Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001231919-26-000429
Filing Date
2026-04-29
Accepted
2026-04-29 18:46:09
Documents
1
Period of Report
2026-04-29

Document Format Files

Seq Description Document Type Size
1 form4-04292026_100401.html 4  
1 form4-04292026_100401.xml 4 13409
  Complete submission text file 0001231919-26-000429.txt   18443
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.: 001-40708 | Film No.: 26918938

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.: 001-40708 | Film No.: 26918939

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.: 001-40708 | Film No.: 26918934

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.: 001-40708 | Film No.: 26918933

Mailing Address 20 WILLIAM STREET SUITE 145 WELLESLEY HILLS MA 02481
Business Address 20 WILLIAM STREET SUITE 145 WELLESLEY HILLS MA 02481 1-866-857-2596
Climb Bio, Inc. (Issuer) CIK: 0001768446 (see all company filings)

EIN.: 832273741 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)

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, L.P. (Reporting) CIK: 0001780117 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-40708 | Film No.: 26918937

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.: 001-40708 | Film No.: 26918936

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 III, L.P. (Reporting) CIK: 0001883840 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-40708 | Film No.: 26918935