SourceCompany

Algoma Steel Group Inc., Annual Information Form for 2025 (Exhibit 99.1 to Form 40-F)

Published by

Algoma Steel / SEC

Date

11 March 2026

Access

Primary source

Link

www.sec.gov/Archives/edgar/data/1860805/000119312526102628/d92446dex99…

Checked

1 October 2026

Events it documents

• 1 December 2025Algoma Steel issues layoff notices to 1,005 unionized workers in Sault Ste. Marie, effective March 23, 2026ActionOtherOntario2 sources