0001104659-26-085113.txt : 20260720 0001104659-26-085113.hdr.sgml : 20260720 20260720173009 ACCESSION NUMBER: 0001104659-26-085113 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260716 FILED AS OF DATE: 20260720 DATE AS OF CHANGE: 20260720 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Fairmount Healthcare Fund II L.P. CENTRAL INDEX KEY: 0001769651 ORGANIZATION NAME: STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36177 FILM NUMBER: 261187615 BUSINESS ADDRESS: STREET 1: 200 BARR HARBOR DRIVE STREET 2: SUITE 400 CITY: WEST CONSHOHOCKEN STATE: PA ZIP: 19428 BUSINESS PHONE: (267) 760-4066 MAIL ADDRESS: STREET 1: 200 BARR HARBOR DRIVE STREET 2: SUITE 400 CITY: WEST CONSHOHOCKEN STATE: PA ZIP: 19428 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Harwin Peter Evan CENTRAL INDEX KEY: 0001663607 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36177 FILM NUMBER: 261187613 MAIL ADDRESS: STREET 1: 200 BARR HARBOR DRIVE STREET 2: SUITE 400 CITY: WEST CONSHOHOCKEN STATE: PA ZIP: 19428 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Kiselak Tomas CENTRAL INDEX KEY: 0001830177 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36177 FILM NUMBER: 261187614 MAIL ADDRESS: STREET 1: 200 BARR HARBOR DRIVE STREET 2: SUITE 400 CITY: WEST CONSHOHOCKEN STATE: PA ZIP: 19428 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Fairmount Funds Management LLC CENTRAL INDEX KEY: 0001802528 ORGANIZATION NAME: STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36177 FILM NUMBER: 261187616 BUSINESS ADDRESS: STREET 1: 200 BARR HARBOR DRIVE STREET 2: SUITE 400 CITY: WEST CONSHOHOCKEN STATE: PA ZIP: 19428 BUSINESS PHONE: 267-262-5300 MAIL ADDRESS: STREET 1: 200 BARR HARBOR DRIVE STREET 2: SUITE 400 CITY: WEST CONSHOHOCKEN STATE: PA ZIP: 19428 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: CRESCENT BIOPHARMA, INC. CENTRAL INDEX KEY: 0001253689 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences EIN: 000000000 STATE OF INCORPORATION: E9 FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 300 FIFTH AVENUE CITY: WALTHAM STATE: MA ZIP: 02451 BUSINESS PHONE: 617-430-5595 MAIL ADDRESS: STREET 1: 300 FIFTH AVENUE CITY: WALTHAM STATE: MA ZIP: 02451 FORMER COMPANY: FORMER CONFORMED NAME: GLYCOMIMETICS INC DATE OF NAME CHANGE: 20030711 4 1 tm2620801-1_4seq1.xml OWNERSHIP DOCUMENT X0609 4 2026-07-16 0 0001253689 CRESCENT BIOPHARMA, INC. CBIO 0001802528 Fairmount Funds Management LLC false 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428 1 0 1 0 0001769651 Fairmount Healthcare Fund II L.P. false 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428 1 0 1 0 0001830177 Kiselak Tomas false 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428 1 0 1 0 0001663607 Harwin Peter Evan false 200 BARR HARBOR DRIVE SUITE 400 WEST CONSHOHOCKEN PA 19428 1 0 1 0 0 Ordinary Shares 2026-07-16 4 P 0 853450 14.50 A 3601316 I By Fairmount Healthcare Fund II L.P. Pre-Funded Warrant (Right to Buy) 0.001 2026-07-16 4 P 0 525897 14.499 A Ordinary Shares 525897 2294037 I By Fairmount Healthcare Fund II L.P. Fairmount Funds Management LLC ("Fairmount") is the investment manager for Fairmount Healthcare Fund II L.P. The managers of Fairmount are Peter Harwin and Tomas Kiselak. Fairmount, Mr. Harwin, and Mr. Kiselak disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. The Pre-Funded Warrants have no expiration date and are exercisable at any time after the date of issuance. A holder of Pre-Funded Warrants may not exercise the Pre-Funded Warrant if the holder, together with its affiliates, would beneficially own more than 9.99% of the number of outstanding shares of common stock of the Issuer immediately after giving effect to such exercise. Fairmount may be deemed a director by deputization of Issuer by virtue of the fact that Peter Harwin serves on the board of directors of the Issuer and is a manager of Fairmount. /s/ Tomas Kiselak, Managing Member of Fairmount Funds Management LLC 2026-07-20 /s/ Tomas Kiselak, Managing Member of Fairmount Healthcare Fund II, L.P. 2026-07-20 /s/ Tomas Kiselak 2026-07-20 /s/ Peter Harwin 2026-07-20