As of September 29, 2026, the three largest insider holders of APAM are Eric R Colson (Executive Chair, 368.61K shares), Tench Coxe (Director, 324.23K shares), Jason A Gottlieb (Ceo And President, 228.35K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Eric R Colson | Executive Chair | 368,607 | 0 | 368,607 | 19.7% | 02 Mar, 2026 |
| 2 | Tench Coxe | Director | 324,227 | 0 | 324,227 | 17.4% | 30 Jan, 2025 |
| 3 | Jason A Gottlieb | Ceo And President | 228,352 | 0 | 228,352 | 12.2% | 02 Mar, 2026 |
| 4 | Gregory K Ramirez | Executive Vice President | 178,978 | 0 | 178,978 | 9.6% | 20 Aug, 2026 |
| 5 | Christopher J Krein | Executive Vice President | 124,209 | 0 | 124,209 | 6.6% | 02 Mar, 2026 |
| 6 | Charles J Jr Daley | Exec Vp, Cfo Treasurer | 110,801 | 0 | 110,801 | 5.9% | 02 Mar, 2026 |
| 7 | Eileen Lee Kwei | Executive Vice President | 79,819 | 0 | 79,819 | 4.3% | 02 Mar, 2026 |
| 8 | Jeffrey A Joerres | Director | 77,157 | 0 | 77,157 | 4.1% | 30 Jan, 2026 |
| 9 | Sarah A Johnson | Exec Vp, Clo Secretary | 71,591 | 0 | 71,591 | 3.8% | 01 Mar, 2022 |
| 10 | Andrew A Ziegler | Director | 53,897 | 0 | 53,897 | 2.9% | 26 Jan, 2023 |
| 11 | Samuel Bentson Sellers | Executive Vice President | 53,547 | 0 | 53,547 | 2.9% | 02 Mar, 2026 |
| 12 | Stephanie Dimarco | Director | 49,964 | 0 | 49,964 | 2.7% | 30 Jan, 2026 |
| 13 | Laura Ellen Simpson | Exec Vp, Clo Secretary | 42,139 | 0 | 42,139 | 2.3% | 02 Mar, 2026 |
| 14 | Matthew R Barger | Director | 35,368 | 0 | 35,368 | 1.9% | 30 Jan, 2026 |
| 15 | Saloni S Multani | Director | 29,327 | 0 | 29,327 | 1.6% | 30 Jan, 2026 |
| 16 | Jennifer Barbetta | Director | 27,727 | 0 | 27,727 | 1.5% | 30 Jan, 2026 |
| 17 | Peter B. Crawford | Director | 5,752 | 0 | 5,752 | 0.3% | 30 Jan, 2026 |
| 18 | Hoff Ryan George Von | Chief Accounting Officer | 3,828 | 0 | 3,828 | 0.2% | 02 Mar, 2026 |
| 19 | Clarence Kane Brenan | Director | 2,876 | 0 | 2,876 | 0.2% | 30 Jan, 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 |
|---|---|---|---|---|---|---|---|---|
| 19 Aug, 2026 | Gregory K Ramirez | Executive Vice President | Disposed S | 7,000 | $42.59 | $298.14K | 109,194 | Direct |
| 02 Mar, 2026 | Laura Ellen Simpson | Exec Vp, Clo Secretary | Acquired A | 10,682 | $0.00 | $0 | 42,139 | Direct |
| 02 Mar, 2026 | Gregory K Ramirez | Executive Vice President | Acquired A | 13,858 | $0.00 | $0 | 116,194 | Direct |
| 02 Mar, 2026 | Hoff Ryan George Von | Chief Accounting Officer | Acquired A | 1,134 | $0.00 | $0 | 3,828 | Direct |
| 02 Mar, 2026 | Charles J Jr Daley | Exec Vp, Cfo Treasurer | Acquired A | 19,438 | $0.00 | $0 | 110,801 | Direct |
| 02 Mar, 2026 | Eric R Colson | Executive Chair | Acquired A | 44,410 | $0.00 | $0 | 368,607 | Direct |
| 02 Mar, 2026 | Samuel Bentson Sellers | Executive Vice President | Acquired A | 13,375 | $0.00 | $0 | 51,272 | Direct |
| 02 Mar, 2026 | Eileen Lee Kwei | Executive Vice President | Acquired A | 13,783 | $0.00 | $0 | 77,544 | Direct |
| 02 Mar, 2026 | Jason A Gottlieb | Ceo And President | Acquired A | 36,880 | $0.00 | $0 | 228,352 | Direct |
| 02 Mar, 2026 | Christopher J Krein | Executive Vice President | Acquired A | 22,816 | $0.00 | $0 | 124,209 | Direct |
| 02 Mar, 2026 | Eileen Lee Kwei | Executive Vice President | Acquired A | 2,275 | $0.00 | $0 | 2,275 | Direct |
| 02 Mar, 2026 | Samuel Bentson Sellers | Executive Vice President | Acquired A | 2,275 | $0.00 | $0 | 2,275 | Direct |
| 02 Mar, 2026 | Eileen Lee Kwei | Executive Vice President | Acquired A | 2,275 | — | — | 2,275 | Direct |
| 02 Mar, 2026 | Samuel Bentson Sellers | Executive Vice President | Acquired A | 2,275 | — | — | 2,275 | Direct |
| 17 Feb, 2026 | Hoff Ryan George Von | Chief Accounting Officer | Disposed F | 324 | $42.38 | $13.73K | 2,694 | Direct |
| 17 Feb, 2026 | Christopher J Krein | Executive Vice President | Disposed F | 3,000 | $42.38 | $127.14K | 101,393 | Direct |
| 17 Feb, 2026 | Eileen Lee Kwei | Executive Vice President | Disposed F | 4,246 | $42.38 | $179.95K | 63,761 | Direct |
| 17 Feb, 2026 | Jason A Gottlieb | Ceo And President | Disposed F | 5,189 | $42.38 | $219.91K | 191,472 | Direct |
| 17 Feb, 2026 | Laura Ellen Simpson | Exec Vp, Clo Secretary | Disposed F | 1,686 | $42.38 | $71.45K | 31,457 | Direct |
| 17 Feb, 2026 | Samuel Bentson Sellers | Executive Vice President | Disposed F | 2,632 | $42.38 | $111.54K | 37,897 | Direct |