ACUMEN PHARMACEUTICALS INC (ABOS) Stock Ownership
NASDAQ:ABOS • US00509G2093
Current stock price
2.36 USD
+0.17 (+7.76%)
At close:
2.36 USD
0 (0%)
After Hours:
ABOS Ownership information
| Shares Outstanding | 60.57M |
| Float | 55.45M |
| Float Short Interest Percentage | 1.86% |
| Owners (insider) | 2.76% |
| Owners (institutional) | 63.24% |
| Owners (insider) change | 11.99% |
| Owners (institutional) change | -0.39% |
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Mar 16, 2026 | RA CAPITAL MANAGEMENT, LLC | Grant | 6060606 | 3.30 | $ 19,999,999.80 |
| Mar 16, 2026 | RA Capital Healthcare Fund LP | Grant | 6060606 | 3.30 | $ 19,999,999.80 |
| Mar 16, 2026 | RA Capital Nexus Fund II, L.P. | Grant | 6060606 | 3.30 | $ 19,999,999.80 |
| Mar 16, 2026 | Kolchinsky Peter | Grant | 6060606 | 3.30 | $ 19,999,999.80 |
| Mar 16, 2026 | Shah Rajeev M. | Grant | 6060606 | 3.30 | $ 19,999,999.80 |
| Mar 6, 2026 | Meisner Derek M | Option Excercise | 2090 | 1.85 | $ 3,866.50 |
| Mar 6, 2026 | Meisner Derek M | Open Market Sale | 2090 | 3.26 | $ 6,813.40 |
| Feb 27, 2026 | Meisner Derek M | Open Market Sale | 9406 | 3.01 | $ 28,311.12 |
| Feb 27, 2026 | Meisner Derek M | Option Excercise | 9406 | 1.85 | $ 17,401.10 |
| Jan 26, 2026 | Meisner Derek M | Option Excercise | 17756 | 1.85 | $ 32,848.60 |
| Jan 26, 2026 | Meisner Derek M | Open Market Sale | 17756 | 3.00 | $ 53,279.82 |
| Jan 21, 2026 | Meisner Derek M | Open Market Sale | 8934 | 1.87 | $ 16,720.52 |
| Jan 21, 2026 | Siemers Eric | Open Market Sale | 3226 | 1.81 | $ 5,832.86 |
| Jan 21, 2026 | Zuga Matt | Open Market Sale | 4160 | 1.83 | $ 7,607.03 |
| Jan 21, 2026 | OConnell Daniel Joseph | Open Market Sale | 12035 | 1.83 | $ 21,993.01 |
| Jan 21, 2026 | Barton Russell | Open Market Sale | 2777 | 1.81 | $ 5,030.97 |
| Jan 20, 2026 | OConnell Daniel Joseph | Grant | 299800 | 0.00 | $ 0.00 |
| Jan 16, 2026 | Zuga Matt | Grant | 99133 | 0.00 | $ 0.00 |
| Jan 16, 2026 | Meisner Derek M | Grant | 99133 | 0.00 | $ 0.00 |
| Jan 16, 2026 | Siemers Eric | Grant | 99133 | 0.00 | $ 0.00 |
| Jan 16, 2026 | Barton Russell | Grant | 84600 | 0.00 | $ 0.00 |
| Jan 16, 2026 | Schacterle Amy | Grant | 84600 | 0.00 | $ 0.00 |
| Jan 16, 2026 | Doherty James J. | Grant | 166867 | 0.00 | $ 0.00 |
| Jan 8, 2026 | Zuga Matt | Open Market Sale | 6888 | 1.82 | $ 12,512.74 |
| Jan 8, 2026 | Barton Russell | Open Market Sale | 3530 | 1.86 | $ 6,561.56 |
| Jan 8, 2026 | Meisner Derek M | Open Market Sale | 50659 | 1.80 | $ 91,073.23 |
| Jan 8, 2026 | OConnell Daniel Joseph | Open Market Sale | 26472 | 1.77 | $ 46,953.87 |
| Jan 7, 2026 | Doherty James J. | Open Market Sale | 8167 | 1.85 | $ 15,148.08 |
| Jan 7, 2026 | Schacterle Amy | Open Market Sale | 1097 | 1.98 | $ 2,176.23 |
| Jan 5, 2026 | Meisner Derek M | Open Market Sale | 26668 | 1.98 | $ 52,689.98 |
| Jan 5, 2026 | Barton Russell | Open Market Sale | 9318 | 1.97 | $ 18,324.91 |
| Jan 5, 2026 | Zuga Matt | Open Market Sale | 14905 | 1.97 | $ 29,436.03 |
| Jan 5, 2026 | Siemers Eric | Open Market Sale | 10834 | 1.96 | $ 21,277.28 |
| Jan 5, 2026 | OConnell Daniel Joseph | Open Market Sale | 47506 | 1.98 | $ 94,176.16 |
| Jun 4, 2025 | RA CAPITAL MANAGEMENT, LLC | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | RA Capital Healthcare Fund LP | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | RA Capital Nexus Fund II, L.P. | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | Kolchinsky Peter | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | Shah Rajeev M. | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | Stoppel Laura | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | Drapkin Kimberlee C | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | Fountain Nathan B | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | Ives Jeffrey L. | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | Porter Derrell | Grant | 12800 | 0.00 | $ 0.00 |
| Jun 4, 2025 | Stalfort Sean | Grant | 12800 | 0.00 | $ 0.00 |