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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| MGRB | Horgen Jay C. | President and CEO | Jun 08 '26 | Sale | 338.27 | 17,500 | 5,919,725 | 204,706 | Jun 08 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Jun 08 '26 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 261,877 | Jun 08 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Jun 08 '26 | Sale | 338.27 | 17,500 | 5,919,725 | 204,706 | Jun 08 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Jun 08 '26 | Sale | 338.27 | 17,500 | 5,919,725 | 204,706 | Jun 08 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Jun 08 '26 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 261,877 | Jun 08 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Jun 08 '26 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 261,877 | Jun 08 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Jun 08 '26 | Sale | 338.27 | 17,500 | 5,919,725 | 204,706 | Jun 08 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Jun 08 '26 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 261,877 | Jun 08 12:00 AM |
| AMG | Horgen Jay C. | Chief Executive Officer | Mar 05 '26 | Option Exercise | 0.00 | 35,126 | 0 | 327,950 | Mar 09 12:00 AM |
| MGRE | Horgen Jay C. | Chief Executive Officer | Mar 05 '26 | Option Exercise | 0.00 | 35,126 | 0 | 327,950 | Mar 09 12:00 AM |
| MGRD | Horgen Jay C. | Chief Executive Officer | Mar 05 '26 | Option Exercise | 0.00 | 35,126 | 0 | 327,950 | Mar 09 12:00 AM |
| MGRB | Horgen Jay C. | Chief Executive Officer | Mar 05 '26 | Option Exercise | 0.00 | 35,126 | 0 | 327,950 | Mar 09 12:00 AM |
| AMG | Horgen Jay C. | Chief Executive Officer | Sep 02 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 559,322 | Sep 04 12:00 AM |
| MGRD | Horgen Jay C. | Chief Executive Officer | Sep 02 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 559,322 | Sep 04 12:00 AM |
| MGRB | Horgen Jay C. | Chief Executive Officer | Sep 02 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 559,322 | Sep 04 12:00 AM |
| MGRE | Horgen Jay C. | Chief Executive Officer | Sep 02 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 559,322 | Sep 04 12:00 AM |
| MGRE | Horgen Jay C. | Chief Executive Officer | Aug 12 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 529,929 | Aug 14 12:00 AM |
| AMG | Horgen Jay C. | Chief Executive Officer | Aug 12 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 529,929 | Aug 14 12:00 AM |
| MGRB | Horgen Jay C. | Chief Executive Officer | Aug 12 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 529,929 | Aug 14 12:00 AM |
| MGRD | Horgen Jay C. | Chief Executive Officer | Aug 12 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 529,929 | Aug 14 12:00 AM |
| AMG | Horgen Jay C. | Chief Executive Officer | Jul 01 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 516,120 | Jul 03 12:00 AM |
| MGRD | Horgen Jay C. | Chief Executive Officer | Jul 01 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 516,120 | Jul 03 12:00 AM |
| MGRB | Horgen Jay C. | Chief Executive Officer | Jul 01 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 516,120 | Jul 03 12:00 AM |
| MGRE | Horgen Jay C. | Chief Executive Officer | Jul 01 '25 | Option Exercise | 74.49 | 150,000 | 11,173,500 | 516,120 | Jul 03 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Mar 05 '25 | Option Exercise | 0.00 | 33,386 | 0 | 419,439 | Mar 07 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Mar 05 '25 | Option Exercise | 0.00 | 33,386 | 0 | 419,439 | Mar 07 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Mar 05 '25 | Option Exercise | 0.00 | 33,386 | 0 | 419,439 | Mar 07 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Mar 05 '25 | Option Exercise | 0.00 | 33,386 | 0 | 419,439 | Mar 07 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Oct 02 '24 | Option Exercise | 74.49 | 200,000 | 14,898,000 | 467,976 | Oct 04 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Oct 02 '24 | Option Exercise | 74.49 | 200,000 | 14,898,000 | 467,976 | Oct 04 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Oct 02 '24 | Option Exercise | 74.49 | 200,000 | 14,898,000 | 467,976 | Oct 04 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Oct 02 '24 | Option Exercise | 74.49 | 200,000 | 14,898,000 | 467,976 | Oct 04 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Aug 20 '24 | Sale | 169.93 | 9,300 | 1,580,349 | 367,976 | Aug 20 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Aug 20 '24 | Sale | 169.93 | 9,300 | 1,580,349 | 367,976 | Aug 20 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Aug 20 '24 | Sale | 169.93 | 9,300 | 1,580,349 | 367,976 | Aug 20 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Aug 20 '24 | Sale | 169.93 | 9,300 | 1,580,349 | 367,976 | Aug 20 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Aug 19 '24 | Option Exercise | 74.49 | 400,000 | 29,796,000 | 519,004 | Aug 20 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Aug 19 '24 | Option Exercise | 74.49 | 400,000 | 29,796,000 | 519,004 | Aug 20 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Aug 19 '24 | Sale | 171.98 | 9,000 | 1,547,820 | 377,276 | Aug 20 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Aug 19 '24 | Sale | 171.98 | 9,000 | 1,547,820 | 377,276 | Aug 20 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Aug 19 '24 | Option Exercise | 74.49 | 400,000 | 29,796,000 | 519,004 | Aug 20 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Aug 19 '24 | Sale | 171.98 | 9,000 | 1,547,820 | 377,276 | Aug 20 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Aug 19 '24 | Option Exercise | 74.49 | 400,000 | 29,796,000 | 519,004 | Aug 20 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Aug 19 '24 | Sale | 171.98 | 9,000 | 1,547,820 | 377,276 | Aug 20 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Mar 05 '24 | Option Exercise | 0.00 | 25,534 | 0 | 310,674 | Mar 07 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Mar 05 '24 | Option Exercise | 0.00 | 25,534 | 0 | 310,674 | Mar 07 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Mar 05 '24 | Option Exercise | 0.00 | 25,534 | 0 | 310,674 | Mar 07 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Mar 05 '24 | Option Exercise | 0.00 | 25,534 | 0 | 310,674 | Mar 07 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Jan 01 '24 | Option Exercise | 0.00 | 11,584 | 0 | 300,272 | Jan 03 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Jan 01 '24 | Option Exercise | 0.00 | 11,584 | 0 | 300,272 | Jan 03 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Jan 01 '24 | Option Exercise | 0.00 | 11,584 | 0 | 300,272 | Jan 03 12:00 AM |
| MGR | Horgen Jay C. | President and CEO | Jan 01 '24 | Option Exercise | 0.00 | 11,584 | 0 | 300,272 | Jan 03 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Jan 01 '24 | Option Exercise | 0.00 | 11,584 | 0 | 300,272 | Jan 03 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Aug 15 '23 | Option Exercise | 0.00 | 95,980 | 0 | 314,015 | Aug 17 12:00 AM |
| MGRD | Horgen Jay C. | President and CEO | Aug 15 '23 | Option Exercise | 0.00 | 95,980 | 0 | 314,015 | Aug 17 12:00 AM |
| AMG | Horgen Jay C. | President and CEO | Aug 15 '23 | Option Exercise | 0.00 | 95,980 | 0 | 314,015 | Aug 17 12:00 AM |
| MGRE | Horgen Jay C. | President and CEO | Aug 15 '23 | Option Exercise | 0.00 | 95,980 | 0 | 314,015 | Aug 17 12:00 AM |
| MGR | Horgen Jay C. | President and CEO | Aug 15 '23 | Option Exercise | 0.00 | 95,980 | 0 | 314,015 | Aug 17 12:00 AM |
| MGR | Horgen Jay C. | President and CEO | Mar 05 '23 | Option Exercise | 0.00 | 15,748 | 0 | 293,912 | Mar 07 12:00 AM |
| MGRB | Horgen Jay C. | President and CEO | Mar 05 '23 | Option Exercise | 0.00 | 7,874 | 0 | 293,912 | Mar 07 12:00 AM |