RA CAPITAL MANAGEMENT, L.P.

PrivateCIK: 1346824
Location

BOSTON, MA

RA CAPITAL MANAGEMENT, L.P. received a stock award from ACUMEN PHARMACEUTICALS, INC.

Compensation award — not an open‑market transaction. Less informative as a directional signal.

A · 1 award
InsiderRA CAPITAL MANAGEMENT, L.P.CIK 1346824
Director10% Owner
Since Jun 2021
+6.06M
Net shares
Net buyer
$20.00M
Total acquired
0
Open market trades
0B · 0S
1
Total transactions
6.06M acquired
Non-Derivative Transactions1

Common Stock

Indirect
A · Award

Shares

+6.06M

Price / share

$3.30

Trade value

$20M

% of position

46.5%
3/16/2026
13.04M19.10M
Total

Net shares

+6.06M

Net value

$20M

Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect
Shares owned1.30M

Common Stock

Indirect
Shares owned588.85K
Total
1.89M indirect1.89M
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
RA CAPITAL MANAGEMENT, L.P. — Insider Transaction (Form 4) Filed Mar 18, 2026 | Finecho