683 Capital Management, LLC - 23 Feb 2026 SCHEDULE 13G Report for Gossamer Bio, Inc. Common Stock, $0.0001 par value per share (GOSS)

Filing Manager
683 Capital Management, LLC
Reporting Manager
683 Capital Management, LLC
Security
Gossamer Bio, Inc. Common Stock, $0.0001 par value per share
Symbol
GOSS
Shares outstanding
235,780,191 shares
Disclosed Ownership
12,331,304 shares
Ownership
5.2%
Form type
SCHEDULE 13G
Filing time
02 Mar 2026, 11:57:56 UTC
Date of event
23 Feb 2026
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
683 Capital Management, LLC 5.2% 12,331,304 0 12,331,304 Ari Zweiman Managing Member
683 Capital Partners, LP 5.2% 12,331,304 0 12,331,304 Ari Zweiman Authorized Person
Ari Zweiman 5.2% 12,331,304 0 12,331,304 Ari Zweiman Self