MEISNER DEREK M (Chief Legal Officer & Corp Sec) sold 5.1% of their position (9.41K shares) of ACUMEN PHARMACEUTICALS, INC. on the open market
Open‑market sale worth $28.3K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 3/3/2026ACC: 0001628280-26-014365
Officer· Chief Legal Officer & Corp Sec
Since Feb 2026
-9.41K
Net shares
Net seller
$28.3K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
9.41K acquired · 18.81K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
+9.41K
Price / share
$1.85
Trade value
$17.40K
% of position
5.4%
2/27/2026
174K→183.41K
Common Stock
Direct
Shares
−9.41K
Price / share
$3.01
Trade value
$28.31K
% of position
5.1%
2/27/2026
183.41K→174K
Total
Net shares
+0.00
Net value
-$10.91K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 2/27/2026 | M · Option Exercise | +9.41K | $1.85 | $17.40K | 5.4% | 174K | 183.41K |
| Common Stock Direct | 2/27/2026 | S · Sale | −9.41K | $3.01 | $28.31K | 5.1% | 183.41K | 174K |
| Total | +0.00 | -$10.91K | ||||||
Derivative Transactions1
Employee Stock Option (right to buy)
Direct
Converts to
Common Stock
9.41K shares
Shares
−9.41K
Strike price
1.85
Held after
73.14K
Exercisable
—
2/27/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Employee Stock Option (right to buy) Direct | Common Stock9.41K shares | 2/27/2026 | M · Option Exercise | −9.41K | 1.85 | — | 73.14K |