| Corre Horizon Fund, LP +3 co-filers10% owner · 25 transactions | — | 1.60M | — | 149.8K | — |
| Manuel E PatrickDirector · 16 transactions | — | 403.9Kas of Jan 2006 | — | — | 50.0K |
| Hawk Philip JDirector · 127 transactions | — | 389.2K†as of Dec 2016 | 1.01M | 155.2K | 1.13M |
| Ott Jeffrey LPresident, TEAM PSL & Quest · 42 transactions | — | 365.1Kas of Nov 2020 | 71.5K | — | 59.7K |
| Waters Louis ADirector · 109 transactions | — | 250.2Kas of May 2021 | 154.3K | 67.5K | 673.4K |
| Gatti AmerinoChairman & CEO, Director · 12 transactions | — | 138.4Kas of Nov 2021 | 136.6K | 13.0K | — |
| Johnson Jack M JrDirector · 20 transactions | — | 137.5Kas of Sep 2014 | 78.0K | — | 77.7K |
| Williams Sidney BDirector · 30 transactions | — | 102.6Kas of Nov 2015 | 106.4K | — | 215.8K |
| Caliel Michael JDirector · 8 transactions | — | 91.7K | 58.7K | 27.4K | — |
| Murray James ChadwickPresident, MOS · 6 transactions | — | 83.4K†as of Nov 2021 | 5.2K | — | — |
| Wallace Peter W JrPresident, Mechanical Services · 37 transactions | — | 65.9K†as of Nov 2015 | 101.3K | — | 76.3K |
| Owen Ted WPresident & CEO, Director · 86 transactions | — | 62.8K†as of Nov 2016 | 230.0K | 2.7K | 186.7K |
| Tholan Kenneth MPresident · 24 transactions | — | 62.7Kas of Jan 2007 | 7.5K | — | 77.2K |
| Tucker Keith DCEO · 24 transactions | — | 52.5K† | 64.1K | — | — |
| Yesavage Gary GDirector · 7 transactions | — | 52.0Kas of May 2021 | 52.0K | — | — |
| Hill Gary L.Chief Executive Officer · 2 transactions | — | 51.7K | — | 12.1K | — |
| Foster Vincent DDirector · 20 transactions | — | 49.3Kas of May 2017 | 65.2K | — | — |
| Haight Nelson MChief Financial Officer · 9 transactions | — | 49.2K | 44.9K | — | — |
| Martin Craig LDirector · 5 transactions | — | 47.1Kas of May 2021 | 27.1K | 20.0K | — |
| Victorson Arthur FPresident, TeamQualspec · 55 transactions | — | 45.2K†as of Nov 2017 | 134.6K | — | 114.3K |
| Laborde E TheodoreDirector · 2 transactions | — | 45.1Kas of Jul 2006 | 399 | — | — |
| Lucas Michael AllanDirector · 7 transactions | — | 34.4Kas of May 2021 | 34.4K | — | — |
| Bouchard Andre CExec VP & Chief Legal Officer · 81 transactions | — | 33.5K†as of Nov 2024 | 141.5K | 3.8K | 35.5K |
| Kerrigan Sylvia JDirector · 6 transactions | — | 32.6Kas of May 2021 | 32.6K | — | — |
| Horton Anthony RDirector · 8 transactions | — | 28.1K | — | 34.1K | — |
| Ferraioli Brian KDirector · 4 transactions | — | 27.1Kas of May 2021 | 27.1K | — | — |
| Kearns John PSr. Vice President · 47 transactions | — | 24.3K†as of Nov 2012 | 174.6K | — | 195.5K |
| Boane Greg LExecutive Vice President & CFO · 14 transactions | — | 22.2K†as of Nov 2018 | 11.3K | 6.2K | — |
| Ball Susan M.Former EVP & CFO · 8 transactions | — | 19.6Kas of Nov 2021 | 18.5K | 6.5K | — |
| Skaggs Robert C JrDirector · 5 transactions | — | 19.5Kas of May 2021 | 17.5K | 2.0K | — |
| Palmore David CSr. Vice President · 41 transactions | — | 16.8K†as of Feb 2013 | 123.2K | — | 112.2K |
| Sides Sherri ASr VP, Chief HR Officer · 10 transactions | — | 15.5K†as of Nov 2021 | 13.9K | — | — |
| Stenger Edward J.Director · 6 transactions | — | 14.9K | 1.4K | 39.5K | — |
| Lescroart Emmett JDirector · 39 transactions | — | 12.6Kas of Nov 2020 | 138.2K | — | 272.4K |
| Roscoe Grant DPresident, Operations · 5 transactions | — | 12.2Kas of Nov 2020 | 14.6K | — | — |
| Young Robert James IIIPresident, AID · 5 transactions | — | 10.6Kas of Nov 2021 | 4.1K | — | — |
| Peiser Robert ADirector · 16 transactions | — | 10.0Kas of Nov 2012 | 41.7K | — | 32.0K |
| Davis Jeffery GeraldDirector · 27 transactions | — | 9.3K | 38.2K | 70.3K | 1.6K |
| Roeder Clinton WilliamChief Financial Officer · 2 transactions | — | 9.0K | — | 9.0K | — |
| Sangalis Gregory TSenior Vice Pres. Law & Admin. · 1 transaction | — | 8.9Kas of Feb 2006 | — | — | — |
| Lederman Evan S.Director · 17 transactions | — | 6.6K | — | 58.0K | 2.5K |
| McCloskey James PSr VP, Commercial · 5 transactions | — | 6.2Kas of Nov 2020 | 7.4K | — | — |
| Wood Michael RSr. Vice President, HSE · 5 transactions | — | 5.1Kas of Nov 2020 | 6.2K | — | — |
| Rushe Declan GPresident, Team Solutions · 3 transactions | — | 3.1Kas of Nov 2017 | 3.1K | — | — |
| Anderson J MichaelDirector · 1 transaction | — | 3.0Kas of Mar 2024 | — | 3.0K | — |
| McGinnis Pamela J.Director · 3 transactions | — | 1.3Kas of Aug 2025 | — | 1.3K | — |
| Acosta Matthew EVP & Chief Accounting Officer · 14 transactions | — | 736as of Nov 2024 | 4.6K | — | — |