AFFILIATED MANAGERS GROUP, INC. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Horgen Jay C. | Chief Executive Officer | Gift | 4,000 | — | — | 510,387 | Dec 23, 2025 |
| Palandjian Tracy P. | — | Gift | 3,499 | — | — | 14,387 | Nov 25, 2025 |
| Alvingham Karen L. | — | Option Exercise | 560 | $69.63 | $38,993 | 12,425 | Nov 7, 2025 |
| Wojcik Thomas M | President and COO | Option Exercise | 169,303 | $74.49 | $12,611,380 | 288,718 | Sep 9, 2025 |
| Horgen Jay C. | Chief Executive Officer | Tax Withholding | 44,935 | $229.97 | $10,333,702 | 514,387 | Sep 2, 2025 |
| Padiyar Kavita | General Counsel & Corp. Sec. | Tax Withholding | 30,991 | $229.97 | $7,127,000 | 42,440 | Sep 2, 2025 |
| Churchill Dwight D. | — | Option Exercise | 1,398 | — | — | 29,030 | Aug 15, 2025 |
| Ryan David Christopher | — | Option Exercise | 1,092 | — | — | 3,627 | Aug 15, 2025 |
| STARR LOREN M | — | Option Exercise | 544 | — | — | 1,285 | Aug 15, 2025 |
| Alvingham Karen L. | — | Option Exercise | 1,092 | — | — | 11,949 | Aug 15, 2025 |
| FRANQUI ANNETTE | — | Option Exercise | 664 | — | — | 664 | Aug 15, 2025 |
| Matos Rodriguez Felix V. | — | Option Exercise | 1,102 | — | — | 4,502 | Aug 15, 2025 |
| Palandjian Tracy P. | — | Option Exercise | 1,117 | — | — | 17,886 | Aug 15, 2025 |
| Horgen Jay C. | Chief Executive Officer | Option Exercise | 75,000 | $74.49 | $5,586,750 | 529,929 | Aug 12, 2025 |
| Horgen Jay C. | Chief Executive Officer | Gift | 14,000 | — | — | 34,058 | Jul 1, 2025 |
| Churchill Dwight D. | — | Tax Withholding | 1,178 | $183.83 | $216,552 | 27,632 | May 12, 2025 |
| Palandjian Tracy P. | — | Option Exercise | 1,361 | $86.78 | $118,108 | 19,660 | May 12, 2025 |
| Padiyar Kavita | General Counsel & Corp. Sec. | Tax Withholding | 17,407 | $179.17 | $3,118,812 | 25,700 | May 9, 2025 |
| Horgen Jay C. | President and CEO | Award / Grant | 48,251 | — | — | 467,690 | Mar 5, 2025 |
| Padiyar Kavita | General Counsel & Corp. Sec. | Option Exercise | 2,236 | — | — | 17,485 | Mar 5, 2025 |
| Wojcik Thomas M | Chief Operating Officer | Option Exercise | 7,287 | — | — | 113,080 | Mar 5, 2025 |
| Alvingham Karen L. | — | Tax Withholding | 90 | $165.72 | $14,915 | 10,857 | Mar 5, 2025 |
| Churchill Dwight D. | — | Option Exercise | 1,535 | — | — | 27,457 | Mar 5, 2025 |
| Matos Rodriguez Felix V. | — | Option Exercise | 1,165 | — | — | 3,400 | Mar 5, 2025 |
| Palandjian Tracy P. | — | Option Exercise | 1,195 | — | — | 15,159 | Mar 5, 2025 |
| Ryan David Christopher | — | Option Exercise | 956 | — | — | 2,535 | Mar 5, 2025 |
| STARR LOREN M | — | Option Exercise | 741 | — | — | 741 | Mar 5, 2025 |
| Churchill Dwight D. | — | Option Exercise | 191 | — | — | 25,922 | Jan 1, 2025 |
| Jeffery Reuben III | — | Option Exercise | 5 | — | — | 34,274 | Jan 1, 2025 |
| Palandjian Tracy P. | — | Option Exercise | 31 | — | — | 13,964 | Jan 1, 2025 |
| Jamal Rizwan M | Head of Affiliate Investments | Gift | 128,457 | — | — | — | Oct 16, 2024 |
| Wojcik Thomas M | Chief Operating Officer | Tax Withholding | 53,599 | $181.18 | $9,711,067 | 105,793 | Oct 4, 2024 |
| Horgen Jay C. | President and CEO | Option Exercise | 100,000 | $74.49 | $7,449,000 | 467,976 | Oct 2, 2024 |
| Horgen Jay C. | President and CEO | Option Exercise | 200,000 | $74.49 | $14,898,000 | 519,004 | Aug 19, 2024 |
| Wojcik Thomas M | Chief Operating Officer | Option Exercise | 127,500 | $74.49 | $9,497,475 | 184,667 | Aug 16, 2024 |
| Jamal Rizwan M | Head of Affiliate Investments | Tax Withholding | 303,224 | $172.25 | $52,230,334 | 137,079 | Aug 16, 2024 |
| Palandjian Tracy P. | — | Option Exercise | 1,020 | — | — | 13,933 | Aug 15, 2024 |
| Jeffery Reuben III | — | Option Exercise | 1,075 | — | — | 34,269 | Aug 15, 2024 |
| Matos Rodriguez Felix V. | — | Option Exercise | 556 | — | — | 2,235 | Aug 15, 2024 |
| Churchill Dwight D. | — | Option Exercise | 1,328 | — | — | 25,731 | Aug 15, 2024 |
| Ryan David Christopher | — | Option Exercise | 545 | — | — | 1,579 | Aug 15, 2024 |
| Alvingham Karen L. | — | Tax Withholding | 72 | $171.98 | $12,383 | 9,769 | Aug 15, 2024 |
| Alvingham Karen L. | — | Option Exercise | 1,353 | $160.01 | $216,494 | 5,615 | Jul 31, 2024 |
| Palandjian Tracy P. | — | Tax Withholding | 608 | $185.62 | $112,857 | 12,913 | Jul 31, 2024 |
| Churchill Dwight D. | — | Option Exercise | 1,787 | $110.02 | $196,606 | 21,807 | Mar 28, 2024 |
| Horgen Jay C. | President and CEO | Option Exercise | 12,767 | — | — | 310,674 | Mar 5, 2024 |
| Jamal Rizwan M | Head of Affiliate Investments | Award / Grant | 13,244 | — | — | 21,146 | Mar 5, 2024 |
| Wojcik Thomas M | Chief Financial Officer | Option Exercise | 5,678 | — | — | 53,539 | Mar 5, 2024 |
| Ryan David Christopher | — | Option Exercise | 317 | — | — | 1,034 | Mar 5, 2024 |
| Palandjian Tracy P. | — | Option Exercise | 555 | — | — | 12,221 | Mar 5, 2024 |