MRSH's three largest insider shareholders as of September 09, 2026 are Peter J Beshar (Evp And General Counsel, 505.31K shares), John Q Doyle (President And Ceo, 116.81K shares), Daniel S Glaser (President And Ceo, Mmc, 101.07K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Peter J Beshar | Evp And General Counsel | 505,312 | 0 | 505,312 | 45.7% | 02 Mar, 2022 |
| 2 | John Q Doyle | President And Ceo | 116,811 | 0 | 116,811 | 10.6% | 03 Sep, 2026 |
| 3 | Daniel S Glaser | President And Ceo, Mmc | 101,074 | 0 | 101,074 | 9.1% | 08 Mar, 2022 |
| 4 | Marc D Oken | Director | 53,823 | 0 | 53,823 | 4.9% | 07 Dec, 2021 |
| 5 | Oscar Fanjul | Director | 43,986 | 0 | 43,986 | 4.0% | 15 May, 2025 |
| 6 | Bruce P Nolop | Director | 43,533 | 0 | 43,533 | 3.9% | 02 Jun, 2023 |
| 7 | Mark C Mcgivney | Chief Financial Officer | 42,469 | 0 | 42,469 | 3.8% | 03 Mar, 2026 |
| 8 | H Edward Hanway | Director | 36,868 | 0 | 36,868 | 3.3% | 03 Jun, 2026 |
| 9 | Nicholas Mark Studer | President And Ceo Of Owg | 32,536 | 0 | 32,536 | 2.9% | 04 Mar, 2026 |
| 10 | Dean Michael Klisura | President Ceo, Guy Carpenter | 25,129 | 0 | 25,129 | 2.3% | 03 Mar, 2026 |
| 11 | Martin South | Chief Client Officer | 16,632 | 0 | 16,632 | 1.5% | 29 Jul, 2026 |
| 12 | Paul Beswick | Svp, Chief Information Officer | 16,376 | 0 | 16,376 | 1.5% | 31 Jul, 2026 |
| 13 | Carmen Fernandez | Svp, Chief People Officer | 12,995 | 0 | 12,995 | 1.2% | 03 Mar, 2026 |
| 14 | Lloyd M Yates | Director | 12,001 | 0 | 12,001 | 1.1% | 24 Jul, 2026 |
| 15 | Martine Ferland | President And Ceo, Mercer | 9,979 | 0 | 9,979 | 0.9% | 06 Mar, 2024 |
| 16 | Katherine Brennan | Svp And General Counsel | 7,330 | 0 | 7,330 | 0.7% | 03 Sep, 2026 |
| 17 | Steven A Mills | Director | 5,952 | 0 | 5,952 | 0.5% | 18 Aug, 2026 |
| 18 | Judith Hartmann | Director | 4,323 | 0 | 4,323 | 0.4% | 03 Jun, 2026 |
| 19 | Patrick Tomlinson | President And Ceo, Mercer | 4,256 | 0 | 4,256 | 0.4% | 17 Mar, 2026 |
| 20 | Stacy Mills | Vice President And Controller | 4,151 | 0 | 4,151 | 0.4% | 03 Mar, 2026 |
| 21 | Hafize Gaye Erkan | Director | 2,346 | 0 | 2,346 | 0.2% | 02 Jun, 2023 |
| 22 | Anthony Anderson | Director | 2,000 | 0 | 2,000 | 0.2% | 31 Jul, 2025 |
| 23 | Bruce D Broussard | Director | 1,617 | 0 | 1,617 | 0.1% | 18 Aug, 2026 |
| 24 | John Jude Jones | Chief Marketing Officer | 1,478 | 0 | 1,478 | 0.1% | 07 Aug, 2026 |
| 25 | Ray G Young | Director | 1,248 | 0 | 1,248 | 0.1% | 02 Jun, 2023 |
| 26 | Peter Harrison | Director | 1,246 | 0 | 1,246 | 0.1% | 03 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 14 Aug, 2026 | Anthony Anderson | Director | Acquired J | 89 | $189.15 | $16.91K | 17,172 | Direct |
| 14 Aug, 2026 | Jane H Lute | Director | Acquired J | 47 | $189.15 | $8.82K | 8,958 | Direct |
| 14 Aug, 2026 | Lloyd M Yates | Director | Acquired J | 65 | $189.15 | $12.27K | 12,456 | Direct |
| 15 Aug, 2026 | Steven A Mills | Director | Acquired A | 194 | $188.45 | $36.56K | 5,952 | Direct |
| 14 Aug, 2026 | Morton O Schapiro | Director | Acquired J | 473 | $189.15 | $89.54K | 90,919 | Direct |
| 14 Aug, 2026 | Deborah C Hopkins | Director | Acquired J | 112 | $189.15 | $21.20K | 21,527 | Direct |
| 15 Aug, 2026 | Bruce D Broussard | Director | Acquired A | 192 | $188.45 | $36.18K | 1,617 | Direct |
| 14 Aug, 2026 | Tamara Ingram | Director | Acquired J | 48 | $189.15 | $9.00K | 9,134 | Direct |
| 15 Aug, 2026 | Lloyd M Yates | Director | Acquired A | 224 | $188.45 | $42.16K | 12,680 | Direct |
| 15 Aug, 2026 | Jane H Lute | Director | Acquired A | 144 | $188.45 | $27.19K | 9,103 | Direct |
| 15 Aug, 2026 | Morton O Schapiro | Director | Acquired A | 219 | $188.45 | $41.25K | 91,138 | Direct |
| 06 Aug, 2026 | John Jude Jones | Chief Marketing Officer | Disposed S | 6,500 | $191.96 | $1.25Mn | 1,478 | Direct |
| 29 Jul, 2026 | Paul Beswick | Svp, Chief Information Officer | Disposed S | 713 | $198.00 | $141.17K | 16,376 | Direct |
| 28 Jul, 2026 | Martin South | Chief Client Officer | Disposed S | 7,100 | $189.99 | $1.35Mn | 16,632 | Direct |
| 23 Jul, 2026 | Lloyd M Yates | Director | Disposed S | 12,000 | $175.65 | $2.11Mn | 12,001 | Direct |
| 01 Jun, 2026 | Tamara Ingram | Director | Acquired A | 1,350 | $159.28 | $215.00K | 9,086 | Direct |
| 01 Jun, 2026 | Morton O Schapiro | Director | Acquired A | 1,350 | $159.28 | $215.00K | 90,445 | Direct |
| 01 Jun, 2026 | Deborah C Hopkins | Director | Acquired A | 1,350 | $159.28 | $215.00K | 21,415 | Direct |
| 01 Jun, 2026 | H Edward Hanway | Director | Acquired A | 1,349 | $159.28 | $214.87K | 36,868 | Direct |
| 01 Jun, 2026 | Bruce D Broussard | Director | Acquired A | 1,349 | $159.28 | $214.87K | 1,425 | Direct |