| $385M | ||
| $350M | ||
| $215M | ||
| $88M | ||
| $82M | ||
| $62M |
Buys | $0 | 0 | 0 |
Sells | $500,794 | 38 | 100 |
| Schacterle Amy | Chief Regulatory Officer | 0 | $0 | 1 | $2,176 | $-2,176 |
| Doherty James J. | President and CDO | 0 | $0 | 2 | $15,148 | $-15,148 |
| Siemers Eric | Chief Medical Officer | 0 | $0 | 4 | $27,110 | $-27,110 |
| Barton Russell | Chief Operating Officer | 0 | $0 | 6 | $29,917 | $-29,917 |
| Zuga Matt | CFO & Chief Business Officer | 0 | $0 | 6 | $49,556 | $-49,556 |
| OConnell Daniel Joseph | Chief Executive Officer | 0 | $0 | 8 | $163,123 | $-163,123 |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 0 | $0 | 11 | $213,764 | $-213,764 |
Acumen Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company, discovers and develops therapies for the treatment of Alzheimer's disease. The company focuses on advancing a targeted immunotherapy drug candidate ACU193, a humanized monoclonal antibody that is in Phase I clinical-stage to target soluble amyloid-beta oligomers. Acumen Pharmaceuticals, Inc. was incorporated in 1996 and is headquartered in Charlottesville, Virginia.
Over the last 12 months, insiders at Acumen Pharmaceuticals, Inc. have bought $0 and sold $500,794 worth of Acumen Pharmaceuticals, Inc. stock.
On average, over the past 5 years, insiders at Acumen Pharmaceuticals, Inc. have bought $49.68M and sold $384,597 worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 5,161,290 shares for transaction amount of $40M was made by RA CAPITAL MANAGEMENT, L.P. () on 2023‑07‑21.
| 2026-01-28 | Sale | Meisner Derek M | Chief Legal Officer & Corp Sec | 2,671 0.0049% | $3.00 | $8,017 | -11.74% | |
| 2026-01-26 | Sale | Meisner Derek M | Chief Legal Officer & Corp Sec | 15,085 0.0359% | $3.00 | $45,263 | +10.22% | |
| 2026-01-23 | Sale | Meisner Derek M | Chief Legal Officer & Corp Sec | 5,633 0.0089% | $1.90 | $10,718 | +29.45% | |
| 2026-01-22 | Sale | OConnell Daniel Joseph | Chief Executive Officer | 2,689 0.0042% | $1.88 | $5,066 | +29.74% | |
| 2026-01-22 | Sale | Zuga Matt | CFO & Chief Business Officer | 1,687 0.0026% | $1.86 | $3,138 | +29.74% | |
| 2026-01-22 | Sale | Siemers Eric | Chief Medical Officer | 895 0.0014% | $1.82 | $1,629 | +29.74% | |
| 2026-01-22 | Sale | Barton Russell | Chief Operating Officer | 462 0.0007% | $1.84 | $850 | +29.74% | |
| 2026-01-22 | Sale | Meisner Derek M | Chief Legal Officer & Corp Sec | 1,054 0.0016% | $1.84 | $1,939 | +29.74% | |
| 2026-01-21 | Sale | OConnell Daniel Joseph | Chief Executive Officer | 9,346 0.0154% | $1.81 | $16,927 | +29.52% | |
| 2026-01-21 | Sale | Zuga Matt | CFO & Chief Business Officer | 2,473 0.0041% | $1.81 | $4,469 | +29.52% | |
| 2026-01-21 | Sale | Siemers Eric | Chief Medical Officer | 2,331 0.0038% | $1.80 | $4,204 | +29.52% | |
| 2026-01-21 | Sale | Barton Russell | Chief Operating Officer | 2,315 0.0038% | $1.81 | $4,181 | +29.52% | |
| 2026-01-21 | Sale | Meisner Derek M | Chief Legal Officer & Corp Sec | 2,247 0.0037% | $1.81 | $4,063 | +29.52% | |
| 2026-01-12 | Sale | OConnell Daniel Joseph | Chief Executive Officer | 5,388 0.0089% | $1.73 | $9,307 | +39.07% | |
| 2026-01-12 | Sale | Meisner Derek M | Chief Legal Officer & Corp Sec | 8,548 0.0141% | $1.71 | $14,658 | +39.07% | |
| 2026-01-09 | Sale | OConnell Daniel Joseph | Chief Executive Officer | 12,941 0.0208% | $1.76 | $22,832 | +36.51% | |
| 2026-01-09 | Sale | Meisner Derek M | Chief Legal Officer & Corp Sec | 5,200 0.0084% | $1.76 | $9,169 | +36.51% | |
| 2026-01-08 | Sale | OConnell Daniel Joseph | Chief Executive Officer | 8,143 0.0131% | $1.82 | $14,815 | +30.47% | |
| 2026-01-08 | Sale | Zuga Matt | CFO & Chief Business Officer | 6,888 0.0111% | $1.82 | $12,513 | +30.47% | |
| 2026-01-08 | Sale | Barton Russell | Chief Operating Officer | 3,530 0.0058% | $1.86 | $6,562 | +30.47% |
| OConnell Daniel Joseph | Chief Executive Officer | 881275 1.4549% | $2.16M | 0 | 11 | |
| Zuga Matt | CFO & Chief Business Officer | 304924 0.5034% | $747,063.80 | 0 | 10 | |
| Siemers Eric | Chief Medical Officer | 255371 0.4216% | $625,658.95 | 0 | 7 | |
| Barton Russell | Chief Operating Officer | 205092 0.3386% | $502,475.40 | 0 | 9 | |
| Meisner Derek M | Chief Legal Officer & Corp Sec | 173999 0.2873% | $426,297.55 | 0 | 14 | |
| Doherty James J. | President and CDO | 54033 0.0892% | $132,380.85 | 0 | 2 | |
| Schacterle Amy | Chief Regulatory Officer | 7703 0.0127% | $18,872.35 | 0 | 1 | |
| RA CAPITAL MANAGEMENT, L.P. | 13043179 21.5328% | $31.96M | 2 | 0 | <0.0001% | |
| Hardie Robert D. | 10 percent owner | 3951156 6.5229% | $9.68M | 1 | 0 | <0.0001% |
| Sands Capital Ventures Discovery Fund III, L.P. | 10 percent owner | 3417075 5.6412% | $8.37M | 1 | 0 | <0.0001% |
| Manning Paul B | 10 percent owner | 3352693 5.5349% | $8.21M | 1 | 0 | <0.0001% |
| Stalfort John A III | director | 172324 0.2845% | $422,193.80 | 1 | 0 | <0.0001% |
| Fountain Nathan B | director | 6250 0.0103% | $15,312.50 | 1 | 0 | <0.0001% |
| Ives Jeffrey L. | director | 0 0% | $0 | 0 | 1 |
$16,259,194 | 41 | 120.51% | $130.59M | |
$7,147,964 | 34 | 24.77% | $127.51M | |
$47,292,212 | 27 | -28.21% | $162.81M | |
$295,092,700 | 21 | -0.27% | $154.57M | |
$448,999,793 | 15 | -19.99% | $146.32M | |
$178,593,887 | 15 | -14.86% | $127.05M | |
$135,812,721 | 14 | 17.52% | $170.51M | |
$13,259,565 | 14 | -30.38% | $175.52M | |
$6,847,110 | 9 | 5.96% | $169.86M | |
$13,919,584 | 9 | -30.43% | $144.79M | |
Acumen Pharmaceuticals, Inc. (ABOS) | $99,355,998 | 7 | -65.74% | $148.4M |
$22,090,972 | 7 | -3.49% | $132.4M | |
$299,343 | 6 | -44.75% | $144.88M | |
$556,839 | 5 | 13.42% | $130.25M | |
$20,729,984 | 5 | 51.71% | $141.72M | |
$13,001,183 | 5 | 58.75% | $154.5M | |
$32,007,657 | 4 | -45.65% | $168.69M | |
$12,750 | 2 | -39.73% | $170.2M | |
$63,731 | 1 | -19.50% | $159.5M |
| Increased Positions | 25 | +28.09% | 969,950 | +2.65% |
| Decreased Positions | 32 | -35.96% | 2M | -5.2% |
| New Positions | 13 | New | 645,899 | New |
| Sold Out Positions | 12 | Sold Out | 209,896 | Sold Out |
| Total Postitions | 82 | -7.87% | 36M | -2.55% |
| Ra Capital Management, L.P. | $30,163.00 | 24.48% | 14.93M | 0 | 0% | 2025-09-30 |
| Sands Capital Alternatives, Llc | $6,902.00 | 5.6% | 3.42M | 0 | 0% | 2025-09-30 |
| Franklin Resources Inc | $4,656.00 | 3.78% | 2.31M | -771,943 | -25.09% | 2025-09-30 |
| Fmr Llc | $4,099.00 | 3.33% | 2.03M | -411 | -0.02% | 2025-09-30 |
| Vanguard Group Inc | $3,336.00 | 2.71% | 1.65M | -37,879 | -2.24% | 2025-09-30 |
| Knollwood Investment Advisory, Llc | $3,290.00 | 2.67% | 1.63M | 0 | 0% | 2025-09-30 |
| Alyeska Investment Group, L.P. | $1,898.00 | 1.54% | 939,603 | 0 | 0% | 2025-09-30 |
| Adar1 Capital Management, Llc | $1,800.00 | 1.46% | 891,183 | -25,000 | -2.73% | 2025-09-30 |
| Laurion Capital Management Lp | $1,751.00 | 1.42% | 867,046 | 0 | 0% | 2025-09-30 |
| Pathstone Holdings, Llc | $1,735.00 | 1.41% | 859,110 | -199,421 | -18.84% | 2025-09-30 |