| Willis Charles F IVExecutive Chairman, Director, 10% owner · 885 transactions | — | 8.94M† | 2.69M | 13.4K | 1.66M |
| Willis Austin ChandlerChief Executive Officer, Director, 10% owner · 268 transactions | — | 1.55M† | 372.0K | — | 253.6K |
| Jacobs SY10% owner · 3 transactions | — | 1.48M†as of Dec 2007 | — | 38.1K | — |
| Jacobs SY +1 co-filer10% owner · 69 transactions | — | 630.0K†as of Oct 2012 | — | 364.4K | 627.2K |
| Poulakidas Dean MichaelEVP, GEN. COUNSEL, SECRETARY · 45 transactions | — | 152.1Kas of May 2025 | 230.6K | — | — |
| Hole Brian RichardPRESIDENT · 106 transactions | — | 89.2K | 352.7K | 1.9K | 124.0K |
| Flaherty Scott B.EVP, CFO · 130 transactions | — | 81.4K | 285.5K | 3.4K | 100.0K |
| Beaumont Lee GEVP, COO · 17 transactions | — | 69.0Kas of Oct 2008 | 41.1K | 30.5K | — |
| Webber Judith MFormer Officer · 91 transactions | — | 48.0Kas of Aug 2015 | 136.2K | — | 63.8K |
| Nord Thomas CSVP, Gen. Counsel, Secretary · 111 transactions | — | 43.7Kas of Feb 2013 | 172.4K | 5.4K | 90.9K |
| Nunemaker Donald AFormer Officer · 406 transactions | — | 29.9Kas of Dec 2016 | 531.9K | 8.4K | 441.1K |
| Laviec GerardDirector · 78 transactions | — | 26.8Kas of Apr 2013 | 52.6K | — | 24.6K |
| Crews Jesse VanEVP, COO · 6 transactions | — | 25.0Kas of May 2011 | 15.9K | 1.5K | — |
| Hunziker Hans JorgSee Remarks · 156 transactions | — | 19.8Kas of May 2024 | 77.6K | 3.0K | 60.6K |
| Johnson Paul DavidSVP, Sales & Marketing · 4 transactions | — | 14.4Kas of Aug 2013 | 7.0K | — | — |
| Dameron CliftonSVP, GC & Corporate Secretary · 7 transactions | — | 14.3K | 10.3K | — | — |
| McKeating Rae AnnDirector · 11 transactions | — | 13.3Kas of Dec 2024 | 19.3K | — | 3.0K |
| Curran BrendanDirector · 4 transactions | — | 9.5K | 9.5K | — | — |
| Morris Robert TDirector · 95 transactions | — | 7.7Kas of May 2019 | 69.9K | — | 59.2K |
| Barrington ColmDirector · 5 transactions | — | 7.5K | 9.5K | — | 2.0K |
| Keady Robert J.See Remarks · 46 transactions | — | 4.0Kas of Sep 2024 | 32.8K | — | 34.1K |
| Jones Stephen FrancisDirector · 4 transactions | — | 2.1K | 2.7K | — | 587 |
| Warwick Robert MEVP, CFO · 4 transactions | — | 1.5Kas of Jan 2007 | 2.0K | 500 | — |
| Forsyth Bradley StewartFormer officer · 145 transactions | — | 1.4Kas of Jun 2016 | 179.9K | 34.7K | 119.4K |
| Coon W William JrFormer Director · 45 transactions | — | 0as of Mar 2015 | 45.4K | — | 45.4K |
| Leroy William MDirector · 59 transactions | — | 0as of Jun 2006 | 35.5K | — | 33.0K |
| Macaleavey Thomas ESVP, Sales & Marketing · 26 transactions | — | 0as of Apr 2007 | 30.0K | — | 30.0K |
| Hickerson Glenn LDirector · 3 transactions | — | 0as of Apr 2006 | 10.0K | 420 | 10.0K |
| Spaulding Anthony R.Former Officer · 8 transactions | — | 0as of May 2017 | 9.0K | — | 1.7K |