| 2025-12-01 | Doyle John Q | President and CEO | Sale+OE | 21,079 | $182.22 | $3,841,015.38 | -19.4% | → |
| 2025-09-02 | Doyle John Q | President and CEO | Sale+OE | 21,079 | $205.65 | $4,334,896.35 | -19.4% | → |
| 2025-07-30 | Anderson Anthony | Director | Buy | 1,000 | $201.61 | $201,612.50 | +40.0% | → |
| 2025-06-02 | Doyle John Q | President and CEO | Sale+OE | 21,080 | $232.05 | $4,891,614.00 | -19.4% | → |
| 2025-04-03 | Beswick Paul | SVP, Chief Information Officer | Sale+OE | 2,237 | $246.00 | $550,302.00 | -14.2% | → |
| 2025-03-31 | Klisura Dean Michael | President & CEO, Guy Carpenter | Sale+OE | 9,569 | $245.00 | $2,344,405.00 | -31.4% | → |
| 2025-03-12 | Studer Nicholas Mark | President and CEO of OWG | Sale+OE | 49,390 | $230.16 | $11,367,745.63 | -63.5% | → |
| 2025-03-10 | Klisura Dean Michael | President & CEO, Guy Carpenter | Sell | 7,121 | $234.97 | $1,673,221.37 | -25.4% | → |
| 2025-03-10 | Mills Stacy | Vice President and Controller | Sell | 1,317 | $234.97 | $309,455.49 | -31.1% | → |
| 2025-03-10 | MCGIVNEY MARK C | Chief Financial Officer | Sell | 10,510 | $234.97 | $2,469,534.70 | -23.8% | → |
| 2025-03-06 | Jones John Jude | Chief Marketing Officer | Sale+OE | 10,824 | $235.14 | $2,545,205.66 | -31.1% | → |
| 2025-03-04 | South Martin | President & CEO, Marsh | Sale+OE | 26,476 | $239.59 | $6,343,334.24 | -23.2% | → |
| 2025-03-03 | Studer Nicholas Mark | President and CEO of OWG | Sale+OE | 3,649 | $238.74 | $871,151.31 | -25.4% | → |
| 2025-03-03 | Doyle John Q | President and CEO | Sale+OE | 21,080 | $237.05 | $4,997,014.00 | -19.4% | → |
| 2024-10-31 | FANJUL OSCAR | Director | Sell | 5,000 | $221.05 | $1,105,225.00 | -5.0% | → |
| 2024-09-05 | Beswick Paul | SVP, Chief Information Officer | Sale+OE | 2,169 | $232.00 | $503,208.00 | -16.9% | → |
| 2024-08-22 | MCGIVNEY MARK C | Chief Financial Officer | Sale+OE | 50,928 | $225.22 | $11,470,126.39 | -60.2% | → |
| 2024-08-14 | FANJUL OSCAR | Director | Sell | 2,500 | $219.33 | $548,327.75 | -4.7% | → |
| 2024-08-05 | MCGIVNEY MARK C | Chief Financial Officer | Sale+OE | 15,465 | $225.95 | $3,494,264.43 | -9.8% | → |
| 2024-08-02 | Mills Stacy | Vice President and Controller | Sale+OE | 4,101 | $225.77 | $925,882.77 | -58.4% | → |
| 2024-07-16 | Beswick Paul | SVP, Chief Information Officer | Sale+OE | 2,169 | $220.00 | $477,180.00 | -15.5% | → |
| 2024-06-13 | FANJUL OSCAR | Director | Sell | 6,000 | $209.01 | $1,254,070.00 | -3.5% | → |
| 2024-05-17 | Beswick Paul | SVP, Chief Information Officer | Sale+OE | 2,169 | $210.13 | $455,771.97 | -14.3% | → |
| 2024-03-14 | Mills Stacy | Vice President and Controller | Sell | 1,461 | $209.16 | $305,582.76 | -33.3% | → |
| 2024-03-08 | Klisura Dean Michael | President & CEO, Guy Carpenter | Sale+OE | 9,994 | $205.00 | $2,048,770.00 | -32.3% | → |
| 2024-03-07 | Jones John Jude | Chief Marketing Officer | Sell | 1,505 | $203.67 | $306,523.35 | -15.9% | → |
| 2024-03-06 | South Martin | President & CEO, Marsh | Sale+OE | 14,685 | $203.43 | $2,987,315.86 | -33.4% | → |
| 2024-03-05 | Ferland Martine | President and CEO, Mercer | Sell | 9,128 | $201.63 | $1,840,435.74 | -47.8% | → |
| 2024-03-05 | Beswick Paul | SVP, Chief Information Officer | Sale+OE | 4,338 | $201.40 | $873,651.51 | -6.6% | → |
| 2024-03-04 | MCGIVNEY MARK C | Chief Financial Officer | Sell | 12,494 | $200.79 | $2,508,670.26 | -27.1% | → |
| 2024-03-04 | Klisura Dean Michael | President & CEO, Guy Carpenter | Sell | 2,536 | $200.79 | $509,203.44 | -10.8% | → |
| 2024-02-29 | Studer Nicholas Mark | President and CEO of OWG | Sale+OE | 1,021 | $201.90 | $206,142.96 | -18.3% | → |
| 2023-11-28 | FANJUL OSCAR | Director | Sell | 5,000 | $200.17 | $1,000,850.00 | -7.9% | → |
| 2023-11-03 | Jones John Jude | Chief Marketing Officer | Sale+OE | 4,908 | $193.08 | $947,651.85 | -38.1% | → |