Company · CIK 0001576885 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq
Acumen Pharmaceuticals, Inc. · ABOS
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jun 15, 2026 SForm 4 → | Jun 17, 5:10 pm EDT | Derrell PorterDirector | 32,300 | $2.33 | $75,240 | 35,500 | −47.6% | |
| Jun 15, 2026 MForm 4 → | Jun 17, 5:10 pm EDT | Derrell PorterDirector | 19,500 | $1.07 | $20,865 | 48,540 | — | |
| Jun 9, 2026 SForm 4 → | Jun 10, 4:51 pm EDT | Nathan B FountainDirector | 6,400 | $2.23 | $14,273 | 48,150 | −11.7% | |
| Jun 3, 2026 AForm 4 → | Jun 5, 5:12 pm EDT | RA CAPITAL MANAGEMENT, L.P. +4Director, 10% Owner | 35,500 | — | — | 48,300 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:32 pm EDT | Nathan B FountainDirector | 35,500 | — | — | 54,550 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:31 pm EDT | Kimberlee C DrapkinDirector | 35,500 | — | — | 48,300 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:30 pm EDT | John A Stalfort IIIDirector | 35,500 | — | — | 220,624 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:30 pm EDT | Derrell PorterDirector | 35,500 | — | — | 48,300 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:29 pm EDT | Jeffrey L. IvesDirector | 35,500 | — | — | 48,300 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:28 pm EDT | George GolumbeskiDirector | 35,500 | — | — | 35,500 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:27 pm EDT | Laura StoppelDirector | 35,500 | — | — | 48,300 | — |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jun 15, 2026 MForm 4 → | Jun 17, 5:10 pm EDT | Derrell PorterDirector | 19,500 | — | — | 0 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 5:12 pm EDT | RA CAPITAL MANAGEMENT, L.P. +4Director, 10% Owner | 53,250 | — | — | 53,250 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:32 pm EDT | Nathan B FountainDirector | 53,250 | — | — | 53,250 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:31 pm EDT | Kimberlee C DrapkinDirector | 53,250 | — | — | 53,250 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:30 pm EDT | John A Stalfort IIIDirector | 53,250 | — | — | 53,250 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:30 pm EDT | Derrell PorterDirector | 53,250 | — | — | 53,250 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:29 pm EDT | Jeffrey L. IvesDirector | 53,250 | — | — | 53,250 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:28 pm EDT | George GolumbeskiDirector | 53,250 | — | — | 53,250 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 4:27 pm EDT | Laura StoppelDirector | 53,250 | — | — | 53,250 | — |