| First Reserve GP XII Ltd +4 co-filers10% owner · 1 transaction | — | 63.70M†as of Apr 2012 | — | — | 9.40M |
| Fir Tree Capital Management LPDirector · 24 transactions | — | 18.74M†as of Dec 2020 | 6.72M | — | 11.75M |
| Coghill Clint DDirector · 10 transactions | — | 8.53M† | — | 804.0K | 1.00M |
| Morgan Donald E III +2 co-filers10% owner · 16 transactions | — | 8.29M†as of Jun 2020 | — | — | 798.6K |
| Aronson Jeffrey +7 co-filers10% owner · 12 transactions | — | 4.53M†as of Jun 2018 | — | — | 216.5K |
| McDaniel Stephen JamesDirector · 4 transactions | — | 4.51Mas of Feb 2014 | 4.51M | — | — |
| Eagle Energy Co of Oklahoma, LLC +6 co-filers10% owner · 3 transactions | — | 3.54M†as of Sep 2015 | — | — | — |
| Aronson Jeffrey10% owner · 8 transactions | — | 3.17M†as of Oct 2016 | — | — | 8.8K |
| CSCP II Cayman GP Ltd. +9 co-filers10% owner · 8 transactions | — | 3.17M†as of Oct 2016 | — | — | 8.8K |
| Aronson Jeffrey +4 co-filers10% owner · 21 transactions | — | 2.62M†as of Nov 2017 | — | — | 1.12M |
| Centerbridge Credit Partners General Partner, L.P. +5 co-filers10% owner · 21 transactions | — | 2.62M†as of Nov 2017 | — | — | 1.12M |
| Lasry Marc +5 co-filers10% owner · 1 transaction | — | 2.56Mas of Feb 2019 | — | — | 933.5K |
| R/C Energy GP IV, LLC +2 co-filers10% owner · 48 transactions | — | 1.96Mas of Feb 2016 | — | — | 1.58M |
| Crum John AChairman, President and CEO, Director · 17 transactions | — | 1.33Mas of Feb 2014 | 1.01M | 335.0K | — |
| Haight NelsonEVP, CFO and CAO · 15 transactions | — | 734.2Kas of Jun 2015 | 770.7K | — | — |
| Foley John P.VP - Corp. Counsel & Secretary · 3 transactions | — | 638.7Kas of Feb 2013 | 625.7K | 13.0K | — |
| Newstrom CurtisSVP - Business Development · 10 transactions | — | 540.9Kas of May 2014 | 586.3K | — | — |
| Burleigh Dexter A.SVP - Strategic Planning · 8 transactions | — | 493.2Kas of Jun 2014 | 508.1K | — | 8.8K |
| Mitchell Thomas LEVP & Chief Financial Officer · 4 transactions | — | 430.4Kas of Apr 2013 | 459.4K | — | — |
| Pugh Stephen CEVP & Chief Operating Officer · 4 transactions | — | 356.7Kas of Apr 2013 | 379.2K | — | — |
| David Matthew G.Vice President - Land · 3 transactions | — | 325.6Kas of Feb 2013 | 352.5K | — | 26.9K |
| Willsher MartynSEE REMARKS, Director · 31 transactions | — | 310.8Kas of Mar 2025 | 603.2K | 15.0K | 26.6K |
| Hamm Christopher W.Director · 19 transactions | — | 272.1Kas of Jul 2025 | 186.0K | 134.2K | 5.6K |
| Eck Mark EEVP - COO · 1 transaction | — | 266.7Kas of Dec 2014 | 266.7K | — | — |
| Willis Eric M.See Remarks · 32 transactions | — | 266.3K | 465.4K | — | — |
| Hebertson Gregory FSVP - Exploration · 4 transactions | — | 228.4Kas of Jun 2014 | 236.6K | — | — |
| Lopez Anthony WilliamSEE REMARKS · 30 transactions | — | 228.3K | 369.5K | — | 18.0K |
| Frew JamesSEE REMARKS · 13 transactions | — | 216.9K | 158.6K | 125.0K | — |
| Thiele Thomas ESVP - Mid-Continent Region · 1 transaction | — | 216.3Kas of Oct 2014 | — | — | — |
| Sambrooks David J.President and CEO, Director · 9 transactions | — | 172.7Kas of Aug 2019 | 234.6K | 15.3K | — |
| Christ Eric JVP, Gen. Counsel & Corp. Sec. · 6 transactions | — | 149.9Kas of Dec 2014 | 119.6K | — | — |
| Hart James R.Vice President - Midstream · 6 transactions | — | 146.6Kas of Feb 2013 | 140.6K | 6.0K | — |
| Smiley RichardSVP, OPERATIONS · 24 transactions | — | 141.3Kas of Mar 2023 | 319.6K | — | 30.0K |
| Snyder Todd RDirector · 13 transactions | — | 128.1Kas of Jul 2025 | 165.1K | 27.7K | — |
| Brace Frederic FPresident and CEO, Director · 6 transactions | — | 125.0Kas of Oct 2017 | 263.6K | — | — |
| Weatherholt Scott CEVP-GC, Corp Secty EVP-Land · 16 transactions | — | 114.9Kas of Aug 2019 | 153.7K | — | — |
| Furbee DanielSEE REMARKS, Director · 10 transactions | — | 112.5K | 159.6K | 20.0K | — |
| Adams Deborah GDirector · 5 transactions | — | 81.6Kas of Jul 2025 | 61.6K | 20.0K | — |
| Dulany Eric EdwardSEE REMARKS · 20 transactions | — | 80.2K | 161.8K | — | 19.5K |
| McGlynn Jason WilliamSVP, CHIEF FINANCIAL OFFICER · 16 transactions | — | 80.0Kas of Mar 2023 | 153.7K | — | — |
| Douglas Patrice DDirector · 11 transactions | — | 80.0Kas of Jun 2025 | 165.1K | — | 7.0K |
| France NatashaSEE REMARKS · 2 transactions | — | 67.7K | 10.4K | — | — |
| Carr Alan JeffreyDirector · 4 transactions | — | 65.3Kas of Aug 2019 | 65.3K | — | — |
| Harding Amelia KimVP- Human Resources & Admin · 13 transactions | — | 55.1Kas of Aug 2019 | 65.0K | — | — |
| Mariani KennethPRESIDENT, CEO, Director · 1 transaction | — | 55.0Kas of Aug 2019 | 55.0K | — | — |
| Leiker Loren MDirector · 3 transactions | — | 50.6Kas of Mar 2015 | 50.6K | — | — |
| Ricciardello Mary PDirector · 3 transactions | — | 50.6Kas of Mar 2015 | 50.6K | — | — |
| DuBard DeniseSee Remarks · 5 transactions | — | 49.3Kas of Apr 2021 | 62.6K | — | 13.3K |
| Goldman Neal PDirector · 5 transactions | — | 47.8Kas of Aug 2019 | 47.8K | — | — |
| Proman DavidDirector · 2 transactions | — | 45.3Kas of Aug 2021 | 30.3K | 15.0K | — |
| Zwahlen Clifford GVP - Corporate Reserves · 1 transaction | — | 45.0Kas of Mar 2013 | 45.0K | — | — |
| Craddock James EDirector · 2 transactions | — | 44.6Kas of Jun 2025 | 44.6K | — | — |
| McCullough Richard WayneVP and CAO · 9 transactions | — | 43.3Kas of Aug 2019 | 46.8K | — | 3.2K |
| Knudson Thomas CDirector · 2 transactions | — | 42.0Kas of Feb 2014 | 41.0K | — | — |
| Hill Peter JDirector · 2 transactions | — | 41.0Kas of Feb 2014 | 41.0K | — | — |
| Lederman Evan S.Director · 2 transactions | — | 40.3Kas of Aug 2021 | 30.3K | 10.0K | — |
| Prasad VidishaDirector · 2 transactions | — | 32.9Kas of Jun 2025 | 32.9K | — | — |
| Elkins Mitchell G.EVP Operations · 15 transactions | — | 28.5Kas of Oct 2017 | 443.2K | 10.0K | — |
| Schott PollySee Remarks · 1 transaction | — | 22.3Kas of Aug 2019 | 22.3K | — | — |
| Klein Randal TDirector · 1 transaction | — | 17.8Kas of May 2024 | 17.8K | — | — |
| Haight Nelson MEVP and CFO · 10 transactions | — | 11.6Kas of Apr 2017 | 111.2K | — | — |
| Greager Eric T.Director · 1 transaction | — | 11.4Kas of Dec 2022 | 11.4K | — | — |
| Reddin MichaelDirector · 2 transactions | — | 10.1Kas of May 2018 | 100 | 10.0K | — |
| Dunn David MDirector · 1 transaction | — | 2.2Kas of Aug 2019 | 2.2K | — | — |
| Vincent Bruce HDirector · 1 transaction | — | 100as of Nov 2016 | 100 | — | — |