UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 ________________________________________________________ 
FORM 10-Q
 _________________________________________________________  
xQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended SeptemberJune 30, 20182019
OR
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from             to            
Commission File Number 001-35410
_________________________________________________________  
Matador Resources Company
(Exact name of registrant as specified in its charter)
  _________________________________________________________
Texas27-4662601
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
  
5400 LBJ Freeway,
Suite 1500
Dallas, Texas
75240
Dallas,Texas
(Address of principal executive offices)(Zip Code)
(972) (972) 371-5200
(Registrant’s telephone number, including area code)
 _________________________________________________________
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading symbol(s)Name of each exchange on which registered
Common Stock, par value $0.01 per shareMTDRNew York Stock Exchange
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.     xYes¨  No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    xYes¨  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.
Large accelerated filer x Accelerated filer ¨
    
Non-accelerated filer 
¨
 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    x  No
As of OctoberJuly 31, 2018,2019, there were 116,333,766116,646,526 shares of the registrant’s common stock, par value $0.01 per share, outstanding.

MATADOR RESOURCES COMPANY
FORM 10-Q
FOR THE QUARTER ENDED SEPTEMBERJUNE 30, 20182019
TABLE OF CONTENTS
 Page



Part I — FINANCIAL INFORMATION
Item 1. Financial Statements — Unaudited
Matador Resources Company and Subsidiaries
CONDENSED CONSOLIDATED BALANCE SHEETS — UNAUDITED
(In thousands, except par value and share data)
September 30,
2018
 December 31,
2017
June 30,
2019
 December 31,
2018
ASSETS      
Current assets      
Cash$45,942
 $96,505
$59,950
 $64,545
Restricted cash7,066
 5,977
24,812
 19,439
Accounts receivable      
Oil and natural gas revenues81,422
 65,962
66,921
 68,161
Joint interest billings55,390
 67,225
61,872
 61,831
Other10,060
 8,031
18,386
 16,159
Derivative instruments4
 1,190
8,271
 49,929
Lease and well equipment inventory18,758
 5,993
20,281
 17,564
Prepaid expenses and other assets6,790
 6,287
12,891
 8,057
Total current assets225,432
 257,170
273,384
 305,685
Property and equipment, at cost      
Oil and natural gas properties, full-cost method      
Evaluated3,506,479
 3,004,770
4,094,417
 3,780,236
Unproved and unevaluated1,241,529
 637,396
1,234,176
 1,199,511
Midstream and other property and equipment408,436
 281,096
Midstream properties492,420
 428,025
Other property and equipment25,170
 22,041
Less accumulated depletion, depreciation and amortization(2,234,470) (2,041,806)(2,462,840) (2,306,949)
Net property and equipment2,921,974
 1,881,456
3,383,343
 3,122,864
Other assets6,796
 7,064
   
Derivative instruments2,202
 
Deferred income taxes7,149
 20,457
Other assets85,373
 6,512
Total other assets94,724
 26,969
Total assets$3,154,202
 $2,145,690
$3,751,451
 $3,455,518
LIABILITIES AND SHAREHOLDERS’ EQUITY      
Current liabilities      
Accounts payable$32,491
 $11,757
$19,821
 $66,970
Accrued liabilities178,830
 174,348
191,608
 170,855
Royalties payable67,023
 61,358
66,130
 64,776
Amounts due to affiliates12,998
 10,302
10,200
 13,052
Derivative instruments19,740
 16,429
Advances from joint interest owners12,354
 2,789
4,725
 10,968
Amounts due to joint ventures2,373
 4,873
1,588
 2,373
Other current liabilities942
 750
42,703
 1,028
Total current liabilities326,751
 282,606
336,775
 330,022
Long-term liabilities      
Borrowings under Credit Agreement325,000
 
205,000
 40,000
Borrowings under San Mateo Credit Facility240,000
 220,000
Senior unsecured notes payable740,063
 574,073
1,038,625
 1,037,837
Asset retirement obligations28,706
 25,080
30,686
 29,736
Derivative instruments4,996
 
189
 83
Deferred income taxes14,845
 13,221
Other long-term liabilities6,243
 6,385
44,728
 4,962
Total long-term liabilities1,105,008
 605,538
1,574,073
 1,345,839
Commitments and contingencies (Note 9)

 

Commitments and contingencies (Note 10)


 


Shareholders’ equity      
Common stock - $0.01 par value, 160,000,000 shares authorized; 116,506,743 and 108,513,597 shares issued; and 116,348,548 and 108,510,160 shares outstanding, respectively1,165
 1,085
Common stock - $0.01 par value, 160,000,000 shares authorized; 116,866,013 and 116,374,503 shares issued; and 116,647,704 and 116,353,590 shares outstanding, respectively1,169
 1,164
Additional paid-in capital1,923,030
 1,666,024
1,955,504
 1,924,408
Accumulated deficit(372,990) (510,484)(216,472) (236,277)
Treasury stock, at cost, 158,195 and 3,437 shares, respectively(4,039) (69)
Treasury stock, at cost, 218,309 and 20,913 shares, respectively(3,724) (415)
Total Matador Resources Company shareholders’ equity1,547,166
 1,156,556
1,736,477
 1,688,880
Non-controlling interest in subsidiaries175,277
 100,990
104,126
 90,777
Total shareholders’ equity1,722,443
 1,257,546
1,840,603
 1,779,657
Total liabilities and shareholders’ equity$3,154,202
 $2,145,690
$3,751,451
 $3,455,518

Matador Resources Company and Subsidiaries
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS — UNAUDITED
(In thousands, except per share data)
Three Months Ended 
 September 30,
 Nine Months Ended 
 September 30,
Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
2018 2017 2018 20172019 2018 2019 2018
Revenues              
Oil and natural gas revenues$216,282
 $134,948
 $607,255
 $363,559
$211,060
 $209,019
 $404,329
 $390,973
Third-party midstream services revenues6,809
 3,218
 13,284
 6,871
14,359
 3,407
 26,197
 6,475
Sales of purchased natural gas8,963
 
 20,194
 
Realized gain (loss) on derivatives5,424
 485
 (1,322) (1,176)1,165
 (2,488) 4,435
 (6,746)
Unrealized (loss) gain on derivatives(21,337) (12,372) (9,492) 21,449
Unrealized gain (loss) on derivatives6,157
 1,429
 (39,562) 11,845
Total revenues207,178
 126,279
 609,725
 390,703
241,704
 211,367
 415,593
 402,547
Expenses              
Production taxes, transportation and processing20,215
 15,666
 58,116
 40,348
21,542
 20,110
 41,207
 37,901
Lease operating22,531
 16,689
 69,685
 48,486
26,351
 25,006
 57,514
 47,154
Plant and other midstream services operating7,291
 3,096
 17,187
 8,379
8,422
 5,676
 17,738
 9,896
Purchased natural gas8,172
 
 18,806
 
Depletion, depreciation and amortization70,457
 47,800
 192,664
 123,066
80,132
 66,838
 156,999
 122,207
Accretion of asset retirement obligations387
 323
 1,126
 937
420
 375
 834
 739
General and administrative18,444
 16,156
 55,739
 49,671
19,876
 19,369
 38,166
 37,295
Total expenses139,325
 99,730
 394,517
 270,887
164,915
 137,374
 331,264
 255,192
Operating income67,853
 26,549
 215,208
 119,816
76,789
 73,993
 84,329
 147,355
Other income (expense)              
Net (loss) gain on asset sales and inventory impairment(196) 16
 (196) 23
Inventory impairment(368) 
 (368) 
Interest expense(10,340) (8,550) (26,835) (26,229)(18,068) (8,004) (35,997) (16,495)
Prepayment premium on extinguishment of debt(31,226) 
 (31,226) 
Other (expense) income(976) (36) (1,275) 1,956
Other expense(423) (352) (532) (299)
Total other expense(42,738) (8,570) (59,532) (24,250)(18,859) (8,356) (36,897) (16,794)
Income before income taxes57,930
 65,637
 47,432
 130,561
Income tax provision       
Deferred12,858
 
 11,845
 
Total income tax provision12,858
 
 11,845
 
Net income25,115
 17,979
 155,676
 95,566
45,072
 65,637
 35,587
 130,561
Net income attributable to non-controlling interest in subsidiaries(7,321) (2,940) (18,182) (8,034)(8,320) (5,831) (15,782) (10,861)
Net income attributable to Matador Resources Company shareholders$17,794
 $15,039
 $137,494
 $87,532
$36,752
 $59,806
 $19,805
 $119,700
Earnings per common share    
 
    
 
Basic$0.15
 $0.15
 $1.22
 $0.87
$0.32
 $0.53
 $0.17
 $1.08
Diluted$0.15
 $0.15
 $1.21
 $0.87
$0.31
 $0.53
 $0.17
 $1.08
Weighted average common shares outstanding              
Basic116,358
 100,365
 112,659
 100,141
116,571
 112,706
 116,469
 110,809
Diluted116,912
 100,504
 113,208
 100,580
116,903
 113,056
 116,839
 111,280

Matador Resources Company and Subsidiaries
CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS’ EQUITY — UNAUDITED
(In thousands)
For the NineThree and Six Months Ended SeptemberJune 30, 20182019
            Total shareholders’ equity attributable to Matador Resources Company                Total shareholders’ equity attributable to Matador Resources Company    
                              
                              
            Non-controlling interest in subsidiaries Total shareholders’ equity            Non-controlling interest in subsidiaries Total shareholders’ equity
Common Stock Additional
paid-in capital
 Accumulated deficit Treasury Stock Common Stock Additional
paid-in capital
 Accumulated deficit Treasury Stock 
Shares Amount Shares
 Amount
 Total shareholders’ equity attributable to Matador Resources CompanyNon-controlling interest in subsidiariesShares Amount Shares
 Amount
 Total shareholders’ equity attributable to Matador Resources CompanyNon-controlling interest in subsidiaries
Balance at January 1, 2018108,514
 $1,085
 $1,666,024
 $(510,484) 3
 $(69) $1,156,556
$100,990
$1,257,546
Balance at January 1, 2019116,375
 $1,164
 $1,924,408
 $(236,277) 21
 $(415) $1,688,880
$90,777
$1,779,657
Issuance of common stock pursuant to employee stock compensation plan736
 7
 (7) 
 
 
 

 
6
 
 
 
 
 
 

 
Issuance of common stock7,000
 70
 226,542
 
 
 
 226,612

 226,612
Cost to issue equity
 
 (146) 
 
 
 (146)
 (146)
Issuance of common stock pursuant to directors’ and advisors’ compensation plan79
 1
 (1) 
 
 
 
 
 
3
 
 
 
 
 
 
 
 
Stock-based compensation expense related to equity-based awards including amounts capitalized
 
 17,174
 
 
 
 17,174
 
 17,174

 
 5,802
 
 
 
 5,802
 
 5,802
Stock options exercised, net of options forfeited in net share settlements178
 2
 (1,256) 
 
 
 (1,254) 
 (1,254)210
 2
 3,109
 
 
 
 3,111
 
 3,111
Restricted stock forfeited
 
 
 
 155
 (3,970) (3,970) 
 (3,970)
 
 
 
 184
 (3,170) (3,170) 
 (3,170)
Contributions related to formation of Joint Venture (see Note 6)
 
 14,700
 
 
 
 14,700
 
 14,700
Contribution related to formation of San Mateo I, net of tax of $3.1 million (see Note 7)
 
 11,613
 
 
 
 11,613
 
 11,613
Contribution of property related to formation of San Mateo II (see Note 7)
 
 (506) 
 
 
 (506) 506
 
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries
 
 2,040
 
 
 
 2,040
 10,291
 12,331
Distributions to non-controlling interest owners of less-than-wholly-owned subsidiaries

 
 
 
 
 
 
 (8,330) (8,330)
Current period net (loss) income
 
 
 (16,947) 
 
 (16,947) 7,462
 (9,485)
Balance at March 31, 2019116,594
 1,166
 1,946,466
 (253,224) 205
 (3,585) 1,690,823
 100,706
 1,791,529
Issuance of common stock pursuant to employee stock compensation plan220
 2
 (2) 
 
 
 
 
 
Issuance of common stock pursuant to directors’ and advisors’ compensation plan42
 1
 (1) 
 
 
 
 
 
Stock-based compensation expense related to equity-based awards including amounts capitalized
 
 5,762
 
 
 
 5,762
 
 5,762
Stock options exercised, net of options forfeited in net share settlements10
 
 189
 
 
 
 189
 
 189
Restricted stock forfeited
 
 
 
 13
 (139) (139) 
 (139)
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries
 
 
 
 
 
 
 73,500
 73,500

 
 3,090
 
 
 
 3,090
 4,410
 7,500
Distributions to non-controlling interest owners of less-than-wholly-owned subsidiaries

 
 
 
 
 
 
 (17,395) (17,395)
 
 
 
 
 
 
 (9,310) (9,310)
Current period net income
 
 
 137,494
 
 
 137,494
 18,182
 155,676

 
 
 36,752
 
 
 36,752
 8,320
 45,072
Balance at September 30, 2018116,507
 $1,165
 $1,923,030
 $(372,990) 158
 $(4,039) $1,547,166
 $175,277
 $1,722,443
Balance at June 30, 2019116,866
 $1,169
 $1,955,504
 $(216,472) 218
 $(3,724) $1,736,477
 $104,126
 $1,840,603

Matador Resources Company and Subsidiaries
CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS’ EQUITY — UNAUDITED
(in thousands)
For the Three and Six Months Ended June 30, 2018
             Total shareholders’ equity attributable to Matador Resources Company    
                 
                 
              Non-controlling interest in subsidiaries Total shareholders’ equity
 Common Stock Additional
paid-in capital
 Accumulated deficit Treasury Stock   
 Shares Amount   Shares
 Amount
   
Balance at January 1, 2018108,514
 $1,085
 $1,666,024
 $(510,484) 3
 $(69) $1,156,556
 $100,990
 $1,257,546
Issuance of common stock pursuant to employee stock compensation plan697
 7
 (7) 
 
 
 
 
 
Issuance of common stock pursuant to directors’ and advisors’ compensation plan6
 1
 (1) 
 
 
 
 
 
Stock-based compensation expense related to equity-based awards including amounts capitalized
 
 5,390
 
 
 
 5,390
 
 5,390
Stock options exercised, net of options forfeited in net share settlements130
 1
 (1,918) 
 
 
 (1,917) 
 (1,917)
Restricted stock forfeited
 
 
 
 82
 (2,377) (2,377) 
 (2,377)
Contributions related to formation of San Mateo I (see Note 7)
 
 14,700
 
 
 
 14,700
 
 14,700
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries
 
 
 
 
 
 
 29,400
 29,400
Distributions to non-controlling interest owners of less-than-wholly-owned subsidiaries

 
 
 
 
 
 
 (4,900) (4,900)
Current period net income
 
 
 59,894
 
 
 59,894
 5,030
 64,924
Balance at March 31, 2018109,347
 1,094
 1,684,188
 (450,590) 85
 (2,446) 1,232,246
 130,520
 1,362,766
Issuance of common stock pursuant to employee stock compensation plan20
 
 
 
 
 
 
 
 
Issuance of common stock7,000
 70
 226,542
 
 
 
 226,612
 
 226,612
Cost to issue equity
 
 (146) 
 
 
 (146) 
 (146)
Issuance of common stock pursuant to directors’ and advisors’ compensation plan70
 
 
 
 
 
 
 
 
Stock-based compensation expense related to equity-based awards including amounts capitalized
 
 5,937
 
 
 
 5,937
 
 5,937
Stock options exercised, net of options forfeited in net share settlements24
 1
 300
 
 
 
 301
 
 301
Restricted stock forfeited
 
 
 
 18
 (224) (224) 
 (224)
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries
 
 
 
 
 
 
 24,500
 24,500
Distributions to non-controlling interest owners of less-than-wholly-owned subsidiaries

 
 
 
 
 
 
 (5,635) (5,635)
Current period net income
 
 
 59,806
 
 
 59,806
 5,831
 65,637
Balance at June 30, 2018116,461
 $1,165
 $1,916,821
 $(390,784) 103
 $(2,670) $1,524,532
 $155,216
 $1,679,748


Matador Resources Company and Subsidiaries
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS — UNAUDITED
(In thousands)
Nine Months Ended 
 September 30,
Six Months Ended 
 June 30,
2018 20172019 2018
Operating activities      
Net income$155,676
 $95,566
$35,587
 $130,561
Adjustments to reconcile net income to net cash provided by operating activities      
Unrealized loss (gain) on derivatives9,492
 (21,449)39,562
 (11,845)
Depletion, depreciation and amortization192,664
 123,066
156,999
 122,207
Accretion of asset retirement obligations1,126
 937
834
 739
Stock-based compensation expense13,787
 12,488
9,076
 8,945
Prepayment premium on extinguishment of debt31,226
 
Deferred income tax provision11,845
 
Amortization of debt issuance cost851
 103
1,189
 411
Net loss (gain) on asset sales and inventory impairment196
 (23)
Inventory impairment368
 
Changes in operating assets and liabilities
 

 
Accounts receivable(5,654) (50,343)(378) (9,321)
Lease and well equipment inventory(15,347) (1,666)(3,456) (8,611)
Prepaid expenses(502) (2,224)(4,834) (2,167)
Other assets
 217
(415) (149)
Accounts payable, accrued liabilities and other current liabilities20,823
 35,068
(48,746) (883)
Royalties payable5,665
 29,651
1,353
 8,393
Advances from joint interest owners9,565
 2,646
(6,243) 16,025
Other long-term liabilities(250) (1,521)1,756
 (97)
Net cash provided by operating activities419,318
 222,516
194,497
 254,208
Investing activities

 



 

Oil and natural gas properties capital expenditures(1,106,556) (517,270)(349,915) (421,595)
Expenditures for midstream and other property and equipment(122,239) (80,560)
Midstream capital expenditures(64,106) (78,302)
Expenditures for other property and equipment(2,206) (1,258)
Proceeds from sale of assets8,267
 977
21,533
 7,593
Net cash used in investing activities(1,220,528) (596,853)(394,694) (493,562)
Financing activities

 



 

Repayments of borrowings(45,000) 

 (45,000)
Borrowings under Credit Agreement370,000
 
165,000
 45,000
Proceeds from issuance of senior unsecured notes750,000
 
Cost to issue senior unsecured notes(9,531) 
Purchase of senior unsecured notes(605,780) 
Borrowings under San Mateo Credit Facility20,000
 
Cost to amend credit facilities(415) 
Proceeds from issuance of common stock226,612
 

 226,612
Cost to issue equity(146) 

 (73)
Proceeds from stock options exercised827
 2,920
3,298
 464
Contributions related to formation of Joint Venture14,700
 171,500
Contributions related to formation of San Mateo I14,700
 14,700
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries73,500
 29,400
19,831
 53,900
Distributions to non-controlling interest owners of less-than-wholly-owned subsidiaries(17,395) (5,635)(17,640) (10,535)
Taxes paid related to net share settlement of stock-based compensation(6,051) (4,415)(3,309) (4,683)
Purchase of non-controlling interest of less-than-wholly-owned subsidiary
 (2,653)
Cash paid under financing lease obligations(490) 
Net cash provided by financing activities751,736
 191,117
200,975
 280,385
Decrease in cash and restricted cash(49,474) (183,220)
Increase in cash and restricted cash778
 41,031
Cash and restricted cash at beginning of period102,482
 214,142
83,984
 102,482
Cash and restricted cash at end of period$53,008
 $30,922
$84,762
 $143,513
      
Supplemental disclosures of cash flow information (Note 10)

 

Supplemental disclosures of cash flow information (Note 11)

 


The accompanying notes are an integral part of these financial statements.
7



Table of Contents
Matador Resources Company and Subsidiaries
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS —
UNAUDITED
NOTE 1 — NATURE OF OPERATIONS
Matador Resources Company, a Texas corporation (“Matador” and, collectively with its subsidiaries, the “Company”), is an independent energy company engaged in the exploration, development, production and acquisition of oil and natural gas resources in the United States, with an emphasis on oil and natural gas shale and other unconventional plays. The Company’s current operations are focused primarily on the oil and liquids-rich portion of the Wolfcamp and Bone Spring plays in the Delaware Basin in Southeast New Mexico and West Texas. The Company also operates in the Eagle Ford shale play in South Texas and the Haynesville shale and Cotton Valley plays in Northwest Louisiana and East Texas. Additionally, the Company conducts midstream operations, primarily through its midstream joint venture,ventures, San Mateo Midstream, LLC (“San Mateo I”) and San Mateo Midstream II, LLC (“San Mateo II” and, together with San Mateo I, “San Mateo” or the “Joint Venture”), in support of the Company’s exploration, development and production operations and provides natural gas processing, oil transportation services, oil, natural gas and salt water gathering services and salt water disposal services to third parties.
NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Interim Financial Statements, Basis of Presentation, Consolidation and Significant Estimates
The interim unaudited condensed consolidated financial statements of the Company have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) but do not include all of the information and footnotes required by generally accepted accounting principles in the United States of America (“U.S. GAAP”) for complete financial statements and should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 20172018 filed with the SEC on March 1, 2019 (the “Annual Report”) filed with the SEC.. The Company consolidates certain subsidiaries and joint ventures that are less than wholly-owned and are not involved in oil and natural gas exploration, including San Mateo, and the net income and equity attributable to the non-controlling interest in these subsidiaries have been reported separately as required by Accounting Standards Codification (“ASC”), Consolidation (Topic 810). The Company proportionately consolidates certain joint ventures that are less than wholly-owned and are involved in oil and natural gas exploration. All intercompany accounts and transactions have been eliminated in consolidation. In management’s opinion, these interim unaudited condensed consolidated financial statements include all normal, recurring adjustments that are necessary for a fair presentation of the Company’s interim unaudited condensed consolidated financial statements as of SeptemberJune 30, 2018.2019. Amounts as of December 31, 20172018 are derived from the Company’s audited consolidated financial statements included in the Annual Report. Certain reclassifications have been made to the December 31, 2018 financial statement amounts in order to conform them to the June 30, 2019 presentations.
The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. These estimates and assumptions may also affect disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company’s interim unaudited condensed consolidated financial statements are based on a number of significant estimates, including accruals for oil and natural gas revenues, accrued assets and liabilities, primarily related to oil and natural gas and midstream operations, stock-based compensation, valuation of derivative instruments, deferred tax assets and liabilities and oil and natural gas reserves. The estimates of oil and natural gas reserves quantities and future net cash flows are the basis for the calculations of depletion and impairment of oil and natural gas properties, as well as estimates of asset retirement obligations and certain tax accruals. While the Company believes its estimates are reasonable, changes in facts and assumptions or the discovery of new information may result in revised estimates. Actual results could differ from these estimates.
Change in Accounting Principles
Leases.During the first quarter of 2018,2019, the Company adopted Accounting Standards Update 2014-09, Revenue from Contracts with Customers(“ASU”) 2016-02, Leases (Topic 606) (“ASC 606”)842) and the amendments provided for in ASU 2018-11, Leases (Topic 842),which specifies howrequire the recognition of lease assets and when to recognize revenue. This standard requires expanded disclosures surrounding revenue recognition and is intended to improve, and converge with international standards, the financial reporting requirementslease liabilities by lessees for revenue from contracts with customers. The Company adopted the new guidancethose leases classified as operating leases under previous U.S. GAAP using thea modified retrospective approach. The adoption did not require an adjustmentmodified retrospective approach includes a number of optional practical expedients that the Company chose to opening accumulated deficitapply. These practical expedients relate to (i) the identification and classification of leases that commenced before the effective date, (ii) the treatment of initial direct costs for any cumulative effect adjustmentleases that commenced before the effective date, (iii) the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset and did not have a material impact on(iv) the Company’s consolidated balance sheets, statements of operations, statement of shareholders’ equity or statements of cash flows.  
Priorability to initially apply the new lease standard at the adoption date. During the first quarter of ASC 606,2019, the Company recorded oilalso adopted ASU 2018-01, Leases (Topic 842), which is a land easement practical expedient, and, natural gas revenues atas a result, the time of physical transfer of such productsCompany began evaluating land easements that are entered into or modified after December 31, 2018. See Note 3 for additional disclosures related to the purchaser. The Company followed the sales method of accounting for oil and natural gas sales, recognizing revenues based on the Company’s actual proceeds from the oil and natural gas sold to purchasers.leases.
The Company enters into contracts with customers to sell its oil and natural gas production. With the adoption of ASC 606, revenue from these contracts is recognized in accordance with the five-step revenue recognition model prescribed in


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NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — Continued


ASC 606. Specifically, revenue is recognized when the Company’s performance obligations underThe adoption of these contracts are satisfied, which generally occurs with the transfer of control of the oil and natural gas to the purchaser. Control is generally considered transferred when the following criteria are met: (i) transfer of physical custody, (ii) transfer of title, (iii) transfer of risk of loss and (iv) relinquishment of any repurchase rights or other similar rights. Given the nature of the products sold, revenue is recognized at a pointASUs resulted in time based on the amount of consideration the Company expects to receive in accordance with the price specifiedrecording in the contract. Consideration under the oil and natural gas marketing contracts is typically received from the purchaser one to two months after production.
The majoritycondensed consolidated balance sheet beginning January 1, 2019 certain of the Company’s oil marketing contracts transfer physical custodycompressor leases, drilling rig leases and title at or nearoffice leases, which were previously considered operating leases and not reported on the wellhead,Company’s condensed consolidated balance sheets. As such, upon adoption, the Company recorded (i) long-term right of use assets of $62.3 million, which is generally when control of the oil has been transferred to the purchaser. The majority of the oil produced is sold under contracts using market-based pricing, which price is then adjusted for differentials based upon delivery location and oil quality. To the extent the differentials are incurred at or after the transfer of control of the oil, the differentials are included in oil sales on the statements“Other assets” and “Other property and equipment,” and (ii) net right of operations as they represent partuse liabilities of the transaction price of the contract. If the differentials, or other related costs, are incurred prior to the transfer of control of the oil, those costs$62.3 million, which are included in production taxes, transportation“Other current liabilities” and processing expenses“Other long-term liabilities.” There was no cumulative-effect adjustment to the opening balance of accumulated deficit as a result of the adoption of these ASUs.
Stock Compensation. During the first quarter of 2019, the Company also adopted ASU 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting,which extends the scope of Topic 718 to include share-based payment transactions related to the acquisition of goods and services from nonemployees. Previously, the Company accounted for stock-based awards to special advisors and contractors under ASC 505-50 as liability instruments, and the fair value of the awards was recalculated each reporting period. Upon adoption, all such awards are now measured at fair value on the Company’s consolidated statements of operations, as they represent payment for services performed outside ofgrant date and the contract with the customer.
The Company’s natural gas is sold at the lease location, at the inlet or outlet of a natural gas plant or at an interconnect near a marketing hub following transportation from a processing plant. The majority of the Company’s natural gas is sold under fee-based contracts. When the natural gas is sold at the lease, the purchaser gathers the natural gas and transports the natural gas via pipeline to natural gas processing plants where, if necessary, natural gas liquid (“NGL”) products are extracted. The NGL products and remaining residue gas are then sold by the purchaser, or if the Company elects to repurchase the natural gas, the Company sells the natural gas to a third party. Under the fee-based contracts, the Company receives NGL and residue gas value, less the fee component, or is invoiced the fee component. To the extent control of the natural gas transfers upstream of the transportation and processing activities, revenue is recognized as the net amount received from the purchaser. To the extent that control transfers downstream of those services, revenueresulting expense is recognized on a grossstraight-line basis andover the related costsawards’ vesting periods. The transitional guidance requires entities to remeasure all unvested awards that are includedbeing accounted for under ASC 505-50 as liability instruments as of the beginning of the year in production taxes, transportation and processing expenseswhich this ASU is adopted. Adoption of this ASU did not have a material impact on the Company’s condensed consolidated statements of operations.financial statements.
Revenues
The Company recognizes midstream services revenues atfollowing table summarizes the time services have been rendered and the price is fixed and determinable. Third-party midstream services revenues are those revenues from midstream operations related to third parties, including working interest owners in the Company’s operated wells. All midstream services revenues related to the Company’s working interest are eliminated in consolidation. Since the Company has a right to payment from its customers in amounts that correspond directly to the value that the customer receives from the performance completed on each contract, the Company applies the practical expedient in ASC 606 that allows recognition of revenue in the amount for which there is a right to invoice the customer without estimating a transaction price for each contract and allocating that transaction price to the performance obligations within each contract.
The Company determined the impact on its consolidated financial statements as a result of adoption of ASC 606 was a $2.8 million and $7.6 million decrease in oil and natural gas revenues and a $2.8 million and $7.6 million decrease in production taxes, transportation and processing expenses for the three and nine months ended September 30, 2018, respectively, which was not material. As a result of adoption of this standard, the Company is now required to disclose the following information regarding total revenues and revenues from contracts with customers on a disaggregated basis for the three and ninesix months ended SeptemberJune 30, 2019 and 2018 (in thousands).

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NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — Continued

Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
Three Months Ended 
 September 30, 2018
Nine Months Ended 
 September 30, 2018
2019 2018 2019 2018
Revenues from contracts with customers$223,091
$620,539
$234,382
 $212,426
 $450,720
 $397,448
Realized gain (loss) on derivatives5,424
(1,322)1,165
 (2,488) 4,435
 (6,746)
Unrealized loss on derivatives(21,337)(9,492)
Unrealized gain (loss) on derivatives6,157
 1,429
 (39,562) 11,845
Total revenues$207,178
$609,725
$241,704
 $211,367
 $415,593
 $402,547
 Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
 2019 2018 2019 2018
Oil revenues$189,085
 $166,271
 $343,288
 $314,430
Natural gas revenues21,975
 42,748
 61,041
 76,543
Third-party midstream services revenues14,359
 3,407
 26,197
 6,475
Sales of purchased natural gas8,963
 
 20,194
 
Total revenues from contracts with customers$234,382
 $212,426
 $450,720
 $397,448
 Three Months Ended 
 September 30, 2018
Nine Months Ended 
 September 30, 2018
Oil revenues$169,913
$484,343
Natural gas revenues46,369
122,912
Third-party midstream services revenues6,809
13,284
Total revenues from contracts with customers$223,091
$620,539

The Company does not disclose the value of unsatisfied performance obligations under its contracts with customers as it applies the practical expedient in accordance with ASC 606. The expedient, as described in ASC 606-10-50-14(a), applies to variable consideration that is recognized as control of the product is transferred to the customer. Since each unit of product represents a separate performance obligation, future volumes are wholly unsatisfied and disclosure of the transaction price allocated to remaining performance obligations is not required.
During the first quarter of 2018, the Company adopted Accounting Standards Update (“ASU”) 2016-18, Statement of Cash Flows (Topic 230), which specifies that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. The Company adopted ASU 2016-18 effective January 1, 2018 and determined that the adoption of this ASU changed the presentation of its beginning and ending cash balances and eliminated the presentation of changes in restricted cash balances from investing activities in its consolidated statements of cash flows. The Company adopted the new guidance using the retrospective transition method; as a result, approximately $6.0 million and $1.3 million of restricted cash was added to the beginning cash balance for the nine months ended September 30, 2018 and 2017, respectively.
During the first quarter of 2018, the Company adopted ASU 2017-01, Business Combinations (Topic 805), which specifies the minimum inputs and processes required for an integrated set of assets and activities to meet the definition of a business. The Company adopted ASU 2017-01 prospectively, which did not have a material impact on its consolidated financial statements.
Property and Equipment
The Company uses the full-cost method of accounting for its investments in oil and natural gas properties. Under this method, the Company is required to perform a ceiling test each quarter that determines a limit, or ceiling, on the capitalized costs of oil and natural gas properties based primarily on the after-tax estimated future net cash flows from oil and natural gas properties using a 10% discount rate and the arithmetic average of first-day-of-the-month oil and natural gas prices for the prior 12-month period. For both the three and ninesix months ended SeptemberJune 30, 20182019 and 2017,2018, the cost center ceiling was higher than the capitalized costs of oil and natural gas properties, and, as a result, no impairment charge was necessary.
The Company capitalized approximately $8.5$8.4 million and $6.1$6.8 million of its general and administrative costs for the three months ended September 30, 2018 and 2017, respectively, and approximately $1.7$2.6 million and $2.1$2.6 million of its interest expense for the three months ended SeptemberJune 30, 20182019 and 2017,2018, respectively. The Company capitalized approximately $22.6$16.8 million and $16.9$14.1 million of its general and administrative costs for the nine months ended September 30, 2018 and 2017, respectively, and approximately $6.2$4.2 million and $5.2$4.5 million of its interest expense for the ninesix months ended SeptemberJune 30, 20182019 and 2017,2018, respectively.
On September 12, 2018, the Company announced the successful acquisition of 8,400 gross (8,400 net) leasehold acres in Lea and Eddy Counties, New Mexico for approximately $387 million in the Bureau of Land Management New Mexico Oil and Gas Lease Sale on September 5 and 6, 2018 (the “BLM Acquisition”).


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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS —
UNAUDITED — CONTINUED


NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — Continued


Earnings (Loss) Per Common Share
The Company reports basic earnings attributable to Matador Resources Company shareholders per common share, which excludes the effect of potentially dilutive securities, and diluted earnings attributable to Matador Resources Company shareholders per common share, which includes the effect of all potentially dilutive securities unless their impact is anti-dilutive.
The following table sets forth the computation of diluted weighted average common shares outstanding for the three and ninesix months ended SeptemberJune 30, 20182019 and 20172018 (in thousands).
 Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
2019 2018 2019 2018
Weighted average common shares outstanding       
Basic116,571
 112,706
 116,469
 110,809
Dilutive effect of options and restricted stock units332
 350
 370
 471
Diluted weighted average common shares outstanding116,903
 113,056
 116,839
 111,280

 Three Months Ended 
 September 30,
 Nine Months Ended 
 September 30,
2018 2017 2018 2017
Weighted average common shares outstanding       
Basic116,358
 100,365
 112,659
 100,141
Dilutive effect of options and restricted stock units554
 139
 549
 439
Diluted weighted average common shares outstanding116,912
 100,504
 113,208
 100,580
Recent Accounting Pronouncements
Leases. In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-02, Leases (Topic 842),which requires the recognitionA total of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous U.S. GAAP. This ASU will become effective for fiscal years beginning after December 15, 2018 with early adoption permitted. Entities are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date and the ability to use hindsight in evaluating lessee2.8 million options to extend or terminate a lease or to purchase shares of Matador’s common stock were excluded from the underlying asset. In January 2018,diluted weighted average common shares outstanding for both the FASB issued ASU 2018-01, Leases (Topic 842), which is a land easement practical expedient. The Company plans to use this practical expedient,three and as a result, the Company will evaluate new or modified land easements under this ASU beginning at the date of adoption. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842), which is a targeted improvement for comparative reporting requirements for initial adoption of ASU 2016-02. The Company plans to use the optional transition method to adopt ASU 2016-02, and the amendments provided for in ASU 2018-11 will allow the Company to initially apply the new lease standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Adoption of ASU 2016-02 will result in increased reported assets and liabilities. The quantitative impact of the new lease standard will depend on the leases in force at the time of adoption. The Company is currently evaluating the impact of the adoption of these ASUs on its consolidated financial statements, including identifying all leases, as defined under the new lease standard, and quantifying the impact of the new lease standard on existing leases. The Company expects to adopt these ASUs as of January 1, 2019.six months ended June 30, 2019 because their effects were anti-dilutive.
Stock Compensation.In June 2018, the FASB issued ASU 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting. This ASU extends the scope of Topic 718 to include share-based payment transactions related to the acquisition of goods and services from nonemployees. Currently, the Company accounts for stock-based awards to special advisors and contractors under ASC 505-50 as liability instruments, and the fair value of the awards is recalculated each reporting period. Upon adoption, all such awards will be measured at fair value on the grant date and the resulting expense will be recognized on a straight-line basis over the awards’ vesting period. This ASU is effective for fiscal years beginning after December 15, 2018 with early adoption permitted. The transitional guidance requires entities to remeasure all unvested awards that are being accounted for under ASC 505-50 as liability instruments as of the beginning of the year in which this ASU is adopted. The Company expects to adopt this ASU as of January 1, 2019 and does not anticipate this ASU will have a material impact on the Company’s consolidated financial statements.


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Matador Resources Company and Subsidiaries
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS —
UNAUDITED — CONTINUED


NOTE 3 — LEASES

The Company determines if an arrangement is a lease at inception of the contract. If an arrangement is a lease, the present value of the related lease payments is recorded as a liability and an equal amount is capitalized as a right of use asset on the Company’s interim unaudited condensed consolidated balance sheet. Right of use assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The Company’s estimated incremental borrowing rate, determined at the lease commencement date using the Company’s average secured borrowing rate, is used to calculate present value. The weighted average estimated incremental borrowing rate used for the three months ended June 30, 2019 was 3.73%. For these purposes, the lease term includes options to extend the lease when it is reasonably certain that the Company will exercise such option. Leases with terms of 12 months or less at inception are not recorded on the interim unaudited condensed consolidated balance sheet unless there is a significant cost to terminate the lease, including the cost of removal of the leased asset. As the Company is the responsible party under these arrangements, the Company records the resulting assets and liabilities on a gross basis in its interim unaudited condensed consolidated balance sheets.
The following table presents supplemental interim unaudited condensed consolidated statement of operations information related to lease expenses, on a gross basis, for the three and six months ended June 30, 2019 (in thousands). Lease payments represent gross payments to vendors, which, for certain of our operating assets, are partially offset by amounts received from other working interest owners in our operated wells.
 Three Months Ended 
 June 30, 2019
 Six Months Ended 
 June 30, 2019
Operating leases   
Lease operating$2,965
 $5,207
Plant and other midstream services30
 61
General and administrative665
 1,474
Total operating leases(1)
3,660
 6,742
Short-term leases   
Lease operating3,392
 5,601
Plant and other midstream services1,131
 2,751
General and administrative5
 17
Total short-term leases(2)(3)
4,528
 8,369
Financing leases   
Depreciation of assets231
 440
Interest on lease liabilities33
 64
Total financing leases264
 504
Total lease expense$8,452
 $15,615
_____________________
(1)Does not include gross payments related to drilling rig leases of $8.2 million and $13.5 million for the three and six months ended June 30, 2019, respectively, that were capitalized and recorded in “Oil and natural gas properties, full-cost method” in the interim unaudited condensed consolidated balance sheet at June 30, 2019.
(2)These costs are related to leases that are not recorded as right of use assets or lease liabilities in the interim unaudited condensed consolidated balance sheet as they are short-term leases.
(3)Does not include gross payments related to short-term drilling rig leases and other equipment rentals of $10.7 million and $37.2 million for the three and six months ended June 30, 2019, respectively, that were capitalized and recorded in “Oil and natural gas properties, full-cost method” in the interim unaudited condensed consolidated balance sheet at June 30, 2019.

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Matador Resources Company and Subsidiaries
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS —
UNAUDITED — CONTINUED


NOTE 3 — LEASES — Continued


The following table presents supplemental interim unaudited condensed consolidated balance sheet information related to leases as of June 30, 2019 (in thousands).
  June 30, 2019
Operating leases  
Other assets $78,845
Other current liabilities $(40,870)
Other long-term liabilities (43,012)
Total operating lease liabilities $(83,882)
  
Financing leases  
Other property and equipment, at cost $2,846
Accumulated depreciation (865)
Net property and equipment $1,981
Other current liabilities $(1,108)
Other long-term liabilities (1,146)
Total financing lease liabilities $(2,254)


The following table presents supplemental interim unaudited condensed consolidated cash flow information related to lease payments for the six months ended June 30, 2019 (in thousands).
  Six Months Ended 
 June 30, 2019
Cash paid related to lease liabilities  
Operating cash payments for operating leases $6,790
Investing cash payments for operating leases $13,509
Financing cash payments for financing leases $490
  
Right of use assets obtained in exchange for lease obligations entered into during the period  
Operating leases $28,884
Financing leases $471


The following table presents the maturities of lease liabilities at June 30, 2019 (in years).
Weighted-Average Remaining Lease TermJune 30, 2019
Operating leases3.0
Financing leases2.6


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Matador Resources Company and Subsidiaries
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS —
UNAUDITED — CONTINUED


NOTE 3 — LEASES — Continued

The following table presents a schedule of future minimum lease payments required under all lease agreements as of June 30, 2019 and December 31, 2018, respectively (in thousands).
  June 30, 2019
  Operating Leases Financing Leases
2019 $22,075
 $493
2020 32,051
 747
2021 19,981
 581
2022 3,989
 504
2023 3,234
 
Thereafter 7,679
 
Total lease payments 89,009
 2,325
Less imputed interest (5,127) (71)
Total lease obligations 83,882
 2,254
Less current obligations (40,870) (1,108)
Long-term lease obligations $43,012
 $1,146

  December 31, 2018
  Operating Leases Financing Leases
2019 $39,457
 $1,240
2020 12,009
 913
2021 3,513
 534
2022 3,209
 455
2023 3,234
 
Thereafter 7,680
 
Total lease payments 69,102
 3,142
Less imputed interest (4,300) (130)
Total lease obligations 64,802
 3,012
Less current obligations (39,457) (1,240)
Long-term lease obligations $25,345
 $1,772


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NOTE 34 — ASSET RETIREMENT OBLIGATIONS


The following table summarizes the changes in the Company’s asset retirement obligations for the ninesix months ended SeptemberJune 30, 20182019 (in thousands).
 
Beginning asset retirement obligations$26,256
$31,086
Liabilities incurred during period2,473
1,427
Liabilities settled during period(663)(154)
Revisions in estimated cash flows442
Divestitures during period(951)
Accretion expense1,126
834
Ending asset retirement obligations29,634
32,242
Less: current asset retirement obligations(1)
(928)(1,556)
Long-term asset retirement obligations$28,706
$30,686
 _______________
(1)Included in accrued liabilities in the Company’s interim unaudited condensed consolidated balance sheet at SeptemberJune 30, 2018.2019.
NOTE 45 — DEBT
At SeptemberJune 30, 2018, the Company had $750.0 million of outstanding 5.875% senior notes due 2026 (the “Original 2026 Notes”), $325.0 million in borrowings outstanding under the Company’s revolving credit agreement (the “Credit Agreement”)2019 and approximately $3.0 million in outstanding letters of credit issued pursuant to the Credit Agreement. At OctoberJuly 31, 2018,2019, the Company had $1.05 billion of outstanding Notes (as defined below)senior notes due 2026 (the “Notes”), $25.0$205.0 million in borrowings outstanding under the Credit Agreementits revolving credit facility (the “Credit Agreement”) and approximately $3.0$13.6 million in outstanding letters of credit issued pursuant to the Credit Agreement.
At June 30, 2019 and July 31, 2019, San Mateo I had $240.0 million in borrowings outstanding under its revolving credit facility (the “San Mateo Credit AgreementFacility”) and approximately $16.2 million in outstanding letters of credit issued pursuant to the San Mateo Credit Facility.
Credit Agreements
MRC Energy Company
The borrowing base under the Credit Agreement is determined semi-annually as of May 1 and November 1 by the lenders based primarily on the estimated value of the Company’s proved oil and natural gas reserves at December 31 and June 30 of each year, respectively. Both theThe Company and the lenders may each request an unscheduled redetermination of the borrowing base once each between scheduled redetermination dates. During the first quarter of 2018,In April 2019, the lenders completed their review of the Company’s proved oil and natural gas reserves at December 31, 2017,2018, and, as a result, in March 2018, the borrowing base was increased to $725.0$900.0 million. This March 2018 redetermination constituted the regularly scheduled May 1 redetermination. The Company elected to keep the borrowing commitment at $400.0$500.0 million, and the maximum facility amount remained at $500.0 million at September 30, 2018.
In October 2018, the lenders completed their review of the Company’s proved oil and natural gas reserves at June 30, 2018. In connection with such review, the Company amended the Credit Agreement to, among other items, increase the maximum facility amount to $1.5 billion, increase the borrowing base to $850.0 million, increase the elected borrowing commitment to $500.0 million, extend the maturity to October 31, 2023 and reduce borrowing rates by 0.25% per annum.billion. This October 2018April 2019 redetermination constituted the regularly scheduled NovemberMay 1 redetermination. Borrowings under the Credit Agreement are limited to the lowest of the borrowing base, the maximum facility amount and the elected borrowing commitment. The Credit Agreement matures on October 31, 2023.
The Company believes that it was in compliance with the terms of the Credit Agreement at September 30, 2018.
Senior Unsecured Notes
As of June 30, 2019.
San Mateo Midstream, LLC
On December 19, 2018, San Mateo I entered into the $250.0 million San Mateo Credit Facility, which matures December 19, 2023. The San Mateo Credit Facility includes an accordion feature, which could increase the lender commitments to up to $400.0 million. The San Mateo Credit Facility is non-recourse with respect to Matador and its wholly-owned subsidiaries, as well as San Mateo II, but is guaranteed by San Mateo I’s subsidiaries and secured by substantially all of San Mateo I’s assets, including real property. On June 12, 2019, pursuant to the accordion feature, the lender commitments under the San Mateo Credit Facility were increased to $325.0 million.
The Company had $575.0 million of outstanding 6.875% senior notes due 2023 (the “2023 Notes”). On August 21, 2018, the Company issued $750.0 million of Original 2026 Notesbelieves that San Mateo I was in a private placement (the “2026 Notes Offering”). The Original 2026 Notes were issued at par value with a coupon rate of 5.875%, and the Company received net proceeds of approximately $740.0 million, after deducting the initial purchasers’ discounts and offering expenses. In conjunctioncompliance with the 2026 Notes Offering, in August and September 2018, respectively, the Company completed a tender offer to purchase for cash and subsequent redemption of allterms of the Company’s $575.0 million aggregate principal amount of 2023 Notes (the “2023 Notes Tender Offer and Redemption”). The Company used a portion of the net proceeds from the 2026 Notes Offering to fund the 2023 Notes Tender Offer and Redemption. In connection with the 2023 Notes Tender Offer and Redemption, the Company incurred a loss of $31.2 million, including total payments of $30.4 million to holders of the 2023San Mateo Credit Facility at June 30, 2019.


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NOTE 45 — DEBT — Continued


Senior Unsecured Notes as a result of the tender premium
In August and the required 105.156% redemption price payable pursuant to the 2023 Notes indenture.
On October 4, 2018, the Company issued an additional$750.0 million and $300.0 million, respectively, of Notes, which have a 5.875% senior unsecured notes due 2026 (the “Additional 2026 Notes” and, collectively with the Original 2026 Notes, the “Notes”). The Additional 2026 Notes were issued pursuant to, and are governed by, the same indenture governing the Original 2026 Notes (the “Indenture”). The Additional 2026 Notes were issued at 100.5% of par, plus accrued interest from August 21, 2018. The Company received net proceeds from this offering of approximately $297.6 million, after deducting the initial purchasers’ discounts and estimated offering expenses but excluding accrued interest from August 21, 2018 paid by the initial purchasers of the Additional 2026 Notes. The proceeds from this offering were used to repay a portion of the outstanding borrowings under the Credit Agreement, which were incurred in connection with the BLM Acquisition.coupon rate. The Notes will mature September 15, 2026, and interest is payable on the Notes semi-annually in arrears on each March 15 and September 15. The Notes are guaranteed on a senior unsecured basis by certain subsidiaries of the Company (the “Guarantors”).
On or after September 15, 2021, the Company may redeem all or a part of the Notes at any time or from time to time at the following redemption prices (expressed as percentages of principal amount) plus accrued and unpaid interest, if any, to the applicable redemption date, if redeemed during the twelve-month period beginning on September 15 of the years indicated below:
Year Redemption Price
2021 104.406%
2022 102.938%
2023 101.469%
2024 and thereafter 100.000%

At any time prior to September 15, 2021, the Company may redeem up to 35% of the aggregate principal amount of the Notes with net proceeds from certain equity offerings at a redemption price of 105.875% of the principal amount thereof, plus accrued and unpaid interest, if any, to the redemption date, provided that (i) at least 65% in aggregate principal amount of the Notes (including any additional notes) originally issued remains outstanding immediately after the occurrence of such redemption (excluding Notes held by the Company and its subsidiaries) and (ii) each such redemption occurs within 180 days of the date of the closing of the related equity offering.
In addition, at any time prior to September 15, 2021, the Company may redeem all or part of the Notes at a redemption price equal to the sum of:
(i) the principal amount thereof, plus
(ii) the excess, if any, of (a) the present value at such time of (1) the redemption price of such Notes at September 15, 2021 plus (2) any required interest payments due on such Notes through September 15, 2021, discounted to the redemption date on a semi-annual basis using a discount rate equal to the Treasury Rate (as defined in the Indenture) plus 50 basis points, over (b) the principal amount of such Notes, plus
(iii) accrued and unpaid interest, if any, to the redemption date.
Subject to certain exceptions, the Indenture contains various covenants that limit the Company’s ability to take certain actions, including, but not limited to, the following:
incur additional indebtedness;
sell assets;
pay dividends or make certain investments;
create liens that secure indebtedness;
enter into transactions with affiliates; and
merge or consolidate with another company.

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NOTE 4 — DEBT — Continued

In the case of an event of default arising from certain events of bankruptcy or insolvency with respect to Matador, any Restricted Subsidiary (as defined in the Indenture) that is a Significant Subsidiary (as defined in the Indenture) or any group of Restricted Subsidiaries that, taken together, would constitute a Significant Subsidiary, all outstanding Notes will become due and payable immediately without further action or notice.  If any other event of default occurs and is continuing, the trustee or the holders of at least 25% in principal amount of the then outstanding Notes may declare all the Notes to be due and payable immediately. Events of default include, but are not limited to, the following events:
default for 30 days in the payment when due of interest on the Notes;
default in the payment when due of the principal of, or premium, if any, on the Notes;
failure by the Company to comply with its obligations to offer to purchase or purchase notes pursuant to the change of control or asset sale covenants of the Indenture or to comply with the covenant relating to mergers;
failure by the Company for 180 days after notice to comply with its reporting obligations under the Indenture;
failure by the Company for 60 days after notice to comply with any of the other agreements in the Indenture;
payment defaults and accelerations with respect to other indebtedness of the Company and its Restricted Subsidiaries in the aggregate principal amount of $50.0 million or more;
failure by the Company or any Restricted Subsidiary to pay certain final judgments aggregating in excess of $50.0 million within 60 days;
any subsidiary guarantee by a Guarantor ceases to be in full force and effect, is declared null and void in a judicial proceeding or is denied or disaffirmed by its maker; and
certain events of bankruptcy or insolvency with respect to the Company or any Restricted Subsidiary that is a Significant Subsidiary or any group of Restricted Subsidiaries that, taken together, would constitute a Significant Subsidiary.Company.
NOTE 56 — INCOME TAXES
The Company’s effective tax rate for the three and six months ended June 30, 2019 was 26% and 37%, respectively. The Company’s total income tax provision for the three and six months ended June 30, 2019 differed from amounts computed by applying the U.S. federal statutory tax rates to pre-tax income due primarily to the impact of permanent differences between book and tax income at June 30, 2019.
Due to a variety of factors, including the Company’s significant net income in 2017 and 2018, the Company’s federal valuation allowance and a portion of the Company’s state valuation allowance were reversed at December 31, 2018 as the deferred tax assets were determined to be more likely than not to be utilized. As a portion of the Company’s state net operating loss carryforwards are not expected to be utilized before expiration, a valuation allowance will continue to be recognized until the state deferred tax assets are more likely than not to be utilized.
The Company’s deferred tax assets exceeded its deferred tax liabilities at SeptemberJune 30, 2018 due to the deferred tax assets generated by full-cost ceiling impairment charges recorded in prior periods. The Company established a valuation allowance against most of the deferred tax assets beginning in the third quarter of 2015 and retained a full valuation allowance at SeptemberJune 30, 2018 due to uncertainties regarding the future realization of its deferred tax assets. The valuation allowance will continue
NOTE 7 — EQUITY
Stock-based Compensation
In February 2019, the Company granted awards to certain of its employees of 428,006 service-based restricted stock units to be recognized untilsettled in cash, which are liability instruments, and 428,006 performance-based stock units, which are equity instruments. The performance-based stock units vest in an amount between zero and 200% of the realizationtarget units granted based on the Company’s relative total shareholder return over the three-year period ending December 31, 2021, as compared to a designated peer group. The service-based restricted stock units vest ratably over three years, and the performance-based stock units are eligible to vest after completion of future deferred tax benefits is more likely than notthe three-year performance period. The fair value of these awards was approximately $16.8 million on the grant date. In April 2019, the Company granted awards to certain of its employees of 259,038 service-based restricted stock units to be utilized.settled in cash, which are liability instruments, and 205,361 shares of service-based restricted stock, which are equity instruments. Both the liability instruments and the equity instruments vest ratably over three years. The fair value of these awards was approximately $9.2 million on the grant date.

San Mateo II
On February 25, 2019, the Company announced the formation of San Mateo II, a strategic joint venture with a subsidiary of Five Point Energy LLC (“Five Point”) designed to expand the Company’s midstream operations in the Delaware Basin, specifically in Eddy County, New Mexico. San Mateo II is owned 51% by the Company and 49% by Five Point. In addition, Five Point has committed to pay $125 million of the first $150 million of capital expenditures incurred by San Mateo II to develop facilities in the Stebbins area and surrounding leaseholds in the southern portion of the Arrowhead asset area (the “Greater Stebbins Area”) and the Stateline asset area. The Company also has the ability to earn up to $150 million in deferred performance incentives over the next five years related to the formation of San Mateo II, plus additional performance incentives for securing volumes from third-party customers. During the first quarter of 2019, the Company contributed $1.0 million of property to San Mateo II. During the three and six months ended June 30, 2019, the Company contributed $1.5 million and $1.5 million of cash and Five Point contributed $7.5 million and $11.5 million of cash to San Mateo II, respectively.

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NOTE 67 — EQUITY — Continued

Equity Offering
On May 17, 2018, the Company completed a public offering of 7,000,000 shares of its common stock. After deducting offering costs totaling approximately $0.1 million, the Company received net proceeds of approximately $226.5 million. The proceeds from this offering were used to acquire additional leasehold and mineral acres in the Delaware Basin, to fund certain midstream initiatives in the Delaware Basin and for general corporate purposes, including to fund a portion of the Company’s capital expenditures. Pending such uses, the Company used a portion of the proceeds from the offering to repay the $45.0 million in borrowings then outstanding under the Credit Agreement and invested the remaining funds in short-term marketable securities.
Stock-based Compensation
In February 2018, the Company granted awards of 667,488 shares of restricted stock and options to purchase 563,408 shares of the Company’s common stock at an exercise price of $29.68 per share to certain of its employees. The fair value of these awards was approximately $26.9 million. All of these awards vest ratably over three years.


Performance Incentives
In connection with the formation of San Mateo I in 2017, the Company has the ability to earn a total of $73.5 million in performance incentives to be paid by its joint venture partner, a subsidiary of Five Point Energy LLC (“Five Point”), over a five-year period. The Company earned, and Five Point paid to the Company, $14.7 million in performance incentives during each of the ninesix months ended SeptemberJune 30, 2019 and 2018, and the Company may earn up to an additional $58.8$44.1 million in performance incentives over the next fourthree years. These performance incentives are recorded as an increase to additional paid-in capital when received. These performance incentives for the ninesix months ended SeptemberJune 30, 2019 and 2018 are also denoted as “Contributions related to formation of Joint Venture”San Mateo I” under “Financing activities” in the Company’s interim unaudited condensed consolidated statements of cash flows.flows and changes in shareholders’ equity.

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NOTE 78 — DERIVATIVE FINANCIAL INSTRUMENTS


At SeptemberJune 30, 2018,2019, the Company had various costless collar, three-way costless collar and swap contracts open and in place to mitigate its exposure to oil and natural gas price volatility, each with a specific term (calculation period), notional quantity (volume hedged) and price floor and ceiling and fixed price for the swaps. Each contract is set to expire at varying times during 20182019 and 2019.2020.
The following is a summary of the Company’s open costless collar contracts for oil and natural gas at SeptemberJune 30, 2018.2019.
CommodityCalculation Period Notional Quantity (Bbl or MMBtu) Weighted Average Price Floor ($/Bbl or
$/MMBtu)
 Weighted Average Price Ceiling ($/Bbl or
$/MMBtu)
 Fair Value of Asset (Liability) (thousands) Calculation Period Notional Quantity (Bbl or MMBtu) Weighted Average Price Floor ($/Bbl or
$/MMBtu)
 Weighted Average Price Ceiling ($/Bbl or
$/MMBtu)
 Fair Value of Asset (Liability) (thousands)
Oil - WTI(1)
10/01/2018 - 12/31/2018 720,000
 $44.27
 $60.29
 $(9,240)
Oil - WTI(1)
01/01/2019 - 12/31/2019 2,400,000
 $50.00
 $64.75
 (21,287)
Oil - LLS(2)
10/01/2018 - 12/31/2018 180,000
 $45.00
 $63.05
 (2,973)
Oil 07/01/2019 - 12/31/2019 3,900,000
 $50.26
 $70.94
 $3,354
Oil 01/01/2020 - 12/31/2020 2,640,000
 $48.50
 $69.50
 4,555
Natural Gas10/01/2018 - 12/31/2018 4,200,000
 $2.58
 $3.67
 (18) 07/01/2019 - 12/31/2019 1,200,000
 $2.50
 $3.80
 272
Total open costless collar contractsTotal open costless collar contracts       $(33,518)Total open costless collar contracts       $8,181
_____________________
(1) NYMEX West Texas Intermediate crude oil.
(2) Argus Louisiana Light Sweet crude oil.
The following is a summary of the Company’s open three-way costless collar contracts for oil and natural gas at SeptemberJune 30, 2018.2019. Open three-way costless collars consist of a long put (the floor), a short call (the ceiling) and a long call that limits losses on the upside.
CommodityCalculation Period Notional Quantity (Bbl) Weighted Average Price Floor ($/Bbl) Weighted Average Price, Short Call ($/Bbl) Weighted Average Price, Long Call ($/Bbl) Fair Value of Asset (Liability) (thousands)
Oil - WTI(1)
10/01/2018 - 12/31/2018 480,000
 $50.08
 $63.50
 $66.68
 $(1,369)
Total open three-way costless collar contracts       $(1,369)
_____________________
(1) NYMEX West Texas Intermediate crude oil.
Commodity Calculation Period Notional Quantity (Bbl or MMBtu) Weighted Average Price Floor ($/Bbl or $/MMBtu) Weighted Average Price, Short Call ($/Bbl or $/MMBtu) Weighted Average Price, Long Call ($/Bbl or $/MMBtu) Fair Value of Asset (Liability) (thousands)
Oil 07/01/2019 - 12/31/2019 660,000
 $60.00
 $75.00
 $78.85
 $2,829
Natural Gas 07/01/2019 - 12/31/2019 2,400,000
 $2.50
 $3.00
 $3.24
 528
Total open three-way costless collar contracts       $3,357
The following is a summary of the Company’s open basis swap contracts for oil at SeptemberJune 30, 2018.2019.
Commodity Calculation Period Notional Quantity (Bbl) 
Fixed Price
($/Bbl)
 
Fair Value of
Asset
(Liability)
(thousands)
Oil Basis Swaps 08/1/2019 - 12/31/2019 1,377,000
 $0.33
 $(39)
Oil Basis Swaps 01/01/2020 - 12/31/2020 4,494,000
 $0.42
 (1,215)
Total open swap contracts       $(1,254)
CommodityCalculation Period Notional Quantity (Bbl) 
Fixed Price
($/Bbl)
 
Fair Value of
Asset
(Liability)
(thousands)
Oil Basis Swaps10/01/2018 - 12/31/2018 1,305,000
 $(1.02) $10,155
Total open swap contracts      $10,155

At SeptemberJune 30, 2018,2019, the Company had an aggregate liabilityasset value for open derivative financial instruments of $24.7$10.3 million.

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NOTE 8 — DERIVATIVE FINANCIAL INSTRUMENTS — Continued

The Company’s derivative financial instruments are subject to master netting arrangements, and all but one counterpartythe Company’s counterparties allow for cross-commodity master netting provided the settlement dates for the commodities are the same. The Company does not present different types of commodities with the same counterparty on a net basis in its interim unaudited condensed consolidated balance sheets.


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NOTE 7 — DERIVATIVE FINANCIAL INSTRUMENTS — Continued

The following table presents the gross asset and liability fair values of the Company’s commodity price derivative financial instruments and the location of these balances in the interim unaudited condensed consolidated balance sheets as of SeptemberJune 30, 20182019 and December 31, 20172018 (in thousands).
Derivative Instruments Gross
amounts
recognized
 Gross amounts
netted in the condensed
consolidated
balance sheets
 Net amounts presented in the condensed
consolidated
balance sheets
June 30, 2019      
Current assets $12,671
 $(4,400) $8,271
Other assets 4,710
 (2,508) 2,202
Current liabilities (4,400) 4,400
 
Long-term liabilities (2,697) 2,508
 (189)
Total $10,284
 $
 $10,284
December 31, 2018      
Current assets $53,136
 $(3,207) $49,929
Current liabilities (3,207) 3,207
 
Long-term liabilities (83) 
 (83)
Total $49,846
 $
 $49,846
Derivative InstrumentsGross
amounts
recognized
 Gross amounts
netted in the condensed
consolidated
balance sheets
 Net amounts presented in the condensed
consolidated
balance sheets
September 30, 2018     
   Current assets$49,723
 $(49,719) $4
   Other assets654
 (654) 
   Current liabilities(69,459) 49,719
 (19,740)
   Long-term liabilities(5,650) 654
 (4,996)
      Total$(24,732) $
 $(24,732)
December 31, 2017     
   Current assets$131,092
 $(129,902) $1,190
   Current liabilities(146,331) 129,902
 (16,429)
      Total$(15,239) $
 $(15,239)

The following table summarizes the location and aggregate fair valuegain (loss) of all derivative financial instruments recorded in the interim unaudited condensed consolidated statements of operations for the periods presented (in thousands). These derivative financial instruments are not designated as hedging instruments.
    Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
Type of Instrument Location in Condensed Consolidated Statement of Operations 2019 2018 2019 2018
Derivative Instrument          
Oil Revenues: Realized gain (loss) on derivatives $1,165
 $(2,488) $4,531
 $(6,797)
Natural Gas Revenues: Realized (loss) gain on derivatives 
 
 (96) 51
Realized gain (loss) on derivatives 1,165
 (2,488) 4,435
 (6,746)
Oil Revenues: Unrealized gain (loss) on derivatives 5,365
 1,829
 (40,078) 12,956
Natural Gas Revenues: Unrealized gain (loss) on derivatives 792
 (400) 516
 (1,111)
Unrealized gain (loss) on derivatives 6,157
 1,429
 (39,562) 11,845
Total   $7,322
 $(1,059) $(35,127) $5,099

   Three Months Ended 
 September 30,
 Nine Months Ended 
 September 30,
Type of InstrumentLocation in Condensed Consolidated Statement of Operations 2018 2017 2018 2017
Derivative Instrument         
OilRevenues: Realized gain (loss) on derivatives $5,424
 $485
 $(1,373) $(568)
Natural GasRevenues: Realized gain (loss) on derivatives 
 
 51
 (608)
Realized gain (loss) on derivatives 5,424
 485
 (1,322) (1,176)
OilRevenues: Unrealized (loss) gain on derivatives (21,240) (12,479) (8,284) 15,949
Natural GasRevenues: Unrealized (loss) gain on derivatives (97) 115
 (1,208) 5,508
NGLRevenues: Unrealized loss on derivatives 
 (8) 
 (8)
Unrealized (loss) gain on derivatives (21,337) (12,372) (9,492) 21,449
Total  $(15,913) $(11,887) $(10,814) $20,273

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NOTE 89 — FAIR VALUE MEASUREMENTS



The Company measures and reports certain financial and non-financial assets and liabilities on a fair value basis. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). Fair value measurements are classified and disclosed in one of the following categories.
Level 1Unadjusted quoted prices for identical, unrestricted assets or liabilities in active markets.
Level 2Quoted prices in markets that are not active, or inputs whichthat are observable, either directly or indirectly, for substantially the full term of the asset or liability. This category includes those derivative instruments that are valued with industry standard models that consider various inputs, including: (i) quoted forward prices for commodities, (ii) time value of money and (iii) current market and contractual prices for the underlying instruments, as well as other relevant economic measures. Substantially all of these inputs are observable in the marketplace throughout the full term of the derivative instrument and can be derived from observable data or supported by observable levels at which transactions are executed in the marketplace.
Level 3Unobservable inputs that are not corroborated by market data that reflect a company’s own market assumptions.
Financial and non-financial assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement requires judgment, which may affect the valuation of the fair value of assets and liabilities and their placement within the fair value hierarchy levels.
The following tables summarize the valuation of the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis in accordance with the classifications provided above as of SeptemberJune 30, 20182019 and December 31, 20172018 (in thousands).
  Fair Value Measurements at
June 30, 2019 using
Description Level 1 Level 2 Level 3 Total
Assets (Liabilities)        
Oil derivatives and basis swaps $
 $9,484
 $
 $9,484
Natural gas derivatives 
 800
 
 800
Total $
 $10,284
 $
 $10,284
Fair Value Measurements at
September 30, 2018 using
 Fair Value Measurements at
December 31, 2018 using
DescriptionLevel 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total
Assets (Liabilities)               
Oil derivatives and basis swaps $
 $49,562
 $
 $49,562
Natural gas derivatives$
 $(18) $
 $(18) 
 284
 
 284
Oil derivatives and basis swaps
 (24,714) 
 (24,714)
Total$
 $(24,732) $
 $(24,732) $
 $49,846
 $
 $49,846
 Fair Value Measurements at
December 31, 2017 using
DescriptionLevel 1 Level 2 Level 3 Total
Assets (Liabilities)       
Natural gas derivatives$
 $1,190
 $
 $1,190
Oil derivatives and basis swaps
 (16,429) 
 (16,429)
           Total$
 $(15,239) $
 $(15,239)

Additional disclosures related to derivative financial instruments are provided in Note 7.8.
Other Fair Value Measurements
At SeptemberJune 30, 20182019 and December 31, 2017,2018, the carrying values reported on the interim unaudited condensed consolidated balance sheets for accounts receivable, prepaid expenses and other assets, accounts payable, accrued liabilities, royalties payable, amounts due to affiliates, advances from joint interest owners, amounts due to joint ventures and other current liabilities approximated their fair values due to their short-term maturities.
At SeptemberJune 30, 2018,2019, the carrying value of borrowings under the Credit Agreement and the San Mateo Credit Facility approximated itstheir fair value as it isboth are subject to short-term floating interest rates that reflect market rates available to the Company at the time and isare classified at Level 2.2 in the fair value hierarchy.

At June 30, 2019 and December 31, 2018, the fair value of the Notes was $1.07 billion and $0.97 billion, respectively, based on quoted market prices, which represent Level 1 inputs in the fair value hierarchy.

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NOTE 8 — FAIR VALUE MEASUREMENTS — Continued

At September 30, 2018 and December 31, 2017, the fair value of the Original 2026 Notes and the 2023 Notes was $761.3 million and $614.1 million, respectively, based on quoted market prices, which represent Level 1 inputs in the fair value hierarchy.
NOTE 910 — COMMITMENTS AND CONTINGENCIES

Processing, Transportation and Salt Water Disposal Commitments
Delaware Basin — Loving County, Texas Natural Gas ProcessingFirm Commitments    
In late 2015,From time to time, the Company enteredenters into a 15-year, fixed-fee natural gas gathering and processing agreementagreements with third parties whereby the Company committedcommits to deliver the anticipated natural gas and oil production and salt water from a significant portioncertain portions of its Loving County, Texas acreage for gathering, transportation, processing, fractionation, sales and, in West Texas through the counterparty’s gathering systemcase of salt water, disposal. The Company paid approximately $6.1 million and $5.1 million for processing atdeliveries under these agreements during the counterparty’s facilities. Under this agreement, ifthree months ended June 30, 2019 and 2018, respectively, and $12.9 million and $9.1 million for deliveries under these agreements during the six months ended June 30, 2019 and 2018, respectively. Certain of these agreements contain minimum volume commitments. If the Company does not meet the minimum volume commitment for transportation and processing at the facilities in a contract year,commitments under these agreements, it will be required to pay acertain deficiency fee per MMBtu of natural gas deficiency. At the end of each year of the agreement, the Company can elect to have the previous year’s actual transportation and processing volumes be the new minimum commitment for each of the remaining years of the contract. As such, the Company has the ability to unilaterally reduce the gathering and processing commitment if the Company’s production in the Loving County area is less than the Company’s minimum commitment.fees. If the Company ceased operations in this areathe areas subject to these agreements at SeptemberJune 30, 2018,2019, the total deficiency feedeficiencies required to be paid by the Company under these agreements would be approximately $12.5 million. In$163.4 million, in addition if the Company elects to reduce the gathering and processing commitment in any year, the Company has the ability to elect to increase the committed volumes in any future year to the originally agreed gathering and processing commitment. Any quantity in excess of the volume commitment delivered in a contract year can be carried over to the next contract year for purposes of calculating that year’s natural gas deficiency. The Company paid approximately $4.8 million and $4.0 million in natural gas processing and gathering fees under this agreement during the three months ended September 30, 2018 and 2017, respectively, and $12.2 million and $10.8 million in natural gas processing and gathering fees under this agreement during the nine months ended September 30, 2018 and 2017, respectively. The Company can elect to either sell the residue gas to the counterparty at the tailgate of its processing plants or have the counterparty deliver to the Company the residue gas in-kind to be sold to third parties downstream of the plants.commitments described below.
Delaware Basin — Eddy County, New Mexico Natural Gas TransportationFuture Commitments
In late 2017, the Company entered into an 18-year,a fixed-fee natural gas transportation agreement whereby the Company committed to deliver a portion of the residue natural gas production at the tailgate of San Mateo’s Black River cryogenic natural gas processing plant in the Rustler Breaks asset area (the “Black River Processing Plant”liquids (“NGL”) to transport through the counterparty’s pipeline. Under this agreement, if the Company does not meet the volume commitment for transportation in a contract year, the Company will owe the fees to transport the committed volume whether or not the committed volume is utilized. The minimum contractual obligation at September 30, 2018 was approximately $45.2 million. The Company paid approximately $1.0 million and $2.5 million in transportation fees under this agreement during the three and nine months ended September 30, 2018, respectively.
In late 2017, the Company also entered into a fixed-fee NGL transportation and fractionationsales agreement whereby the Company committed to deliver its NGL production at the tailgate of the Black River cryogenic natural gas processing plant in Eddy County, New Mexico (the “Black River Processing Plant.Plant”) to a certain counterparty. The Company is committed to deliver a minimum amount of NGLs to the counterparty upon construction and completion of a pipeline expansionextension and a fractionation facility by the counterparty, which is currently expected to be completed in late 2019.2020. The Company has no rights to compel the counterparty to construct this pipeline extension or fractionation facility. If the counterparty does not construct the pipeline extension and fractionation facility, then the Company does not have any minimum volume commitments under the agreement. If the counterparty constructs the pipeline extension and fractionation facility on or prior to February 28, 2021, then the Company will have a commitment to deliver a minimum amount of NGLs for seven years following the completion of the pipeline extension and fractionation facility. If the Company does not meet its NGL volume commitment in any quarter during the seven-year commitment period, it will be required to pay a deficiency fee per gallon of NGL deficiency. Should the pipeline extension and fractionation facility be completed on or prior to February 28, 2021, the minimum contractual obligation during the seven-year period would be approximately $132.3 million.
In April 2018, the Company entered into a short-term natural gas transportation agreement whereby the Company committed to deliver a portion of the residue natural gas production at the tailgate of the Black River Processing Plant to transport through the counterparty’s pipeline. Under this short-term agreement, the Company will owe the fees to transport the committed volume whether or not the committed volume is transported through the counterparty’s pipeline. The minimum contractual obligation under this short-term contract at September 30, 2018 was approximately $3.6 million. This short-term

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UNAUDITED — CONTINUED

NOTE 9 — COMMITMENTS AND CONTINGENCIES — Continued

agreement ends on September 30, 2019. The Company paid approximately $0.9 million and $1.1 million in transportation fees under this agreement during the three and nine months ended September 30, 2018, respectively.
In April 2018, the Company also entered into a 16-year, fixed-fee natural gas transportation agreement that begins on October 1, 2019, whereby the Company committed to deliver a portion of the residue natural gas production at the tailgate of the Black River Processing Plant to transport through the counterparty’s pipeline. The Company will owe the fees to transport the committed volume whether or not the committed volume is transported through the counterparty’s pipeline. The minimum contractual obligation at SeptemberJune 30, 20182019 was approximately $56.8 million.
In May 2018, the Company also entered into a 10-year, fixed-fee natural gas sales agreement whereby the Company committed to deliver residue natural gas through the counterparty’s pipeline to the Texas Gulf Coast beginning on the in-service date of such pipeline, which is expected to be operational in latethe fourth quarter of 2019. If the Company does not meet the volume commitment specified in the natural gas sales agreement, it may be required to pay a deficiency fee per MMBtu of natural gas deficiency. The minimum contractual obligation at SeptemberJune 30, 20182019 was approximately $200.6$202.3 million.
Delaware Basin — San Mateo
In February 2017, the Company dedicated its current and future leasehold interests in the Rustler Breaks and Wolf asset areas pursuant to 15-year, fixed-fee natural gas, oil and salt water gathering agreements and salt water disposal agreements with subsidiaries of San Mateo.Mateo I. In addition, the Company dedicated its current and future leasehold interests in the Rustler Breaks asset area pursuant to a 15-year, fixed-fee natural gas processing agreement (collectively with the gathering and salt water disposal agreements, the “Operational Agreements”). San Mateo I provides the Company with firm service under each of the Operational Agreements in exchange for certain minimum volume commitments. The minimum contractual obligation under the Operational Agreements at SeptemberJune 30, 20182019 was approximately $222.0$183.8 million.
BeginningIn connection with the February 2019 formation of San Mateo II, the Company dedicated to San Mateo II acreage in May 2017,the Greater Stebbins Area and the Stateline asset area pursuant to 15-year, fixed-fee agreements for oil, natural gas and salt water gathering, natural gas processing and salt water disposal (collectively, the “San Mateo II Operational Agreements”). San Mateo II will provide the Company with firm service under each of the San Mateo II Operational Agreements in exchange for certain minimum volume commitments. The minimum contractual obligation under the San Mateo II Operational Agreements at inception was approximately $363.8 million and begins in 2020.

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NOTE 10 — COMMITMENTS AND CONTINGENCIES — Continued

In June 2019, a subsidiary of San Mateo II entered into certain agreementsan agreement with third parties for the engineering, procurement, construction and installation of an expansion of the Black River Processing Plant.Plant, including required compression. The expansion was completed lateis expected to be placed in the first quarter of 2018. Since inception,service in 2020. San Mateo’sMateo II’s total commitments under these agreements totaled $55.3this agreement are $80.1 million. The subsidiary of San Mateo II paid approximately $2.0 million and $5.6$8.3 million under these agreementsthis agreement during the three and nine months ended SeptemberJune 30, 2018.2019. As of SeptemberJune 30, 2018, there was no remaining obligation under these agreements.
During the first quarter of 2018, a subsidiary of San Mateo entered into agreements for additional field compression and an amine gas treatment unit to maximize the operation of the Black River Processing Plant. Since inception, San Mateo’s commitments under these agreements totaled $24.8 million. The subsidiary of San Mateo paid approximately $6.3 million and $12.8 million under these agreements during the three and nine months ended September 30, 2018. As of September 30, 2018,2019, the remaining obligations under these agreementsthis agreement were $12.0$71.8 million, which are expected to be paid within the next year.
Other Commitments
The Company does not own or operate its own drilling rigs, but instead enters into contracts with third parties for such drilling rigs. These contracts establish daily rates for the drilling rigs and the term of the Company’s commitment for the drilling services to be provided. The Company would incur a termination obligation if the Company elected to terminate a contract and if the drilling contractor were unable to secure replacement work for the contracted drilling rigs at the same daily rates being charged to the Company prior to the end of their respective contract terms. The Company’s undiscounted minimum outstanding aggregate termination obligations under its drilling rig contracts were approximately $32.8 million at September 30, 2018.
At September 30, 2018, the Company had outstanding commitments to participate in the drilling and completion of various non-operated wells. If all of these wells are drilled and completed as proposed, the Company’s minimum outstanding aggregate commitments for its participation in these non-operated wells were approximately $44.2 million at September 30, 2018. The Company expects these costs to be incurred within the next year.12 months.
Legal Proceedings
The Company is a party to several lawsuitslegal proceedings encountered in the ordinary course of its business. While the ultimate outcome and impact on the Company cannot be predicted with certainty, in the opinion of management, it is remote that these lawsuitslegal proceedings will have a material adverse impact on the Company’s financial condition, results of operations or cash flows.

NOTE 11 — SUPPLEMENTAL DISCLOSURES
Accrued Liabilities
The following table summarizes the Company’s current accrued liabilities at June 30, 2019 and December 31, 2018 (in thousands).
 June 30,
2019
 December 31,
2018
Accrued evaluated and unproved and unevaluated property costs$100,014
 $86,318
Accrued midstream property costs21,840
 16,808
Accrued lease operating expenses20,812
 12,705
Accrued interest on debt18,599
 22,448
Accrued asset retirement obligations1,556
 1,350
Accrued partners’ share of joint interest charges17,165
 17,037
Other11,622
 14,189
Total accrued liabilities$191,608
 $170,855

Supplemental Cash Flow Information
The following table provides supplemental disclosures of cash flow information for the six months ended June 30, 2019 and 2018 (in thousands).
 Six Months Ended 
 June 30,
 2019 2018
Cash paid for interest expense, net of amounts capitalized$37,632
 $14,286
Increase in asset retirement obligations related to mineral properties$321
 $834
Increase in asset retirement obligations related to midstream properties$283
 $296
Increase (decrease) in liabilities for oil and natural gas properties capital expenditures$13,536
 $(26,389)
Increase (decrease) in liabilities for midstream properties capital expenditures$5,854
 $(2,371)
Decrease in liabilities for accrued cost to issue equity$
 $73
Transfer of inventory from oil and natural gas properties$370
 $343
Transfer of inventory to midstream properties$
 $(2,390)

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NOTE 1011 — SUPPLEMENTAL DISCLOSURES — Continued




Accrued Liabilities
The following table summarizes the Company’s current accrued liabilities at September 30, 2018 and December 31, 2017 (in thousands).
 September 30,
2018
 December 31,
2017
Accrued evaluated and unproved and unevaluated property costs$108,420
 $105,347
Accrued midstream property costs16,996
 14,823
Accrued lease operating expenses18,651
 12,611
Accrued interest on debt5,407
 8,345
Accrued asset retirement obligations928
 1,176
Accrued partners’ share of joint interest charges22,114
 27,628
Other6,314
 4,418
Total accrued liabilities$178,830
 $174,348
Supplemental Cash Flow Information
The following table provides supplemental disclosures of cash flow information for the nine months ended September 30, 2018 and 2017 (in thousands).
 Nine Months Ended 
 September 30,
 2018 2017
Cash paid for interest expense, net of amounts capitalized$29,773
 $14,542
Increase in asset retirement obligations related to mineral properties$1,705
 $2,484
Increase (decrease) in asset retirement obligations related to midstream properties$547
 $(138)
Increase in liabilities for oil and natural gas properties capital expenditures$5,157
 $35,940
Increase (decrease) in liabilities for midstream properties capital expenditures$1,864
 $(247)
Stock-based compensation expense recognized as liability$(107) $150
Decrease in liabilities for accrued cost to issue equity$
 $(343)
Increase in liabilities for accrued cost to issue senior notes$510
 $
Transfer of inventory from oil and natural gas properties$305
 $74
Transfer of inventory to midstream and other property and equipment$(2,691) $
The following table provides a reconciliation of cash and restricted cash recorded in the interim unaudited condensed consolidated balance sheets to cash and restricted cash as presented on the interim unaudited condensed consolidated statements of cash flows (in thousands).
 Six Months Ended 
 June 30,
 2019 2018
Cash$59,950
 $122,450
Restricted cash24,812
 21,063
Total cash and restricted cash$84,762
 $143,513

 Nine Months Ended 
 September 30,
 2018 2017
Cash$45,942
 $20,178
Restricted cash7,066
 10,744
Total cash and restricted cash$53,008
 $30,922


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Matador Resources Company and Subsidiaries
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS —
UNAUDITED — CONTINUED

NOTE 1112 — SEGMENT INFORMATION

The Company operates in two business segments: (i) exploration and production and (ii) midstream. The exploration and production segment is engaged in the acquisition, exploration, development, production and productionacquisition of oil and natural gas propertiesresources in the United States and is currently focused primarily on the oil and liquids-rich portion of the Wolfcamp and Bone Spring plays in the Delaware Basin in Southeast New Mexico and West Texas. The Company also operates in the Eagle Ford shale play in South Texas and the Haynesville shale and Cotton Valley plays in Northwest Louisiana and East Texas. The midstream segment conducts midstream operations in support of the Company’s exploration, development and production operations and provides natural gas processing, oil transportation services, oil, natural gas oil and salt water gathering services and salt water disposal services to third parties. Substantially all of the Company’s midstream operations in the Rustler Breaks and Wolf asset areas in the Delaware Basin are conducted through San Mateo.
The following tables present selected financial information for the periods presented regarding the Company’s business segments on a stand-alone basis, corporate expenses that are not allocated to a segment and the consolidation and elimination entries necessary to arrive at the financial information for the Company on a consolidated basis (in thousands). On a consolidated basis, midstream services revenues consist primarily of those revenues from midstream operations related to third parties, including working interest owners in the Company’s operated wells. All midstream services revenues associated with Company-owned production are eliminated in consolidation. In evaluating the operating results of the exploration and production and midstream segments, the Company does not allocate certain expenses to the individual segments, including general and administrative expenses. Such expenses are reflected in the column labeled “Corporate.”
Exploration and Production     Consolidations and Eliminations Consolidated CompanyExploration and Production     Consolidations and Eliminations Consolidated Company
 Midstream Corporate  Midstream Corporate 
Three Months Ended September 30, 2018         
Three Months Ended June 30, 2019         
Oil and natural gas revenues$215,248
 $1,034
 $
 $
 $216,282
$209,563
 $1,497
 $
 $
 $211,060
Midstream services revenues
 24,950
 
 (18,141) 6,809

 32,166
 
 (17,807) 14,359
Sales of purchased natural gas
 8,963
 
 
 8,963
Realized gain on derivatives5,424
 
 
 
 5,424
1,165
 
 
 
 1,165
Unrealized loss on derivatives(21,337) 
 
 
 (21,337)6,157
 
 
 
 6,157
Expenses(1)
128,263
 10,162
 19,041
 (18,141) 139,325
141,514
 23,425
 17,783
 (17,807) 164,915
Operating income (loss)(2)
$71,072
 $15,822
 $(19,041) $
 $67,853
$75,371
 $19,201
 $(17,783) $
 $76,789
Total assets$2,697,685
 $391,323
 $65,194
 $
 $3,154,202
$3,155,577
 $508,074
 $87,800
 $
 $3,751,451
Capital expenditures(3)
$716,751
 $47,153
 $312
 $
 $764,216
$166,532
 $41,707
 $1,400
 $
 $209,639
_____________________
(1)Includes depletion, depreciation and amortization expenses of $67.2$75.7 million and $2.6$3.8 million for the exploration and production and midstream segments, respectively. Also includes corporate depletion, depreciation and amortization expenses of $0.6 million.
(2)Includes $7.3$8.3 million in net income attributable to non-controlling interest in subsidiaries related to the midstream segment.
(3)Includes $554.9$8.2 million attributable to land and seismic acquisition expenditures related to the exploration and production segment and $23.1$24.2 million in capital expenditures attributable to non-controlling interest in subsidiaries related to the midstream segment.


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NOTE 1112 — SEGMENT INFORMATION — Continued




Exploration and Production     Consolidations and Eliminations Consolidated CompanyExploration and Production     Consolidations and Eliminations Consolidated Company
 Midstream Corporate  Midstream Corporate 
Three Months Ended September 30, 2017         
Three Months Ended June 30, 2018         
Oil and natural gas revenues$134,488
 $460
 $
 $
 $134,948
$207,229
 $1,790
 $
 $
 $209,019
Midstream services revenues
 11,261
 
 (8,043) 3,218

 19,896
 
 (16,489) 3,407
Realized gain on derivatives485
 
 
 
 485
Unrealized loss on derivatives(12,372) 
 
 
 (12,372)
Realized loss on derivatives(2,488) 
 
 
 (2,488)
Unrealized gain on derivatives1,429
 
 
 
 1,429
Expenses(1)
86,728
 5,598
 15,447
 (8,043) 99,730
126,025
 9,363
 18,475
 (16,489) 137,374
Operating income (loss)(2)
$35,873
 $6,123
 $(15,447) $
 $26,549
$80,145
 $12,323
 $(18,475) $
 $73,993
Total assets$1,590,677
 $222,274
 $35,586
 $
 $1,848,537
$2,058,447
 $354,068
 $143,332
 $
 $2,555,847
Capital expenditures(3)
$180,686
 $35,008
 $1,494
 $
 $217,188
$199,345
 $32,900
 $732
 $
 $232,977
_____________________
(1)
Includes depletion, depreciation and amortization expenses of $46.1$64.5 millionand $1.3$2.3 million for the exploration and production and midstream segments, respectively. Also includes corporate depletion, depreciation and amortization expenses of $0.4 million.$25,000.
(2)Includes $2.9$5.8 million in net income attributable to non-controlling interest in subsidiaries related to the midstream segment.
(3)Includes $17.2$16.1 million in capital expenditures attributable to non-controlling interest in subsidiaries related to the midstream segment.
Exploration and Production     Consolidations and Eliminations Consolidated CompanyExploration and Production     Consolidations and Eliminations Consolidated Company
 Midstream Corporate  Midstream Corporate 
Nine Months Ended September 30, 2018         
Six Months Ended June 30, 2019         
Oil and natural gas revenues$602,737
 $4,518
 $
 $
 $607,255
$401,226
 $3,103
 $
 $
 $404,329
Midstream services revenues
 60,658
 
 (47,374) 13,284

 62,420
 
 (36,223) 26,197
Realized loss on derivatives(1,322) 
 
 
 (1,322)
Sales of purchased natural gas
 20,194
 
 
 20,194
Realized gain on derivatives4,435
 
 
 
 4,435
Unrealized loss on derivatives(9,492) 
 
 
 (9,492)(39,562) 
 
 
 (39,562)
Expenses(1)
359,830
 26,723
 55,338
 (47,374) 394,517
283,493
 49,260
 34,734
 (36,223) 331,264
Operating income (loss)(2)
$232,093
 $38,453
 $(55,338) $
 $215,208
$82,606
 $36,457
 $(34,734) $
 $84,329
Total assets$2,697,685
 $391,323
 $65,194
 $
 $3,154,202
$3,155,577
 $508,074
 $87,800
 $
 $3,751,451
Capital expenditures(3)
$1,105,541
 $125,770
 $1,570
 $
 $1,232,881
$364,143
 $71,139
 $2,206
 $
 $437,488
_____________________
(1)Includes depletion, depreciation and amortization expenses of $184.4$148.3 million and $6.5$7.5 million for the exploration and production and midstream segments, respectively. Also includes corporate depletion, depreciation and amortization expenses of $1.8$1.2 million.
(2)Includes $18.2$15.8 million in net income attributable to non-controlling interest in subsidiaries related to the midstream segment.
(3)Includes $613.8$31.3 million attributable to land and seismic acquisition expenditures related to the exploration and production segment and $61.6$37.9 million in capital expenditures attributable to non-controlling interest in subsidiaries related to the midstream segment.


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NOTE 1112 — SEGMENT INFORMATION — Continued




Exploration and Production     Consolidations and Eliminations Consolidated CompanyExploration and Production     Consolidations and Eliminations Consolidated Company
 Midstream Corporate  Midstream Corporate 
Nine Months Ended September 30, 2017         
Six Months Ended June 30, 2018         
Oil and natural gas revenues$362,040
 $1,519
 $
 $
 $363,559
$387,489
 $3,484
 $
 $
 $390,973
Midstream services revenues
 32,244
 
 (25,373) 6,871

 35,708
 
 (29,233) 6,475
Realized loss on derivatives(1,176) 
 
 
 (1,176)(6,746) 
 
 
 (6,746)
Unrealized gain on derivatives21,449
 
 
 
 21,449
11,845
 
 
 
 11,845
Expenses(1)
233,145
 16,060
 47,055
 (25,373) 270,887
232,180
 16,561
 35,684
 (29,233) 255,192
Operating income (loss)(2)
$149,168
 $17,703
 $(47,055) $
 $119,816
$160,408
 $22,631
 $(35,684) $
 $147,355
Total assets$1,590,677
 $222,274
 $35,586
 $
 $1,848,537
$2,058,447
 $354,068
 $143,332
 $
 $2,555,847
Capital expenditures(3)
$554,642
 $75,235
 $4,710
 $
 $634,587
$388,790
 $78,617
 $1,258
 $
 $468,665
_____________________
(1)Includes depletion, depreciation and amortization expenses of $118.2$117.8 million and $3.8$3.9 million for the exploration and production and midstream segments, respectively. Also includes corporate depletion, depreciation and amortization expenses of $1.1$0.6 million.
(2)Includes $8.0$10.9 million in net income attributable to non-controlling interest in subsidiaries related to the midstream segment.
(3)Includes $35.8$38.5 million in capital expenditures attributable to non-controlling interest in subsidiaries related to the midstream segment.







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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS —
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NOTE 1213 — SUBSIDIARY GUARANTORS


The Notes are jointly and severally guaranteed by certain subsidiaries of Matador (the “Guarantor Subsidiaries”) on a full and unconditional basis (except for customary release provisions). At SeptemberJune 30, 2018,2019, the Guarantor Subsidiaries were 100% owned by Matador. Matador is a parent holding company and has no independent assets or operations, and there are no significant restrictions on the ability of Matador to obtain funds from the Guarantor Subsidiaries by dividend or loan. San Mateo and its subsidiaries (the “Non-Guarantor Subsidiaries”) are not guarantors of the Notes.
The following presentstables present condensed consolidating financial information of Matador (as issuer of the issuer (Matador)Notes), the Non-Guarantor Subsidiaries, the Guarantor Subsidiaries and all entities on a consolidated basis (in thousands). Elimination entries are necessary to combine the entities. This financial information is presented in accordance with the requirements of Rule 3-10 of Regulation S-X. The following financial information may not necessarily be indicative of results of operations, cash flows or financial position had the Guarantor Subsidiaries operated as independent entities.
Condensed Consolidating Balance Sheet
September 30, 2018
Condensed Consolidating Balance Sheet
June 30, 2019
Condensed Consolidating Balance Sheet
June 30, 2019
 Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
ASSETS                    
Intercompany receivable $939,294
 $26,382
 $
 $(965,676) $
 $1,582,828
 $12,535
 $
 $(1,595,363) $
Third-party current assets 827
 23,159
 201,446
 
 225,432
Current assets 3,967
 44,100
 225,317
 
 273,384
Net property and equipment 
 343,371
 2,578,603
 
 2,921,974
 
 438,681
 2,944,662
 
 3,383,343
Investment in subsidiaries 1,346,446
 
 183,297
 (1,529,743) 
 1,211,056
 
 109,227
 (1,320,283) 
Third-party long-term assets 6,425
 
 3,305
 (2,934) 6,796
Long-term assets 10,589
 1,700
 92,004
 (9,569) 94,724
Total assets $2,292,992
 $392,912
 $2,966,651
 $(2,498,353) $3,154,202
 $2,808,440
 $497,016
 $3,371,210
 $(2,925,215) $3,751,451
LIABILITIES AND EQUITY                    
Intercompany payable $
 $
 $965,676
 $(965,676) $
 $
 $
 $1,595,363
 $(1,595,363) $
Third-party current liabilities 5,763
 30,335
 290,909
 (256) 326,751
Current liabilities 18,493
 33,080
 286,004
 (802) 336,775
Senior unsecured notes payable 740,063
 
 
 
 740,063
 1,038,625
 
 
 
 1,038,625
Other third-party long-term liabilities 
 4,003
 363,620
 (2,678) 364,945
Other long-term liabilities 14,845
 250,583
 278,787
 (8,767) 535,448
Total equity attributable to Matador Resources Company 1,547,166
 183,297
 1,346,446
 (1,529,743) 1,547,166
 1,736,477
 109,227
 1,211,056
 (1,320,283) 1,736,477
Non-controlling interest in subsidiaries 
 175,277
 
 
 175,277
 
 104,126
 
 
 104,126
Total liabilities and equity $2,292,992
 $392,912
 $2,966,651
 $(2,498,353) $3,154,202
 $2,808,440
 $497,016
 $3,371,210
 $(2,925,215) $3,751,451
Condensed Consolidating Balance Sheet
December 31, 2017
Condensed Consolidating Balance Sheet
December 31, 2018
Condensed Consolidating Balance Sheet
December 31, 2018
 Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
ASSETS                    
Intercompany receivable $585,109
 $2,912
 $
 $(588,021) $
 $1,244,405
 $29,816
 $
 $(1,274,221) $
Third-party current assets 2,240
 9,334
 245,596
 
 257,170
Current assets 4,109
 34,027
 267,549
 
 305,685
Net property and equipment 
 223,178
 1,658,278
 
 1,881,456
 
 379,052
 2,743,812
 
 3,122,864
Investment in subsidiaries 1,147,295
 
 111,077
 (1,258,372) 
 1,490,401
 
 95,346
 (1,585,747) 
Third-party long-term assets 6,425
 
 3,642
 (3,003) 7,064
Long-term assets 23,897
 1,479
 11,095
 (9,502) 26,969
Total assets $1,741,069
 $235,424
 $2,018,593
 $(1,849,396) $2,145,690
 $2,762,812
 $444,374
 $3,117,802
 $(2,869,470) $3,455,518
LIABILITIES AND EQUITY                    
Intercompany payable $
 $
 $588,021
 $(588,021) $
 $
 $
 $1,274,221
 $(1,274,221) $
Third-party current liabilities 8,847
 19,891
 254,142
 (274) 282,606
Current liabilities 22,874
 27,988
 279,884
 (724) 330,022
Senior unsecured notes payable 574,073
 
 
 
 574,073
 1,037,837
 
 
 
 1,037,837
Other third-party long-term liabilities 1,593
 3,466
 29,135
 (2,729) 31,465
Other long-term liabilities 13,221
 230,263
 73,296
 (8,778) 308,002
Total equity attributable to Matador Resources Company 1,156,556
 111,077
 1,147,295
 (1,258,372) 1,156,556
 1,688,880
 95,346
 1,490,401
 (1,585,747) 1,688,880
Non-controlling interest in subsidiaries 
 100,990
 
 
 100,990
 
 90,777
 
 
 90,777
Total liabilities and equity $1,741,069
 $235,424
 $2,018,593
 $(1,849,396) $2,145,690
 $2,762,812
 $444,374
 $3,117,802
 $(2,869,470) $3,455,518
Condensed Consolidating Statement of Operations
For the Three Months Ended September 30, 2018
Condensed Consolidating Statement of Operations
For the Three Months Ended June 30, 2019
Condensed Consolidating Statement of Operations
For the Three Months Ended June 30, 2019
 Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
Total revenues $
 $25,640
 $199,386
 $(17,848) $207,178
 $
 $41,720
 $216,885
 $(16,901) $241,704
Total expenses 1,184
 10,708
 145,281
 (17,848) 139,325
 901
 22,564
 158,351
 (16,901) 164,915
Operating (loss) income (1,184) 14,932
 54,105
 
 67,853
 (901) 19,156
 58,534
 
 76,789
Net loss on asset sales and inventory impairment 
 
 (196) 
 (196)
Inventory impairment 
 
 (368) 
 (368)
Interest expense (10,340) 
 
 
 (10,340) (15,888) (2,180) 
 
 (18,068)
Prepayment premium on extinguishment of debt (31,226) 
 
 
 (31,226)
Other (expense) income (6) 8
 (978) 
 (976)
Other income (expense) 
 3
 (426) 
 (423)
Earnings in subsidiaries 60,550
 
 7,619
 (68,169) 
 66,399
 
 8,659
 (75,058) 
Income before income taxes 17,794
 14,940
 60,550
 (68,169) 25,115
 49,610
 16,979
 66,399
 (75,058) 57,930
Total income tax provision
 12,858
 
 
 
 12,858
Net income attributable to non-controlling interest in subsidiaries 
 (7,321) 
 
 (7,321) 
 (8,320) 
 
 (8,320)
Net income attributable to Matador Resources Company shareholders $17,794
 $7,619
 $60,550
 $(68,169) $17,794
 $36,752
 $8,659
 $66,399
 $(75,058) $36,752
Condensed Consolidating Statement of Operations
For the Three Months Ended September 30, 2017
Condensed Consolidating Statement of Operations
For the Three Months Ended June 30, 2018
Condensed Consolidating Statement of Operations
For the Three Months Ended June 30, 2018
 Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
Total revenues $
 $11,242
 $122,675
 $(7,638) $126,279
 $
 $21,356
 $206,219
 $(16,208) $211,367
Total expenses 1,175
 5,253
 100,940
 (7,638) 99,730
 1,178
 9,466
 142,938
 (16,208) 137,374
Operating (loss) income (1,175) 5,989
 21,735
 
 26,549
 (1,178) 11,890
 63,281
 
 73,993
Net gain on asset sales and inventory impairment 
 
 16
 
 16
Interest expense (8,550) 
 
 
 (8,550) (8,004) 
 
 
 (8,004)
Other income 27
 11
 (74) 
 (36)
Other income (expense) 
 11
 (363) 
 (352)
Earnings in subsidiaries 24,674
 
 2,997
 (27,671) 
 68,988
 
 6,070
 (75,058) 
Income before income taxes 14,976
 6,000
 24,674
 (27,671) 17,979
 59,806
 11,901
 68,988
 (75,058) 65,637
Total income tax (benefit) provision
 (63) 63
 
 
 
Net income attributable to non-controlling interest in subsidiaries 
 (2,940) 
 
 (2,940) 
 (5,831) 
 
 (5,831)
Net income attributable to Matador Resources Company shareholders $15,039
 $2,997
 $24,674
 $(27,671) $15,039
 $59,806
 $6,070
 $68,988
 $(75,058) $59,806
Condensed Consolidating Statement of Operations
For the Nine Months Ended September 30, 2018
Condensed Consolidating Statement of Operations
For the Six Months Ended June 30, 2019
Condensed Consolidating Statement of Operations
For the Six Months Ended June 30, 2019
 Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
Total revenues $
 $64,190
 $592,085
 $(46,550) $609,725
 $
 $84,596
 $366,133
 $(35,136) $415,593
Total expenses 3,596
 27,102
 410,369
 (46,550) 394,517
 1,936
 48,069
 316,395
 (35,136) 331,264
Operating (loss) income (3,596) 37,088
 181,716
 
 215,208
 (1,936) 36,527
 49,738
 
 84,329
Net loss on asset sales and inventory impairment 
 
 (196) 
 (196)
Inventory impairment 
 
 (368) 
 (368)
Interest expense (26,835) 
 
 
 (26,835) (31,675) (4,322) 
 
 (35,997)
Other (expense) income 
 19
 (1,294) 
 (1,275)
Prepayment premium on extinguishment of debt (31,226) 
 
 
 (31,226)
Other income (expense) 
 3
 (535) 
 (532)
Earnings in subsidiaries 199,151
 
 18,925
 (218,076) 
 65,261
 
 16,426
 (81,687) 
Income before income taxes 137,494
 37,107
 199,151
 (218,076) 155,676
 31,650
 32,208
 65,261
 (81,687) 47,432
Total income tax provision
 11,845
 
 
 
 11,845
Net income attributable to non-controlling interest in subsidiaries 
 (18,182) 
 
 (18,182) 
 (15,782) 
 
 (15,782)
Net income attributable to Matador Resources Company shareholders $137,494
 $18,925
 $199,151
 $(218,076) $137,494
 $19,805
 $16,426
 $65,261
 $(81,687) $19,805
Condensed Consolidating Statement of Operations
For the Nine Months Ended September 30, 2017
Condensed Consolidating Statement of Operations
For the Six Months Ended June 30, 2018
Condensed Consolidating Statement of Operations
For the Six Months Ended June 30, 2018
 Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
Total revenues $
 $32,179
 $382,520
 $(23,996) $390,703
 $
 $38,550
 $392,699
 $(28,702) $402,547
Total expenses 4,021
 13,935
 276,927
 (23,996) 270,887
 2,412
 16,394
 265,088
 (28,702) 255,192
Operating (loss) income (4,021) 18,244
 105,593
 
 119,816
 (2,412) 22,156
 127,611
 
 147,355
Net gain on asset sales and inventory impairment 
 
 23
 
 23
Interest expense (26,229) 
 
 
 (26,229) (16,495) 
 
 
 (16,495)
Other income 27
 37
 1,892
 
 1,956
Other income (expense) 6
 11
 (316) 
 (299)
Earnings in subsidiaries 117,574
 
 10,066
 (127,640) 
 138,601
 
 11,306
 (149,907) 
Income before income taxes 87,351
 18,281
 117,574
 (127,640) 95,566
 119,700
 22,167
 138,601
 (149,907) 130,561
Total income tax (benefit) provision
 (181) 181
 
 
 
Net income attributable to non-controlling interest in subsidiaries 
 (8,034) 
 
 (8,034) 
 (10,861) 
 
 (10,861)
Net income attributable to Matador Resources Company shareholders $87,532
 $10,066
 $117,574
 $(127,640) $87,532
 $119,700
 $11,306
 $138,601
 $(149,907) $119,700
Condensed Consolidating Statement of Cash Flows
For the Nine Months Ended September 30, 2018
Condensed Consolidating Statement of Cash Flows
For the Six Months Ended June 30, 2019
Condensed Consolidating Statement of Cash Flows
For the Six Months Ended June 30, 2019
 Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
Net cash (used in) provided by operating activities $(361,016) $12,318
 $768,016
 $
 $419,318
 $(109) $51,266
 $143,340
 $
 $194,497
Net cash used in investing activities 
 (120,836) (1,152,987) 53,295
 (1,220,528) 
 (59,309) (327,195) (8,190) (394,694)
Net cash provided by financing activities 361,155
 109,400
 334,476
 (53,295) 751,736
 
 13,584
 179,201
 8,190
 200,975
Increase (decrease) in cash and restricted cash 139
 882
 (50,495) 
 (49,474)
(Decrease) increase in cash and restricted cash (109) 5,541
 (4,654) 
 778
Cash and restricted cash at beginning of period 286
 5,663
 96,533
 
 102,482
 456
 18,841
 64,687
 
 83,984
Cash and restricted cash at end of period $425
 $6,545
 $46,038
 $
 $53,008
 $347
 $24,382
 $60,033
 $
 $84,762
Condensed Consolidating Statement of Cash Flows
For the Six Months Ended June 30, 2018
  Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
Net cash (used in) provided by operating activities $(224,441) $10,225
 $468,424
 $
 $254,208
Net cash used in investing activities 
 (79,119) (454,478) 40,035
 (493,562)
Net cash provided by financing activities 226,539
 83,400
 10,481
 (40,035) 280,385
Increase in cash and restricted cash 2,098
 14,506
 24,427
 
 41,031
Cash and restricted cash at beginning of period 286
 5,663
 96,533
 
 102,482
Cash and restricted cash at end of period $2,384
 $20,169
 $120,960
 $
 $143,513
Condensed Consolidating Statement of Cash Flows
For the Nine Months Ended September 30, 2017
  Matador Non-Guarantor Subsidiaries Guarantor Subsidiaries Eliminating Entries Consolidated
Net cash (used in) provided by operating activities $(99,546) $24,075
 $297,987
 $
 $222,516
Net cash provided by (used in) investing activities 33
 (75,749) (387,257) (133,880) (596,853)
Net cash provided by (used in) financing activities 
 58,732
 (1,495) 133,880
 191,117
(Decrease) increase in cash and restricted cash (99,513) 7,058
 (90,765) 
 (183,220)
Cash and restricted cash at beginning of period 99,795
 2,900
 111,447
 
 214,142
Cash and restricted cash at end of period $282
 $9,958
 $20,682
 $
 $30,922


Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations
The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our interim unaudited condensed consolidated financial statements and related notes thereto contained herein and the consolidated financial statements and related notes thereto contained in our Annual Report on Form 10-K for the year ended December 31, 20172018 (the “Annual Report”) filed with the Securities and Exchange Commission (“SEC”), on March 1, 2019, along with Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in the Annual Report. The Annual Report is accessible on the SEC’s website at www.sec.gov and on our website at www.matadorresources.com. Our discussion and analysis includes forward-looking information that involves risks and uncertainties and should be read in conjunction with the “Risk Factors” section of the Annual Report and the section entitled “Cautionary Note Regarding Forward-Looking Statements” below for information about the risks and uncertainties that could cause our actual results to be materially different than our forward-looking statements.
In this Quarterly Report on Form 10-Q (the “Quarterly Report”), (i) references to “we,” “our” or the “Company” refer to Matador Resources Company and its subsidiaries as a whole (unless the context indicates otherwise) and, (ii) references to “Matador” refer solely to Matador Resources Company.Company and (iii) references to “San Mateo” refer to San Mateo Midstream, LLC (“San Mateo I”) together with San Mateo Midstream II, LLC (“San Mateo II”). For certain oil and natural gas terms used in this Quarterly Report, please see the “Glossary of Oil and Natural Gas Terms” included with the Annual Report.
Cautionary Note Regarding Forward-Looking Statements
Certain statements in this Quarterly Report constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended or the Securities Act,(the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended or the Exchange Act.(the “Exchange Act”). Additionally, forward-looking statements may be made orally or in press releases, conferences, reports, on our website or otherwise, in the future by us or on our behalf. Such statements are generally identifiable by the terminology used such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “forecasted,” “hypothetical,” “intend,” “may,” “might,” “plan,” “potential,” “predict,” “project,” “should,” “would” or other similar words, although not all forward-looking statements contain such identifying words.
By their very nature, forward-looking statements require us to make assumptions that may not materialize or that may not be accurate. Forward-looking statements are subject to known and unknown risks and uncertainties and other factors that may cause actual results, levels of activity and achievements to differ materially from those expressed or implied by such statements. Such factors include, among others: general economic conditions, changes in oil, natural gas and natural gas liquids prices and the demand for oil, natural gas and natural gas liquids, the success of our drilling program, the timing of planned capital expenditures, the sufficiency of our cash flow from operations together with available borrowing capacity under our credit agreement,facilities, uncertainties in estimating proved reserves and forecasting production results, operational factors affecting the commencement or maintenance of producing wells, the condition of the capital markets generally, as well as our ability to access them, the proximity to our properties and capacity of transportation facilities, availability of acquisitions, our ability to integrate acquisitions with our business, weather and environmental conditions, uncertainties regarding environmental regulations or litigation and other legal or regulatory developments affecting our business, and the other factors discussed below and elsewhere in this Quarterly Report and in other documents that we file with or furnish to the SEC, all of which are difficult to predict. Forward-looking statements may include statements about:
our business strategy;
our reserves;
our technology;estimated future reserves and the present value thereof;
our cash flows and liquidity;
our financial strategy, budget, projections and operating results;
our oil and natural gas realized prices;
the timing and amount of future production of oil and natural gas;
the availability of drilling and production equipment;
the availability of oil field labor;
the amount, nature and timing of capital expenditures, including future exploration and development costs;
the availability and terms of capital;
our drilling of wells;
our ability to negotiate and consummate acquisition and divestiture opportunities;
government regulation and taxation of the oil and natural gas industry;
our marketing of oil and natural gas;
our exploitation projects or property acquisitions;
the integration of acquisitions with our business;

our ability and the ability of our midstream joint ventureSan Mateo to construct and operate midstream facilities, including the operation and expansion of our Black River cryogenic natural gas processing plant and the drilling of additional salt water disposal wells;
the ability of our midstream joint ventureSan Mateo to attract third-party volumes;
our costs of exploiting and developing our properties and conducting other operations;
general economic conditions;
competition in the oil and natural gas industry, including in both the exploration and production and midstream segments;
the effectiveness of our risk management and hedging activities;
our technology;
environmental liabilities;
counterparty credit risk;
developments in oil-producing and natural gas-producing countries;
our future operating results;
estimated future reserves and the present value thereof; and
our plans, objectives, expectations and intentions contained in this Quarterly Report or in our other filings with the SEC that are not historical.
Although we believe that the expectations conveyed by the forward-looking statements in this Quarterly Report are reasonable based on information available to us on the date hereof, no assurances can be given as to future results, levels of activity, achievements or financial condition.
You should not place undue reliance on any forward-looking statement and should recognize that the statements are predictions of future results, which may not occur as anticipated. Actual results could differ materially from those anticipated in the forward-looking statements and from historical results, due to the risks and uncertainties described above, as well as others not now anticipated. The impact of any one factor on a particular forward-looking statement is not determinable with certainty as such factors are interdependent upon other factors. The foregoing statements are not exclusive and further information concerning us, including factors that potentially could materially affect our financial results, may emerge from time to time. We undertake no obligation to update forward-looking statements to reflect actual results or changes in factors or assumptions affecting such forward-looking statements, except as required by law, including the securities laws of the United States and the rules and regulations of the SEC.
Overview
We are an independent energy company founded in July 2003 engaged in the exploration, development, production and acquisition of oil and natural gas resources in the United States, with an emphasis on oil and natural gas shale and other unconventional plays. Our current operations are focused primarily on the oil and liquids-rich portion of the Wolfcamp and Bone Spring plays in the Delaware Basin in Southeast New Mexico and West Texas. We also operate in the Eagle Ford shale play in South Texas and the Haynesville shale and Cotton Valley plays in Northwest Louisiana and East Texas. Additionally, we conduct midstream operations, primarily through our midstream joint venture, San Mateo, Midstream, LLC (“San Mateo”), in support of our exploration, development and production operations and provide natural gas processing, oil transportation services, oil, natural gas and salt water gathering services and salt water disposal services to third parties.
ThirdSecond Quarter and Year-to-Date Highlights
For the three months ended SeptemberJune 30, 2018,2019, our total oil equivalent production was 5.05.6 million BOE, and our average daily oil equivalent production was 54,62561,290 BOE per day, of which 32,31736,767 Bbl per day, or 60%, was oil and 147.1 MMcf per day, or 40%, was natural gas. Our oil production of 3.3 million Bbl for the three months ended June 30, 2019 increased 24% year-over-year from 2.7 million Bbl for the three months ended June 30, 2018. Our natural gas production of 13.4 Bcf for the three months ended June 30, 2019 increased 6% year-over-year from 12.7 Bcf for the three months ended June 30, 2018. For the six months ended June 30, 2019, our total oil equivalent production was 11.0 million BOE, and our average daily oil equivalent production was 60,619 BOE per day, of which 35,648 Bbl per day, or 59%, was oil and 133.8149.8 MMcf per day, or 41%, was natural gas. Our oil production of 3.06.5 million Bbl for the threesix months ended SeptemberJune 30, 20182019 increased 37%27% year-over-year from 2.25.1 million Bbl for the threesix months ended SeptemberJune 30, 2017.2018. Our natural gas production of 12.327.1 Bcf for the threesix months ended SeptemberJune 30, 20182019 increased 21%19% year-over-year from 10.222.8 Bcf for the threesix months ended SeptemberJune 30, 2017. For the nine months ended September 30, 2018, our total oil equivalent production was 13.9 million BOE, and our average daily oil equivalent production was 50,979 BOE per day, of which 29,529 Bbl per day, or 58%, was oil and 128.7 MMcf per day, or 42%, was natural gas. Our oil production of 8.1 million Bbl for the nine months ended September 30, 2018 increased 44% year-over-year from 5.6 million Bbl for the nine months ended September 30, 2017. Our natural gas production of 35.1 Bcf for the nine months ended September 30, 2018 increased 27% year-over-year from 27.6 Bcf for the nine months ended September 30, 2017.2018.
For the thirdsecond quarter of 2018,2019, we reported net income attributable to Matador Resources Company shareholders of approximately $17.8$36.8 million, or $0.15$0.31 per diluted common share, on a generally accepted accounting principles in the United States (“GAAP”) basis, as compared to net income attributable to Matador Resources Company shareholders of $59.8 million, or $0.53 per diluted common share, for the second quarter of 2018. For the second quarter of 2019, our Adjusted EBITDA attributable to Matador Resources Company shareholders (“Adjusted EBITDA”), a non-GAAP financial measure, was $144.1 million, as compared to Adjusted EBITDA of $137.3 million during the second quarter of 2018. For a definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to our net income and net cash provided by operating activities, see

“— Liquidity and Capital Resources — Non-GAAP Financial Measures.” For more information regarding our financial results for the second quarter of 2019, see “— Results of Operations” below.
For the six months ended June 30, 2019, we reported net income attributable to Matador Resources Company shareholders of approximately $19.8 million, or $0.17 per diluted common share, on a GAAP basis, as compared to net income attributable to Matador Resources Company shareholders of $15.0$119.7 million, or $0.15$1.08 per diluted common share, for the third quarter of 2017.six months ended June 30, 2018. For the third quarter of 2018, our Adjusted EBITDA attributable to Matador Resources Company shareholders (“Adjusted EBITDA”), a non-GAAP financial measure, was $155.4 million, as compared to Adjusted EBITDA of $84.8 million during the third quarter of 2017. For a definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to our net income and net

cash provided by operating activities, see “— Liquidity and Capital Resources — Non-GAAP Financial Measures.” For more information regarding our financial results for the third quarter of 2018, see “— Results of Operations” below.
For the ninesix months ended SeptemberJune 30, 2018, we reported net income attributable to Matador Resources Company shareholders of approximately $137.5 million, or $1.21 per diluted common share, on a GAAP basis, as compared to net income attributable to Matador Resources Company shareholders of $87.5 million, or $0.87 per diluted common share, for the nine months ended September 30, 2017. For the nine months ended September 30, 2018,2019, our Adjusted EBITDA, a non-GAAP financial measure, was $410.0$268.9 million, as compared to Adjusted EBITDA of $227.4$254.6 million during the ninesix months ended SeptemberJune 30, 2017.2018. For a definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to our net income (loss) and net cash provided by operating activities, see “— Liquidity and Capital Resources — Non-GAAP Financial Measures.” For more information regarding our financial results for the ninesix months ended SeptemberJune 30, 2018,2019, see “— Results of Operations” below.
Operations Update
During the thirdsecond quarter of 2018,2019, we continued our focus on the exploration, delineation and development of our Delaware Basin acreage in Loving County, Texas and Lea and Eddy Counties, New Mexico. We began 20182019 operating six drilling rigs in the Delaware Basin and continued to do so through Septemberat June 30, 2018. We expect to operate those2019. During the second quarter of 2019, these six operated drilling rigs in thewere deployed across our Delaware Basin through the remainder of 2018, including three rigs in the Rustler Breaks asset area, one rig in the Wolf/Jackson Trust asset areas, one rig in the Ranger/Arrowhead and Twin Lakes asset areas and one rig inbut with an increased focus on the Antelope Ridge asset area. We have continued to build significant optionality into our drilling program. Three of our rigs operate on longer-term contracts with remaining average terms between 12 and 15 months. The other three rigs are on short-term contracts with remaining obligations of six months or less. This affords us the ability to modify our drilling program as management may determine necessary based on changing commodity prices and other factors.
Effective October 1, 2018, we added a seventh operated drilling rig to our drilling program on a short-term contract. This seventh drilling rig was deployed initially in South Texas to drill up to ten wells, primarily in the Eagle Ford shale. This rig is expected to operate in South Texas throughout the fourth quarter of 2018 and into early 2019. At that time, subject to commodity prices and other economic circumstances, we anticipate moving this rig to the Delaware Basin, most likely to either the Arrowhead or Antelope Ridge asset area. We then expect to operate this seventh rigsix rigs in the Delaware Basin throughout the remainder of 2019.
By initially deploying2019, with four rigs operating between the Rustler Breaks and Antelope Ridge asset areas, one rig operating in the Wolf and Jackson Trust asset areas and one rig operating in the Arrowhead, Ranger and Twin Lakes asset areas, although this seventh rig, in South Texas overparticular, is expected to operate primarily in the next several months, we will be able to add toStebbins area and surrounding leaseholds in the southern portion of the Arrowhead asset area (the “Greater Stebbins Area”) for the remainder of 2019.
We also concluded completion operations on our oil productionnine-well program in South Texas during a time when our realized oil pricethe second quarter of 2019, which included eight completions in the Gulf Coast region is expected to be significantly higher than our realized oil price in the Delaware Basin. Further, given the results of the five-well Eagle Ford program we drilled in 2017, we anticipate strong economic returns from this drilling program. In addition, drilling these wells in South Texas provides us with the opportunity toformation and one test and establish the prospectivity of new formations, such as the Austin Chalk which we have not previously tested on our South Texas leasehold. This short drilling program should also enable us to satisfy several near-term lease expiration obligations.formation. The first fewfinal four wells in this South Texas drillingnine-well program are expected to bewere completed and placed on production lateturned to sales in the fourthsecond quarter of 2018. As a result,2019. These wells included two Eagle Ford completions on the Haverlah leasehold in Atascosa County, which were turned to sales in April, and two additional Eagle Ford completions on the Lloyd Hurt leasehold, which were turned to sales in May 2019. The rig used to drill these nine wells was released in early February 2019, and we expect the initial production from these wells should have a limited impact on our fourth quarter and full-year 2018 production estimates.
During the third quarter of 2018, we did not conduct anyno additional operated drilling and completion activities on our leasehold propertiesplanned in the Eagle Ford shale play in South Texas or infor the Haynesville shale and Cotton Valley plays in Northwest Louisiana and East Texas. We did participate in the drilling and completionremainder of two gross (0.3 net) non-operated Eagle Ford shale wells that were turned to sales in the third quarter of 2018.2019.
We completed and turned to sales a total of 3619 gross (16.6(15.1 net) wells in the Delaware Basin during the thirdsecond quarter of 2018,2019, including 1914 gross (15.0(13.1 net) operated horizontal wells, two gross (2.0 net) operated vertical wells and 17three gross (1.6(0.1 net) non-operated horizontal wells. During the thirdsecond quarter of 2018,2019, we began producing oil and natural gas from a total of six12 gross (2.7(8.5 net) wells in the Antelope Ridge asset area, including threenine gross (2.7(8.4 net) operated wells and three gross (less than 0.1(0.1 net) non-operated wells. The threeOf the nine gross operated wells includedin the Antelope Ridge asset area, two were Wolfcamp A-LowerA-XY completions, three were First Bone Spring completions, three were Third Bone Spring completions and one Thirdwas a vertical completion in the Wolfcamp formation. In the Rustler Breaks and Arrowhead asset areas, we did not complete or turn to sales any operated or non-operated wells during the second quarter of 2019. In the Wolf and Jackson Trust asset areas, we began producing oil and natural gas from two gross (1.8 net) operated wells during the second quarter of 2019, including one Wolfcamp B completion and one Second Bone Spring completion. In the Rustler Breaks asset area,addition, we began producing oil and natural gas from a total of 26four gross (11.7 net) wells during the third quarter of 2018, including 13 gross (10.5 net) operated and 13 gross (1.2 net) non-operated wells. Of the 13 gross operated wells in the Rustler Breaks asset area, eight were Wolfcamp A-XY completions, two were Wolfcamp A-Lower completions, one was a Wolfcamp B-Blair completion and two were Second Bone Spring completions. In addition, we began producing oil and natural gas from two gross (1.0(3.9 net) operated wells in the Wolf and Jackson TrustRanger asset areasarea during the thirdsecond quarter of 2018,2019, including one Wolfcamp A-XYFirst Bone Spring completion, two Second Bone Spring completions and one Wolfcamp BThird Bone Spring completion. Finally, in the ArrowheadTwin Lakes asset area, we began producing oil and natural gas from one gross (0.8(1.0 net) operated well, a Wolfcamp A-XYvertical completion in the Morrow formation, during the thirdsecond quarter of 2018.2019.
As a result of our ongoing drilling and completion operations in these asset areas, our Delaware Basin production has continued to increase over the past twelve12 months. Our total Delaware Basin production for the thirdsecond quarter of 20182019 was 47,83151,758 BOE per day, consisting of 29,93132,840 Bbl of oil per day and 107.4113.5 MMcf of natural gas per day, a 56%an 11% increase from

production of 30,70746,489 BOE per day, consisting of 18,68927,381 Bbl of oil per day and 72.1114.6 MMcf of natural gas per day, in the thirdsecond quarter of 2017.2018. The Delaware Basin contributed approximately 93%89% of our daily oil production and approximately 80%77% of our daily natural gas production in the thirdsecond quarter of 2018,2019, as compared to approximately 79%92% of our daily oil production and approximately 65%82% of our daily natural gas production in the thirdsecond quarter of 2017.2018.
Recent Acreage Acquisitions
On September 12, 2018, we announced the successful acquisition of 8,400 gross (8,400 net)We did not conduct any operated drilling and completion activities on our leasehold acres in Lea and Eddy Counties, New Mexico for approximately $387 million, or a weighted average cost of approximately $46,000 per net acre,properties in the Bureau of Land Management New Mexico OilHaynesville shale and Gas Lease Sale on September 5Cotton Valley plays in Northwest Louisiana and 6, 2018 (the “BLM Acquisition”). The acquired leasehold acreage includes approximately 2,800 gross/net acresEast Texas in the Stateline area, 4,800 gross/net acres in the Antelope Ridge asset area, 400 gross/net acres in the Arrowhead asset area and 400 gross/net acres in the Twin Lakes asset area.
We completed the BLM Acquisition on September 20, 2018, and we expect the leases will be issued to us in the fourthsecond quarter of 2018. We financed2019, although we did participate in eight gross (0.3 net) non-operated Haynesville shale wells that were completed and turned to sales.

Capital Resources Update
In April 2019, the BLM Acquisition using cash on hand and borrowingslenders under our revolving credit facilityagreement (the “Credit Agreement”). At September 30,, led by Royal Bank of Canada, completed their review of our proved oil and natural gas reserves at December 31, 2018, we had $325.0and as a result, the borrowing base was increased to $900.0 million in borrowings outstandingwith the elected borrowing commitment remaining at $500.0 million. This April 2019 redetermination constituted the regularly scheduled May 1 redetermination. Borrowings under the Credit Agreement and approximately $3.0 million in outstanding letters of credit issued pursuantare limited to the Credit Agreement.lowest of the borrowing base, the maximum facility amount and the elected borrowing commitment.
In additionJune 2019, the lender commitments under San Mateo I’s revolving credit facility (the “San Mateo Credit Facility”), led by The Bank of Nova Scotia, were increased to $325.0 million, using the BLM Acquisition, during the third quarter of 2018, we acquired approximately 12,600 net leasehold and mineral acres in and around our existing acreage positions in the Delaware Basin, including approximately 2,600 net mineral acres. Including the BLM Acquisition, we have added approximately 27,200 net leasehold and mineral acres in the Delaware Basin from January 1 through October 31, 2018, bringing our total Delaware Basin leasehold and mineral position to approximately 222,200 gross (131,200 net) acres at October 31, 2018.
Capital Market Transactions
As of June 30, 2018, we had $575.0 million aggregate principal amount of outstanding 6.875% senior notes due 2023 (the “2023 Notes”). On August 21, 2018, we issued $750.0 million of 5.875% senior unsecured notes due 2026 (the “Original 2026 Notes”) in a private placement (the “2026 Notes Offering”).accordion feature. The Original 2026 Notes were issued at par value, and we received net proceeds of approximately $740.0 million, after deducting the initials purchasers’ discounts and estimated offering expenses. In conjunction with the 2026 Notes Offering, in August and September 2018, respectively, we completed a tender offer to purchase for cash and subsequent redemption ofSan Mateo Credit Facility is guaranteed by San Mateo I’s subsidiaries, secured by substantially all of our $575.0 million aggregate principal amount of 2023 Notes (the “2023 Notes Tender OfferSan Mateo I’s assets, including real property, and Redemption”). We used a portion of the net proceeds from the 2026 Notes Offeringis non-recourse with respect to fund the 2023 Notes Tender OfferMatador and Redemption.its wholly-owned subsidiaries, as well as San Mateo II.
On October 4, 2018, we issued an additional $300.0 million of 5.875% senior unsecured notes due 2026 (the “Additional 2026 Notes” and, collectively with the Original 2026 Notes, the “Notes”). The Additional 2026 Notes were issued pursuant to, and are governed by, the same indenture governing the Original 2026 Notes (the “Indenture”). The Additional 2026 Notes were issued at 100.5% of par, plus accrued interest from August 21, 2018. We received net proceeds from this offering of approximately $297.6 million, after deducting the initial purchasers’ discounts and estimated offering expenses but excluding accrued interest from August 21, 2018 paid by the initial purchasers of the Additional 2026 Notes. The proceeds from this offering were used to repay a portion of the outstanding borrowings under the Credit Agreement, which were incurred in connection with the BLM Acquisition. The Notes will mature September 15, 2026, and interest is payable on the Notes semi-annually in arrears on each March 15 and September 15.
20182019 Capital Expenditure Budget
On August 1, 2018,July 31, 2019, we adjustedincreased our anticipated 20182019 midstream capital expenditures from $55 to $75 million to $70 to $90 million, primarily for capital expenditures necessary to accommodate new customers and increased commitments from existing customers. The anticipated 2019 midstream capital expenditures reflect our proportionate share of San Mateo’s estimated 2019 capital expenditures and also account for portions of the $50 million capital carry that Five Point Energy LLC (“Five Point”) agreed to provide to us in conjunction with the formation of San Mateo II.
At July 31, 2019, our 2019 estimated capital expenditures for drilling, completing and completions (including equipping wells for production) from $530 to $570 million to $620 to $650 million and our anticipated midstream capital expenditures remained $70 to $90 million, which primarily represents our 51% share of San Mateo’s 2018 estimated capital expenditures. With the addition of the seventh drilling rig deployed to South Texas on October 1, 2018, we increased our anticipated 2018 capital expenditures for drilling and completions (including equipping wells for production) by approximately 4%, or $25 to $30 million, to $645$640 to $680 million. We have allocated substantially allmillion, despite an increase of four gross (6.8 net) additional operated wells expected to be completed and turned to sales in 2019, as compared to our estimated 2018original estimates. See “— Liquidity and Capital Resources — 2019 Capital Expenditure Budget” for more information regarding our 2019 capital expenditures to the further delineation and development of our growing leasehold position and midstream assets in the Delaware Basin, with the exception of the South Texas drilling program beginning in the fourth quarter of 2018 and amounts allocated to limited non-operated activities in the Eagle Ford and Haynesville shales. For the remainder of 2018, our Delaware Basin drilling program will continue to focus on the development of the Wolf and Rustler Breaks asset areas and the further delineation and development of the Jackson Trust, Ranger/Arrowhead, Antelope Ridge and Twin Lakes asset areas, although we may also continue to delineate previously untested zones in the Wolf and Rustler Breaks asset areas.

Natural Gas Gathering and Processing Agreement
In October 2018, a subsidiary of San Mateo entered into a long-term agreement with a producer in Eddy County, New Mexico relating to the gathering and processing of such producer’s natural gas production. As a result of this agreement, along with prior natural gas gathering and processing agreements entered into by San Mateo with the Company and other customers, San Mateo has now entered into contracts to provide firm gathering and processing services for over 200 million cubic feet of natural gas per day, or over 80% of the designed inlet capacity of 260 million cubic feet of natural gas per day, at its Black River cryogenic natural gas processing plant in the Rustler Breaks asset area in Eddy County, New Mexico (the “Black River Processing Plant”).expenditure budget.
Critical Accounting Policies
Other than as discussed in Note 2 to the interim unaudited condensed consolidated financial statements in this Quarterly Report related to the adoption of Accounting Standards Update 2014-09, Revenue from Contracts(“ASU”) 2016-02, Leases (Topic 842) and the amendments provided for in ASU 2018-11, Leases (Topic 842), along with Customersthe adoption of ASU 2018-07, Compensation - Stock Compensation (Topic 606)718): Improvements to Nonemployee Share-Based Payment Accounting,there have been no changes to our critical accounting policies and estimates from those set forth in the Annual Report.
Recent Accounting Pronouncements
See Note 2 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for a summary of recent accounting pronouncements that we believe may have anand the impact of the adoption of these pronouncements on our financial statements upon adoption.statements.

Results of Operations
Revenues
The following table summarizes our unaudited revenues and production data for the periods indicated:
Three Months Ended 
 September 30,
 Nine Months Ended 
 September 30,
Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
2018 2017 2018 20172019 2018 2019 2018
Operating Data:              
Revenues (in thousands):(1)
              
Oil$169,913
 $100,150
 $484,343
 $265,107
$189,085
 $166,271
 $343,288
 $314,430
Natural gas46,369
 34,798
 122,912
 98,452
21,975
 42,748
 61,041
 76,543
Total oil and natural gas revenues216,282
 134,948
 607,255
 363,559
211,060
 209,019
 404,329
 390,973
Third-party midstream services revenues6,809
 3,218
 13,284
 6,871
14,359
 3,407
 26,197
 6,475
Sales of purchased natural gas8,963
 
 20,194
 
Realized gain (loss) on derivatives5,424
 485
 (1,322) (1,176)1,165
 (2,488) 4,435
 (6,746)
Unrealized (loss) gain on derivatives(21,337) (12,372) (9,492) 21,449
Unrealized gain (loss) on derivatives6,157
 1,429
 (39,562) 11,845
Total revenues$207,178
 $126,279
 $609,725
 $390,703
$241,704
 $211,367
 $415,593
 $402,547
Net Production Volumes:(1)
              
Oil (MBbl)(2)
2,973
 2,166
 8,061
 5,582
3,346
 2,706
 6,452
 5,088
Natural gas (Bcf)(3)
12.3
 10.2
 35.1
 27.6
13.4
 12.7
 27.1
 22.8
Total oil equivalent (MBOE)(4)
5,025
 3,860
 13,917
 10,190
5,577
 4,817
 10,972
 8,892
Average daily production (BOE/d)(5)
54,625
 41,954
 50,979
 37,325
61,290
 52,937
 60,619
 49,126
Average Sales Prices:              
Oil, without realized derivatives (per Bbl)$57.15
 $46.25
 $60.08
 $47.49
$56.51
 $61.44
 $53.20
 $61.80
Oil, with realized derivatives (per Bbl)$58.97
 $46.47
 $59.91
 $47.39
$56.86
 $60.52
 $53.91
 $60.46
Natural gas, without realized derivatives (per Mcf)$3.77
 $3.42
 $3.50
 $3.56
$1.64
 $3.38
 $2.25
 $3.35
Natural gas, with realized derivatives (per Mcf)$3.77
 $3.42
 $3.50
 $3.54
$1.64
 $3.38
 $2.25
 $3.36
_________________
(1)We report our production volumes in two streams: oil and natural gas, including both dry and liquids-rich natural gas. Revenues associated with NGLsnatural gas liquids are included with our natural gas revenues.
(2)One thousand barrels of oil.
(3)One billion cubic feet of natural gas.
(4)One thousand barrels of oil equivalent, estimated using a conversion ratio of one Bbl of oil per six Mcf of natural gas.
(5)Barrels of oil equivalent per day, estimated using a conversion ratio of one Bbl of oil per six Mcf of natural gas.
Three Months Ended SeptemberJune 30, 20182019 as Compared to Three Months Ended SeptemberJune 30, 20172018
Oil and natural gas revenues. Our oil and natural gas revenues increased $81.3 million to $216.3$2.0 million, or 60%1%, for the three months ended September 30, 2018, as compared to $134.9$211.1 million for the three months ended SeptemberJune 30, 2017.2019, as compared to $209.0 million for the three months ended June 30, 2018. Our oil revenues increased $69.8$22.8 million, or 70%14%, to $169.9189.1 million for the three months ended SeptemberJune 30, 20182019, as compared to $100.2166.3 million for the three months ended SeptemberJune 30, 20172018. The increase in oil revenues resulted from (i) a higher weighted average oil price realized for the three months ended September 30, 2018 of $57.15 per Bbl, as compared to $46.25 per Bbl realized for the three months ended September 30, 2017, and (ii) the 37%24% increase in our oil production to 3.03.3 million Bbl of oil for the three months ended SeptemberJune 30, 2018, or 32,317 Bbl of oil per day,2019, as compared to 2.22.7 million Bbl of oil or 23,538 Bbl of oil per day, for the three months ended SeptemberJune 30, 2017.2018. The increase in oil production was primarily attributable to our ongoing delineation and development drilling activities in the Delaware Basin. This increase was partially offset by a lower weighted average oil price realized for the three months ended June 30, 2019 of $56.51 per Bbl, a decrease of 8% as compared to $61.44 per Bbl realized for the three months ended June 30, 2018. Our natural gas revenues increaseddecreased by $11.6$20.8 million, or 33%49%, to $46.4$22.0 million for the three months ended SeptemberJune 30, 2018,2019, as compared to $34.8$42.7 million for the three months ended SeptemberJune 30, 2017.2018. The increasedecrease in natural gas revenues resulted from a 51% decrease in realized natural gas prices to $1.64 per Mcf for the 21%three months ended June 30, 2019, as compared to $3.38 per Mcf realized for the three months ended June 30, 2018. This decrease was partially offset by the 6% increase in our natural gas production to 12.313.4 Bcf for the three months ended SeptemberJune 30, 2018,2019, as compared to 10.212.7 Bcf for the three months ended SeptemberJune 30, 2017, and from the 10% increase in our realized natural gas prices between the two periods.2018. The increase in natural gas production was primarily attributable to our ongoing delineation and development drilling activities in the Delaware Basin.

Third-party midstream services revenues. Our third-party midstream services revenues increased $3.6 million to $6.8$11.0 million, or 112%, for the three months ended September 30, 2018, as comparedmore than four-fold, to $3.2$14.4 million for the three months ended SeptemberJune 30, 2017.2019, as compared to $3.4 million for the three months ended June 30, 2018. Third-party midstream services revenues are those revenues from midstream operations related to third parties, including working interest owners in our operated wells. This increase was primarily attributable to (i) an increase in our third-party salt water gathering and disposal revenues to approximately $3.3$6.3 million for the three months ended SeptemberJune 30, 2018,2019, as compared to approximately $0.4$1.9 million for the three months ended SeptemberJune 30, 2017.2018, and (ii) an increase in our third-party natural gas gathering, transportation and processing revenues to approximately $6.5 million for the three months ended June 30, 2019, as compared to $1.5 million for the three months ended June 30, 2018.
Sales of purchased natural gas. Our sales of purchased natural gas were $9.0 million for the three months ended June 30, 2019. We had no sales of purchased natural gas for the three months ended June 30, 2018. Sales of purchased natural gas primarily reflect those natural gas purchase transactions that we periodically enter into with third parties whereby we process the third party’s natural gas at the Black River cryogenic natural gas processing plant in Eddy County, New Mexico (the “Black River Processing Plant”) and then purchase, and subsequently sell, the residue gas and natural gas liquids (“NGL”) to other purchasers. These revenues, and the expenses related to these transactions included in “Purchased natural gas,” are presented on a gross basis in our interim unaudited condensed consolidated statement of operations.
Realized gain (loss) on derivatives. Our realized net gain on derivatives was $5.4$1.2 million for the three months ended SeptemberJune 30, 2018,2019, as compared to a realized net gainloss of $0.5$2.5 million for the three months ended SeptemberJune 30, 2017.2018. We realized a net lossgain of $10.2$1.2 million related to our oil costless collar contracts for the three months ended SeptemberJune 30, 2018, resulting from oil prices that were above the short call/ceiling prices of certain of our oil costless collar contracts. We realized a net gain of $15.6 million related to our oil basis swap contracts for the three months ended September 30, 2018, resulting from oil basis prices lower than the swap prices of certain of our oil basis swap contracts. We realized a net gain of $0.5 million from our oil derivative contracts for the three months ended September 30, 2017,2019, resulting from oil prices that were below the floor prices of certain of our oil costless collar contracts. We realized an average gain on our oil derivatives contracts of approximately $1.82$0.35 per Bbl produced during the three months ended SeptemberJune 30, 2018,2019, as compared to an average gainloss of approximately $0.22$0.92 per Bbl produced during the three months ended SeptemberJune 30, 2017.2018. Our total oil volumes hedged for the three months ended SeptemberJune 30, 20182019 represented 47%68% of our total oil production, as compared to 57%51% of our total oil production for the three months ended SeptemberJune 30, 2017.2018. Our total natural gas volumes hedged for the three months ended SeptemberJune 30, 20182019 represented 34%13% of our total natural gas production, as compared to 62%33% of our total natural gas production for the three months ended SeptemberJune 30, 2017.2018.
Unrealized lossgain (loss) on derivatives. Our unrealized net lossgain on derivatives was $21.3$6.2 million for the three months ended SeptemberJune 30, 2018,2019, as compared to an unrealized net lossgain of $12.4$1.4 million for the three months ended SeptemberJune 30, 2017.2018. During the three months ended SeptemberJune 30, 2019, the net fair value of our open oil and natural gas derivative contracts increased to a net asset of $10.3 million from a net asset of $4.1 million at March 31, 2019, resulting in an unrealized gain on derivatives of $6.2 million for the three months ended June 30, 2019. During the three months ended June 30, 2018, the net fair value of our open oil and natural gas derivative contracts decreasedincreased to a net liability of $24.7$3.4 million from a net liability of $3.4$4.8 million at June 30,March 31, 2018, resulting in an unrealized lossgain on derivatives of $21.3 million for the three months ended September 30, 2018. During the three months ended September 30, 2017, the net fair value of our open oil and natural gas derivative contracts decreased to a net liability of approximately $3.5 million from a net asset of $8.9 million at June 30, 2017, resulting in an unrealized loss on derivatives of $12.4$1.4 million for the three months ended SeptemberJune 30, 2017.2018.
NineSix Months Ended SeptemberJune 30, 20182019 as Compared to NineSix Months Ended SeptemberJune 30, 20172018
Oil and natural gas revenues. Our oil and natural gas revenues increased $243.7 million to $607.3$13.4 million, or 67%3%, to $404.3 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $363.6$391.0 million for the ninesix months ended SeptemberJune 30, 2017.2018. Our oil revenues increased $219.2$28.9 million, or 83%9%, to $484.3$343.3 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $265.1$314.4 million for the ninesix months ended SeptemberJune 30, 2017.2018. The increase in oil revenues resulted from (i) a higher weighted average oil price realized for the nine months ended September 30, 2018 of $60.08 per Bbl, as compared to $47.49 per Bbl realized for the nine months ended September 30, 2017, and (ii) the 44%27% increase in our oil production to 8.16.5 million Bbl of oil for the ninesix months ended SeptemberJune 30, 2018, or 29,529 Bbl of oil per day,2019, as compared to 5.65.1 million Bbl of oil or 20,447 Bbl of oil per day, for the ninesix months ended SeptemberJune 30, 2017.2018. The increase in oil production was primarily attributable to our ongoing delineation and development drilling activities in the Delaware Basin. This increase was partially offset by a lower weighted average oil price realized for the six months ended June 30, 2019 of $53.20 per Bbl, a decrease of 14% as compared to $61.80 per Bbl realized for the six months ended June 30, 2018. Our natural gas revenues increaseddecreased by $24.5$15.5 million, or 25%20%, to $122.9$61.0 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $98.5$76.5 million for the ninesix months ended SeptemberJune 30, 2017.2018. The increasedecrease in natural gas revenues resulted from the 27% increase in our natural gas production to 35.1 Bcf for the nine months ended September 30, 2018, as compared to 27.6 Bcf for the nine months ended September 30, 2017, which was partially offset by a slightly lower weighted average natural gas price realized for the ninesix months ended SeptemberJune 30, 20182019 of $3.50$2.25 per Mcf, a decrease of 33% as compared to $3.56$3.35 per Mcf realized for the ninesix months ended SeptemberJune 30, 2017.2018. This decrease was partially offset by the 19% increase in our natural gas production to 27.1 Bcf for the six months ended June 30, 2019, as compared to 22.8 Bcf for the six months ended June 30, 2018. The increase in natural gas production was primarily attributable to our ongoing delineation and development drilling activities in the Delaware Basin.
Third-party midstream services revenues. Our third-party midstream services revenues increased $6.4$19.7 million to $13.3$26.2 million, or 93%,just over four-fold, for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $6.9$6.5 million for the ninesix months ended SeptemberJune 30, 2017.2018. This increase was primarily attributable to (i) an increase in our third-party salt water gathering and disposal revenues to approximately $6.3$12.0 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to approximately $1.1$3.0 million for the ninesix months ended SeptemberJune 30, 2017,2018, and (ii) an increase in natural gas gathering, transportation and processing revenues to approximately $6.8$11.0 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $5.6$3.4 million for the ninesix months ended SeptemberJune 30, 2017, due to increased2018.
Sales of purchased natural gas. Our sales of purchased natural gas volumes being gathered and/or processed in our Rustler Breaks and Wolf asset areas.were $20.2 million for the six months ended June 30, 2019. We had no sales of purchased natural gas for the six months ended June 30, 2018.

Realized lossgain (loss) on derivatives. Our realized net lossgain on derivatives was $1.3$4.4 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to a realized net loss of $1.2$6.7 million for the ninesix months ended SeptemberJune 30, 2017.2018. We realized a net lossgain of $21.6$4.5 million related to our oil costless collar contracts for the ninesix months ended SeptemberJune 30, 2018,2019, resulting from oil prices that were abovebelow the short call/ceilingfloor prices of certain of our oil costless collar contracts. We realized a net gain of $20.3 million related to our oil basis swap contracts for the nine months ended September 30, 2018, resulting from oil basis prices lower than the swap prices of certain of our oil basis swap contracts. We realized net losses of $0.6$6.7 million from both our oil and natural gas

derivative contracts for the ninesix months ended SeptemberJune 30, 2017,2018, resulting from oil and natural gas prices that were above the ceiling prices of certain of our oil and natural gas costless collar contracts. We realized an average lossgain on our oil derivatives of approximately $0.17$0.70 per Bbl produced during the ninesix months ended SeptemberJune 30, 2018,2019, as compared to an average loss of $0.10$1.34 per Bbl produced during the ninesix months ended SeptemberJune 30, 2017.2018. Our total oil volumes hedged for the ninesix months ended SeptemberJune 30, 20182019 represented 50%57% of our total oil production, as compared to 61%53% of our total oil production for the ninesix months ended SeptemberJune 30, 2017.2018. Our total natural gas volumes hedged for the ninesix months ended SeptemberJune 30, 20182019 represented 36%13% of our total natural gas production, as compared to 64%37% of our total natural gas production for the ninesix months ended SeptemberJune 30, 2017.2018.
Unrealized (loss) gain on derivatives. Our unrealized net loss on derivatives was $9.5$39.6 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to an unrealized net gain of $21.4$11.8 million for the ninesix months ended SeptemberJune 30, 2017.2018. During the period from December 31, 20172018 through SeptemberJune 30, 2018,2019, the aggregate net fair value of our open oil and natural gas derivative contracts decreased to a net liabilityasset of approximately $24.7$10.3 million from a net liabilityasset of approximately $15.2$49.8 million, resulting in an unrealized loss on derivatives of approximately $9.5$39.6 million for the ninesix months ended SeptemberJune 30, 2018.2019. During the period from December 31, 20162017 through SeptemberJune 30, 2017,2018, the aggregate net fair value of our open oil and natural gas derivative contracts increased from a net liability of approximately $25.0$15.2 million to a net liability of approximately $3.5$3.4 million, resulting in an unrealized gain on derivatives of approximately $21.4$11.8 million for the ninesix months ended SeptemberJune 30, 2017.2018.














Expenses
The following table summarizes our unaudited operating expenses and other income (expense) for the periods indicated:
Three Months Ended 
 September 30,
 Nine Months Ended 
 September 30,
Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
(In thousands, except expenses per BOE)2018 2017 2018 20172019 2018 2019 2018
Expenses:              
Production taxes, transportation and processing$20,215
 $15,666
 $58,116
 $40,348
$21,542
 $20,110
 $41,207
 $37,901
Lease operating
22,531
 16,689
 69,685
 48,486
26,351
 25,006
 57,514
 47,154
Plant and other midstream services operating7,291
 3,096
 17,187
 8,379
8,422
 5,676
 17,738
 9,896
Purchased natural gas8,172
 
 18,806
 
Depletion, depreciation and amortization70,457
 47,800
 192,664
 123,066
80,132
 66,838
 156,999
 122,207
Accretion of asset retirement obligations387
 323
 1,126
 937
420
 375
 834
 739
General and administrative18,444
 16,156
 55,739
 49,671
19,876
 19,369
 38,166
 37,295
Total expenses139,325
 99,730
 394,517
 270,887
164,915
 137,374
 331,264
 255,192
Operating income67,853
 26,549
 215,208
 119,816
76,789
 73,993
 84,329
 147,355
Other income (expense):              
Net (loss) gain on asset sales and inventory impairment(196) 16
 (196) 23
Inventory impairment(368) 
 (368) 
Interest expense(10,340) (8,550) (26,835) (26,229)(18,068) (8,004) (35,997) (16,495)
Prepayment premium on extinguishment of debt(31,226) 
 (31,226) 
Other (expense) income(976) (36) (1,275) 1,956
Other expense(423) (352) (532) (299)
Total other expense(42,738) (8,570) (59,532) (24,250)(18,859) (8,356) (36,897) (16,794)
Net income25,115
 17,979
 155,676
 95,566
57,930
 65,637
 47,432
 130,561
Total income tax provision12,858
 
 11,845
 
Net income attributable to non-controlling interest in subsidiaries(7,321) (2,940) (18,182) (8,034)(8,320) (5,831) (15,782) (10,861)
Net income attributable to Matador Resources Company shareholders$17,794
 $15,039
 $137,494
 $87,532
$36,752
 $59,806
 $19,805
 $119,700
Expenses per BOE:              
Production taxes, transportation and processing$4.02
 $4.06
 $4.18
 $3.96
$3.86
 $4.17
 $3.76
 $4.26
Lease operating$4.48
 $4.32
 $5.01
 $4.76
$4.72
 $5.19
 $5.24
 $5.30
Plant and other midstream services operating$1.45
 $0.80
 $1.23
 $0.82
$1.51
 $1.18
 $1.62
 $1.11
Depletion, depreciation and amortization$14.02
 $12.38
 $13.84
 $12.08
$14.37
 $13.87
 $14.31
 $13.74
General and administrative$3.67
 $4.19
 $4.00
 $4.87
$3.56
 $4.02
 $3.48
 $4.19
Three Months Ended SeptemberJune 30, 20182019 as Compared to Three Months Ended SeptemberJune 30, 20172018
Production taxes, transportation and processing. Our production taxes, transportation and processing expenses increased $4.5 million to $20.2$1.4 million, or 29%7%, for the three months ended September 30, 2018, as compared to $15.7$21.5 million for the three months ended SeptemberJune 30, 2017.2019, as compared to $20.1 million for the three months ended June 30, 2018. The increase was primarily attributable to the $1.3 million increase in transportation and processing fees to $6.3 million for the three months ended June 30, 2019, as compared to $5.0 million for the three months ended June 30, 2018, principally due to the 6% increase in our natural gas production to 13.4 Bcf of natural gas for the three months ended June 30, 2019, as compared to 12.7 Bcf of natural gas for the three months ended June 30, 2018. On a unit-of-production basis, our production taxes, transportation and processing expenses decreased 1%7% to $4.02$3.86 per BOE for the three months ended SeptemberJune 30, 2018,2019, as compared to $4.06$4.17 per BOE for the three months ended SeptemberJune 30, 2017.2018. The increase in production taxes, transportation and processing expensesdecrease was primarily attributable to the $7.9 million increase in ourlower production taxes on a per unit basis as a result of the decrease in the weighted average oil and natural gas prices realized between the two periods.
Lease operating. Our lease operating expenses increased $1.3 million, or 5%, to $16.0$26.4 million for the three months ended SeptemberJune 30, 2018,2019, as compared to $8.1$25.0 million for the three months ended SeptemberJune 30, 2017, principally due2018. The increase was largely attributable to the $81.3increases in compression, repairs and maintenance and non-operated lease operating expenses of approximately $2.6 million increase in oil and natural gas revenues for the three months ended SeptemberJune 30, 2018,2019, as compared to the three months ended SeptemberJune 30, 2017. In addition, the production tax rates2018. This increase was partially offset by a decrease in New Mexico are higher than production tax rates in Texas. Assalt water trucking and disposal costs as more of our oil and natural gas production becomes attributableoperated wells have been connected to New Mexico, we expect our production tax expenses to increase proportionately.
Lease operating.salt water disposal pipelines. Our lease operating expenses increased $5.8 million to $22.5 million, or 35%, for the three months ended September 30, 2018, as compared to $16.7 million for the three months ended September 30, 2017. Ondecreased 9% on a unit-of-production basis our lease operating expenses increased 4% to $4.48$4.72 per BOE for the three months ended SeptemberJune 30, 2018,2019, as compared to $4.32$5.19 per BOE for the three months ended SeptemberJune 30, 2017. The2018, as a result of the 16% increase in lease operating expensestotal oil equivalent production for the three months ended SeptemberJune 30, 2018,2019, as compared to the three months ended SeptemberJune 30, 2017, was primarily attributable to an increase in costs of services and equipment related to the increased number of wells at September 30, 2018, as compared to September 30, 2017.2018.

Plant and other midstream services operating. Our plant and other midstream services operating expenses increased $4.2 million to $7.3$2.7 million, or an increase of 135%48%, to $8.4 million for the three months ended SeptemberJune 30, 2018,2019, as compared to $3.1$5.7 million for

the three months ended SeptemberJune 30, 2017.2018. This increase was primarily attributable to (i) increased expenses associated with the Black River Processing Plant of $3.1 million for the three months ended June 30, 2019, as compared to $1.9 million for the three months ended June 30, 2018, (ii) increased expenses associated with our expanded commercial salt water disposal operations to $3.7of $3.8 million for the three months ended SeptemberJune 30, 2019, as compared to $3.0 million for the three months ended June 30, 2018, as compared toand (iii) increased expenses associated with pipeline operations of $1.6 million for the three months ended SeptemberJune 30, 2017, and (ii) increased expenses associated with the Black River Processing Plant, which was expanded in the first quarter of 2018, to $1.7 million for the three months ended September 30, 2018,2019, as compared to $1.0 million for the three months ended SeptemberJune 30, 2017.2018.
Depletion, depreciation and amortization. Our depletion, depreciation and amortization expenses increased $22.7 million to $70.5$13.3 million, or 47%20%, for the three months ended September 30, 2018, as compared to $47.8$80.1 million for the three months ended SeptemberJune 30, 2017.2019, as compared to $66.8 million for the three months ended June 30, 2018. On a unit-of-production basis, our depletion, depreciation and amortization expenses increased 13%4% to $14.02$14.37 per BOE for the three months ended SeptemberJune 30, 2018,2019, as compared to $12.38$13.87 per BOE for the three months ended SeptemberJune 30, 2017.2018. The increase in our total depletion, depreciation and amortization expenses was primarily attributable to (i) increased well costs year-over-year in response to increased oil prices over the past year and (ii) the 30%16% increase in our total oil equivalent production to 5.05.6 million BOE for the three months ended SeptemberJune 30, 2018,2019, as compared to 3.94.8 million BOE for the three months ended SeptemberJune 30, 2017. The2018, and (ii) increased depreciation expenses attributable to our midstream segment of approximately $3.8 million for the three months ended June 30, 2019, as compared to $2.3 million for the three months ended June 30, 2018. On a unit-of-production basis, the impact of the increaseincreases in well coststotal oil equivalent production and oil and natural gas productionmidstream depreciation expenses was partiallylargely offset by higher total proved oil and natural gas reserves at SeptemberJune 30, 2018,2019, as compared to SeptemberJune 30, 2017,2018, primarily attributable to our ongoing delineation and development drilling activities in the Delaware Basin. In addition, depreciation
General and administrative. Our general and administrative expenses attributableincreased $0.5 million, or 3%, to our midstream segment were approximately $2.6$19.9 million for the three months ended SeptemberJune 30, 2018,2019, as compared to $1.3$19.4 million for the three months ended SeptemberJune 30, 2017.
General and administrative.2018. Our general and administrative expenses increased $2.3 million to $18.4 million, or 14%, for the three months ended September 30, 2018, as compared to $16.2 million for the three months ended September 30, 2017. The increase in our general and administrative expenses was primarily attributable to increased payroll and related expenses of $5.6 million, including approximately $3.5 million of non-cash stock-based compensation. These increases were partially offset by the $2.4 million increase in capitalized general and administrative expenses for the three months ended September 30, 2018, as compared to the three months ended September 30, 2017. As a result of the 30% increase in oil and natural gas production for the three months ended September 30, 2018, as compared to the three months ended September 30, 2017, our general and administrative expenses decreased 12%11% on a unit-of-production basis to $3.67$3.56 per BOE for the three months ended SeptemberJune 30, 2018,2019, as compared to $4.19$4.02 per BOE for the three months ended SeptemberJune 30, 2017.2018, primarily attributable to our ongoing delineation and development drilling activities in the Delaware Basin.
Interest expense. For the three months ended SeptemberJune 30, 2018,2019, we incurred total interest expense of approximately $12.1$20.7 million. We capitalized approximately $1.7$2.6 million of our interest expense on certain qualifying projects for the three months ended SeptemberJune 30, 20182019 and expensed the remaining $10.3$18.1 million to operations. For the three months ended SeptemberJune 30, 2017,2018, we incurred total interest expense of approximately $10.6 million. We capitalized approximately $2.1$2.6 million of our interest expense on certain qualifying projects for the three months ended SeptemberJune 30, 20172018 and expensed the remaining $8.6$8.0 million to operations.
Prepayment premium on extinguishmentTotal income tax provision. We recorded a total income tax expense of debt. Our prepayment premium on the extinguishment of debt$12.9 million for the three months ended SeptemberJune 30, 2019, which differs from amounts computed by applying the U.S. federal statutory rate to pre-tax income due primarily to the impact of permanent differences between book and tax income. Due to a variety of factors, including our significant net income in 2017 and 2018, our federal valuation allowance and a portion of our state valuation allowance were reversed at December 31, 2018, as the deferred tax assets were determined to be more likely than not to be utilized. As a portion of our state net operating loss carryforwards are not expected to be utilized before expiration, a valuation allowance will continue to be recognized until the state deferred tax assets are more likely than not to be utilized. At June 30, 2018, was $31.2 million due to the 2023 Notes Tender Offer and Redemption, including total payments of $30.4 million to holders of the 2023 Notes as a result of the tender premium and the required 105.156% redemption price payable pursuant to the 2023 Notes indenture.
Total income tax benefit. Ourour deferred tax assets exceeded our deferred tax liabilities at September 30, 2018 due to the deferred tax amounts generated by full-cost ceiling impairment charges recorded in prior periods. As a result, we established a valuation allowance against the deferred tax assets beginning in the third quarter of 2015. We retained a full valuation allowance at SeptemberJune 30, 2018 due to uncertainties regarding the future realization of our deferred tax assets. Should we continue to generate net income, we anticipate the reversal of a portion of the deferred tax asset valuation allowance in a future period.
NineSix Months Ended SeptemberJune 30, 20182019 as Compared to NineSix Months Ended SeptemberJune 30, 20172018
Production taxes, transportation and processing. Our production taxes, transportation and processing expenses increased $17.8 million to $58.1$3.3 million, or 44%9%, to $41.2 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $40.3$37.9 million for the ninesix months ended SeptemberJune 30, 2017. On a unit-of-production basis, our production taxes, transportation and processing expenses increased 6% to $4.18 per BOE for the nine months ended September 30, 2018, as compared to $3.96 per BOE for the nine months ended September 30, 2017.2018. The increase in production taxes, transportation and processing expenses was primarily attributable to the $22.0$2.8 million increase in our production taxes to $44.2 milliontransportation and processing expenses for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $22.2 million for the ninesix months ended SeptemberJune 30, 2017,2018, principally due to the $243.7 million19% increase in our natural gas production to 27.1 billion Bcf of natural gas for the six months ended June 30, 2019, as compared to 22.8 billion Bcf of natural gas for the six months ended June 30, 2018. On a unit-of-production basis, our production taxes, transportation and processing expenses decreased 12% to $3.76 per BOE for the six months ended June 30, 2019, as compared to $4.26 per BOE for the six months ended June 30, 2018. The decrease was primarily attributable to lower production taxes on a per unit basis as a result of the decrease in weighted average oil and natural gas revenues forprices realized between the nine months ended September 30, 2018, as compared to the nine months ended September 30, 2017. In addition, the production tax rates in New Mexico are higher than production tax rates in Texas. As more of our oil and natural gas production becomes attributable to New Mexico, we expect our production tax expenses to increase proportionately.two periods.
Lease operating. Our lease operating expenses increased $21.2 million to $69.7$10.4 million, or 44%22%, to $57.5 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $48.5$47.2 million for the ninesix months ended SeptemberJune 30, 2017. Our lease operating expenses on a unit-of production basis increased 5% to $5.01 per BOE for the nine months ended September 30, 2018, as compared to $4.76

per BOE for the nine months ended September 30, 2017.2018. The increase in lease operating expenses for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to the ninesix months ended SeptemberJune 30, 2017,2018, was primarily attributable to an increase in costs of services and equipment, including salt water disposal costs in asset areas other than Wolf and Rustler Breaks (which are

serviced by San Mateo), at September. Our lease operating expenses on a unit-of production basis decreased 1% to $5.24 per BOE for the six months ended June 30, 2018,2019, as compared to September$5.30 per BOE for the six months ended June 30, 2017.2018.
Plant and other midstream services operating. Our plant and other midstream services operating expenses increased $8.8 million to $17.2$7.8 million, or 105%79%, to $17.7 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $8.4$9.9 million for the ninesix months ended SeptemberJune 30, 2017.2018. This increase was primarily attributable to (i) increased expenses associated with our expanded commercial salt water disposal operations to $8.8of $8.1 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $4.7$5.2 million for the ninesix months ended SeptemberJune 30, 2017, and2018, (ii) increased expenses associated with the Black River Processing Plant, which was expanded late in the first quarter of 2018, to $5.3of $6.1 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $2.8$3.6 million for the ninesix months ended SeptemberJune 30, 2017.2018, and (iii) increased expenses associated with pipeline operations of $3.7 million for the six months ended June 30, 2019, as compared to $1.6 million for the six months ended June 30, 2018.
Depletion, depreciation and amortization. Our depletion, depreciation and amortization expenses increased $69.6 million to $192.7$34.8 million, or 57%28%, to $157.0 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $123.1$122.2 million for the ninesix months ended SeptemberJune 30, 2017.2018. On a unit-of-production basis, our depletion, depreciation and amortization expenses increased 15%4% to $13.84$14.31 per BOE for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $12.08$13.74 per BOE for the ninesix months ended SeptemberJune 30, 2017.2018. The increase in our total depletion, depreciation and amortization expenses was primarily attributable to (i) increased well costs in response to increased oil prices over the past year and (ii) the 37%23% increase in our total oil equivalent production to 13.911.0 million BOE for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to 10.28.9 million BOE for the ninesix months ended SeptemberJune 30, 2017. The2018, and (ii) the increase in depreciation expenses attributable to our midstream segment of approximately $9.3 million for the six months ended June 30, 2019, as compared to $5.2 million for the six months ended June 30, 2018. On a unit-of-production basis, the impact of the increaseincreases in well coststotal oil equivalent production and oil and natural gas productionmidstream depreciation expenses was partiallylargely offset by higher total proved oil and natural gas reserves at SeptemberJune 30, 2018,2019, as compared to SeptemberJune 30, 2017,2018, primarily attributable to our ongoing delineation and development drilling activities in the Delaware Basin. In addition, depreciation expenses attributable to our midstream segment were approximately $6.5 million for the nine months ended September 30, 2018, as compared to $3.8 million for the nine months ended September 30, 2017.
General and administrative. Our general and administrative expenses increased $6.1 million to $55.7$0.9 million, or 12%2%, to $38.2 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $49.7$37.3 million for the ninesix months ended SeptemberJune 30, 2017. The increase in our general and administrative expenses was partially attributable to increased payroll and related expenses of approximately $9.4 million associated with additional employees joining the Company to support our increased land, geoscience, drilling, completion, production, midstream, accounting and administration functions2018. Primarily as a result of our continued growth. These increases were partially offset by the $5.7 million23% increase in capitalized general and administrative expensestotal oil equivalent production for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to the ninesix months ended SeptemberJune 30, 2017. As a result of the 37% increase in oil and natural gas production for the nine months ended September 30, 2018, as compared to the nine months ended September 30, 2017, our general and administrative expenses decreased 18%17% on a unit-of-production basis to $4.00$3.48 per BOE for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $4.87$4.19 per BOE for the ninesix months ended SeptemberJune 30, 2017.2018.
Interest expense. For the ninesix months ended SeptemberJune 30, 2018,2019, we incurred total interest expense of approximately $33.0$40.2 million. We capitalized approximately $6.2$4.2 million of our interest expense on certain qualifying projects for the ninesix months ended SeptemberJune 30, 20182019 and expensed the remaining $26.8$36.0 million to operations. For the ninesix months ended SeptemberJune 30, 2017,2018, we incurred total interest expense of approximately $31.5$21.0 million. We capitalized approximately $5.2$4.5 million of our interest expense on certain qualifying projects for the ninesix months ended SeptemberJune 30, 20172018 and expensed the remaining $26.2$16.5 million to operations.
Prepayment premium on extinguishmentTotal income tax provision. We recorded a total income tax expense of debt. Our prepayment premium on the extinguishment of debt$11.8 million for the ninesix months ended SeptemberJune 30, 2018 was $31.2 million2019, which differs from amounts computed by applying the U.S. federal statutory rate to pre-tax income primarily due to the 2023 Notes Tender Offerimpact of permanent differences between book and Redemption,tax income. Due to a variety of factors, including total paymentsour significant net income in 2017 and 2018, our federal valuation allowance and a portion of $30.4 millionour state valuation allowance were reversed at December 31, 2018, as the deferred tax assets were determined to holdersbe more likely than not to be utilized. As a portion of our state net operating loss carryforwards are not expected to be utilized before expiration, a valuation allowance will continue to be recognized until the 2023 Notes as a result of the tender premium and the required 105.156% redemption price payable pursuantstate deferred tax assets are more likely than not to the 2023 Notes indenture.
Total income tax benefit. Ourbe utilized. At June 30, 2018, our deferred tax assets exceeded our deferred tax liabilities at September 30, 2018 due to the deferred tax amounts generated by the full-cost ceiling impairment charges recorded in prior periods. As a result, we established a valuation allowance against the deferred tax assets beginning in the third quarter of 2015. We retained a full valuation allowance at SeptemberJune 30, 2018 due to uncertainties regarding the future realization of our deferred tax assets. Should we continue to generate net income, we anticipate the reversal of a portion of the deferred tax asset valuation allowance in a future period.

Liquidity and Capital Resources
Our primary use of capital has been, and we expect will continue to be during the remainder of 20182019 and for the foreseeable future, for the acquisition, exploration and development of oil and natural gas properties and for midstream investments. Excluding any possible significant acquisitions, we expect to fund our capital expenditure requirements for the remainder of 2018 and for 2019 through a combination of cash on hand, operating cash flows, andperformance incentives in connection with the formation of San Mateo I that were received in the first quarter of 2019, borrowings under the Credit Agreement (assuming availability under our borrowing base). and borrowings under the San Mateo Credit Facility. We continually evaluate other capital sources, including borrowings under additional credit arrangements, the sale or joint venture of midstream assets or oil and natural gas producing assets or acreage,leasehold interests, particularly in our non-core asset areas, the sale or joint venture of oil and natural gas mineral interests, as well as potential issuances of equity, debt or convertible securities, none of which may be available on satisfactory terms or at all. Our future success in growing proved reserves and production will be highly dependent on our ability to access outside sources of capital and to generate operating cash flows.
As ofAt June 30, 2018,2019 and July 31, 2019, we had $575.0 million(i) $1.05 billion of outstanding 2023 Notes with a coupon of 6.875%. On August 21, 2018, we issued $750.0 million of Original5.875% senior notes due 2026 Notes with a coupon of 5.875% in a private placement. The Original 2026 Notes were issued at par value, and we received net proceeds of approximately $740.0 million, after deducting the initial purchasers’ discounts and estimated offering expenses. In conjunction with the 2026 Notes Offering, in August and September 2018, we completed the 2023 Notes Tender Offer and Redemption of all of our $575.0 million aggregate principal amount of 2023 Notes. We used a portion of the net proceeds from the 2026 Notes Offering to fund the 2023 Notes Tender Offer and Redemption.
On September 12, 2018, we announced the successful acquisition of 8,400 gross (8,400 net) leasehold acres in Lea and Eddy Counties, New Mexico for approximately $387 million, or a weighted average cost of approximately $46,000 per net acre, in the Bureau of Land Management New Mexico Oil and Gas Lease Sale on September 5 and 6, 2018 (the “BLM Acquisition”“Notes”). We completed the BLM Acquisition on September 20, 2018, and we expect the leases will be issued to us in the fourth quarter of 2018. We financed the BLM Acquisition using cash on hand and borrowings under the Credit Agreement.
At September 30, 2018, we had $750.0 million of outstanding Original 2026 Notes, $325.0, (ii) $205.0 million in borrowings outstanding under the Credit Agreement and (iii) approximately $3.0$13.6 million in outstanding

letters of credit issued pursuant to the Credit Agreement, and San Mateo I had $240.0 million in borrowings outstanding under the San Mateo Credit Facility and approximately $16.2 million in outstanding letters of credit issued pursuant to the San Mateo Credit Agreement. Facility.
At SeptemberJune 30, 2018,2019, we also had cash totaling approximately $45.9$60.0 million and restricted cash, totaling approximately $7.1 million, most of which iswas associated with San Mateo.Mateo, totaling approximately $24.8 million. By contractual agreement, the cash in the accounts held by our less-than-wholly-owned subsidiaries is not to be commingled with our other cash and is to be used only to fund the capital expenditures and operations of these less-than-wholly-owned subsidiaries.
On October 4, 2018, we issued $300.0 million of Additional 2026 Notes. The Additional 2026 Notes were issued pursuant to, and are governed by, the same Indenture governing the Original 2026 Notes. The Additional 2026 Notes were issued at 100.5% of par, plus accrued interest from August 21, 2018. We received net proceeds from this offering of approximately $297.6 million, after deducting the initial purchasers’ discounts and estimated offering expenses but excluding accrued interest from August 21, 2018 paid by the initial purchasers of the Additional 2026 Notes. The proceeds from this offering were used to repay a portion of the $325.0 million in outstanding borrowings under the Credit Agreement, which were incurred in connection with the BLM Acquisition. The Notes will mature September 15, 2026, and interest is payable on the Notes semi-annually in arrears on each March 15 and September 15.
At October 31, 2018, we had $1.05 billion of outstanding Notes, $25.0 million in borrowings outstanding under the Credit Agreement and approximately $3.0 million in outstanding letters of credit issued pursuant to the Credit Agreement.
In October 2018,April 2019, the lenders under our Credit Agreement, led by Royal Bank of Canada, completed their review of our proved oil and natural gas reserves at June 30, 2018. In connection with such review, we amended the Credit Agreement to, among other items, increase the maximum facility amount to $1.5 billion, increaseDecember 31, 2018, and as a result, the borrowing base was increased to $850.0$900.0 million increasewith the elected borrowing commitment toremaining at $500.0 million, extend the maturity to October 31, 2023 and reduce borrowing rates by 0.25% per annum.million. This October 2018April 2019 redetermination constituted the regularly scheduled NovemberMay 1 redetermination. Borrowings under the Credit Agreement are limited to the lowest of the borrowing base, the maximum facility amount and the elected borrowing commitment.
In June 2019, the lender commitments under the San Mateo Credit Facility, led by The Bank of Nova Scotia, were increased to $325.0 million, using the accordion feature. The San Mateo Credit Facility is guaranteed by San Mateo I’s subsidiaries, secured by substantially all of San Mateo I’s assets, including real property, and is non-recourse with respect to Matador and its wholly-owned subsidiaries, as well as San Mateo II.
During the thirdsecond quarter of 2018,2019, we continued our focus on the exploration, delineation and development of our Delaware Basin acreage in Loving County, Texas and Lea and Eddy Counties, New Mexico. We began 20182019 operating six drilling rigs in the Delaware Basin and continued to do so through Septemberat June 30, 2018. We expect to operate those2019. During the second quarter, these six operated drilling rigs in thewere deployed across our Delaware Basin through the remainder of 2018, including three rigs in the Rustler Breaks asset area, one rig in the Wolf/Jackson Trust asset areas, one rig in the Ranger/Arrowhead and Twin Lakes asset areas and one rig inbut with an increased focus on the Antelope Ridge asset area. We have continued to build significant optionality into our drilling program. Three of our rigs operate on longer-term contracts with remaining average terms between 12 and 15 months. The other three rigs are on short-term contracts with remaining obligations of six months or less. This affords us the ability to modify our drilling program as management may determine necessary based on changing commodity prices and other factors.

Effective October 1, 2018, we added a seventh operated drilling rig to our drilling program on a short-term contract. This seventh drilling rig was deployed initially in South Texas to drill up to ten wells, primarily in the Eagle Ford shale. This rig is expected to operate in South Texas throughout the fourth quarter of 2018 and into early 2019. At that time, subject to commodity prices and other economic circumstances, we anticipate moving this rig to the Delaware Basin, most likely to either the Arrowhead or Antelope Ridge asset area. We then expect to operate this seventh rigsix rigs in the Delaware Basin throughout the remainder of 2019, with four rigs operating between the Rustler Breaks and Antelope Ridge asset areas, one rig operating in the Wolf and Jackson Trust asset areas and one rig operating in the Arrowhead, Ranger and Twin Lakes asset areas, although this rig, in particular, is expected to operate in the Greater Stebbins Area for most of the remainder of 2019. We expect that development of our Delaware Basin assets will be the primary focus of our operations and capital expenditures for the remainder of 2019.
On August 1,During the second quarter of 2019, we also finished our nine-well program in South Texas, which we began in October 2018, including eight Eagle Ford shale wells and one Austin Chalk well. The rig used to drill these nine wells was released in early February 2019, and we adjustedhave no additional operated drilling activities planned in the Eagle Ford shale for the remainder of 2019.
2019 Capital Expenditure Budget
At July 31, 2019, our anticipated 20182019 estimated capital expenditures for drilling, completing and completions (including equipping wells for production) from $530(“D/C/E”) remained $640 to $570$680 million, to $620 to $650 millionas originally estimated. As a result of improved drilling and completion and capital efficiencies, an accelerated pace of activity and our expectations for acquiring additional working interests primarily through acreage trades in certain of our operated wells throughout 2019, we now expect to complete and turn to sales four gross (6.8 net) additional operated wells in 2019, as compared to our original 2019 plan, which includes four gross (3.0 net) additional wells resulting from an accelerated pace of drilling and completion activity in 2019 and 3.8 net additional wells attributable to increased working interests acquired or anticipated to be acquired in certain operated wells during the course of the year. Due to the lower well costs and facilities savings achieved thus far in 2019, however, at July 31, 2019, we anticipate we should be able to deliver these additional well completions within our originally budgeted estimates for D/C/E capital expenditures of $640 to $680 million. In addition, at July 31, 2019, we have no plans to add a seventh rig to our 2019 drilling program.
On July 31, 2019, we increased our anticipated 2019 midstream capital expenditures remainedfrom $55 to $75 million to $70 to $90 million, which primarily representsfor capital expenditures necessary to accommodate new customers and increased commitments from existing customers. During the first six months of 2019, San Mateo received an increased natural gas gathering and processing commitment from an existing natural gas customer and obtained a significant additional acreage dedication and a salt water disposal well permit from an existing salt water customer. In addition, San Mateo is in negotiations with other third parties to provide oil, natural gas and salt water gathering services, natural gas processing services and salt water disposal services. In order to provide the midstream services under these executed and anticipated agreements, San Mateo expects to undertake additional projects that will require added compression, oil, natural gas and water gathering lines and water disposal infrastructure not originally budgeted for in 2019. At July 31, 2019, San Mateo had also entered into an agreement to acquire an existing commercial salt water disposal well and facility, a salt water disposal permit and surface acreage near the Greater Stebbins Area. The anticipated total 2019 midstream capital expenditures of $70 to $90 million reflect our 51%proportionate share of San Mateo’s 2018 estimated 2019 capital expenditures. With the additionexpenditures and also account for portions of the seventh drilling rig deployed$50 million capital carry that Five Point agreed to South Texas on October 1, 2018, we increased our anticipated 2018 capital expenditures for drilling and completions (including equipping wells for production) by approximately 4%, or $25provide to $30 million, to $645 to $680 million. We have allocated substantiallyus in conjunction with the formation of San Mateo II.

Substantially all of our remaining 2019 estimated 2018 capital expenditures will be allocated to (i) the further delineation and development of our growing leasehold position, and(ii) the continued construction of midstream assets and (iii) our participation in certain non-operated well opportunities in the Delaware Basin, with the exception of the South Texas drilling program beginning in the fourth quarter of 2018 and amounts allocated to limited operations in our South Texas and Haynesville shale positions to maintain and extend leases and to participate in certain non-operated activitieswell opportunities. To narrow any potential difference between our 2019 capital expenditures and operating cash flows, we may divest portions of our non-core assets, particularly in our South Texas and Haynesville shale positions, as well as consider monetizing other assets, such as certain mineral, royalty and midstream interests, as value-creating opportunities arise. For example, in the Eagle Fordsecond quarter and early in the third quarter of 2019, we successfully closed and received approximately $22 million in proceeds attributable to the sale of portions of our properties, primarily in our South Texas and Haynesville shales. Forshale positions, as well as a small portion of our leasehold in a non-operated area of the remainderDelaware Basin. We intend to continue evaluating the opportunistic acquisition of 2018, ouracreage and mineral interests, principally in the Delaware Basin, drilling program will continue to focusduring 2019. These monetizations, divestitures and expenditures are opportunity-specific, and purchase price multiples and per-acre prices can vary significantly based on the developmentasset or prospect. As a result, it is difficult to estimate these 2019 monetizations, divestitures and capital expenditures with any degree of the Wolfcertainty; therefore, we have not provided estimated proceeds related to monetizations or divestitures or estimated capital expenditures related to acreage and Rustler Breaks asset areas and the further delineation and development of the Jackson Trust, Ranger/Arrowhead, Antelope Ridge and Twin Lakes asset areas, although we may also continue to delineate previously untested zones in the Wolf and Rustler Breaks asset areas.mineral acquisitions for 2019.
Our 20182019 capital expenditures may be adjusted as business conditions warrant and the amount, timing and allocation of such expenditures is largely discretionary and within our control. The aggregate amount of capital we will expend may fluctuate materially based on market conditions, the actual costs to drill, complete and place on production operated or non-operated wells, our drilling results, the actual costs and scope of our midstream activities, the ability of our joint venture partners to meet their capital obligations, other opportunities that may become available to us and our ability to obtain capital. When oil or natural gas prices decline, or costs increase significantly, we have the flexibility to defer a significant portion of our capital expenditures until later periods to conserve cash or to focus on projects that we believe have the highest expected returns and potential to generate near-term cash flows. We routinely monitor and adjust our capital expenditures in response to changes in prices, availability of financing, drilling, completion and acquisition costs, industry conditions, the timing of regulatory approvals, the availability of rigs, success or lack of success in our exploration and development activities, contractual obligations, drilling plans for properties we do not operate and other factors both within and outside our control. In addition, we attempt to avoid long-term service agreements where possible to minimize ongoing future commitments.
Exploration and development activities are subject to a number of risks and uncertainties, which could cause these activities to be less successful than we anticipate. A significant portion of our anticipated cash flows from operations for the remainder of 20182019 is expected to come from producing wells and development activities on currently proved properties in the Wolfcamp and Bone Spring plays in the Delaware Basin, the Eagle Ford shale in South Texas and the Haynesville shale in Louisiana. Our existing wells may not produce at the levels we have forecasted and our exploration and development activities in these areas may not be as successful as we anticipate. Additionally, our anticipated cash flows from operations are based upon current expectations of realized oil, natural gas and NGL prices for the remainder of 20182019 and the hedges we currently have in place. For further discussion of our expectations of such commodity prices, see “— General Outlook and Trends” below. We use commodity derivative financial instruments at times to mitigate our exposure to fluctuations in oil, natural gas and NGL prices and to partially offset reductions in our cash flows from operations resulting from declines in commodity prices. See Note 78 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for a summary of our open derivative financial instruments at SeptemberJune 30, 2018.2019.
Our unaudited cash flows for the ninesix months ended SeptemberJune 30, 20182019 and 20172018 are presented below:
Nine Months Ended 
 September 30,
Six Months Ended 
 June 30,
(In thousands)2018 20172019 2018
Net cash provided by operating activities$419,318
 $222,516
$194,497
 $254,208
Net cash used in investing activities(1,220,528) (596,853)(394,694) (493,562)
Net cash provided by financing activities751,736
 191,117
200,975
 280,385
Net change in cash and restricted cash$(49,474) $(183,220)$778
 $41,031
Adjusted EBITDA attributable to Matador Resources Company shareholders(1)
$409,984
 $227,444
$268,943
 $254,592
__________________
(1)Adjusted EBITDA is a non-GAAP financial measure. For a definition of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to our net income (loss) and net cash provided by operating activities, see “— Non-GAAP Financial Measures” below.

Cash Flows Provided by Operating Activities
Net cash provided by operating activities increased $196.8decreased $59.7 million to $419.3$194.5 million for the ninesix months ended SeptemberJune 30, 20182019 from $222.5$254.2 million for the ninesix months ended SeptemberJune 30, 2017.2018. Excluding changes in operating assets and liabilities, net

cash provided by operating activities increased to $405.0$255.5 million for the ninesix months ended SeptemberJune 30, 20182019 from $210.7$251.0 million for the ninesix months ended SeptemberJune 30, 2017. This increase was2018, primarily attributable to higherthe increase in our total oil equivalent production, which was partially offset by the decrease in realized oil and natural gas production and higher oil prices.prices between the two periods. Changes in our operating assets and liabilities between the two periods resulted in a net increasedecrease of approximately $2.5$64.2 million in net cash provided by operating activities for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to the ninesix months ended SeptemberJune 30, 2017.2018.
Our operating cash flows are sensitive to a number of variables, including changes in our production and volatility of oil and natural gas prices between reporting periods. Regional and worldwide economic activity, the actions of OPEC,the Organization of Petroleum Exporting Countries (OPEC), weather, infrastructure capacity to reach markets and other variable factors significantly impact the prices of oil and natural gas. These factors are beyond our control and are difficult to predict. We use commodity derivative financial instruments to mitigate our exposure to fluctuations in oil, natural gas and NGL prices. In addition, we attempt to avoid long-term service agreements where possible in order to minimize ongoing future commitments.
Cash Flows Used in Investing Activities
Net cash used in investing activities increaseddecreased by $623.7$98.9 million to $1.221 billion for the nine months ended September 30, 2018 from $596.9$394.7 million for the ninesix months ended SeptemberJune 30, 2017.2019 from $493.6 million for the six months ended June 30, 2018. This increasedecrease in net cash used in investing activities is primarily due in part to an increasea decrease of $589.3$71.7 million in oil and natural gas properties capital expenditures for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to the ninesix months ended SeptemberJune 30, 2017.2018. Cash used for oil and natural gas properties capital expenditures for the ninesix months ended SeptemberJune 30, 20182019 was attributable to the acquisition of additional leasehold and mineral interests including, primarily the BLM Acquisition, andattributable to our operated and non-operated drilling and completion activities in the Delaware Basin.Basin and in South Texas. The remaining increasedecrease in net cash used in investing activities was primarily attributable to an increasea decrease in cash used for midstream and other property and equipmentcapital expenditures of $41.7$14.2 million, primarily related to capital expenditures for San Mateo, which was partially offset by a netand an increase of $7.3$13.9 million in proceeds from the sale of acreage.assets.
Cash Flows Provided by Financing Activities
Net cash provided by financing activities increaseddecreased by $560.6$79.4 million to $751.7$201.0 million for the ninesix months ended SeptemberJune 30, 20182019 from $191.1$280.4 million for the ninesix months ended SeptemberJune 30, 2017. During the nine months ended September 30, 2018, we received2018. This decrease in net proceeds of $226.5 million from our May 2018 public equity offering, had borrowings under our credit agreement of $370.0 million, receivedcash provided by financing activities is due in part to a net proceeds from the 2026 Notes Offering of $740.5 million and had an increase of $44.1 million in contributions from non-controlling interest owners in less-than-wholly-owned subsidiaries. These increases were offset by the repayment of the $45.0 million in borrowings under our Credit Agreement of $165.0 million between the purchasetwo periods, offset by a reduction in proceeds from the issuance of our 2023 Notes for $605.8common stock of $226.6 million and a decrease of $156.8$34.1 million in contributions related to the formation of San Mateo and an increase of $11.8 million in distributions tofrom non-controlling interest owners in less-than-wholly-owned subsidiaries.
Non-GAAP Financial Measures
We define Adjusted EBITDA as earnings before interest expense, income taxes, depletion, depreciation and amortization, accretion of asset retirement obligations, property impairments, unrealized derivative gains and losses, certain other non-cash items and non-cash stock-based compensation expense, and net gain or loss on asset sales and inventory impairment. Adjusted EBITDA is not a measure of net income (loss) or cash flows as determined by GAAP. Adjusted EBITDA is a supplemental non-GAAP financial measure that is used by management and external users of our consolidated financial statements, such as industry analysts, investors, lenders and rating agencies.
Management believes Adjusted EBITDA is necessary because it allows us to evaluate our operating performance and compare the results of operations from period to period without regard to our financing methods or capital structure. We exclude the items listed above from net income (loss) in calculating Adjusted EBITDA because these amounts can vary substantially from company to company within our industry depending upon accounting methods and book values of assets, capital structures and the method by which certain assets were acquired.
Adjusted EBITDA should not be considered an alternative to, or more meaningful than, net income (loss) or cash flows from operating activities as determined in accordance with GAAP or as a primary indicator of our operating performance or liquidity. Certain items excluded from Adjusted EBITDA are significant components of understanding and assessing a company’s financial performance, such as a company’s cost of capital and tax structure. Our Adjusted EBITDA may not be comparable to similarly titled measures of another company because all companies may not calculate Adjusted EBITDA in the same manner.

The following table presents our calculation of Adjusted EBITDA and the reconciliation of Adjusted EBITDA to the GAAP financial measures of net income and net cash provided by operating activities, respectively.
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
(In thousands)2018 2017 2018 20172019 2018 2019 2018
Unaudited Adjusted EBITDA Reconciliation to Net Income:              
Net income attributable to Matador Resources Company shareholders$17,794
 $15,039
 $137,494
 $87,532
$36,752
 $59,806
 $19,805
 $119,700
Net income attributable to non-controlling interest in subsidiaries7,321
 2,940
 18,182
 8,034
8,320
 5,831
 15,782
 10,861
Net income25,115
 17,979
 155,676
 95,566
45,072
 65,637
 35,587
 130,561
Interest expense10,340
 8,550
 26,835
 26,229
18,068
 8,004
 35,997
 16,495
Total income tax provision12,858
 
 11,845
 
Depletion, depreciation and amortization70,457
 47,800
 192,664
 123,066
80,132
 66,838
 156,999
 122,207
Accretion of asset retirement obligations387
 323
 1,126
 937
420
 375
 834
 739
Unrealized loss (gain) on derivatives21,337
 12,372
 9,492
 (21,449)
Unrealized (gain) loss on derivatives(6,157) (1,429) 39,562
 (11,845)
Stock-based compensation expense4,842
 1,296
 13,787
 12,488
4,490
 4,766
 9,076
 8,945
Net loss (gain) on asset sales and inventory impairment196
 (16) 196
 (23)
Prepayment premium on extinguishment of debt31,226
 
 31,226
 
Inventory impairment368
 
 368
 
Consolidated Adjusted EBITDA163,900

88,304

431,002

236,814
155,251

144,191

290,268

267,102
Adjusted EBITDA attributable to non-controlling interest in subsidiaries(8,508) (3,471) (21,018) (9,370)(11,147) (6,853) (21,325) (12,510)
Adjusted EBITDA attributable to Matador Resources Company shareholders$155,392
 $84,833
 $409,984
 $227,444
$144,104
 $137,338
 $268,943
 $254,592
Three Months Ended September 30, Nine Months Ended September 30,Three Months Ended 
 June 30,
 Six Months Ended 
 June 30,
(In thousands)2018 2017 2018 20172019 2018 2019 2018
Unaudited Adjusted EBITDA Reconciliation to Net Cash Provided by Operating Activities:              
Net cash provided by operating activities$165,111
 $101,274
 $419,318
 $222,516
$135,257
 $118,059
 $194,497
 $254,208
Net change in operating assets and liabilities(11,111) (21,481) (14,300) (11,828)2,472
 18,174
 60,963
 (3,190)
Interest expense, net of non-cash portion9,900
 8,511
 25,984
 26,126
17,522
 7,958
 34,808
 16,084
Adjusted EBITDA attributable to non-controlling interest in subsidiaries(8,508) (3,471) (21,018) (9,370)(11,147) (6,853) (21,325) (12,510)
Adjusted EBITDA attributable to Matador Resources Company shareholders$155,392
 $84,833
 $409,984
 $227,444
$144,104
 $137,338
 $268,943
 $254,592
Net income attributable to Matador Resources Company shareholders increaseddecreased by $2.8$23.1 million to $17.8$36.8 million for the three months ended SeptemberJune 30, 2018,2019, as compared to $15.0$59.8 million for the three months ended SeptemberJune 30, 2017.2018. This increasedecrease in net income attributable to Matador Resources Company shareholders for the three months ended September 30, 2018 as compared to the three months ended September 30, 2017 is primarily attributable to the increase in oil and natural gas revenues of $81.3 million, which was offset by(i) a $9.0$13.3 million increase in unrealized loss on derivatives,depletion, depreciation and amortization expenses, (ii) a $39.6$10.1 million increase in total expensesinterest expense and (iii) a $12.9 million increase in the $31.2deferred income tax provision between the two periods. This decrease was partially offset by an increase of $3.7 million from realized loss to realized gain on derivatives and an increase of $4.7 million in prepayment premiumunrealized gain on extinguishment of debt.derivatives.
Net income attributable to Matador Resources Company shareholders increaseddecreased by $50.0$99.9 million to $137.5$19.8 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $87.5$119.7 million for the ninesix months ended SeptemberJune 30, 2017.2018. This increasedecrease in net income attributable to Matador Resources Company shareholders for the nine months ended September 30, 2018 as compared to the nine months ended September 30, 2017 is primarily attributable to (i) a $51.4 million decrease from unrealized gain to unrealized loss on derivatives, (ii) a $34.8 million increase in depletion, depreciation and amortization expenses, (iii) a $19.5 million increase in interest expense and (iv) an $11.8 million increase in the deferred income tax provision between the two periods. This decrease was partially offset by an increase of $11.2 million from realized loss to realized gain on derivatives, a $13.4 million increase in oil and natural gas revenues and an increase of $243.7 million, which was offset by a $30.9 million decrease in unrealized gain on derivatives, a $123.6 million increase in total expenses and the $31.2$19.7 million in prepayment premium on extinguishment of debt.third-party midstream services revenues.
Adjusted EBITDA, a non-GAAP financial measure, increased by $70.6$6.8 million to $155.4$144.1 million for the three months ended SeptemberJune 30, 2018,2019, as compared to $84.8$137.3 million for the three months ended SeptemberJune 30, 2017.2018. This increase in our Adjusted EBITDA is primarily attributable to higher oil and natural gas production, and higherpartially offset by lower realized oil and natural gas prices for the three months ended SeptemberJune 30, 2018,2019, as compared to the three months ended SeptemberJune 30, 2017.2018.

Adjusted EBITDA, a non-GAAP financial measure, increased by $182.5$14.4 million to $410.0$268.9 million for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to $227.4$254.6 million for the ninesix months ended SeptemberJune 30, 2017.2018. This increase in our

Adjusted EBITDA is primarily attributable to higher oil and natural gas production, partially offset by lower realized oil and higher oilgas prices for the ninesix months ended SeptemberJune 30, 2018,2019, as compared to the ninesix months ended SeptemberJune 30, 2017.2018.
Off-Balance Sheet Arrangements
From time-to-time, we enter into off-balance sheet arrangements and transactions that can give rise to material off-balance sheet obligations. As of SeptemberJune 30, 2018,2019, the material off-balance sheet arrangements and transactions that we have entered into include (i) operating lease agreements, (ii) non-operated drilling commitments, (iii)(ii) termination obligations under drilling rig contracts, (iv)(iii) firm transportation, gathering, processing and disposal commitments and (v)(iv) contractual obligations for which the ultimate settlement amounts are not fixed and determinable, such as derivative contracts that are sensitive to future changes in commodity prices or interest rates, gathering, treating, transportation and disposal commitments on uncertain volumes of future throughput, open delivery commitments and indemnification obligations following certain divestitures. Other than the off-balance sheet arrangements described above, the Company has no transactions, arrangements or other relationships with unconsolidated entities or other persons that are reasonably likely to materially affect the Company’s liquidity or availability of or requirements for capital resources. See “— Obligations and Commitments” below and Note 910 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for more information regarding our off-balance sheet arrangements. Such information is incorporated herein by reference.
Obligations and Commitments
We had the following material contractual obligations and commitments at SeptemberJune 30, 20182019:
Payments Due by PeriodPayments Due by Period
(In thousands)Total 
Less
Than
1 Year
 
1 - 3
Years
 
3 - 5
Years
 
More
Than
5 Years
Total 
Less
Than
1 Year
 
1 - 3
Years
 
3 - 5
Years
 
More
Than
5 Years
Contractual Obligations:                  
Revolving credit borrowings, including letters of credit(1)
$327,991
 $
 $
 $
 $327,991
Borrowings under credit agreements and facilities, including letters of credit(1)
$474,871
 $
 $
 $474,871
 $
Senior unsecured notes(2)
750,000
 
 
 
 750,000
1,050,000
 
 
 
 1,050,000
Office leases21,035
 2,647
 5,388
 5,604
 7,396
28,112
 3,724
 7,963
 8,415
 8,010
Non-operated drilling commitments(3)
44,234
 44,234
 
 

 
51,719
 51,719
 
 

 
Drilling rig contracts(4)
32,790
 30,771
 2,019
 
 
39,127
 23,870
 15,257
 
 
Asset retirement obligations29,634
 928
 1,106
 2,229
 25,371
32,242
 1,556
 2,441
 537
 27,708
Natural gas transportation, gathering and processing agreements with non-affiliates(5)
451,092
 18,957
 87,651
 90,815
 253,669
554,863
 43,786
 113,567
 113,598
 283,912
Gathering, processing and disposal agreements with San Mateo(6)
222,028
 1,727
 69,994
 75,102
 75,205
547,514
 
 96,517
 163,408
 287,589
Natural gas construction contracts(7)
11,955
 11,955
 
 
 
Natural gas engineering, construction and installation contract(7)
71,820
 71,820
 
 
 
Total contractual cash obligations$1,890,759

$111,219

$166,158

$173,750

$1,439,632
$2,850,268

$196,475

$235,745

$760,829

$1,657,219
__________________
(1)
The amounts included in the table above represent principal maturities only. At SeptemberJune 30, 20182019, we had $325.0$205.0 million in borrowings outstanding under our Credit Agreement and approximately $3.0$13.6 million in outstanding letters of credit issued pursuant to the Credit Agreement. The Credit Agreement matures in October 2023. At June 30, 2019, San Mateo I had $240.0 million of borrowings outstanding under the San Mateo Credit Facility and approximately $16.2 million in outstanding letters of credit issued pursuant to the San Mateo Credit Facility. The San Mateo Credit Facility matures in December 2023. Assuming the amounts outstanding and interest rates of 3.64% and 4.16% (for the Credit Agreement and the San Mateo Credit Facility), respectively, at June 30, 2019, the interest expense is expected to be approximately $7.5 million and $10.0 million each year until maturity.
(2)The amounts included in the table above represent principal maturities only. Interest expense on the Original 2026$1.05 billion of Notes that were outstanding as of SeptemberJune 30, 20182019 is expected to be approximately $44.1$61.7 million each year until maturity.
(3)At SeptemberJune 30, 2018,2019, we had outstanding commitments to participate in the drilling and completion of various non-operated wells. Our working interests in these wells are typically small, and certain of these wells were in progress at SeptemberJune 30, 2018.2019. If all of these wells are drilled and completed, we will have minimum outstanding aggregate commitments for our participation in these wells of approximately $44.2$51.7 million at SeptemberJune 30, 2018,2019, which we expect to incur within the next year.12 months.
(4)We do not own or operate our own drilling rigs but instead enter into contracts with third parties for such drilling rigs. See Note 9 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for more information regarding these contractual commitments.
(5)In late 2015,From time to time, we enteredenter into a 15-year fixed-feeagreements with third parties whereby we commit to deliver anticipated natural gas gathering and processing agreement for a significant portionoil production and salt water from certain portions of our operated natural gas productionacreage for gathering, transportation, processing, fractionation, sales and, in Loving County, Texas. In late 2017, we entered into an 18-year fixed-fee natural gas transportation agreement where we committed to deliver a portionthe case of the residue natural gas production at the tailgatesalt water, disposal. Certain of the Black River Processing Plant to transport through the counterparty’s pipeline in Eddy County, New Mexico. In late 2017, we also entered into a fixed-fee NGL transportation and fractionation agreement whereby we committed to deliver our NGL production at the tailgate of the Black River Processing Plant. We have committed to deliver a minimum amount of NGLs to the counterparty upon construction and completion of a pipeline expansion and a fractionation facility by the counterparty, which is currently expected to be completed late in 2019. We have no rights to compel the counterparty to construct this pipeline extension or fractionation facility. If the counterparty does not construct the pipeline extension and fractionation facility, then we do not have any minimum volume commitments under the agreement. If the counterparty constructs the pipeline extension and fractionation facility on or prior to February 28, 2021, then we will have a commitment to deliver athese

agreements contain minimum amount of NGLs for seven years following the completion of the pipeline extension and fractionation facility.volume commitments. If we do not meet our NGLthe minimum volume commitment in any quarter during the seven-year commitment period,commitments under these agreements, we will be required to pay acertain deficiency fee per gallon of NGL deficiency. The amounts in the table assume that the seven-year period containing minimum NGL volume commitments begins in late 2019. In the second quarter of 2018, we entered into a 16-year, fixed fee natural gas transportation agreement that begins on October 1, 2019, whereby we committed to deliver a portion of the residue natural gas production at the tailgate of the Black River Processing Plant to transport through the counterparty’s pipeline. Additionally, in the second quarter of 2018, we entered into a short-term natural gas transportation agreement whereby we committed to deliver a portion of the residue natural gas production at the tailgate of the Black River Processing Plant to transport through the counterparty’s pipeline. Lastly, in the second quarter of 2018, we entered into a 10-year, fixed-fee natural gas sales agreement whereby we committed to deliver residue natural gas through the counterparty’s pipeline to the Texas Gulf Coast beginning on the in-service date for such pipeline, which is expected to be operational in late 2019.fees. See Note 910 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for more information regardingabout these contractual commitments.
(6)In February 2017, in connection with the formation of San Mateo I, we dedicated our current and certain future leasehold interests in the Rustler Breaks and Wolf asset areas pursuant to 15-year, fixed-fee natural gas, oil and salt water gathering agreements and salt water disposal agreements. In addition, effective February 1, 2017, we dedicated our current and certain future leasehold interests in the Rustler Breaks asset area pursuant to a 15-year, fixed-fee natural gas processing agreement. In February 2019, in connection with the formation of San Mateo II, we dedicated our current and certain future leasehold interests in the Greater Stebbins Area and the Stateline asset area pursuant to 15-year, fixed-fee agreements for oil, natural gas and salt water gathering, natural gas processing and salt water disposal. See Note 910 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for more information regardingabout these contractual commitments.
(7)Beginning in May 2017,June 2019, a subsidiary of San Mateo II entered into certain agreementsan agreement with third parties for the engineering, procurement, construction and installation of an expansion of the Black River Processing Plant. In addition, during the first quarter of 2018, a subsidiary of San Mateo entered into agreements for additional field compression and an amine gas treatment unit to maximize the operation of the Black River Processing Plant.Plant, including required compression. See Note 910 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for more information regardingabout these contractual commitments.
General Outlook and Trends
In 2018 and 2019, oil prices generally improved from the lower prices we experienced in 2016 and 2017, although oil prices remained significantly below their most recent highs in 2014. For the three months ended SeptemberJune 30, 2018,2019, oil prices averaged $69.51$59.96 per Bbl, ranging from a high of $74.14$66.30 per Bbl in early Julylate April to a low of $65.01$51.14 per Bbl in mid-August,mid-June, based upon the NYMEX West Texas Intermediate oil futures contract price for the earliest delivery date.
We realized a weighted average oil price of $57.15$56.51 per Bbl ($58.9756.86 per Bbl including realized gains from oil derivatives) for our oil production for the three months ended SeptemberJune 30, 2018,2019, as compared to $46.25$61.44 per Bbl ($46.4760.52 per Bbl including realized gainslosses from oil derivatives) for our oil production for the three months ended SeptemberJune 30, 2017.2018. At OctoberJuly 31, 2018,2019, the NYMEX West Texas Intermediate oil futures contract for the earliest delivery date had declineddecreased from the average price for the thirdsecond quarter of 2018,2019, settling at $65.31$58.58 per Bbl, which was also a significant increasedecrease as compared to $54.38$68.76 per Bbl at OctoberJuly 31, 2017.2018.
For the three months ended SeptemberJune 30, 2018,2019, natural gas prices averaged $2.87$2.51 per MMBtu, ranging from a high of approximately $3.08$2.71 per MMBtu in late Septemberearly April to a low of approximately $2.72$2.19 per MMBtu in mid-July,late June, based upon the NYMEX Henry Hub natural gas futures contract price for the earliest delivery date.
We realized a weighted average natural gas price of $3.77$1.64 per Mcf (with no realized gains or losses from natural gas derivatives) for our natural gas production (including revenues attributable to NGLs) for the three months ended SeptemberJune 30, 2018,2019, as compared to $3.42$3.38 per Mcf (with no realized gains or losses from natural gas derivatives) for our natural gas production (including revenues attributable to NGLs) for the three months ended SeptemberJune 30, 2017. Our weighted average natural gas price was positively impacted by increasing NGL revenues during the third quarter of 2018 as compared to the third quarter of 2017.2018. At OctoberJuly 31, 2018,2019, the NYMEX Henry Hub natural gas futures contract price for the earliest delivery date had increaseddecreased from the average price for the thirdsecond quarter of 2018,2019, settling at $3.26$2.23 per MMBtu, which was also an increasea decrease as compared to $2.90$2.78 per MMBtu at OctoberJuly 31, 2017.2018.
The prices we receive for oil, natural gas and NGLs heavily influence our revenue, profitability, cash flow available for capital expenditures, access to capital and future rate of growth. Oil, natural gas and NGLs are commodities, and therefore, theirNGL prices are subject to wide fluctuations in response to relatively minor changes in supply and demand. Historically, the markets for oil, natural gas and NGLs have been volatile and these markets will likely continue to be volatile in the future. Declines in oil, natural gas or NGL prices not only reduce our revenues, but could also reduce the amount of oil, natural gas and NGLs we can produce economically.economically and, as a result, could have an adverse effect on our financial condition, results of operations, cash flows and reserves. We are uncertain if oil and natural gas prices may rise from their current levels, and, in fact, oil and natural gas prices may decrease in future periods.
From time to time, we use derivative financial instruments to mitigate our exposure to commodity price risk associated with oil, natural gas and NGL prices and basis differentials.prices. Even so, decisions as to whether, at what price and what production volumes to hedge are difficult and depend on market conditions and our forecast of future production and oil, natural gas and NGL prices, and we may not always employ the optimal hedging strategy. This, in turn, may affect the liquidity that can be accessed through the borrowing base under our Credit Agreement and through the capital markets.
In addition, the prices we receive for our oil and natural gas production often reflect a discount to the relevant benchmark prices, such as the NYMEX West Texas Intermediate oil price or the NYMEX Henry Hub natural gas price. The difference between the benchmark price and the price we receive is called a differential. At SeptemberJune 30, 2018,2019, most of our oil production from the Delaware Basin was sold based on prices established in Midland, Texas, and most of our natural gas production from the Delaware Basin was sold based on prices established at the Waha Hub in far West Texas. During the firstsecond quarter of 2018, the price differentials for oil sold in Midland and natural gas sold at the Waha Hub compared to the benchmark prices for oil and natural gas, respectively, began to widen significantly and these differentials widened further incontinued to widen throughout most of the second and third quarters.year. These widening basis differentials negatively impacted our oil and natural gas revenues throughoutin 2018.
During 2018, the thirdMidland-Cushing (Oklahoma) oil price differential increased substantially from essentially no difference in the first quarter to as much as $16.00 per Bbl in late September but narrowed to about $5.00 per Bbl at the

beginning of 2019. The Midland-Cushing (Oklahoma) oil price differential narrowed further to less than $1.00 per Bbl during the first quarter of 2018, with2019 but widened again during the second quarter to levels experienced at the beginning of the year. The Midland-Cushing (Oklahoma) oil price differentials reaching higher than ($16.00) per Bbldifferential has narrowed again early in the third quarter of 2019 and may become positive in the future, although it is possible that this differential could widen further at certain times during the remainder of 2019.
Our realized price for our Delaware Basin natural gas production is exposed to the Waha-Henry Hub basis differential. This natural gas price differentials reaching higher than ($1.25)differential increased significantly throughout 2018 from about $0.50 per MMBtu at the beginning of the year to between $1.00 and $2.00 per MMBtu for most of 2018, but reaching highs of greater than $4.00 per MMBtu for a brief period near the end of the year. The natural gas price differential narrowed to between $1.00 and $2.00 per MMBtu at the beginning of 2019 and remained there throughout much of the first quarter.
The natural gas basis differentials widened significantly in April 2019 for a short period of time, including a few days when natural gas was being sold at Waha for negative prices as high as ($7.00) to ($9.00) per MMBtu on a daily market basis, resulting, in part, from a number of simultaneous outages and maintenance projects impacting major pipelines in the area. Natural gas prices at Waha were positive for most of the latter part of April 2019, but daily market prices for natural gas sold at Waha reached negative levels of ($2.00) to ($3.00) per MMBtu in late May. During the quarter. The oil price differentials have begun to narrow somewhat since September 30, 2018, butsecond quarter of 2019, the average daily Waha natural gas price was ($0.07) per MMBtu. In response to these basis differentials, have widened further. These oilwe temporarily shut in certain high gas-oil ratio wells and took other actions to mitigate the impact of these negative prices on our results. Daily market prices for natural gas price differentials aresold at Waha were positive for the month of July, although prices at Waha remained well below Henry Hub prices.
The majority of our Delaware Basin natural gas production is expected to negatively impact our oil and natural gas revenuesremain exposed to the Waha-Henry Hub basis differentials until early in the fourth quarter of 2018.2019, when the Kinder Morgan Gulf Coast Express Pipeline Project (“GCX Pipeline”) is expected to become operational. We have secured firm natural gas transportation and sales on the GCX Pipeline for an average of approximately 110,000 to 115,000 MMBtu per day at a price based upon Houston Ship Channel pricing. Further, approximately 23% of our reported natural gas production in the second quarter of 2019 was attributable to the Haynesville and Eagle Ford shale plays, which are not exposed to Waha pricing. In addition, as a two-stream reporter, most of our natural gas volumes in the Delaware Basin are processed for NGLs, resulting in a further reduction in the reported natural gas volumes exposed to Waha pricing.
We anticipate that theseThese widening price differentials could persist for 12 to 18 months or longer until additional oil and natural gas pipeline capacity from West Texas to the Texas Gulf Coast and other end markets is completed; however, we can provide no assurances as to how long these widening differentials may persist, and these price differentials could widen further in future periods. At September 30, 2018, we had approximately 45% to 50% of our anticipated Delaware Basin oil production for the fourth quarter of 2018 hedged at a weighted average basis differential swap price of ($1.02) per barrel to help mitigate our exposure to these widening oil price basis differentials. See Note 7 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for a summary of these oil basis swaps. At September 30, 2018, we had no hedges in place to mitigate our exposure to basis differentials for our natural gas production in 2018 and no basis hedges in place for either oil or natural gas production in 2019 or beyond.
These widening basis differentials are largely attributable to industry concerns regarding the near-term sufficiency of pipeline takeaway capacity for oil, natural gas and NGL production in the Delaware Basin. At OctoberJuly 31, 2018,2019, we had not experienced material pipeline-related interruptions to our oil, natural gas or NGL production during 2018.production. During the third quarter of 2018, shortages of NGL fractionation capacity were experienced by certain operators in the Delaware Basin and elsewhere. WeAlthough we did not experience suchencounter fractionation capacity problems in the third quarter of 2018,then and although we do not expect to encounter fractionation capacitysuch problems going forward, we can provide no assurances that such problems will not arise. If we do experience any interruptions with takeaway capacity or NGL fractionation, our oil and natural gas revenues, business, financial condition, results of operations and cash flows could be adversely affected.
Coinciding withWe anticipate that the improvementsvolatility in these oil and natural gas prices since the latter part of 2016, we have experienced price increases from certain of our service providers for somedifferentials could persist throughout much of the products and services we use in our drilling, completion and production operations. Ifremainder of 2019 or longer until additional oil and natural gas prices remain at their current levels or increase further, we could experience additional price increases for drilling, completionpipeline capacity from West Texas to the Texas Gulf Coast and production products and services, although weother end markets is completed. We can provide no estimatesassurances as to how long these volatile differentials may persist, and as noted above, these price differentials could widen further in future periods. Should we experience future periods of negative pricing for natural gas as we did during the magnitudesecond quarter of 2019, we may temporarily shut in certain high gas-oil ratio wells and take other actions to mitigate the impact on our realized natural gas prices and results. In addition, we have no derivative contracts in place to mitigate our exposure to these increases.natural gas price differentials during the remainder of 2019 and have limited oil basis hedges in place for the remainder of 2019 and 2020.
Our oil and natural gas exploration, development, production, midstream and related operations are subject to extensive federal, state and local laws, rules and regulations. The regulatory burden on the oil and natural gas industry increases our cost of doing business and affects our profitability. Because these laws, rules and regulations are frequently amended or reinterpreted and new laws, rules and regulations are proposed or promulgated, we are unable to predict the future cost or impact of complying with the laws, rules and regulations to which we are, or will become, subject. For example, in early 2019, separate bills were introduced in the New Mexico Senate proposing to add a surtax on natural gas processors and proposing to place a moratorium on hydraulic fracturing. New Mexico’s governor also signed an executive order requiring a regulatory framework to ensure reductions of methane emissions. Although the bills relating to the moratorium on hydraulic fracturing and the tax on natural gas processors were not passed in the most recent legislative session, these and other laws, rules and regulations, if enacted, could have an adverse impact on our business, financial condition, results of operations and cash flows.
Like other oil and natural gas producing companies, our properties are subject to natural production declines. By their nature, our oil and natural gas wells will experience rapid initial production declines. We attempt to overcome these production

declines by drilling to develop and identify additional reserves, by exploring for new sources of reserves and, at times, by acquisitions. During times of severe oil, natural gas and NGL price declines, however, drilling certainadditional oil or natural gas wells may not be economic, and we may find it necessary to reduce capital expenditures and curtail drilling operations in order to preserve liquidity. A material reduction in capital expenditures and drilling activities could materially impact our production volumes, revenues, reserves, cash flows and our availability under our Credit Agreement.
We strive to focus our efforts on increasing oil and natural gas reserves and production while controlling costs at a level that is appropriate for long-term operations. Our ability to find and develop sufficient quantities of oil and natural gas reserves at economical costs is critical to our long-term success. Future finding and development costs are subject to changes in the costs of acquiring, drilling and completing our prospects.
Item 3. Quantitative and Qualitative Disclosures About Market Risk
Except as set forth below, there have been no material changes to the sources and effects of our market risk since December 31, 2017,2018, which are disclosed in Part II, Item 7A of the Annual Report and incorporated herein by reference.
Commodity price exposure. We are exposed to market risk as the prices of oil, natural gas and NGLs fluctuate as a result of changes in supply and demand and other factors. To partially reduce price risk caused by these market fluctuations, we have entered into derivative financial instruments in the past and expect to enter into derivative financial instruments in the future to cover a significant portion of our anticipated future production.
We typically use costless (or zero-cost) collars and/or swap contracts to manage risks related to changes in oil, natural gas and NGL prices. Traditional costless collars provide us with downside price protection through the purchase of a put option that is financed through the sale of a call option. Because the call option proceeds are used to offset the cost of the put option, these arrangements are initially “costless” to us. Participating three-way costless collars also provide the Company with downside price protection through the purchase of a put option, but they also allow the Company to participate in price upside through the purchase of a call option; the purchase of both the put option and the call option are financed through the sale of a call option. Because the proceeds from the call option sale are used to offset the cost of the purchased put and call options, these arrangements are also initially “costless” to the Company. In the case of a costless collar, the put option and the call option or options have different fixed price components. In a swap contract, a floating price is exchanged for a fixed price over a specified period, providing downside price protection.

We record all derivative financial instruments at fair value. The fair value of our derivative financial instruments is determined using purchase and sale information available for similarly traded securities. At SeptemberJune 30, 2018, Royal Bank of Canada,2019, The Bank of Nova Scotia, BMO Harris Financing (Bank of Montreal) and SunTrust Bank (or affiliates thereof) were the counterparties for all of our derivative instruments. We have considered the credit standing of the counterparties in determining the fair value of our derivative financial instruments. See Note 78 to the interim unaudited condensed consolidated financial statements in this Quarterly Report for a summary of our open derivative financial instruments at SeptemberJune 30, 2018.2019. Such information is incorporated herein by reference.
Item 4. Controls and Procedures
Evaluation of Disclosure Controls and Procedures
Evaluation of Disclosure Controls and Procedures
As of the end of the period covered by this Quarterly Report, we evaluated the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act) under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer. Based on that evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of SeptemberJune 30, 20182019 to ensure that (i) information required to be disclosed in the reports it files and submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and that (ii) information required to be disclosed under the Exchange Act is accumulated and communicated to the Company’s management, including our Chief Executive Officer and our Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.
Changes in Internal Control over Financial Reporting
There were no changes in our internal controls during the three months ended SeptemberJune 30, 20182019 that have materially affected or are reasonably likely to have a material effect on our internal control over financial reporting.

Part II — OTHER INFORMATION
Item 1. Legal Proceedings
We are party to several lawsuitslegal proceedings encountered in the ordinary course of business. While the ultimate outcome and impact on us cannot be predicted with certainty, in the opinion of management, it is remote that these lawsuitslegal proceedings will have a material adverse impact on our financial condition, results of operations or cash flows.
Item 1A. Risk Factors
We are subject to various risks and uncertainties in the course of our business. For a discussion of such risks and uncertainties, please see “Item 1A. Risk Factors” in the Annual Report.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
During the quarter ended SeptemberJune 30, 2018,2019, the Company re-acquired shares of common stock from certain employees in order to satisfy the employees’ tax liability in connection with the vesting of restricted stock.
Period 
Total Number of Shares Purchased(1)
 Average Price Paid Per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Maximum Number of Shares that May Yet Be Purchased under the Plans or Programs
July 1, 2018 to July 31, 2018 4,713
 $31.63
 
 
August 1, 2018 to August 31, 2018 37,828
 32.05
 
 
September 1, 2018 to September 30, 2018 2,827
 32.81
 
 
Total 45,368
 $32.05
 
 
Period 
Total Number of Shares Purchased(1)
 Average Price Paid Per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Maximum Number of Shares that May Yet Be Purchased under the Plans or Programs
April 1, 2019 to April 30, 2019 1,526
 $20.04
 
 
May 1, 2019 to May 31, 2019 1,460
 $19.03
 
 
June 1, 2019 to June 30, 2019 1,026
 $19.00
 
 
Total 4,012
 $19.41
 
 
_________________
(1) The shares were not re-acquired pursuant to any repurchase plan or program. The Company re-acquired shares of common stock from certain employees in order to satisfy the employees’ tax liability in connection with the vesting of restricted stock.
(1)The shares were not re-acquired pursuant to any repurchase plan or program. The Company re-acquired shares of common stock from certain employees in order to satisfy the employees’ tax liability in connection with the vesting of restricted stock.

Item 6. Exhibits
Exhibit
Number
 Description
   
3.1 
3.2
   
3.33.2 
   
3.43.3 
   
3.53.4 
   
4.110.1† 


10.2†
   
4.210.3† 
   
4.310.4† 
10.1
   
10.210.5† 
10.3
10.4
10.5
10.6
10.7
   
31.1 
  
31.2 
  

32.1 
  
32.2 
  
   101 The following financial information from Matador Resources Company’s Quarterly Report on Form 10-Q for the quarter ended SeptemberJune 30, 20182019 formatted in Inline XBRL (eXtensible(Inline eXtensible Business Reporting Language): (i) the Condensed Consolidated Balance Sheets - Unaudited, (ii) the Condensed Consolidated Statements of Operations - Unaudited, (iii) the Condensed Consolidated StatementStatements of Changes in Shareholders’ Equity - Unaudited, (iv) the Condensed Consolidated Statements of Cash Flows - Unaudited and (v) the Notes to Condensed Consolidated Financial Statements - Unaudited (submitted electronically herewith).
   104Cover Page Interactive Data File, formatted in Inline XBRL.
Indicates a management contract or compensatory plan or arrangement.



SIGNATURES
Pursuant to the requirements 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.
 
   MATADOR RESOURCES COMPANY
   
Date: November 1, 2018August 2, 2019By: /s/ Joseph Wm. Foran
   Joseph Wm. Foran
   Chairman and Chief Executive Officer
Date: November 1, 2018August 2, 2019By: /s/ David E. Lancaster
   David E. Lancaster
   Executive Vice President and Chief Financial Officer




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