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$ABOS All transactions

Acumen Pharmaceuticals, Inc.

A

$ Value

$20.0M

Shares

6,060,606

Price

$3

Filed

Mar 18

Insider

Name

RA CAPITAL MANAGEMENT, L.P.

Title

CIK

0001346824

Roles

Director 10% Owner

Transaction Details

Transaction Date

2026-03-16

Code

A

Table

Non-Derivative

Ownership

Indirect

Equity Swap

No

Shares After

19,103,785

Footnotes

Held directly by RA Capital Healthcare Fund, L.P. (the "Fund"). | RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund, RA Capital Nexus Fund II, L.P. (the "Nexus Fund II") and a separately managed account (the "Account"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. Each of the Adviser, the Adviser GP, the Fund, the Nexus Fund II, Dr. Kolchinsky, and Mr. Shah disclaims beneficial ownership of any of the reported securities, except to the extent of its or his respective pecuniary interest therein. | Held directly by the Nexus Fund II. | Held directly by the Account.

Filing Info

Accession No.

0001231919-26-000262

Form Type

4

Issuer CIK

0001576885

RA CAPITAL MANAGEMENT, L.P.'s History

Date Ticker Type Value
2026-04-22 ACRV A $7.0M
2026-04-20 VOR $2.7M
2026-04-17 VOR $7.5M
2026-04-15 VOR $859K
2026-04-14 VOR $2.5M
2026-04-13 VOR $8.6M
2026-04-10 VOR $13K
2026-04-09 VOR $2.2M
2026-04-08 VOR $5.8M
2026-04-08 VOR $2.2M

Other Insiders at ABOS (90d)

Insider Bought Sold Last
Meisner Derek M
Chief Legal Officer & Corp Sec
$88K 2026-03-06