List of insiders holdings for Acumen Pharmaceuticals Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | RA CAPITAL MANAGEMENT L.P. RA Capital Healthcare Fund LP RA Capital Nexus Fund II L.P. Kolchinsky Peter Shah Rajeev M. Director 10% Owner | 2025-06-05 18:12:53 | 0 14,964,363 | 14,964,363 | Form 4 |
| 2 | Sands Capital Ventures Discovery Fund III L.P. Sands Capital Global Venture Fund II L.P. Sands Capital Life Sciences Pulse Fund LLC SANDS FRANK M. 10% Owner | 2021-07-12 21:08:28 | 3,417,075 0 | 3,417,075 | Form 13G |
| 3 | Manning Paul B 10% Owner | 2023-02-14 16:24:08 | 3,205,128 0 | 3,205,128 | Form 13G |
| 4 | OConnell Daniel Joseph Chief Executive Officer | 2026-01-23 18:10:48 | 881,275 0 | 881,275 | Form 4 |
| 5 | Hardie Robert D. 10% Owner | 2021-07-08 18:15:57 | 0 657,985 | 657,985 | Form 4 |
| 6 | Doherty James J. President and CDO | 2026-01-21 18:29:25 | 471,200 0 | 471,200 | Form 4 |
| 7 | Zuga Matt CFO & Chief Business Officer | 2026-01-23 18:11:25 | 304,924 0 | 304,924 | Form 4 |
| 8 | Siemers Eric Chief Medical Officer | 2026-01-23 18:12:03 | 255,371 0 | 255,371 | Form 4 |
| 9 | Meisner Derek M Chief Legal Officer & Corp Sec | 2026-03-10 21:45:26 | 245,047 0 | 245,047 | Form 4 |
| 10 | Schacterle Amy Chief Regulatory Officer | 2026-01-21 18:29:51 | 219,203 0 | 219,203 | Form 4 |
| 11 | Barton Russell Chief Operating Officer | 2026-01-23 18:10:06 | 205,092 0 | 205,092 | Form 4 |
| 12 | Stalfort John A III Director | 2025-06-05 16:59:03 | 204,624 0 | 204,624 | Form 4 |
| 13 | Golumbeski George Director | 2025-11-10 16:49:06 | 50,000 0 | 50,000 | Form 4 |
| 14 | Fountain Nathan B Director | 2025-06-05 16:57:56 | 38,550 0 | 38,550 | Form 4 |
| 15 | Stoppel Laura Director | 2025-06-05 18:05:34 | 32,300 0 | 32,300 | Form 4 |
| 16 | Drapkin Kimberlee C Director | 2025-06-05 16:57:43 | 32,300 0 | 32,300 | Form 4 |
| 17 | Ives Jeffrey L. Director | 2025-06-05 16:52:10 | 32,300 0 | 32,300 | Form 4 |
| 18 | Porter Derrell Director | 2025-06-05 16:51:20 | 32,300 0 | 32,300 | Form 4 |
| 19 | Sevigny Jeffrey Director | 2022-06-17 16:24:07 | 25,000 0 | 25,000 | Form 4 |