Maple Rock Capital Partners Inc. - 31 Oct 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
105,217,519 shares
Disclosed Ownership
13,993,930 shares
Ownership
13%
Form type
SCHEDULE 13G/A
Filing time
07 Nov 2025, 16:12:18 UTC
Date of event
31 Oct 2025
Previous filing
28 Aug 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% 13,993,930 13,993,930 0 /s/ Stephen D. Lane Stephen D. Lane, Chief Financial Officer
Xavier Majic 13% 13,993,930 13,993,930 0 /s/ Xavier Majic Xavier Majic