Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001628280-26-040575
Filing Date
2026-06-03
Accepted
2026-06-03 19:46:38
Documents
1
Period of Report
2026-06-02

Document Format Files

Seq Description Document Type Size
1 FORM 4 wk-form4_1780530395.html 4  
1 FORM 4 wk-form4_1780530395.xml 4 8864
  Complete submission text file 0001628280-26-040575.txt   12008
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.: 261062774

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.: 261062775

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.: 261062776

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.: 261062773