Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001415889-25-015836
Filing Date
2025-06-05
Accepted
2025-06-05 18:12:53
Documents
1
Period of Report
2025-06-04

Document Format Files

Seq Description Document Type Size
1 form4-06052025_100655.html 4  
1 form4-06052025_100655.xml 4 14861
  Complete submission text file 0001415889-25-015836.txt   18653
Mailing Address 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116
Business Address 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 6177782500
RA Capital Healthcare Fund LP (Reporting) CIK: 0001315082 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-40551 | Film No.: 251028465

Mailing Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116
Business Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 617-778-2500
RA CAPITAL MANAGEMENT, L.P. (Reporting) CIK: 0001346824 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-40551 | Film No.: 251028466

Mailing Address 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116
Business Address
Kolchinsky Peter (Reporting) CIK: 0001384859 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-40551 | Film No.: 251028463

Mailing Address 1210-1220 WASHINGTON STREET SUITE 210 NEWTON MA 02465
Business Address 1210-1220 WASHINGTON STREET SUITE 210 NEWTON MA 02465 617-344-4190
Acumen Pharmaceuticals, Inc. (Issuer) CIK: 0001576885 (see all company filings)

EIN.: 364108129 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2836 Biological Products, (No Diagnostic Substances)
(CF Office: 03 Life Sciences)

Mailing Address 200 BERKELEY STREET 18TH FLOOR BOSTON MA 02116
Business Address
Shah Rajeev M. (Reporting) CIK: 0001619841 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-40551 | Film No.: 251028462

Mailing Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116
Business Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 617-778-2500
RA Capital Nexus Fund II, L.P. (Reporting) CIK: 0001825376 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-40551 | Film No.: 251028464