Insider holders · CIK 0001576885
Acumen Pharmaceuticals, Inc. · ABOS
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| RA Capital Nexus Fund II, L.P.Director | — | 588,850 | 588,850 | Jun 5, 2026 · 5:12 pm EDT | Form 4 |
| Rajeev M. ShahDirector | — | 588,850 | 588,850 | Jun 5, 2026 · 5:12 pm EDT | Form 4 |
| Peter KolchinskyDirector | — | 588,850 | 588,850 | Jun 5, 2026 · 5:12 pm EDT | Form 4 |
| RA CAPITAL MANAGEMENT, L.P.Director | — | 588,850 | 588,850 | Jun 5, 2026 · 5:12 pm EDT | Form 4 |
| RA Capital Healthcare Fund LPDirector | — | 588,850 | 588,850 | Jun 5, 2026 · 5:12 pm EDT | Form 4 |
| John A Stalfort IIIDirector | 220,624 | — | 220,624 | Jun 5, 2026 · 4:30 pm EDT | Form 4 |
| Laura StoppelDirector | 48,300 | — | 48,300 | Jun 5, 2026 · 4:27 pm EDT | Form 4 |
| Jeffrey L. IvesDirector | 48,300 | — | 48,300 | Jun 5, 2026 · 4:29 pm EDT | Form 4 |
| Kimberlee C DrapkinDirector | 48,300 | — | 48,300 | Jun 5, 2026 · 4:31 pm EDT | Form 4 |
| Nathan B FountainDirector | 48,150 | — | 48,150 | Jun 10, 2026 · 4:51 pm EDT | Form 4 |
| Derrell PorterDirector | 35,500 | — | 35,500 | Jun 17, 2026 · 5:10 pm EDT | Form 4 |
| George GolumbeskiDirector | 35,500 | — | 35,500 | Jun 5, 2026 · 4:28 pm EDT | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.