| Halliburton Co +1 co-filer10% owner · 1 transaction | — | 135.63M†as of Apr 2007 | — | — | 135.63M |
| Gendell Jeffrey L Et Al10% owner · 12 transactions | — | 35.73M†as of May 2008 | — | 2.00M | 1.99M |
| Bradie StuartPresident and CEO, Director · 80 transactions | — | 858.1K | 1.59M | — | 143.2K |
| Sopp Mark WEVP, Strategic Transactions · 57 transactions | — | 200.6K | 217.6K | 33.0K | — |
| Oelking RoyPresident E&C Americas · 26 transactions | — | 142.1Kas of Mar 2016 | 144.4K | — | 10.2K |
| Mujib FarhanPres., Energy Solutions Dlv. · 47 transactions | — | 141.9Kas of Mar 2020 | 152.6K | — | 5.5K |
| Farley Andrew DEVP - General Counsel · 47 transactions | — | 128.6Kas of Mar 2014 | 170.3K | — | 8.9K |
| Ibrahim JalalPres., Sustainable Tech Solns · 59 transactions | — | 127.2K | 227.4K | — | 35.0K |
| Summers AndrewGroup President, IGP · 6 transactions | — | 103.2Kas of Apr 2014 | 107.4K | — | — |
| Harrington IvorPresident E&C · 17 transactions | — | 103.0Kas of Jul 2015 | 125.5K | — | 15.0K |
| Ferraioli Brian KEVP & Chief Financial Officer · 10 transactions | — | 96.5Kas of Feb 2017 | 130.4K | — | — |
| Mackey Ian JohnEVP, Chief Corporate Officer · 19 transactions | — | 91.2Kas of Jun 2020 | 89.3K | — | 24.6K |
| Bright William Byron Jr.Chief Operating Officer · 58 transactions | — | 90.0Kas of May 2025 | 169.4K | — | 34.3K |
| Dauzat Michel PGroup President - Services · 6 transactions | — | 87.9Kas of Apr 2014 | 74.9K | — | — |
| Stanski Bruce APresident, G&I · 46 transactions | — | 86.7Kas of Mar 2009 | 147.0K | — | 35.1K |
| Akerson EileenEVP and General Counsel · 54 transactions | — | 83.8Kas of Mar 2021 | 95.7K | — | 4.1K |
| Huff John RDirector · 9 transactions | — | 80.5Kas of Mar 2014 | 80.5K | — | — |
| Derbyshire JohnPresident, Technology · 32 transactions | — | 80.0Kas of Mar 2019 | 87.4K | — | 5.5K |
| Conlon Gregory SeanChief Digital & Development · 30 transactions | — | 71.3K | 120.8K | — | 49.6K |
| Curtiss Jeffrey EDirector · 14 transactions | — | 71.2Kas of Feb 2018 | 63.9K | 5.0K | — |
| Carroll Loren KDirector · 14 transactions | — | 69.6Kas of Feb 2019 | 69.6K | — | — |
| Slater Richard JDirector · 24 transactions | — | 69.6Kas of Apr 2017 | 69.5K | — | — |
| Hill Kenneth GrahamEVP- GBDS · 13 transactions | — | 69.2Kas of Feb 2018 | 59.9K | — | — |
| Myles JenniferEVP, Chief People Officer · 41 transactions | — | 67.7K† | 144.7K | — | 14.6K |
| Lyles Lester LDirector · 69 transactions | — | 67.2Kas of Apr 2025 | 97.6K | — | 17.0K |
| Calton Dennis LeeEVP, Operations · 23 transactions | — | 61.5Kas of Feb 2011 | 20.8K | — | — |
| Baldwin Mark EDirector · 13 transactions | — | 60.6Kas of Aug 2024 | 64.6K | — | — |
| Pickard Ann DarleneDirector · 15 transactions | — | 58.9K | 64.9K | — | 6.0K |
| Blackwell James R.Director · 18 transactions | — | 54.9Kas of Apr 2021 | 54.9K | — | — |
| Moore Jack BDirector · 21 transactions | — | 54.4K | 78.2K | 4.0K | — |
| Utt William PCEO and President, Director · 69 transactions | — | 54.3Kas of Mar 2014 | 598.1K | 100 | 369.6K |
| della Sala UmbertoDirector · 9 transactions | — | 52.9Kas of Feb 2022 | 52.9K | — | — |
| Masiello Wendy MotlongDirector · 12 transactions | — | 49.7K | 49.7K | — | — |
| Burgher Cedric WSenior VP and CFO · 7 transactions | — | 45.5Kas of Nov 2007 | 54.4K | — | — |
| Evans Shad E.EVP & Chief Financial Officer · 36 transactions | — | 43.7K | 22.3K | 8.4K | — |
| Zelinski Robert DavidPresident, Onshore E&CA · 13 transactions | — | 39.9Kas of Jun 2016 | 24.7K | — | — |
| Galindo SoniaEVP, Gen. Counsel & Corp. Sec. · 23 transactions | — | 38.8K | 51.8K | — | 4.7K |
| Gann John W JrVP & Chief Accounting Officer, 10% owner · 15 transactions | — | 37.8Kas of Mar 2010 | 48.2K | — | — |
| Blount W FrankDirector · 9 transactions | — | 37.8Kas of Mar 2015 | 37.8K | — | — |
| Baldwin Dennis SSVP & Chief Accounting Officer · 10 transactions | — | 36.4Kas of Mar 2014 | 37.0K | — | — |
| Sabater Carlos A.Director · 9 transactions | — | 35.7K | 21.2K | 14.5K | — |
| Zimmerman David LeePresident, Services · 18 transactions | — | 33.0Kas of Feb 2012 | 22.2K | — | — |
| Kelly Douglas NickPresident, Technology · 24 transactions | — | 31.6Kas of Nov 2022 | 27.2K | — | 7.3K |
| Braendeland Jan EgilEVP, Global Sales · 11 transactions | — | 31.1Kas of Feb 2017 | 28.3K | — | — |
| Quinn John W.President, Downstream · 12 transactions | — | 31.0Kas of Mar 2009 | 11.7K | — | — |
| Challand Timothy B.President, Technology · 21 transactions | — | 30.2Kas of Aug 2009 | 12.9K | — | 12.0K |
| Dugle Lynn ADirector · 29 transactions | — | 28.3K | 28.3K | — | — |
| Carney Raymond L. Jr.VP & Chief Accounting Officer · 14 transactions | — | 24.8Kas of May 2020 | 28.0K | — | — |
| Pringle AndrewPresident, Government Services · 14 transactions | — | 24.7Kas of Feb 2017 | 20.1K | — | — |
| Denicola T KevinSr. VP and CFO · 3 transactions | — | 21.8K†as of Mar 2009 | 11.0K | — | — |
| Rose John LEVP - Operations · 30 transactions | — | 18.4Kas of May 2012 | 90.9K | — | 25.0K |
| Wiederkehr Roger A.President, KBRwyle · 1 transaction | — | 17.7Kas of Feb 2017 | 17.7K | — | — |
| Manzoni John Alexander KCBDirector · 7 transactions | — | 17.5K | 17.5K | — | — |
| Crowell Ronald BVice President, Financial Ops · 1 transaction | — | 14.4Kas of Jul 2007 | 2.1K | — | — |
| Cook Linda ZDirector · 8 transactions | — | 14.2Kas of Jan 2015 | 14.2K | — | — |
| Dominguez JosephDirector · 5 transactions | — | 13.4K | 13.4K | — | — |
| Kavanaugh MarkPresident · 6 transactions | — | 11.8K | 5.1K | — | — |
| Rowe NelsonChief Accounting Officer · 20 transactions | — | 11.2Kas of Apr 2017 | 10.1K | — | — |
| Brace KlaudiaEVP - Administration · 12 transactions | — | 11.1Kas of Feb 2011 | 32.1K | — | — |
| Vigeveno Huibert HansDirector · 3 transactions | — | 10.8K | 10.8K | — | — |
| Mumford TomSenior Vice President · 6 transactions | — | 10.8Kas of Feb 2010 | 12.4K | — | — |
| Carter Susan KExecutive VP - CFO · 7 transactions | — | 10.7Kas of Mar 2013 | 11.9K | — | — |
| Stewart Vincent R.Director · 4 transactions | — | 10.5Kas of Apr 2023 | 10.5K | — | — |
| Etta NchachaDirector · 4 transactions | — | 10.4K | 10.4K | — | — |
| Von Thaer LewisDirector · 4 transactions | — | 10.4K | 7.4K | 3.0K | — |
| Kahn Paul EmmanuelPresident Gov't Solutions Intl · 6 transactions | — | 10.3Kas of Feb 2024 | 11.6K | — | — |
| Fulton Iain RobertVice President, Internal Audit · 5 transactions | — | 9.7Kas of Aug 2007 | 4.8K | — | 2.6K |
| Hill Douglas SPres., Readiness & Sustainment · 6 transactions | — | 8.9K | 5.1K | — | — |
| Barrie AndrewPresident Gov't Solutions EMEA · 27 transactions | — | 8.3Kas of Aug 2022 | 24.6K | — | 15.5K |
| Vasquez Alison GautSVP, Chief Accounting Officer · 8 transactions | — | 6.8Kas of May 2025 | 2.1K | — | — |
| Taylor Jennefer ThaiVP, Chief Accounting Officer · 5 transactions | — | 4.3K | 2.0K | — | — |
| Williams Mark SGroup President - IG&P · 4 transactions | — | 3.9Kas of Feb 2012 | 4.6K | — | — |
| Schneider Charles E.VP, Treasurer & Interim CFO · 1 transaction | — | 3.7Kas of May 2008 | 1.6K | — | — |