| Total S.A. +1 co-filer10% owner · 1 transaction | — | 50.86Mas of Jun 2018 | — | 50.86M | — |
| Total Marketing Services S.A.10% owner · 6 transactions | — | 49.75Mas of May 2021 | — | — | 1.11M |
| Total Marketing Services S.A.S.10% owner · 18 transactions | — | 42.58Mas of Jun 2021 | — | — | 7.17M |
| Pickens Madeleine10% owner · 14 transactions | — | 19.74M†as of Dec 2011 | 1.82M | 398.9K | 2.31M |
| Pickens BooneDirector · 37 transactions | — | 13.06Mas of Mar 2018 | 1.94M | 398.9K | 8.82M |
| Pearl Frank H +1 co-filer10% owner · 1 transaction | — | 6.36Mas of Jun 2007 | — | — | 292.2K |
| Littlefair Andrew JDirector · 110 transactions | — | 1.98M | 3.16M | 364.7K | 1.81M |
| Pearl Frank H10% owner · 1 transaction | — | 1.39Mas of Dec 2007 | — | — | — |
| Corbus BarclayPRESIDENT AND CEO, Director · 62 transactions | — | 1.35M | 1.70M | 129.7K | 222.6K |
| Miller Bradley NPresident, CECC · 40 transactions | — | 1.21Mas of Apr 2011 | 601.9K | — | 3.41M |
| Perseus ENRG Investment, L.L.C.10% owner · 1 transaction | — | 1.00Mas of Dec 2007 | — | — | — |
| Pratt Mitchell WCOO AND SECRETARY · 47 transactions | — | 850.4Kas of Feb 2023 | 1.29M | 18.7K | 248.8K |
| Vreeland Robert M.CHIEF FINANCIAL OFFICER · 26 transactions | — | 832.3K | 998.5K | 79.8K | 171.1K |
| Scully StephenDirector · 20 transactions | — | 428.1K† | 345.6K | 105.0K | — |
| Taormina Vincent CDirector · 23 transactions | — | 423.1K† | 345.6K | 167.9K | — |
| Herrington John SDirector · 14 transactions | — | 404.6Kas of Mar 2018 | 139.1K | 183.4K | 167.9K |
| Harger James NChief Marketing Officer · 18 transactions | — | 361.1Kas of May 2012 | 282.4K | — | 279.5K |
| Wheeler Richard RChief Financial Officer · 18 transactions | — | 294.2Kas of Oct 2014 | 929.7K | — | 635.4K |
| Socha Kenneth MDirector · 15 transactions | — | 242.9K†as of May 2023 | 188.2K | 5.0K | 26.0K |
| Miller James C IIIDirector · 21 transactions | — | 197.3K†as of May 2023 | 277.6K | 11.9K | 92.3K |
| Mitchell Warren IDirector · 144 transactions | — | 189.2Kas of Mar 2018 | 289.6K | 30.1K | 230.5K |
| Ardisana Lizabeth ADirector · 6 transactions | — | 166.1K | 133.2K | 10.0K | — |
| Oconnor James EDirector · 5 transactions | — | 127.1Kas of Mar 2018 | 119.1K | 5.0K | — |
| Ford Patrick JDirector · 3 transactions | — | 126.8K | 103.9K | — | — |
| Grace Peter J.SVP, Sales and Finance · 24 transactions | — | 115.9K†as of May 2017 | 151.5K | 400 | 137.0K |
| Frabotta Bartolomeo A.Chief Operating Officer · 1 transaction | — | 50.0K | 50.0K | — | — |
| Weil Parker AndersDirector · 1 transaction | — | 13.1Kas of May 2023 | 13.1K | — | — |
| Demers David RDirector · 1 transaction | — | 100as of Dec 2007 | — | 100 | — |