ABOS · Acumen Pharmaceuticals Inc. Common Stock
View on chartInsiders & Stakes
| Daniel Joseph OConnell President and CEO | ▼ Sell | Open Market | 881,275 Shares held | 1/22/2026 | View profile |
| Matt Zuga CFO and Chief Business Officer | ▼ Sell | Open Market | 304,924 Shares held | 1/22/2026 | View profile |
| Eric Siemers Chief Medical Officer | ▼ Sell | Open Market | 255,371 Shares held | 1/22/2026 | View profile |
| James J. Doherty President and CDO | ▲ Buy | Grant | 220,900 Shares held | 1/16/2026 | View profile |
| John A. Stalfort III Director | ▲ Buy | Grant | 220,624 Shares held | 6/3/2026 | View profile |
| Russell Barton Chief Operating Officer | ▼ Sell | Open Market | 205,092 Shares held | 1/22/2026 | View profile |
| Derek M. Meisner Chief Legal Officer | ▼ Sell | Open Market | 173,999 Shares held | 3/6/2026 | View profile |
| Amy Schacterle Chief Regulatory Officer | ▲ Buy | Grant | 92,303 Shares held | 1/16/2026 | View profile |
| RA CAPITAL MANAGEMENT, L.P. Director | ▲ Buy | Grant | 48,300 Shares held | 6/3/2026 | View profile |
| Kimberlee C. Drapkin Director | ▲ Buy | Grant | 48,300 Shares held | 6/3/2026 | View profile |
| Jeffrey L. Ives Director | ▲ Buy | Grant | 48,300 Shares held | 6/3/2026 | View profile |
| Laura Stoppel Director | ▲ Buy | Grant | 48,300 Shares held | 6/3/2026 | View profile |
| Nathan B. Fountain Director | ▼ Sell | Open Market | 48,150 Shares held | 6/9/2026 | View profile |
| Derrell Porter Director | ▼ Sell | Open Market | 35,500 Shares held | 6/17/2026 | View profile |
| George Golumbeski Director | ▲ Buy | Grant | 35,500 Shares held | 6/3/2026 | View profile |
Transaction History
| Derrell Porter | ▲ Buy | Option Exercise | 13,040 | $14K | 6/17/2026 |
| Derrell Porter | ▼ Sell | Open Market | 13,040 | $30K | 6/17/2026 |
| Derrell Porter | ▼ Sell | Open Market | 12,800 | $30K | 6/16/2026 |
| Derrell Porter | ▲ Buy | Option Exercise | 6,460 | $7K | 6/15/2026 |
| Derrell Porter | ▼ Sell | Open Market | 6,460 | $15K | 6/15/2026 |
| Nathan B. Fountain | ▼ Sell | Open Market | 6,400 | $14K | 6/9/2026 |
| Nathan B. Fountain | ▲ Buy | Grant | 35,500 | $0 | 6/3/2026 |
| Kimberlee C. Drapkin | ▲ Buy | Grant | 35,500 | $0 | 6/3/2026 |
| John A. Stalfort III | ▲ Buy | Grant | 35,500 | $0 | 6/3/2026 |
| Derrell Porter | ▲ Buy | Grant | 35,500 | $0 | 6/3/2026 |
| Jeffrey L. Ives | ▲ Buy | Grant | 35,500 | $0 | 6/3/2026 |
| George Golumbeski | ▲ Buy | Grant | 35,500 | $0 | 6/3/2026 |
| Laura Stoppel | ▲ Buy | Grant | 35,500 | $0 | 6/3/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▲ Buy | Grant | 35,500 | $0 | 6/3/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▲ Buy | Grant | 6,060,606 | $20.0M | 3/16/2026 |
| Derek M. Meisner | ▲ Buy | Option Exercise | 2,090 | $4K | 3/6/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 2,090 | $7K | 3/6/2026 |
| Derek M. Meisner | ▲ Buy | Option Exercise | 9,406 | $17K | 2/27/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 9,406 | $28K | 2/27/2026 |
| Derek M. Meisner | ▲ Buy | Option Exercise | 2,671 | $5K | 1/28/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 2,671 | $8K | 1/28/2026 |
| Derek M. Meisner | ▲ Buy | Option Exercise | 15,085 | $28K | 1/26/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 15,085 | $45K | 1/26/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 5,633 | $11K | 1/23/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 1,054 | $2K | 1/22/2026 |
| Eric Siemers | ▼ Sell | Open Market | 895 | $2K | 1/22/2026 |
| Matt Zuga | ▼ Sell | Open Market | 1,687 | $3K | 1/22/2026 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 2,689 | $5K | 1/22/2026 |
| Russell Barton | ▼ Sell | Open Market | 462 | $850 | 1/22/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 2,247 | $4K | 1/21/2026 |
| Eric Siemers | ▼ Sell | Open Market | 2,331 | $4K | 1/21/2026 |
| Matt Zuga | ▼ Sell | Open Market | 2,473 | $4K | 1/21/2026 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 9,346 | $17K | 1/21/2026 |
| Russell Barton | ▼ Sell | Open Market | 2,315 | $4K | 1/21/2026 |
| Daniel Joseph OConnell | ▲ Buy | Grant | 299,800 | $0 | 1/20/2026 |
| Matt Zuga | ▲ Buy | Grant | 99,133 | $0 | 1/16/2026 |
| Derek M. Meisner | ▲ Buy | Grant | 99,133 | $0 | 1/16/2026 |
| Eric Siemers | ▲ Buy | Grant | 99,133 | $0 | 1/16/2026 |
| Russell Barton | ▲ Buy | Grant | 84,600 | $0 | 1/16/2026 |
| Amy Schacterle | ▲ Buy | Grant | 84,600 | $0 | 1/16/2026 |
| James J. Doherty | ▲ Buy | Grant | 166,867 | $0 | 1/16/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 8,548 | $15K | 1/12/2026 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 5,388 | $9K | 1/12/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 5,200 | $9K | 1/9/2026 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 12,941 | $23K | 1/9/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 30,092 | $55K | 1/8/2026 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 8,143 | $15K | 1/8/2026 |
| James J. Doherty | ▼ Sell | Open Market | 6,467 | $12K | 1/8/2026 |
| Matt Zuga | ▼ Sell | Open Market | 6,888 | $13K | 1/8/2026 |
| Russell Barton | ▼ Sell | Open Market | 3,530 | $7K | 1/8/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 6,819 | $12K | 1/8/2026 |
| James J. Doherty | ▼ Sell | Open Market | 1,700 | $3K | 1/7/2026 |
| Amy Schacterle | ▼ Sell | Open Market | 1,097 | $2K | 1/7/2026 |
| Matt Zuga | ▼ Sell | Open Market | 4,105 | $8K | 1/7/2026 |
| Matt Zuga | ▼ Sell | Open Market | 1,700 | $3K | 1/7/2026 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 37,755 | $75K | 1/7/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 1,700 | $3K | 1/7/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 10,070 | $20K | 1/7/2026 |
| Russell Barton | ▼ Sell | Open Market | 1,700 | $3K | 1/7/2026 |
| Matt Zuga | ▼ Sell | Open Market | 5,100 | $10K | 1/6/2026 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 5,102 | $10K | 1/6/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 7,097 | $14K | 1/6/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 3,801 | $7K | 1/6/2026 |
| Russell Barton | ▼ Sell | Open Market | 3,618 | $7K | 1/6/2026 |
| Eric Siemers | ▼ Sell | Open Market | 6,834 | $13K | 1/6/2026 |
| Matt Zuga | ▼ Sell | Open Market | 4,000 | $8K | 1/5/2026 |
| Eric Siemers | ▼ Sell | Open Market | 4,000 | $8K | 1/5/2026 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 4,649 | $9K | 1/5/2026 |
| Derek M. Meisner | ▼ Sell | Open Market | 4,000 | $8K | 1/5/2026 |
| Russell Barton | ▼ Sell | Open Market | 4,000 | $8K | 1/5/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▲ Buy | Grant | 12,800 | $0 | 6/4/2025 |
| Laura Stoppel | ▲ Buy | Grant | 12,800 | $0 | 6/4/2025 |
| John A. Stalfort III | ▲ Buy | Grant | 12,800 | $0 | 6/4/2025 |
| Kimberlee C. Drapkin | ▲ Buy | Grant | 12,800 | $0 | 6/4/2025 |
| Jeffrey L. Ives | ▲ Buy | Grant | 12,800 | $0 | 6/4/2025 |
| Derrell Porter | ▲ Buy | Grant | 12,800 | $0 | 6/4/2025 |
| Nathan B. Fountain | ▲ Buy | Grant | 12,800 | $0 | 6/4/2025 |
| Matt Zuga | ▼ Sell | Open Market | 28,902 | $50K | 1/23/2025 |
| Eric Siemers | ▼ Sell | Open Market | 3,219 | $5K | 1/21/2025 |
| Matt Zuga | ▼ Sell | Open Market | 4,364 | $7K | 1/21/2025 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 12,619 | $20K | 1/21/2025 |
| Derek M. Meisner | ▼ Sell | Open Market | 3,418 | $5K | 1/21/2025 |
| Russell Barton | ▼ Sell | Open Market | 2,914 | $5K | 1/21/2025 |
| Daniel Joseph OConnell | ▲ Buy | Grant | 225,400 | $0 | 1/7/2025 |
| Russell Barton | ▲ Buy | Grant | 49,800 | $0 | 1/6/2025 |
| Matt Zuga | ▲ Buy | Grant | 66,800 | $0 | 1/6/2025 |
| Amy Schacterle | ▲ Buy | Grant | 8,800 | $0 | 1/6/2025 |
| James J. Doherty | ▲ Buy | Grant | 62,600 | $0 | 1/6/2025 |
| Derek M. Meisner | ▲ Buy | Grant | 66,800 | $0 | 1/6/2025 |
| Eric Siemers | ▲ Buy | Grant | 66,800 | $0 | 1/6/2025 |
| Russell Barton | ▼ Sell | Open Market | 7,636 | $14K | 1/3/2025 |
| Matt Zuga | ▼ Sell | Open Market | 13,235 | $24K | 1/3/2025 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 47,778 | $88K | 1/3/2025 |
| Derek M. Meisner | ▼ Sell | Open Market | 11,122 | $21K | 1/3/2025 |
| Eric Siemers | ▼ Sell | Open Market | 10,859 | $20K | 1/3/2025 |
| Daniel Joseph OConnell | ▼ Sell | Open Market | 15,200 | $53K | 1/19/2024 |
| Derek M. Meisner | ▼ Sell | Open Market | 8,933 | $31K | 1/19/2024 |
| Eric Siemers | ▼ Sell | Open Market | 3,124 | $12K | 1/18/2024 |
| Russell Barton | ▼ Sell | Open Market | 2,833 | $11K | 1/18/2024 |
| Matt Zuga | ▼ Sell | Open Market | 4,242 | $16K | 1/18/2024 |
| Daniel Joseph OConnell | ▲ Buy | Grant | 401,000 | $0 | 1/2/2024 |
| Derek M. Meisner | ▲ Buy | Grant | 91,000 | $0 | 1/2/2024 |
| Matt Zuga | ▲ Buy | Grant | 106,000 | $0 | 1/2/2024 |
| Russell Barton | ▲ Buy | Grant | 73,000 | $0 | 1/2/2024 |
| Eric Siemers | ▲ Buy | Grant | 94,000 | $0 | 1/2/2024 |
| Jeffrey L. Ives | ▲ Buy | Option Exercise | 39,149 | $28K | 8/17/2023 |
| Jeffrey L. Ives | ▼ Sell | Open Market | 39,149 | $254K | 8/17/2023 |
| Jeffrey L. Ives | ▲ Buy | Option Exercise | 2,800 | $3K | 8/17/2023 |
| Jeffrey L. Ives | ▼ Sell | Open Market | 2,800 | $19K | 8/17/2023 |
| RA CAPITAL MANAGEMENT, L.P. | ▲ Buy | Open Market | 5,161,290 | $40.0M | 7/21/2023 |
| Matt Zuga | ▲ Buy | Grant | 33,500 | $0 | 1/17/2023 |
| Eric Siemers | ▲ Buy | Grant | 26,700 | $0 | 1/17/2023 |
| Daniel Joseph OConnell | ▲ Buy | Grant | 114,000 | $0 | 1/17/2023 |
| Russell Barton | ▲ Buy | Grant | 26,700 | $0 | 1/17/2023 |
| Derek M. Meisner | ▲ Buy | Grant | 26,800 | $0 | 1/17/2023 |
| Matt Zuga | ▲ Buy | Option Exercise | 50,000 | $60K | 12/29/2022 |
| Daniel Joseph OConnell | ▲ Buy | Option Exercise | 1,118 | $5K | 11/30/2021 |
AI Market Commentary
AI-generatedAll commentary →Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 27, 2026
Acumen Pharmaceuticals Featured in Alzheimer's Day Stock List
Acumen Pharmaceuticals was included in a Yahoo Finance article highlighting four Alzheimer's drug stocks to watch on World Alzheimer's Day. The mention serves as a reminder of the company's focus on neurodegenerative diseases, though the article does not report any new clinical data or corporate announcements. The stock is currently trading near its 52-week low, with an average analyst target of $7.60.
Acumen Pharmaceuticals Featured in Alzheimer's Day Stock List. Acumen Pharmaceuticals was included in a Yahoo Finance article highlighting four Alzheimer's drug stocks to watch on World Alzheimer's Day. The mention serves as a reminder of the company's focus on neurodegenerative diseases, though the article does not report any new clinical data or corporate announcements. The stock is currently trading near its 52-week low, with an average analyst target of $7.60.