$113,454
General and administrative expense, net increased to $45.6 million for the six months ended June 30, 2018 from $33.3 million for the same period in 2017. The increase was primarily due to an increase in stock-based compensation expense, net as a result of an increase in the fair value of stock appreciation rights for the six months ended June 30, 2018 compared to a decrease in fair value for the six months ended June 30, 2017 as well as an increase in personnel costs and higher annual bonuses awarded in the first quarter of 2018 compared to the first quarter of 2017.
We recorded a loss on derivatives, net of $97.3 million and a gain on derivatives, net of $51.4 million for the six months ended June 30, 2018 and 2017, respectively. The components of our (gain) loss on derivatives, net were as follows:
   Six Months Ended
June 30,
  2018 2017
  (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 
$89,802
 
($28,549)
Gain due to new derivative positions executed during the period (6,854) (19,614)
Loss due to deferred premium obligations incurred 
 7,501
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 4,799
 
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 (2,641) (10,719)
Gain due to new derivative positions executed during the period (251) 
Contingent consideration arrangements:    
Net loss primarily due to upward shift in the futures curve of forecasted crude oil prices during the period 12,455
 
(Gain) loss on derivatives, net 
$97,310
 
($51,381)
Interest expense, net for the six months ended June 30, 2018 was $31.1 million as compared to $41.7 million for the same period in 2017. The decrease was due primarily to an increase in capitalized interest as a result of higher average balances of

unevaluated leasehold and seismic costs for the six months ended June 30, 2018 as compared to the six months ended June 30, 2017, primarily as a result of the ExL Acquisition in the third quarter of 2017, as well as reduced 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. The decrease was partially offset by interest expense on $250.0 million aggregate principal amount of our 8.25% Senior Notes that were issued in the third quarter of 2017 and an increase in interest expense on our revolving credit facility as a result of increased borrowings for the six months ended June 30, 2018 as compared to the six months ended June 30, 2017. The components of our interest expense, net were as follows:
   Six Months Ended
June 30,
  2018 2017
  (In thousands)
Interest expense on Senior Notes 
$39,253
 
$42,910
Interest expense on revolving credit facility 8,649
 3,687
Amortization of debt issuance costs, premiums, and discounts 2,040
 2,265
Other interest expense 270
 583
Capitalized interest (19,096) (7,768)
Interest expense, net 
$31,116
 
$41,677
debt
As a result of our redemptionredemptions of $320.0 million of the outstanding aggregate principal amount of our 7.50% Senior Notes in the first quarter of 2018, we recorded a loss on extinguishment of debt of $8.7 million, for the six months ended June 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 associated unamortized premiumpremiums and debt issuance costs.
The effectiveIncome taxes and deferred tax assets valuation allowance
During the first quarter of 2019, we concluded that it was more likely than not that our deferred tax assets would be realized and released a portion of the valuation allowance which was reflected in our consolidated statements of income as an income tax ratebenefit. However, for the three months ended June 30, 2019, we recognized income tax expense of $2.3 million, of which $1.4 million was as a result of changes to the forecasted timing of release of the valuation allowance related to current period activity. For the six months ended June 30, 2018 and 2017 was 1.3% and 0.0% respectively. The variance2019, we have released $177.7 million of the valuation allowance which is reflected in the effectiveour consolidated statements of income as an income tax rate results from current statebenefit.
For the three and deferred income tax expense of $0.8 million recognized during the six months ended June 30, 2018. This2018, we recognized income tax expense of $0.5 million and $0.8 million, respectively. The income tax expense for each period was due to changes to our state apportionment for estimated state deferred tax liabilitiessignificantly lower than the statutory rate as a result of the significant changes in our areas of operation that occurred in late 2017 and early 2018 as well as current period activity. The effective income tax rate was 0.0% during the six months ended June 30, 2017 as a result ofmaintaining a full valuation allowance against our net deferred tax assets driven by impairmentsbased on our conclusion that it was more likely than not that the deferred tax assets would not be realized.
Dividends on preferred stock
For both the three months ended June 30, 2019 and 2018, we declared, and paid in cash, dividends of proved oil and gas properties recognized in the third quarter of 2015 and continuing through the third quarter of 2016.$4.5 million.
For the six months ended June 30, 2019 and 2018, we declared, and paid in cash, dividends of $8.8 million and $9.3 million, of cash dividendsrespectively.
Loss on our Preferred Stock, which reduced net income to compute net income attributable to common shareholders.
As a result of our redemption of preferred stock
During the first quarter of 2018, we redeemed 50,000 shares of Preferred Stock, at $1,000.00 per share, orrepresenting 20% of the issued and outstanding Preferred Stock, for $50.5 million, consisting of the $50.0 million we recorded a loss on redemption of preferred stock of $7.1 million for the six months ended June 30, 2018, which reduced net income to compute net income attributable to common shareholders. The loss on redemption of preferred stock included $0.1 million of direct costs incurred as a result of the redemptionprice and a non-cash charge of $7.0 million attributable to the difference between $50.0 million, which was the consideration transferred to the holders of the Preferred Stock excluding accrued and unpaid dividends andof $0.5 million. 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 which was 20% of theredemption date carrying value of the Preferred Stock on the date of redemption.Stock.

Liquidity and Capital Resources
2018 Drilling, Completion,See “Note 1. Nature of Operations” and Infrastructure“Part II. Other Information—Item 1A. Risk Factors” for discussion regarding the proposed merger of Carrizo with Callon. The Merger Agreement includes restrictions on our ability to take certain actions that, among other things, may affect the matters discussed below in “—Liquidity and Capital ExpenditureResources”.
2019 DC&I Capital Expenditures. Plan and Funding Strategy. Our 2018 drilling, completion, and infrastructure2019 DC&I capital expenditure plan as approved by our board of directors remains unchanged at $525.0 million to $575.0 million, but our expectation of the amount to be spent has been increased from $750.0reduced to $500.0 million to $800.0$550.0 million as a result of efficiencies that have been achieved to $800.0 million to $825.0 million.date. We currently intend to finance the remainder of our 2018 drilling, completion, and infrastructure2019 DC&I 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. The following is a summary of our capital expenditures for the three and six months ended June 30, 20182019:
 Three Months Ended Six Months Ended
 March 31, 2018 June 30, 2018 June 30, 2018
 (In thousands)
Drilling, completion, and infrastructure     
Eagle Ford
$135,677
 
$101,249
 
$236,926
Delaware Basin73,892
 116,743
 190,635
All other regions284
 
 284
     Total drilling, completion, and infrastructure209,853
 217,992
 427,845
Leasehold and seismic5,520
 6,129
 11,649
Total Capital Expenditures (1)

$215,373
 
$224,121
 
$439,494
 Three Months Ended Six Months Ended
 March 31, 2019 June 30, 2019 June 30, 2019
 (In thousands)
DC&I     
Eagle Ford
$134,275
 
$86,514
 
$220,789
Delaware Basin80,390
 44,567
 124,957
Other52
 28
 80
Total DC&I214,717
 131,109
 345,826
Leasehold and seismic9,107
 3,606
 12,713
Total capital expenditures (1)

$223,824
 
$134,715
 
$358,539
 
(1)Capital expenditures exclude acquisitions of oil and gas properties, capitalized general and administrative expense, capitalized interest expense and asset retirement costs.
Sources and Uses of Cash. Our primary use of cash is related to our drilling, completion and infrastructureDC&I capital expenditures and, to a lesser extent, our leasehold and seismic capital expenditures. For the three and six months ended June 30, 2018,2019, 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 July 31, 2019, our revolving credit facility had a borrowing base of $1.35 billion, with an elected commitment amount of $1.25 billion, with $871.4 million of borrowings 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.
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.
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.
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 August 1, 2018, our revolving credit facility had a borrowing base of $1.0 billion, with an elected commitment amount of $900.0 million, with $513.4 million of borrowings 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 further details of the recent twelfth 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.
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 “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for details of the divestitures that occurred in early 2018 and “Note 14. Subsequent Events” for details of the divestiture that occurred subsequent to June 30, 2018.
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 $275.9$301.8 million and $179.2$275.9 million for the six months ended June 30, 20182019 and 2017,2018, respectively. The changeincrease was driven primarily by an increase in revenues as a result of higher crude oil and NGL production and commodity prices partially offset by an increaseand a decrease in the net cash paid for derivative settlements, partially offset by an increase in operating expenses and cash general and administrative expense and an increase in working capital requirements.expenses.
Net cash used in investing activities was $348.3 million and $85.9 million for the six months ended June 30, 2019 and 2018, respectively. The change was primarily due to the proceeds we received in the first quarter of 2018 related to the divestitures in Eagle Ford and $366.4Niobrara, partially offset by a decrease in cash paid for capital expenditures.
Net cash provided by financing activities was $46.5 million for the six months ended June 30, 2017. The change was due primarily2019 compared to cash received from the divestitures in the Niobrara Formation and Eagle Ford in early 2018, as well as a decrease in cash payments for acquisitions of oil and gas properties, partially offset by an increase in capital expenditures in the Delaware Basin.

Netnet cash used in financing activities was $197.4 million for the six months ended June 30, 2018 and net cash provided by financing activities for the six months ended June 30, 2017 was $185.32018 of $197.4 million. The increase in net cash used in financing activitieschange was primarily due to payments for the redemptions of theour 7.50% Senior Notes and the Preferred Stock as well as dividendsduring the first quarter of 2018 and decreased borrowings, net of repayments under our revolving credit facility during the first half of 2019, partially offset by net cash paid on the Preferred Stock.for settlements of contingent consideration arrangements in January 2019.

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 revolving credit facility” and “—Financing Arrangements—Senior Secured Revolving Credit Facility” for further details of our revolving credit facility.
Contingent consideration arrangements. As part of the ExL Acquisition, as well as in each of the divestitures of our assets in Niobrara, Marcellus, and Utica, we agreed to contingent consideration arrangements, where we will receive or be required to pay certain amounts if commodity prices are greater than specified thresholds. See “Note 10. Derivative Instruments” for further details of each of these contingent consideration arrangements. See also “Item 3. Quantitative and Qualitative Disclosures About Market Risk” for details of the sensitivities to commodity price of each contingent consideration arrangement.
Hedging. 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 capital expenditure program and fixed costs.
The following table sets forth a summary of our outstanding crude oil derivative positions at weighted average contract prices as of August 7, 2018:
Period Type of Contract Index 
Volumes
(Bbls/d)
 
Fixed Price
($/Bbl)
 
Sub-Floor Price
($/Bbl)
 
Floor Price
($/Bbl)
 
Ceiling Price
($/Bbl)
2018              
Q3-Q4 Price Swaps NYMEX WTI 6,000
 
$49.55
 
$—
 
$—
 
$—
Q3-Q4 Three-Way Collars NYMEX WTI 24,000
 
 39.38
 49.06
 60.14
Q3-Q4 Basis Swaps 
LLS-Cushing WTI (1)
 18,000
 5.11
 
 
 
Q3-Q4 Basis Swaps 
Midland WTI-Cushing WTI (2)
 6,000
 (0.10) 
 
 
Q3-Q4 Net Sold Call Options NYMEX WTI 3,388
 
 
 
 71.33
2019              
Q1-Q4 Three-Way Collars NYMEX WTI 15,000
 
 41.00
 49.72
 62.48
Q1 Basis Swaps 
Midland WTI-Cushing WTI (2)
 5,500
 (5.24) 
 
 
Q2 Basis Swaps 
Midland WTI-Cushing WTI (2)
 6,000
 (5.38) 
 
 
Q3 Basis Swaps 
Midland WTI-Cushing WTI (2)
 7,000
 (5.56) 
 
 
Q4 Basis Swaps 
Midland WTI-Cushing WTI (2)
 11,000
 (3.84) 
 
 
Q1-Q4 Net Sold Call Options NYMEX WTI 3,875
 
 
 
 73.66
2020              
Q1 Basis Swaps 
Midland WTI-Cushing WTI (2)
 1,000
 (1.90) 
 
 
Q1-Q4 Net Sold Call Options NYMEX WTI 4,575
 
 
 
 75.98
(1)
Revolving credit facility.The index price paidborrowing base under these basis swapsour revolving credit facility is LLSaffected 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 index price received is Cushing WTI pluscrude oil and natural gas prices from those used to determine our existing borrowing base. Due to the fixed price differential.proposed Merger, our regular redetermination scheduled for the fall of 2019 was postponed to occur on or about February 14, 2020. See “Note 8. Long-Term Debt” and “—Sources and Uses of Cash—Borrowings under revolving credit facility” for further details of our revolving credit facility.
(2)The index
Contingent consideration arrangements. As part of the ExL Acquisition, as well as in each of the divestitures of our assets in Niobrara, Marcellus, and Utica, we agreed to contingent consideration arrangements, where we will receive or be required to pay certain amounts if commodity prices are greater than specified thresholds. See “Note 13. Derivative Instruments” for further details of each of these contingent consideration arrangements and “Item 3. Quantitative and Qualitative Disclosures About Market Risk” for details of the sensitivities to commodity price paid under these basis swaps is Midland WTIfor each contingent consideration arrangement.
Commodity derivative instruments. We use commodity derivative instruments to mitigate the effects of commodity price volatility for a portion of our forecasted sales of production and the index price received is Cushing WTI less the fixed price differential.achieve a more predictable level of cash flow.

TheAs of August 2, 2019, we had the following table sets forth a summary of our outstanding NGLcommodity derivative positionsinstruments at weighted average contract prices as of August 7, 2018:volumes and prices:
Period Type of Contract Index 
Volumes
(Bbls/d)
 
Fixed Price
($/Bbl)
2018        
Q3-Q4 Price Swaps Ethane - OPIS Mont Belvieu Non-TET 2,200
 
$12.01
Q3-Q4 Price Swaps Propane - OPIS Mont Belvieu Non-TET 1,500
 34.23
Q3-Q4 Price Swaps Butane - OPIS Mont Belvieu Non-TET 200
 38.85
Q3-Q4 Price Swaps Isobutane - OPIS Mont Belvieu Non-TET 600
 38.98
Q3-Q4 Price Swaps Natural Gasoline - OPIS Mont Belvieu Non-TET 600
 55.23
The following table sets forth a summary of our outstanding natural gas derivative positions at weighted average contract prices as of August 7, 2018:
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 3Q19 Price Swaps NYMEX WTI 5,000
 
$64.80
 
 
 
 
Crude oil 3Q19 Three-Way Collars NYMEX WTI 27,000
 
 
$41.67
 
$50.96
 
$74.23
 
Crude oil 3Q19 Basis Swaps LLS-WTI Cushing 6,000
 
 
 
 
 
$5.16
Crude oil 3Q19 Basis Swaps WTI Midland-WTI Cushing 9,100
 
 
 
 
 
($4.44)
Crude oil 3Q19 Sold Call Options NYMEX WTI 3,875
 
 
 
 
$81.07
 
                   
Crude oil 4Q19 Price Swaps NYMEX WTI 5,000
 
$64.80
 
 
 
 
Crude oil 4Q19 Three-Way Collars NYMEX WTI 27,000
 
 
$41.67
 
$50.96
 
$74.23
 
Crude oil 4Q19 Basis Swaps WTI Midland-WTI Cushing 9,200
 
 
 
 
 
($4.64)
Crude oil 4Q19 Sold Call Options NYMEX WTI 3,875
 
 
 
 
$81.07
 
                   
Crude oil 2020 Price Swaps NYMEX WTI 3,000
 
$55.06
 
 
 
 
Crude oil 2020 Three-Way Collars NYMEX WTI 12,000
 
 
$45.63
 
$55.63
 
$66.04
 
Crude oil 2020 Basis Swaps WTI Midland-WTI Cushing 10,658
 
 
 
 
 
($1.68)
Crude oil 2020 Sold Call Options NYMEX WTI 4,575
 
 
 
 
$75.98
 
                   
Crude oil 2021 Basis Swaps WTI Midland-WTI Cushing 8,000
 
 
 
 
 
$0.18
Period Type of Contract Index 
Volumes
(MMBtu/d)
 
Fixed Price
($/MMBtu)
 
Ceiling Price
($/MMBtu)
2018          
Q3-Q4 Price Swaps NYMEX HH 25,000
 
$3.01
 
$—
Q3-Q4 Sold Call Options NYMEX HH 33,000
 
 3.25
2019          
Q1-Q4 Sold Call Options NYMEX HH 33,000
 
 3.25
2020          
Q1-Q4 Sold Call Options NYMEX HH 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 3Q19 Basis Swaps Waha-NYMEX Henry Hub 42,500
 
 
 
 
 
($1.49)
Natural gas 3Q19 Sold Call Options NYMEX Henry Hub 33,000
   
 
 
$3.25
 
                   
Natural gas 4Q19 Basis Swaps Waha-NYMEX Henry Hub 42,500
 
 
 
 
 
($1.30)
Natural gas 4Q19 Sold Call Options NYMEX Henry Hub 33,000
   
 
 
$3.25
 
                   
Natural gas 2020 Basis Swaps Waha-NYMEX Henry Hub 29,541
 
 
 
 
 
($0.77)
Natural gas 2020 Sold Call Options NYMEX Henry Hub 33,000
   
 
 
$3.50
 
If cash flows from operations and borrowings under our revolving credit facility and the other sources of cash described under “—Sources and Uses of Cash” are insufficient to fund our remaining 2018 drilling, completion, and infrastructure2019 DC&I capital expenditure plan, we may need to reduce

our capital expenditure plan or seek other financing alternatives. We may not be able to obtain financing needed in the future on terms that would be acceptable to us, or at all. If we cannot obtain adequate financing, we may be required to limit or defer a portion of our remaining 2018 drilling, completion, and infrastructure2019 DC&I capital expenditure plan, thereby potentially adversely affecting the recoverability and ultimate value of our oil and gas properties. 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 prior to scheduled maturities through debt repurchases, either in the open market or in privately negotiated transactions, through debt redemptions or tender offers, or through repayments of bank borrowings.

Contractual Obligations
The following table sets forth estimates of our contractual obligations as of June 30, 20182019 (in thousands):
 July - December 2018 2019 2020 2021 2022 2023 and Thereafter Total
Long-term debt (1)

$—
 
$—
 
$130,000
 
$—
 
$485,000
 
$900,000
 
$1,515,000
Cash interest on senior notes (2)
35,500
 71,000
 71,000
 61,250
 61,250
 82,188
 382,188
Cash interest and commitment fees on revolving credit facility (3)
10,332
 20,214
 20,214
 20,214
 6,963
 
 77,937
Capital leases900
 1,800
 1,050
 
 
 
 3,750
Operating leases2,330
 3,461
 4,219
 3,702
 3,639
 24,658
 42,009
Drilling rig contracts (4)
20,200
 18,677
 1,196
 
 
 
 40,073
Delivery commitments (5)
1,861
 3,706
 2,786
 2,467
 30
 26
 10,876
Produced water disposal commitments (6)
5,283
 18,599
 18,698
 18,708
 18,764
 17,453
 97,505
Asset retirement obligations and other (7)
1,833
 2,972
 657
 376
 239
 15,745
 21,822
Total Contractual Obligations (8)

$78,239
 
$140,429
 
$249,820
 
$106,717
 
$575,885
 
$1,040,070
 
$2,191,160
 July - December 2019 2020 2021 2022 2023 2024 and Thereafter Total
Long-term debt (1)

$—
 
$—
 
$—
 
$841,328
 
$650,000
 
$250,000
 
$1,741,328
Cash interest on senior notes (2)
30,625
 61,250
 61,250
 61,250
 40,938
 41,250
 296,563
Cash interest and commitment fees on revolving credit facility (3)
18,436
 36,873
 36,873
 12,701
 
 
 104,883
Operating leases - other (4)
5,401
 10,125
 6,921
 3,697
 3,680
 21,608
 51,432
Operating leases - drilling rig contracts (5)
15,441
 17,731
 805
 
 
 
 33,977
Delivery commitments (6)
1,911
 2,807
 2,487
 30
 7
 19
 7,261
Produced water disposal commitments (7)
9,787
 20,894
 20,898
 20,954
 10,471
 9,769
 92,773
Asset retirement obligations and other (8)
2,714
 3,039
 629
 494
 437
 21,357
 28,670
Total Contractual Obligations
$84,315
 
$152,719
 
$129,863
 
$940,454
 
$705,533
 
$344,003
 
$2,356,887
 
(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, 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).2022.
(2)Cash interest on senior notes 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.
(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 June 30, 20182019 of 3.74%4.14%. Commitment fees on our revolving credit facility were calculated based on the unused portion of lender commitments as of June 30, 2018,2019, at the applicable commitment fee rate of 0.50%0.500%.
(4)Drilling rig contractsOther operating leases include undiscounted contractual amounts for office space and the use of well equipment, vehicles, and other office equipment. The amounts presented above represent gross contractual obligations and accordingly, otherobligations. Other joint owners in the properties operated by us will generally be billedpay for their working interest share of costs associated with the use of well equipment.
(5)Drilling rig contracts represent gross contractual obligations. Other joint owners in the properties operated by us generally pay for their working interest share of such costs.
(5)(6)Delivery commitments represent gross contractual obligations we have entered into for certain gathering, processing and transportation service agreements which require minimum volumes of natural gas to be delivered. The amounts in the table above reflect the aggregate undiscounted deficiency fees assuming no delivery of any natural gas.
(6)(7)Produced water disposal commitments represent gross 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)(8)
Asset retirement obligations and other are based on estimates and assumptions that affect the reported amounts as of June 30, 20182019. 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.
FinancingOff Balance Sheet Arrangements
Senior Secured Revolving Credit Facility
We currently have a senior secured revolving credit facility with a syndicate of banks that, as of June 30, 2018, had a borrowing base of $1.0 billion, with an elected commitment amount of $900.0 million, and $485.0 million of borrowings outstanding at a weighted average interest rate of 3.74%. 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.
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 was reduced from $900.0 million to $830.0 million, however, the elected commitment amount remained unchanged at $800.0 million.
On May 4, 2018, we entered into the twelfth 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 loans, and amend the covenant limiting payment of dividends and 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.
See “Note 6. Long-Term Debt” for details of 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.

7.50% Senior Notes
During the first quarter of 2018, we redeemed $320.0 million of the outstanding aggregate principal amount of our 7.50% Senior Notes at a price equal to 101.875% of par. Upon the redemptions, we paid $336.9 million, which included redemption premiums of $6.0 million as well as accrued but unpaid interest of $10.9 million from the last interest payment date up to, but not including, the redemption date. As a result of the redemptions, we recorded a loss on extinguishment of debt of $8.7 million, which included the redemption premiums $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.
We have the right to redeem all or a portion of the remaining principal amount of the 7.50% Senior Notes at redemption prices of 101.875% until September 14, 2018 and 100% beginning September 15, 2018 and thereafter, in each case plus accrued and unpaid interest.
Redemption of Preferred Stock
In the first quarter of 2018, we redeemed 50,000 shares of Preferred Stock, representing 20% of the issued and outstanding Preferred Stock. Upon redemption, we paid $50.5 million, which consisted of $1,000.00 per share of Preferred Stock redeemed, plus accrued and unpaid dividends, with a portion of the proceeds from the divestitures of oil and gas properties. See “Note 3. Acquisitions and Divestitures of Oil and Gas Properties” for further details of the divestitures of oil and gas properties. As a result of the redemption, we recorded a loss on redemption of preferred stock of $7.1 million, which included $0.1 million of direct costs incurred as a result of the redemption and a non-cash charge of $7.0 million attributable to the difference between $50.0 million, which was the consideration transferred to the holders of the Preferred Stock excluding accrued and unpaid dividends, and $42.9 million, which was 20% of the carrying value of the Preferred Stock on the date of redemption.
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 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 from the last interest payment date up to, but not including, the redemption date.no off balance sheet arrangements.
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 are described in “Note 2. Summary of Significant Accounting Policies” of the Notes to Consolidated Financial Statements in our 20172018 Annual Report. See “Note 8.10. Preferred Stock”Stock and Common Stock Warrants”, “Note 10.13. Derivative Instruments” and “Note 11.14. Fair Value Measurements” for details of the preferred stockPreferred Stock and contingent consideration 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 June 30, 20182019 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 Price”). The sensitivity analysis is as of June 30, 20182019 and, accordingly, does not consider drilling and completion activity, acquisitions or divestitures of oil and gas properties, production, changes in crude oil and natural gas prices, and changes in development and operating costs occurring subsequent to June 30, 20182019 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)
June 30, 2018 Actual $57.10 $2.71 $1,158 
June 30, 2019 Actual $59.23 $1.81 $1,091 
  
Crude Oil and Natural Gas Price Sensitivity  
Crude Oil and Natural Gas +10% $62.87 $3.01 $1,654 $496 $65.36 $2.12 $1,662 $571
Crude Oil and Natural Gas -10% $51.31 $2.40 $595 ($563) $53.10 $1.50 $473 ($618)
  
Crude Oil Price Sensitivity  
Crude Oil +10% $62.87 $2.71 $1,613 $455 $65.36 $1.81 $1,608 $517
Crude Oil -10% $51.31 $2.71 $647 ($511) $53.10 $1.81 $542 ($549)
  
Natural Gas Price Sensitivity  
Natural Gas +10% $57.10 $3.01 $1,198 $40 $59.23 $2.12 $1,145 $54
Natural Gas -10% $57.10 $2.40 $1,117 ($41) $59.23 $1.50 $1,037 ($54)
The 12-Month Average Realized Price of crude oil, which is the commodity price that our cost center ceiling is most sensitive to, was $59.23 as of June 30, 2019, a decrease of approximately 2% when compared to the 12-Month Average Realized Price of crude oil as of March 31, 2019 of $60.54. We currently estimate that the 12-Month Average Realized Price of crude oil as of September 30, 2019 will be $57.62, which is based on the average realized price for sales of crude oil on the first calendar day of each month for the first 11 months and an estimate for the twelfth month based on a quoted forward price. Utilizing this estimated 12-Month Average Realized Price, we estimate that the third quarter of 2019 cost center ceiling will exceed the net book value, less related deferred income taxes, resulting in no impairment of proved oil and gas properties.
This estimate assumes that all other inputs and assumptions are as of June 30, 2019, other than the price of crude oil, and remain unchanged. As such, drilling and completion activity, acquisitions or dispositions of oil and gas properties, production, and changes in development and operating costs occurring subsequent to June 30, 2019 may require revisions to estimates of proved reserves, which would impact the calculation of the cost center ceiling.
Income Taxes
Primarily asIncome taxes are recognized based on earnings reported for tax return purposes in addition to a resultprovision 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 deferred tax assets, including projected future taxable income, the reversal of existing temporary differences, taxable income in carryback years and available tax planning strategies.
For the year ended December 31, 2018, we maintained a full valuation allowance against our deferred tax assets based 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 December 31, 2018, primarily due to impairments of proved oil and gas properties recognized beginning in the third quarterfirst three quarters of 20152016, which limited our ability to consider subjective positive evidence, such as its projections of

future taxable income. However, as of March 31, 2019 and continuing through the third quarter of 2016, we had a cumulative historical three year pre-tax loss and a net deferred tax asset position at June 30, 2018. We have assessed the realizability of our deferred tax assets and, beginning in the third quarter of 2015 and continuing through the second quarter of 2018, have concluded that it was more likely than not our deferred tax assets will not be realized and a valuation allowance was required. Based on current estimates, we anticipate that during 2019, we will no longer beare in a cumulative historical three year pre-tax loss, at which time, basedincome position. Based on analysis of availablethis factor, as well as other positive evidence we may concludeincluding projected future taxable income for the current and future years, concluded that it is more likely than not ourthat the deferred tax assets willwould be realized. This conclusion couldAs a result, in a portion or allwe have released $177.7 million of the remainingfederal valuation allowance to bethrough June 30, 2019, which was recognized in earnings as an income tax benefit. See “Note 5. Income Taxes” for further details
We will continue to assess the timing and amount of ouradditional releases of the valuation allowance based on available information each reporting period, such as our projections of June 30, 2018.future taxable income, and currently anticipate that the remaining federal valuation allowance will be released by December 31, 2019.
As of June 30, 2018,2019, we have estimated U.S. federal net operating loss carryforwards of $1.2 billion.$1.1 billion that, if not utilized in earlier periods, will expire between 2026 and 2037. 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 offeringsoffering associated with the ExL Acquisition in 2017, as well as the common stock offering in August 2018, our calculated ownership change percentage increased, however,increased. However, as of June 30, 2018,2019, 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 See “Part II. Other Information—Item 1A. Risk Factors—The Merger as interest expense. We followwell as other stock transactions could lead to a limitation on the tax law ordering approachutilization of our loss carryforwards to determine the sequence in which deferred tax assets and other tax attributes are utilized.

reduce future taxable income.”
Recently Adopted and Recently Issued Accounting Pronouncements
See “Note 2. Summary of Significant Accounting Policies” for discussion of the pronouncements we recently adopted as well as the recently issued accounting pronouncements from the Financial Accounting Standards Board.adopted.
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;
the expected timetable for completing the proposed Merger;
the results, effects, benefits, and synergies of the proposed Merger;
future opportunities for the combined company;

future financial performance and condition;
guidance and any other statements regarding Callon’s or our future expectations, beliefs, plans, objectives, financial conditions, assumptions or future events or performance;
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 and realize any expected benefits or effects of any acquisitions or the timing, final purchase price, financing or consummation of any acquisitions;
results of the Devon Properties;
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.events; and
realization and other matters concerning deferred tax assets.
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, failure to obtain the required votes of Callon’s or our shareholders to approve the Merger and related matters, whether any redemption of the Preferred Stock will be necessary or will occur prior to the closing of the Merger, the risk that a condition to closing of the proposed Merger may not be satisfied, that either party may terminate the merger agreement or that the closing of the proposed Merger might be delayed or not occur at all, potential adverse reactions or changes to business or employee relationships, including those resulting from the announcement or completion of the Merger, the diversion of management time on transaction-related issues, the ultimate timing, outcome and results of integrating the operations of Callon and Carrizo, the effects of the business combination of Callon and Carrizo, including the combined company’s future financial condition, results of operations, strategy and plans, the ability of the combined company to realize anticipated synergies in the time frame expected or at all, changes in capital markets and the ability of the combined company to finance operations in the manner expected, certain regulatory approvals of the Merger, the effects of commodity prices, and the risks of oil and gas activities, 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, 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 the anyan acquisition, 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 20172018 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” in our 20172018 Annual Report. Except as disclosed below, there have been no material changes from the disclosure made in our 20172018 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 six months ended June 30, 20182019 as well as the impactsimpact on the crude oil, NGL, and natural gas revenues assuming a 10% fluctuationincrease and decrease in our average realized crude oil, NGL, and natural gas prices, excluding the impact of derivative settlements:  
 Three Months Ended June 30, 2018 Three Months Ended June 30, 2019
 Crude oil NGLs Natural gas Total Crude oil NGLs Natural gas Total
 (In thousands) (In thousands)
Revenues 
$229,798
 
$21,269
 
$12,906
 
$263,973
 
$245,212
 
$14,159
 
$5,596
 
$264,967
                
Impact of a 10% fluctuation in average realized prices 
$22,980
 
$2,127
 
$1,291
 
$26,398
 
$24,521
 
$1,416
 
$560
 
$26,497
 Six Months Ended June 30, 2018 Six Months Ended June 30, 2019
 Crude oil NGLs Natural gas Total Crude oil NGLs Natural gas Total
 (In thousands) (In thousands)
Revenues 
$424,717
 
$38,171
 
$26,365
 
$489,253
 
$447,956
 
$30,996
 
$19,055
 
$498,007
                
Impact of a 10% fluctuation in average realized prices 
$42,472
 
$3,817
 
$2,636
 
$48,925
 
$44,793
 
$3,099
 
$1,911
 
$49,803
We use commodity derivative instruments to reduce our exposure tomitigate the effects of commodity price volatility for a portion of our forecasted sales of production and thereby achieve a more predictable level of cash flows to support our capital expenditure program and fixed costs.flow. We do not enter into commodity derivative instruments for speculative or trading purposes. As of June 30, 2018,2019, our commodity derivative instruments consisted of price swaps, three-way collars, basis swaps, and purchased and sold call options.options, and basis swaps. See “Note 10.13. Derivative Instruments” for further discussion of our commodity derivative instruments as of June 30, 2019.

The following tables set forth the cash received (paid) for commodity derivative settlements, net, excluding deferred premium obligations, for the three and six months ended June 30, 2019 as well as the impact on the cash received (paid) for commodity derivative settlements, net assuming a 10% increase and decrease in the respective settlement prices:
  Three Months Ended June 30, 2019
  Crude oil NGLs Natural gas Total
  (In thousands)
Cash received (paid) for commodity derivative settlements, net 
($3,698) 
$—
 
$1,925
 
($1,773)
         
Impact of a 10% increase in settlement prices 
($6,989) 
$—
 
$581
 
($6,408)
Impact of a 10% decrease in settlement prices 
$3,572
 
$—
 
($581) 
$2,991
  Six Months Ended June 30, 2019
  Crude oil NGLs Natural gas Total
  (In thousands)
Cash received (paid) for commodity derivative settlements, net 
($4,018) 
$623
 
$1,625
 
($1,770)
         
Impact of a 10% increase in settlement prices 
($9,565) 
($378) 
$219
 
($9,724)
Impact of a 10% decrease in settlement prices 
$12,426
 
$378
 
($281) 
$12,523
In January 2019, we paid the first annual settlement of the Contingent ExL Consideration and received the first annual settlements of the Contingent Niobrara Consideration and the Contingent Utica Consideration as the specified pricing thresholds for fiscal year 2018 were exceeded. See “Note 13. Derivative Instruments” for further details on the cash received (paid) for settlements of contingent consideration arrangements, net.
There were no settlements of contingent consideration arrangements for the three months ended June 30, 2019. The following table sets forth the cash received (paid) for settlements of contingent consideration arrangements, net for the six months ended June 30, 2019 as well as the impact that would have occurred on the cash received (paid) for settlements of contingent consideration arrangements, net assuming a 10% increase and decrease in the respective settlement prices:
  Six Months Ended June 30, 2019
  Contingent ExL Consideration Contingent Niobrara Consideration Contingent Marcellus Consideration Contingent Utica Consideration
  (In thousands)
Cash received (paid) for settlements of contingent consideration arrangements, net 
($50,000) 
$5,000
 
$—
 
$5,000
         
Impact of a 10% increase in settlement prices 
$—
 
$—
 
$3,000
 
$—
Impact of a 10% decrease in settlement prices 
$—
 
$—
 
$—
 
$—
The primary drivers of our commodity derivative instrument fair values are the underlying forward crude oil NGL and natural gas derivative positionsprice curves. The following table sets forth the average forward crude oil and natural gas price curves as of June 30, 2018 and “Note 14. Subsequent Events”2019 for further detailseach of our crude oil derivative positions entered into subsequent to June 30, 2018.
The fair value of ourthe years in which we have commodity derivative contracts are largely determined by estimates of the forward curves of the relevant price indices. instruments:
  2019 2020 2021
Crude oil:      
NYMEX WTI $58.32 $56.23 $54.18
LLS-WTI Cushing $4.02 $3.70 $3.00
WTI Midland-WTI Cushing $0.40 $0.70 $0.95
Natural gas:      
NYMEX Henry Hub $2.38 $2.54 $2.58
Waha-NYMEX Henry Hub ($0.96) ($1.11) ($0.42)

The following table sets forth the fair values as of June 30, 2018,2019 of our commodity derivative instruments, excluding deferred premium obligations, as well as the impact on the fair values assuming a 10% increase and decrease in the respectiveunderlying forward curves:crude oil and natural gas price curves that are shown above:
  Crude oil NGLs Natural gas Total
  (In thousands)
Fair value liability as of June 30, 2018 
($106,405) 
($4,934) 
($1,780) 
($113,119)
         
Fair value with a 10% increase in the forward curve 
($183,728) 
($7,980) 
($5,144) 
($196,852)
Increase in fair value liability (77,323) (3,046) (3,364) (83,733)
         
Fair value with a 10% decrease in the forward curve 
($44,572) 
($1,942) 
$386
 
($46,128)
Decrease in fair value liability 61,833
 2,992
 2,166
 66,991
  Crude oil NGLs Natural gas Total
  (In thousands)
Fair value (liability) asset as of June 30, 2019 
($5,416) 
$—
 
$45
 
($5,371)
         
Impact of a 10% increase in forward commodity prices 
($40,182) 
$—
 
$1,075
 
($39,107)
Impact of a 10% decrease in forward commodity prices 
$29,556
 
$—
 
($1,446) 
$28,110
We determined that the contingent consideration arrangements are not clearly and closely related to the purchase and sale agreement for the applicable acquisition or divestiture, and therefore bifurcated these embedded features and reflected the associated assets and liabilities at fair value in the consolidated financial statements. 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 future commodity prices,forward oil and gas price curves, volatility factors for the future commodity prices and a risk adjusted discount rate.rates. See “Note 10. Derivative Instruments” and “Note 11.14. Fair Value Measurements” for further details.discussion.
The following table sets forth the fair values of the contingent consideration arrangements as of June 30, 20182019, as well as the impact on the fair values assuming a 10% increase and decrease in the respective future commodity prices:underlying forward oil and gas price curves that are shown above:
  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 as of June 30, 2018 
($102,055) 
$9,970
 
$1,530
 
$10,545
10% increase in commodity price (107,210) 10,960
 2,580
 11,465
10% decrease in commodity price (94,155) 8,735
 920
 9,340
  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 remaining potential (payment) receipt 
($75,000) 
$10,000
 
$6,000
 
$10,000
         
Fair value (liability) asset as of June 30, 2019 
($60,798) 
$4,947
 
$450
 
$6,057
Impact of a 10% increase in forward commodity prices 
($3,576) 
$1,428
 
$262
 
$1,096
Impact of a 10% decrease in forward commodity prices 
$6,927
 
($1,831) 
($197) 
($1,649)
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 (the “Senior Notes”), but can impact their fair values. As of June 30, 2018, we had approximately $1.5 billion of long-term debt outstanding, net of unamortized premiums and debt issuance costs. Of this amount, approximately $1.0 billion was fixed-rate debt, net of unamortized premiums and debt issuance costs, with a weighted average interest rate of 7.10%. See “Note 11.14. Fair Value Measurements” for further details ondiscussion.
The following table sets forth the fair valueprincipal amount of our 7.50% Senior Notes, 6.25% Senior Notes and 8.25% Senior Notes.the borrowings on our revolving credit facility outstanding as of June 30, 2019, as well as the associated weighted average interest rates, and the impact on our interest expense of a 1% increase or decrease in the interest rate on outstanding borrowings on our revolving credit facility:
  Revolving Credit Facility Senior Notes
  (In thousands except for percentages)
June 30, 2019    
Amount outstanding 
$841,328
 
$900,000
Weighted average interest rate 4.14% 6.81%
     
Three Months Ended June 30, 2019    
Impact of a 1% increase in interest rate 
$2,335
  
Impact of a 1% decrease in interest rate 
($2,335) 

     
Six Months Ended June 30, 2019    
Impact of a 1% increase in interest rate 
$4,418
  
Impact of a 1% decrease in interest rate 
($4,418)  
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 June 30, 20182019 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 June 30, 20182019 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 2018 Annual Report to reflect developments during the quarter ended June 30, 2019 and should be read together with the corresponding disclosure in the 2018 Annual Report.
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 petitioned the Texas Supreme Court for review, which was granted.  Oral arguments before the Texas Supreme Court were held on December 4, 2018 and, on June 28, 2019, a majority decision was handed down affirming the Twelfth Court of Appeals ruling in favor of the Company. On July 8, 2019, the plaintiff notified the Company that it intends to file a motion for rehearing before the Texas Supreme Court.  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 previously, the Twelfth Court of Appeals at Tyler, Texas found in favor of the Company on all grounds and this ruling was upheld by the Texas Supreme Court.
Item 1A. Risk Factors
ThereExcept as disclosed below, there were no material changes to the factors discussed in “Part I. Item 1A. Risk Factors” in our 20172018 Annual Report. However, the risk factors included in “Part I. Item 1A. Risk Factors” in our 2018 Annual Report should be read in conjunction with the additional risk factors set forth below in this Quarterly Report on Form 10-Q.
The following risk factors relate to the proposed Merger with Callon.
The transactions contemplated by the Merger Agreement are subject to conditions, including certain conditions that may not be satisfied or completed on a timely basis or at all. Failure to complete the transactions contemplated by the Merger Agreement, including the Merger, could have material and adverse effects on us.
Completion of the Merger is subject to a number of conditions, including, among other things, (i) obtaining the approval by holders of Callon’s common stock of the issuance of Callon’s common stock in the Merger and of certain amendments to Callon’s certificate of incorporation to increase the authorized number of shares of Callon’s common stock, (ii) the adoption of the Merger Agreement and the Merger by the holders of Callon’s common stock, (iii) obtaining the approval by the holders of our common stock of the Merger Agreement, (iv) either (a) obtaining the approval of the holders of the Preferred Stock of the Merger Agreement or (b) the

Preferred Deposit having been deposited and the Preferred Redemption having occurred, (v) the absence of any law or order prohibiting the consummation of the Merger, (vi) the effectiveness of the registration statement on Form S-4 pursuant to which the shares of Callon’s common stock issuable in the Merger are registered with the SEC, (vii) the authorization for listing of the shares of Callon’s common stock issuable in the Merger on the New York Stock Exchange, (ix) the expiration or termination of the applicable waiting periods under the HSR Act, which was terminated effective August 6, 2019, and (x) delivery of opinions of counsel to us and to Callon to the effect that the Merger will qualify as a reorganization within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as amended. Such conditions, some of which are beyond our control, may not be satisfied or waived in a timely matter and therefore make the completion and timing of the completion of the Merger uncertain. In addition, the governmental authorities from which the regulatory approvals are required may impose conditions on the completion of the Merger or require changes to the terms of the Merger or Merger Agreement.
If the transactions contemplated by the Merger Agreement are not completed, our ongoing business may be adversely affected and, without realizing any of the benefits of having completed the Merger, we will be subject to a number of risks, including the following: we will be required to pay our costs relating to the Merger, such as legal, accounting, financial advisory and printing fees, whether or not the Merger is completed; time and resources committed by our management to matters relating to the Merger could otherwise have been devoted to pursuing other beneficial opportunities; the market price of our common stock could be impacted to the extent that the current market price reflects a market assumption that the Merger will be completed; and if the Merger Agreement is terminated and our Board of Directors seeks another business combination, our shareholders cannot be certain that we will be able to find a party willing to enter into a transaction as attractive to us as the Merger. 
In addition, the Merger Agreement contains certain termination rights for both Callon and us, which if exercised, will also result in the transactions contemplated by the Merger Agreement not being consummated. If the Merger Agreement is terminated under certain circumstances, we could be required to pay Callon a termination fee of $47.4 million. In other circumstances, upon termination of the Merger Agreement, we could be required to pay Callon up to $7.5 million for costs, fees and expenses incurred by Callon in connection with the Merger. See our Current Report on Form 8-K filed with the SEC on July 15, 2019 for a more detailed discussion of the conditions to the completion of the Merger and termination rights under the Merger Agreement.
We will be subject to business uncertainties while the Merger is pending, which could adversely affect our business.
It is possible that certain persons with whom we have a business relationship may delay certain business decisions relating to us in connection with the pendency of the Merger or they might decide to seek to terminate, change or renegotiate their relationships with us as a result of the Merger, which could negatively affect our revenues, earnings and cash flows, as well as the market price of our common stock, regardless of whether the Merger is completed. Also, our ability to attract, retain and motivate employees may be impaired until the Merger is completed and for a period of time thereafter as current and prospective employees may experience uncertainty about their roles within the combined company following the Merger.
In addition, under the terms of the Merger Agreement, we are subject to certain restrictions on the conduct of our business prior to the completion of the Merger, which may adversely affect our ability to execute certain of our business strategies, including the ability in certain cases to modify or enter into certain contracts, acquire or dispose of assets, hire or terminate certain employees or take other specified actions regarding employees and compensation, or incur or pre-pay certain indebtedness, incur encumbrances, make capital expenditures, issue shares or settle claims. Such limitations could negatively affect our business and operations prior to the completion of the Merger.
Our shareholders will have a reduced ownership and voting interest after the Merger and will exercise less influence over the policies of the combined company than they now have on the policies of Carrizo.
Our shareholders currently have the right to vote in the election of our Board of Directors and on other matters affecting Carrizo. Immediately after the merger is completed, it is expected that our current shareholders will own approximately 46% of the combined company’s common stock outstanding and current Callon shareholders will own approximately 54% of the combined company’s common stock outstanding.
As a result, our current shareholders will have less influence on the management and policies of Callon than they now have on the management and policies of Carrizo.
The market price of shares of Callon common stock may decline in the future as a result of the sale of shares of Callon common stock held by Carrizo shareholders or Callon’s shareholders.
Following their receipt of shares of Callon common stock as consideration in the Merger, our shareholders may seek to sell the shares of Callon common stock delivered to them, and the Merger Agreement contains no restriction on the ability of our shareholders to sell such shares of Callon common stock following completion of the Merger. Other shareholders of Callon may also seek to sell shares of Callon common stock held by them following, or in anticipation of, completion of the Merger. These sales (or the perception that these sales may occur), coupled with the increase in the outstanding number of shares of Callon common stock to be issued in the Merger, may affect the market for, and the market price of, Callon common stock in an adverse manner.

The exchange ratio is fixed and will not be adjusted in the event of any change in either our or Callon’s stock price.
At the effective time of the Merger, each share of our common stock outstanding immediately prior to the effective time will be converted into the right to receive 2.05 shares of Callon common stock. This exchange ratio will not be adjusted for changes in the market price of either our common stock or Callon’s common stock between the date of signing the Merger Agreement and completion of the Merger. Changes in the price of Callon’s common stock prior to the Merger will affect the value of Callon’s common stock that our shareholders will receive on the date of such Merger.
The prices of Callon’s common stock and our common stock at the closing of the Merger may vary from their prices on the date the Merger Agreement was executed and on the date of each special meeting in connection with the Merger. As a result, the value represented by the exchange ratio may also vary, and you will not know or be able to calculate with certainty the market value of the merger consideration you will receive upon completion of the Merger with Callon.
The Merger Agreement limits our ability to pursue alternatives to the merger with Callon.
The Merger Agreement entered into with Callon contains provisions that may discourage a third party from submitting a competing proposal that might result in greater value to our shareholders than the merger with Callon or may result in a potential competing acquirer of Carrizo proposing to pay a lower per share price to acquire us than it might otherwise have proposed to pay. These provisions include a general prohibition on us from soliciting or, subject to certain exceptions relating to proposals that could reasonably be expected to lead to Company Superior Proposals (as defined in the Merger Agreement), entering into discussions with any third party regarding any alternative business combination or offer for an alternative business combination. Under differing specified circumstances, the Company could be required to pay Callon a termination fee of $47.4 million or to reimburse Callon up to $7.5 million in expenses for termination of the Merger Agreement including in connection with matters that may relate to an alternative business combination. These and other provisions of the Merger Agreement could discourage a potential third party that might have an interest in acquiring all or a significant portion of Carrizo or pursuing an alternative transaction with us from considering or proposing such a transaction.
Uncertainties associated with the Merger may cause a loss of management personnel and other key employees, which could adversely affect the future business and operations of the combined company.
Whether or not the Merger is completed, the announcement and pendency of the Merger could disrupt the businesses of the Company. We are dependent on the experience and industry knowledge of our senior management and other key employees to execute our business plans. Current and prospective employees of the Company may experience uncertainty about their roles within the combined company following the Merger, which may have an adverse effect on our current ability to attract or retain key management and other key personnel regardless of whether the Merger is completed.
Even if the Merger is completed, the integration of Carrizo by the combined company may not be as successful as anticipated.
The success of the Merger will depend, in part, on Callon’s ability to realize the anticipated benefits and cost savings from combining our and Callon’s businesses, and there can be no assurance that the combined company will be able to successfully integrate us or otherwise realize the expected benefits of the Merger. Difficulties in integrating us into the combined company may result in the combined company performing differently than expected, in operational challenges or in the failure to realize anticipated expense-related efficiencies. Potential difficulties that may be encountered in the integration process include, among other factors:
the inability to successfully integrate our businesses into the combined company in a manner that permits Callon to achieve the full revenue and cost savings anticipated from the Merger;
complexities associated with managing the larger, more complex, integrated business;
not realizing anticipated operating synergies;
integrating personnel from the two companies and the loss of key employees;
potential unknown liabilities and unforeseen expenses, delays or certain regulatory approvals associated with the Merger;
integrating relationships with customers, vendors and business partners;
performance shortfalls at one or both of the companies as a result of the diversion of management’s attention caused by completing the Merger and integrating our operations into the combined company; and
the disruption of, or the loss of momentum in, each company’s ongoing business or inconsistencies in standards, controls, procedures and policies.
Completion of the Merger may trigger change in control or other provisions in certain agreements to which we are a party.
The completion of the Merger may trigger change in control or other provisions in certain agreements to which we are a party. If we and Callon are unable to negotiate waivers of those provisions, the counterparties may exercise their rights and remedies under

the agreements, potentially terminating the agreements or seeking monetary damages which will adversely affect Callon following the Merger. Even if we and Callon are able to negotiate waivers, the counterparties may require a fee for such waivers or seek to renegotiate the agreements.
A future issuance, sale or exchange of our stock or warrants, such as the Merger, could trigger a limitation on the utilization of our 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 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 common stock warrants (including the Preferred Stock and 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. We do not believe we have a Section 382 limitation on the ability to utilize our U.S. loss carryforwards as of June 30, 2019. However, future issuances, sales or exchanges of our stock (including, potentially, relatively small transactions and transactions beyond our control) and transactions prior to the expected time of the Merger 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 whether or not the Merger takes place. We believe that the Merger, if consummated, will result in an ownership change based on information currently available. Any such limitation could cause some U.S. loss carryforwards incurred prior to January 1, 2018, which are subject to a limited carryforward period, to expire before we or Callon would be able to utilize them to reduce taxable income in future periods. This could possibly subject us or, following the merger, Callon to income taxes either would not otherwise be subject to and a write down of our tax assets. Any limitation associated with an ownership change under Section 382 of the Code for U.S. loss carryforwards incurred subsequent to January 1, 2018, which are not subject to a limited carryforward period, could possibly result in us or, following the merger, Callon becoming a cash tax payer sooner than we otherwise would absent the limitation.
We and Callon are expected to incur significant transaction fees and costs in connection with the Merger, which may be in excess of those anticipated by Callon and us.
We have incurred, and are expected to continue to incur, a number of non-recurring costs associated with negotiating and completing the Merger, combining the operations of the two companies and achieving desired synergies. These fees and costs have been, and will continue to be, substantial and, in many cases, will be borne by us whether or not the transaction is completed. A substantial majority of our non-recurring expenses will consist of transaction costs related to the Merger and include, among others, fees paid to financial, legal, accounting and other advisers, and filing fees. We and Callon will continue to assess the magnitude of these costs, and additional unanticipated costs may be incurred in connection with the Merger. The costs described above and any unanticipated costs and expenses, many of which will be borne by us even if the Merger is not completed, and if the Merger is completed, could have an adverse effect on Callon’s financial condition and operating results following the completion of the transaction.
We may be a target of securities class action and derivative lawsuits, which could result in substantial costs and may delay or prevent the Merger from being completed.
Securities class action lawsuits and derivative lawsuits are often brought against public companies that have entered into business combination agreements. Even if the lawsuits are without merit, defending against these claims can result in substantial costs and divert management time and resources. An adverse judgment could result in monetary damages, which could have a negative impact on our liquidity and financial condition. Additionally, if a plaintiff is successful in obtaining an injunction prohibiting completion of the Merger, that injunction may delay or prevent the Merger from being completed, which may adversely affect our business, financial position and results of operations.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
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
3.12.1
 
+*10.1
 
*31.1
*31.2
*32.1
*32.2
*101101.INSXBRL Instance Document - the instance document does not appear in the Interactive Data FilesFile because its XBRL tags are embedded within the Inline XBRL document.
*101.SCHXBRL Taxonomy Extension Schema Document.
*101.CALXBRL Taxonomy Extension Calculation Linkbase Document.
*101.DEFXBRL Taxonomy Extension Definition Linkbase Document.
*101.LABXBRL Taxonomy Extension Label Linkbase Document.
*101.PREXBRL Taxonomy Extension Presentation Linkbase Document.
*104Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101).
 
Incorporated by reference as indicated.
*Filed herewith.
+Management contract or compensatory plan or arrangement.




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:August 7, 20182019 By:/s/ David L. Pitts
    
Vice President and Chief Financial Officer
(Principal Financial Officer)
    
Date:August 7, 20182019 By:/s/ Gregory F. Conaway
    
Vice President and Chief Accounting Officer
(Principal Accounting Officer)


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