Companies / Acumen Pharmaceuticals, Inc. / Activity
Activity — Acumen Pharmaceuticals, Inc.
71 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Jun 3, 2026 | Drapkin Kimberlee C Director | Grant | Common Stock | $0 | +36K +277.34% | 48,300 0.07% of shares | low |
| Jun 3, 2026 | RA Capital Management, L.P. Director | Grant | Common Stock | $0 | +36K +277.34% | 48,300 0.07% of shares | low |
| Jan 16, 2026 | Zuga Matt Executive | Grant | Common Stock | $0 | +99K +47.22% | 309,084 0.43% of shares | low |
| Jan 16, 2026 | Meisner Derek M Executive | Grant | Common Stock | $0 | +99K +118.30% | 182,933 0.25% of shares | low |
| Jan 20, 2026 | OConnell Daniel Joseph CEO | Grant | Common Stock | $0 | +300K +50.51% | 893,310 1.24% of shares | low |
| Jan 16, 2026 | Siemers Eric Executive | Grant | Common Stock | $0 | +99K +62.17% | 258,597 0.36% of shares | low |
| Jan 16, 2026 | Barton Russell Executive | Grant | Common Stock | $0 | +85K +68.63% | 207,869 0.29% of shares | low |
| Jan 16, 2026 | Schacterle Amy Executive | Grant | Common Stock | $0 | +85K +1098.27% | 92,303 0.13% of shares | low |
| Jan 16, 2026 | Doherty James J. Executive | Grant | Common Stock | $0 | +167K +308.82% | 220,900 0.31% of shares | low |
| Jan 22, 2026 | Barton Russell Executive | Sell | Common Stock | $850 | -462 -0.22% | 205,092 0.28% of shares | low |
| Jan 22, 2026 | Siemers Eric Executive | Sell | Common Stock | $1.6K | -895 -0.35% | 255,371 0.35% of shares | low |
| Jan 22, 2026 | Meisner Derek M Executive | Sell | Common Stock | $1.9K | -1K -0.58% | 179,632 0.25% of shares | low |
| Jan 7, 2026 | Schacterle Amy Executive | Sell | Common Stock | $2.2K | -1K -12.47% | 7,703 0.01% of shares | low |
| Jan 22, 2026 | Zuga Matt Executive | Sell | Common Stock | $3.1K | -2K -0.55% | 304,924 0.42% of shares | low |
| Jan 7, 2026 | Zuga Matt Executive | Sell | Common Stock | $3.4K | -2K -0.78% | 216,839 0.30% of shares | low |
| Jan 7, 2026 | Barton Russell Executive | Sell | Common Stock | $3.4K | -2K -1.32% | 126,799 0.18% of shares | low |
| Jan 7, 2026 | Meisner Derek M Executive | Sell | Common Stock | $3.4K | -2K -1.16% | 144,529 0.20% of shares | low |
| Jan 7, 2026 | Doherty James J. Executive | Sell | Common Stock | $3.4K | -2K -2.73% | 60,500 0.08% of shares | low |
| Mar 6, 2026 | Meisner Derek M Executive | Exercise | Common Stock | $3.9K | +2K +1.20% | 176,089 0.24% of shares | low |
| Jan 21, 2026 | Meisner Derek M Executive | Sell | Common Stock | $4.1K | -2K -1.23% | 180,686 0.25% of shares | low |
| Jan 21, 2026 | Barton Russell Executive | Sell | Common Stock | $4.2K | -2K -1.11% | 205,554 0.28% of shares | low |
| Jan 21, 2026 | Siemers Eric Executive | Sell | Common Stock | $4.2K | -2K -0.90% | 256,266 0.35% of shares | low |
| Jan 21, 2026 | Zuga Matt Executive | Sell | Common Stock | $4.5K | -2K -0.80% | 306,611 0.42% of shares | low |
| Jan 28, 2026 | Meisner Derek M Executive | Exercise | Common Stock | $4.9K | +3K +1.54% | 176,670 0.24% of shares | low |
| Jan 22, 2026 | OConnell Daniel Joseph CEO | Sell | Common Stock | $5.1K | -3K -0.30% | 881,275 1.22% of shares | low |
| Jan 8, 2026 | Barton Russell Executive | Sell | Common Stock | $6.6K | -4K -2.78% | 123,269 0.17% of shares | low |
| Mar 6, 2026 | Meisner Derek M Executive | Sell | Common Stock | $6.8K | -2K -1.19% | 173,999 0.24% of shares | low |
| Jan 6, 2026 | Barton Russell Executive | Sell | Common Stock | $7.1K | -4K -2.74% | 128,499 0.18% of shares | low |
| Jan 6, 2026 | Meisner Derek M Executive | Sell | Common Stock | $7.5K | -4K -2.53% | 146,229 0.20% of shares | low |
| Jan 5, 2026 | Barton Russell Executive | Sell | Common Stock | $7.8K | -4K -2.94% | 132,117 0.18% of shares | low |
| Jan 5, 2026 | Siemers Eric Executive | Sell | Common Stock | $7.8K | -4K -2.35% | 166,298 0.23% of shares | low |
| Jan 5, 2026 | Meisner Derek M Executive | Sell | Common Stock | $7.8K | -4K -2.48% | 157,127 0.22% of shares | low |
| Jan 5, 2026 | Zuga Matt Executive | Sell | Common Stock | $7.8K | -4K -1.73% | 227,744 0.31% of shares | low |
| Jan 28, 2026 | Meisner Derek M Executive | Sell | Common Stock | $8.0K | -3K -1.51% | 173,999 0.24% of shares | low |
| Jan 7, 2026 | Zuga Matt Executive | Sell | Common Stock | $8.2K | -4K -1.84% | 218,539 0.30% of shares | low |
| Jan 5, 2026 | OConnell Daniel Joseph CEO | Sell | Common Stock | $9.2K | -5K -0.70% | 662,839 0.92% of shares | low |
| Jan 9, 2026 | Meisner Derek M Executive | Sell | Common Stock | $9.2K | -5K -5.33% | 92,348 0.13% of shares | low |
| Jan 12, 2026 | OConnell Daniel Joseph CEO | Sell | Common Stock | $9.3K | -5K -0.90% | 593,510 0.82% of shares | low |
| Jan 6, 2026 | Zuga Matt Executive | Sell | Common Stock | $10.0K | -5K -2.24% | 222,644 0.31% of shares | low |
| Jan 6, 2026 | OConnell Daniel Joseph CEO | Sell | Common Stock | $10.0K | -5K -0.77% | 657,737 0.91% of shares | low |
| Jan 23, 2026 | Meisner Derek M Executive | Sell | Common Stock | $10.7K | -6K -3.14% | 173,999 0.24% of shares | low |
| Jan 8, 2026 | Doherty James J. Executive | Sell | Common Stock | $11.8K | -6K -10.69% | 54,033 0.07% of shares | low |
| Jan 8, 2026 | Meisner Derek M Executive | Sell | Common Stock | $12.4K | -7K -5.07% | 127,640 0.18% of shares | low |
| Jan 8, 2026 | Zuga Matt Executive | Sell | Common Stock | $12.5K | -7K -3.18% | 209,951 0.29% of shares | low |
| Jan 6, 2026 | Siemers Eric Executive | Sell | Common Stock | $13.4K | -7K -4.11% | 159,464 0.22% of shares | low |
| Jan 6, 2026 | Meisner Derek M Executive | Sell | Common Stock | $14.0K | -7K -4.52% | 150,030 0.21% of shares | low |
| Jan 12, 2026 | Meisner Derek M Executive | Sell | Common Stock | $14.7K | -9K -9.26% | 83,800 0.12% of shares | low |
| Jan 8, 2026 | OConnell Daniel Joseph CEO | Sell | Common Stock | $14.8K | -8K -1.31% | 611,839 0.85% of shares | low |
| Jan 21, 2026 | OConnell Daniel Joseph CEO | Sell | Common Stock | $16.9K | -9K -1.05% | 883,964 1.22% of shares | low |
| Feb 27, 2026 | Meisner Derek M Executive | Exercise | Common Stock | $17.4K | +9K +5.41% | 183,405 0.25% of shares | low |