Magnetar Financial LLC - 17 Oct 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
56,425,928 shares
Disclosed Ownership
3,312,202 shares
Ownership
5.9%
Form type
SCHEDULE 13D
Filing time
24 Oct 2025, 11:00:54 UTC
Date of event
17 Oct 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 5.9% 3,312,202 0 3,312,202 /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 5.9% 3,312,202 0 3,312,202 /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 5.9% 3,312,202 0 3,312,202 /s/ Hayley Stein Hayley Stein, Attorney-in-fact for David J. Snyderman, Administrative Manager of Supernova Management LLC 0001368026
David J. Snyderman 5.9% 3,312,202 0 3,312,202 /s/ Hayley Stein Hayley Stein, Attorney-in-fact for David J. Snyderman 0001953511