Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001104659-25-119320
Filing Date
2025-12-08
Accepted
2025-12-08 16:30:15
Documents
1
Period of Report
2025-12-04

Document Format Files

Seq Description Document Type Size
1 OWNERSHIP DOCUMENT tm2532982-1_4seq1.html 4  
1 OWNERSHIP DOCUMENT tm2532982-1_4seq1.xml 4 10078
  Complete submission text file 0001104659-25-119320.txt   13232
Mailing Address 300 FIFTH AVENUE WALTHAM MA 02451
Business Address 300 FIFTH AVENUE WALTHAM MA 02451 617-430-5595
CRESCENT BIOPHARMA, INC. (Issuer) CIK: 0001253689 (see all company filings)

EIN.: 000000000 | State of Incorp.: E9 | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)

Mailing Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428
Business Address
Harwin Peter Evan (Reporting) CIK: 0001663607 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-36177 | Film No.: 251556456

Mailing Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428
Business Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428 (267) 760-4066
Fairmount Healthcare Fund II L.P. (Reporting) CIK: 0001769651 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-36177 | Film No.: 251556458

Mailing Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428
Business Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428 267-262-5300
Fairmount Funds Management LLC (Reporting) CIK: 0001802528 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-36177 | Film No.: 251556459

Mailing Address 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428
Business Address
Kiselak Tomas (Reporting) CIK: 0001830177 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-36177 | Film No.: 251556457