Maple Rock Capital Partners Inc. - Oct 31, 2025 SCHEDULE 13G/A Report for Algoma Steel Group Inc. Common Shares, no par value (ASTL)

Filing Manager: Maple Rock Capital Partners Inc.
Reporting Manager: Maple Rock Capital Partners Inc.
Security: Algoma Steel Group Inc. Common Shares, no par value
Symbol: ASTL
Shares outstanding: 105M shares
Disclosed Ownership: 14M shares
Ownership: 13.3%
Form type: SCHEDULE 13G/A
Date filed: 11/7/2025, 04:12 PM
Date of event: Oct 31, 2025
Previous filing: Aug 28, 2025
SEC: View on sec.gov

Reporting Managers (2)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Maple Rock Capital Partners Inc.	13.3%	14M	14M	0	/s/ Stephen D. Lane	Stephen D. Lane, Chief Financial Officer
Xavier Majic	13.3%	14M	14M	0	/s/ Xavier Majic	Xavier Majic