Acumen Pharmaceuticals, Inc.
ABOSFigures shown here come from public SEC filings. Dates beside each section show the available history.
How Acumen Pharmaceuticals, Inc. Makes Money
No flow chart is shown because the available revenue and expense lines do not reconcile exactly. The reported financial history below remains available.
Financial Summary
Choose a year or quarter, compare it with the same period a year earlier, and open any row for its full filing history.
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SEC filings supply these figures; updates after the dates shown are not included. This page includes 5 annual periods. The latest annual period ends Dec 31, 2025. The latest insider filing shown is dated Jun 17, 2026. The latest institutional report shown is dated Mar 31, 2026; other ownership filings may exist.
Ownership
Who holds the shares, as reported in SEC ownership filings.
Reported 13F positions
Each row shows what a filer reported for one date, not a current position. The link opens that filing.
| Filer | Report date | Shares | Value | Filing |
|---|---|---|---|---|
| BANK OF AMERICA CORP /DE/ | 2026-03-31 | 320,216 | $756K | SEC filing |
| BlackRock, Inc. | 2026-03-31 | 178,326 | $421K | SEC filing |
| Alyeska Investment Group, L.P. | 2026-03-31 | 2,454,754 | $5.78M | SEC filing |
| Intrepid Financial Planning Group LLC | 2026-03-31 | 30,150 | $71.2K | SEC filing |
| CATALYST FINANCIAL PARTNERS LLC | 2026-03-31 | 89,699 | $212K | SEC filing |
| GOLDMAN SACHS GROUP INC | 2026-03-31 | 206,683 | $488K | SEC filing |
| RENAISSANCE TECHNOLOGIES LLC | 2026-03-31 | 473,946 | $1.12M | SEC filing |
| Qube Research & Technologies Ltd | 2026-03-31 | 120,388 | $284K | SEC filing |
| AMERICAN CENTURY COMPANIES INC | 2026-03-31 | 17,929 | $42.3K | SEC filing |
| CAPTRUST FINANCIAL ADVISORS | 2026-03-31 | 15,757 | $37.2K | SEC filing |
| MORGAN STANLEY | 2026-03-31 | 144,584 | $341K | SEC filing |
| MILLENNIUM MANAGEMENT LLC | 2026-03-31 | 659,675 | $1.56M | SEC filing |
| Rockefeller Capital Management L.P. | 2026-03-31 | 3,000 | $7.08K | SEC filing |
| PINNACLE ASSOCIATES LTD | 2026-03-31 | 18,020 | $42.5K | SEC filing |
| FRANKLIN RESOURCES INC | 2026-03-31 | 2,305,096 | $5.44M | SEC filing |
| RA CAPITAL MANAGEMENT, L.P. | 2026-03-31 | 20,992,669 | $49.5M | SEC filing |
| BARCLAYS PLC | 2026-03-31 | 30,679 | $72.4K | SEC filing |
| Prospera Financial Services Inc | 2026-03-31 | 50,000 | $118K | SEC filing |
| Squarepoint Ops LLC | 2026-03-31 | 15,015 | $35.4K | SEC filing |
| JANE STREET GROUP, LLC | 2026-03-31 | 89,661 | $212K | SEC filing |
Filer report history
Two reports per filer, as filed. No change is calculated, because the data on file cannot confirm that both reports describe the same security.
- Factor Wealth Management LTD: 16,500 shares reported 2025-12-31; 16,500 shares reported 2026-03-31.
- SG Americas Securities, LLC: 401,047 shares reported 2025-12-31; 719,257 shares reported 2026-03-31.
- UBS Group AG: 21,562 shares reported 2025-12-31; 37,146 shares reported 2026-03-31.
- Clearstead Advisors, LLC: 60 shares reported 2025-12-31; 60 shares reported 2026-03-31.
- EverSource Wealth Advisors, LLC: 407 shares reported 2025-12-31; 407 shares reported 2026-03-31.
- Pinnacle Wealth Management Advisory Group, LLC: 18,020 shares reported 2025-12-31; 18,020 shares reported 2026-03-31.
- NBT BANK N A /NY: 2 shares reported 2025-12-31; 200 shares reported 2026-03-31.
- NISA INVESTMENT ADVISORS, LLC: 1,229 shares reported 2025-12-31; 1,229 shares reported 2026-03-31.
- Optiver Holding B.V.: 5 shares reported 2025-12-31; 5 shares reported 2026-03-31.
- Laurion Capital Management LP: 867,046 shares reported 2025-12-31; 525,444 shares reported 2026-03-31.
- Ikarian Capital, LLC: 254,312 shares reported 2025-12-31; 1,053,797 shares reported 2026-03-31.
- Larson Financial Group LLC: 4,348 shares reported 2025-12-31; 20 shares reported 2026-03-31.
Showing the 12 most recent filer reports.
52 filers have only one report here.
Unusually large insider trades
Each trade is compared with the other insider trades of the same kind in the same security among Acumen Pharmaceuticals, Inc.'s recent filings on file. Size alone is context, not a prediction or evidence of improper trading.
- 2026-01-26 · Meisner Derek M: Larger than 59 of the 65 other insider sales of Common Stock on file. SEC filing
- 2026-01-08 · Meisner Derek M: Larger than 62 of the 65 other insider sales of Common Stock on file. SEC filing
- 2026-01-07 · OConnell Daniel Joseph: Larger than 63 of the 65 other insider sales of Common Stock on file. SEC filing
- 2025-01-23 · Zuga Matt: Larger than 61 of the 65 other insider sales of Common Stock on file. SEC filing
- 2025-01-03 · OConnell Daniel Joseph: Larger than all 65 other insider sales of Common Stock on file. SEC filing
- 2024-01-19 · OConnell Daniel Joseph: Larger than 60 of the 65 other insider sales of Common Stock on file. SEC filing
- 2023-08-17 · Ives Jeffrey L.: Larger than 64 of the 65 other insider sales of Common Stock on file. SEC filing
- 2023-07-21 · RA Capital Healthcare Fund LP: Larger than all 8 other insider purchases of Common Stock on file. SEC filing
Independent insiders buying near the same time
- 2021-07-06–2021-07-06: 8 event(s) across 6 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing , filing , filing , filing , filing , filing )
Purchases & sales (open market or private)
| Security | Code | Price | Filing | |||
|---|---|---|---|---|---|---|
| 2026-06-17 | Porter Derrell · Director | Common Stock | S — Open market or private sale | −13,040 | 2.33 | SEC filing |
| 2026-06-16 | Porter Derrell · Director | Common Stock | S — Open market or private sale | −12,800 | 2.33 | SEC filing |
| 2026-06-15 | Porter Derrell · Director | Common Stock | S — Open market or private sale | −6,460 | 2.35 | SEC filing |
| 2026-06-09 | Fountain Nathan B · Director | Common Stock | S — Open market or private sale | −6,400 | 2.23 | SEC filing |
| 2026-03-06 | Meisner Derek M · Chief Legal Officer & Corp Sec | Common Stock | S — Open market or private sale | −2,090 | 3.26 | SEC filing |
| 2026-02-27 | Meisner Derek M · Chief Legal Officer & Corp Sec | Common Stock | S — Open market or private sale | −9,406 | 3.01 | SEC filing |
| 2026-01-28 | Meisner Derek M · Chief Legal Officer & Corp Sec | Common Stock | S — Open market or private sale | −2,671 | 3.00 | SEC filing |
| 2026-01-26 | Meisner Derek M · Chief Legal Officer & Corp Sec | Common Stock | S — Open market or private sale | −15,085 | 3.00 | SEC filing |
Showing 8 of 19 rows
Grants, exercises, tax & gifts
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2026-06-17 | Porter Derrell · Director | Common Stock | M — Exercise or conversion of derivative security | +13,040 | SEC filing |
| 2026-06-17 | Porter Derrell · Director | Stock Option (right to buy) | M — Exercise or conversion of derivative security | −13,040 | SEC filing |
| 2026-06-15 | Porter Derrell · Director | Common Stock | M — Exercise or conversion of derivative security | +6,460 | SEC filing |
| 2026-06-15 | Porter Derrell · Director | Stock Option (right to buy) | M — Exercise or conversion of derivative security | −6,460 | SEC filing |
| 2026-06-03 | Stoppel Laura · Director | Stock Option (right to buy) | A — Grant, award, or other acquisition | +53,250 | SEC filing |
| 2026-06-03 | Stalfort John A III · Director | Stock Option (right to buy) | A — Grant, award, or other acquisition | +53,250 | SEC filing |
| 2026-06-03 | Drapkin Kimberlee C · Director | Common Stock | A — Grant, award, or other acquisition | +35,500 | SEC filing |
| 2026-06-03 | Fountain Nathan B · Director | Stock Option (right to buy) | A — Grant, award, or other acquisition | +53,250 | SEC filing |
Showing 8 of 21 rows
These tables describe filed transactions, not current holdings. Prices are shown as filed; a currency is added only when the filing's data names one. Amended and possible duplicate rows are left out of size comparisons and transaction groups.