Derek M Meisner insider trades: Acumen Pharmaceuticals (ABOS) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Derek reports to the SEC
Open-market buys and sales
13 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 6, 2026 | ABOS | ↓ Sell | 2,090 | $3.26 | $7K | Direct | Mar 10, 2026 (4d) |
| Feb 27, 2026 | ABOS | ↓ Sell | 9,406 | $3.01 | $28K | Direct | Mar 3, 2026 (4d) |
| Jan 28, 2026 | ABOS | ↓ Sell | 17,756 | $3.00 | $53K | Direct | Jan 28, 2026 (0d) |
| Jan 23, 2026 | ABOS | ↓ Sell10b5-1 | 8,934 | $1.87 | $17K | Direct | Jan 23, 2026 (0d) |
| Jan 12, 2026 | ABOS | ↓ Sell10b5-1 | 50,659 | $1.80 | $91K | Direct | Jan 12, 2026 (0d) |
| Jan 7, 2026 | ABOS | ↓ Sell10b5-1 | 26,668 | $1.98 | $53K | Direct | Jan 7, 2026 (0d) |
| Jan 21, 2025 | ABOS | ↓ Sell10b5-1 | 3,418 | $1.59 | $5K | Direct | Jan 23, 2025 (2d) |
| Jan 3, 2025 | ABOS | ↓ Sell10b5-1 | 11,122 | $1.84 | $21K | Direct | Jan 7, 2025 (4d) |
| Jan 19, 2024 | ABOS | ↓ Sell10b5-1 | 8,933 | $3.48 | $31K | Direct | Jan 19, 2024 (0d) |
| Aug 17, 2021 | XFOR | ↓ Sell | 8,332 | $5.10 | $42K | Direct | Aug 19, 2021 (2d) |
| Jun 24, 2021 | XFOR | ↓ Sell | 4,166 | $7.00 | $29K | Direct | Jun 25, 2021 (1d) |
| Jun 15, 2021 | XFOR | ↓ Sell | 4,166 | $7.84 | $33K | Direct | Jun 17, 2021 (2d) |
| Sep 9, 2020 | XFOR | ↓ Sell | 8,334 | $8.05 | $67K | Direct | Sep 10, 2020 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ABOS insiders
Open-market trades in the last 12 months
About Derek M Meisner's insider trades
Derek M Meisner is Chief Legal Officer & Corp Sec at Acumen Pharmaceuticals (ABOS). Since Sep 9, 2020, Derek has reported no open-market purchases and 13 sales worth $477K on SEC Form 4. In the last 12 months: 6 sales ($249K).
6 sales (46% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (13 filings), option exercises (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ABOS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.