RA Capital Management, L.P. 13D and 13G filings for Acumen Pharmaceuticals, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-03-17 4:33 pm Purchase | 2026-03-13 | 13D | ACUMEN PHARMACEUTICALS INC ABOS | RA Capital Management, L.P. | 21,101,669 29.500% | 6,085,606 (+40.53%) | Filing |
| 2025-03-31 4:57 pm Purchase | 2025-03-27 | 13D | ACUMEN PHARMACEUTICALS INC ABOS | RA Capital Management, L.P. | 15,016,063 24.800% | 34,445 (+0.23%) | Filing |
| 2023-07-25 4:31 pm Purchase | 2023-07-21 | 13D | ACUMEN PHARMACEUTICALS INC ABOS | RA Capital Management, L.P. | 14,981,618 25.900% | 5,207,067 (+53.27%) | Filing |
| 2021-09-13 4:30 pm Purchase | 2021-09-10 | 13D | ACUMEN PHARMACEUTICALS INC ABOS | RA Capital Management, L.P. | 9,774,551 24.200% | 3,778 (+0.04%) | Filing |