Magnetar Financial LLC - Oct 17, 2025 SCHEDULE 13D Report for Astria Therapeutics, Inc. Common Stock, par value $0.001 per share (ATXS)

Filing Manager
Magnetar Financial LLC
Reporting Manager
Magnetar Financial LLC
Security
Astria Therapeutics, Inc. Common Stock, par value $0.001 per share
Symbol
ATXS
Shares outstanding
56.4M shares
Disclosed Ownership
3.31M shares
Ownership
5.87%
Form type
SCHEDULE 13D
Date filed
10/24/2025, 11:00 AM
Date of event
Oct 17, 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Magnetar Financial LLC 5.87% 3.31M 0 3.31M /s/ Hayley Stein Hayley Stein, Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Mgmt LLC, GP of Magnetar Capital Partners LP, its Sol Mem 0001352851
Magnetar Capital Partners LP 5.87% 3.31M 0 3.31M /s/ Hayley Stein Hayley Stein, Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC, its General Partner 0001353085
Supernova Management LLC 5.87% 3.31M 0 3.31M /s/ Hayley Stein Hayley Stein, Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC 0001368026
David J. Snyderman 5.87% 3.31M 0 3.31M /s/ Hayley Stein Hayley Stein, Attorney-in-fact for David J. Snyderman 0001953511