| Gallagher Robert EChairman, Director · 1 transaction | — | 2.62M†as of Mar 2006 | 8.6K | — | — |
| Gallagher J Patrick JrCEO, Director · 283 transactions | — | 1.50M† | 2.63M | 59.1K | 325.8K |
| Gallagher Thomas JosephPresident · 135 transactions | — | 1.08M† | 837.3K | 4.0K | 175.6K |
| Durkin James W JrVice President · 84 transactions | — | 315.0Kas of Jan 2018 | 358.5K | — | 200.0K |
| Cavaness Joel DVice President · 92 transactions | — | 306.3K†as of May 2024 | 388.6K | — | 136.1K |
| Gallagher Patrick MurphyChief Operating Officer · 52 transactions | — | 232.3K† | 49.9K | 1.1K | 11.4K |
| Howell Douglas KVP & Chief Financial Officer · 213 transactions | — | 220.3K† | 1.28M | 9.9K | 544.7K |
| McGurn David E JrVice President · 80 transactions | — | 205.8K†as of Feb 2016 | 303.9K | — | 215.0K |
| Gault James SVice President · 85 transactions | — | 178.3K†as of Dec 2017 | 513.4K | — | 164.0K |
| McKenna Richard JVice President · 27 transactions | — | 164.5K†as of Aug 2009 | 44.5K | — | 83.6K |
| Pesch Michael RobertVice President · 14 transactions | — | 96.0K† | 17.2K | 4.1K | 7.1K |
| Hudson Scott RVice President · 119 transactions | — | 90.7K† | 669.2K | — | 237.2K |
| McGrath Susan EChief Human Resources Officer · 48 transactions | — | 83.1K†as of Aug 2014 | 165.8K | — | 60.8K |
| Bay Walter D.General Counsel · 172 transactions | — | 71.8K† | 724.4K | — | 226.7K |
| Jain VishalVICE PRESIDENT · 58 transactions | — | 67.3K† | 155.8K | — | — |
| Rosengren John CVP, Gen. Counsel & Secretary · 8 transactions | — | 49.9K†as of May 2007 | 3.5K | — | 3.2K |
| Ziebell William FVICE PRESIDENT · 69 transactions | — | 49.2K† | 337.4K | — | 121.3K |
| Cary Richard CController, CAO · 143 transactions | — | 48.2K† | 240.7K | — | 162.7K |
| Johnson David SDirector · 82 transactions | — | 47.4K | 143.2K | — | 53.9K |
| Rosenthal Norman LDirector · 48 transactions | — | 43.3K | 84.3K | — | 18.8K |
| Brinkerhoff ElizabethVice President · 2 transactions | — | 23.1Kas of Jun 2006 | 3.6K | — | 2.1K |
| Mead Christopher EVICE PRESIDENT · 54 transactions | — | 22.6K† | 122.7K | — | 24.9K |
| Gordon Ilene SDirector · 34 transactions | — | 21.7Kas of May 2013 | 105.7K | — | 137.4K |
| Brooker T KimballDirector · 9 transactions | — | 20.7K†as of Jan 2010 | 85.8K | — | — |
| Nicoletti Ralph JDirector · 28 transactions | — | 18.4K | 46.3K | — | — |
| Barrat Sherry SDirector · 36 transactions | — | 18.1Kas of May 2025 | 51.5K | 1.6K | 6.2K |
| Wimmer James RDirector · 69 transactions | — | 17.7K†as of May 2014 | 158.8K | — | 182.1K |
| Pietrucha Susan EChief Human Resources Officer · 130 transactions | — | 16.8K† | 424.3K | — | 213.1K |
| Coldman David JohnDirector · 40 transactions | — | 16.3K | 57.4K | — | — |
| Miskel Christopher C.Director · 20 transactions | — | 10.6K | 18.3K | — | — |
| Coughlan Gary P/PaDirector · 2 transactions | — | 6.5Kas of May 2007 | 8.0K | — | — |
| Clarke Teresa HillaryDirector · 12 transactions | — | 5.6K | 11.2K | — | — |
| Caplan Deborah HDirector · 3 transactions | — | 2.6K | 2.6K | — | — |
| Harries Richard de Winton WilkinDirector · 4 transactions | — | 2.4K | 2.5K | — | — |
| Hand Elbert ODirector · 44 transactions | — | 2.1Kas of May 2018 | 141.5K | — | 99.1K |
| English Frank E. Jr.Director · 43 transactions | — | 1.9Kas of Nov 2020 | 64.6K | 10.3K | 48.9K |
| Bloom Mark H.Vice President · 4 transactions | — | 193.26† | 10.5K | — | — |
| McCurdy Kay WDirector · 67 transactions | — | 0as of May 2023 | 102.0K | 2.0K | 45.5K |
| Bax William LDirector · 50 transactions | — | 0as of May 2024 | 85.6K | 8.9K | 20.3K |