Filing Details

Accession Number:
0001104659-25-067760
Form Type:
13D Filing
Publication Date:
2025-07-13 20:00:00
Filed By:
Fairmount Funds Management LLC
Company:
Cogent Biosciences Inc. (NASDAQ:COGT)
Filing Date:
2025-07-14
SEC Url:
13D Filing
Ownership Summary

Please notice the below summary table is generated without human intervention and may contain errors. Please refer to the complete filing displayed below for exact figures.

Name Sole Voting Power Shared Voting Power Sole Dispositive Power Shared Dispositive Power Aggregate Amount Owned Power Percent of Class
Fairmount Funds Management LLC 0 14,324,918 0 14,324,918 14,324,918 9.9%
Fairmount Healthcare Fund II GP LLC 0 14,324,918 0 14,324,918 14,324,918 9.9%
Filing





If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Checkbox not checked

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






SCHEDULE 13D



Comment for Type of Reporting Person:
The securities include (a) 9,003,418 shares of common stock, $0.001 par value ("Common Stock"), and (b) 5,325,500 shares of Common Stock issuable upon conversion of approximately 21,302 shares of Series A Convertible Preferred Stock, par value $0.001 per share (the "Series A Preferred Stock") directly held by Fairmount Healthcare Fund II L.P. ("Fund II"). The securities exclude shares of Common Stock issuable upon conversion of shares of Series A Preferred Stock held directly by Fund II in excess of the beneficial ownership limitation of 9.9%. Row 13 is based on 139,412,010 shares of Common Stock outstanding, consisting of 113,856,454 shares of Common Stock outstanding as of May 2, 2025 plus 25,555,556 shares of Common Stock sold in the Offering (as defined below).


SCHEDULE 13D



Comment for Type of Reporting Person:
The securities include (a) 9,003,418 shares of Common Stock and (b) 5,325,500 shares of Common Stock issuable upon conversion of approximately 21,302 shares of Series A Preferred Stock directly held by Fund II. The securities exclude shares of Common Stock issuable upon conversion of shares of Series A Preferred Stock held directly by Fund II in excess of the beneficial ownership limitation of 9.9%. Row 13 is based on 139,412,010 shares of Common Stock outstanding, consisting of 113,856,454 shares of Common Stock outstanding as of May 2, 2025 plus 25,555,556 shares of Common Stock sold in the Offering.


SCHEDULE 13D

 
Fairmount Funds Management LLC
 
Signature:/s/ Peter Harwin
Name/Title:Peter Harwin, Managing Member
Date:07/14/2025
 
Signature:/s/ Tomas Kiselak
Name/Title:Tomas Kiselak, Managing Member
Date:07/14/2025
 
Fairmount Healthcare Fund II GP LLC
 
Signature:/s/ Peter Harwin
Name/Title:Peter Harwin, Managing Member
Date:07/14/2025
 
Signature:/s/ Tomas Kiselak
Name/Title:Tomas Kiselak, Managing Member
Date:07/14/2025