Algoma Steel (ASTL) details Q3 2025 results and leadership transition in Form 6-K

Rhea-AI Filing Summary

Algoma Steel Group Inc. filed a Form 6-K as a foreign private issuer, mainly to furnish materials related to its third quarter of 2025. The filing lists a press release announcing financial results for the three months ended September 30, 2025, along with another press release describing a leadership transition at the company.

The submission also includes management’s discussion and analysis for the three and nine months ended September 30, 2025 and condensed interim consolidated financial statements for the same periods. Two of these exhibits are incorporated by reference into Algoma Steel Group’s existing Form S-8 and Form F-10 registration statements, linking the latest quarterly information to prior securities registration documents.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of October 2025

Commission File Number 001-40924

ALGOMA STEEL GROUP INC.

(Exact name of Registrant as specified in its charter)

N/A

(Translation of Registrant’s name into English)

105 West Street

Sault Ste. Marie, Ontario

P6A 7B4, Canada

(705) 945-2351

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☐   Form 40-F ☒

INCORPORATION BY REFERENCE

Exhibits 99.3 and 99.4 of this Form 6-K are incorporated by reference into the Registration Statement on Form S-8 (Commission File No. 333-264063) and the Registration Statement on Form F-10 (Commission File No. 333-288748) of the Registrant, Algoma Steel Group Inc.

2

EXHIBIT INDEX

Exhibit Number		Description
99.1		Press release dated October 29, 2025 regarding financial results for the third quarter of 2025.
99.2		Press release dated October 29, 2025 regarding leadership transition.
99.3		Management’s discussion and analysis for the three and nine months ended September 30, 2025.
99.4		Condensed interim consolidated financial statements for the three and nine months ended September 30, 2025.

3

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

				Algoma Steel Group Inc.
Date: October 29, 2025				By:		/s/ John Naccarato
						Name: John Naccarato
						Title: Vice President Strategy and Chief Legal Officer

4

FAQ

What does Algoma Steel Group Inc. (ASTL) report in this Form 6-K?

The Form 6-K from Algoma Steel Group Inc. furnishes materials for the third quarter of 2025, including a press release on quarterly financial results, a press release on a leadership transition, management’s discussion and analysis for the three and nine months ended September 30, 2025, and condensed interim consolidated financial statements for those periods.

Does the Algoma Steel (ASTL) Form 6-K include financial statements?

Yes. The Form 6-K includes condensed interim consolidated financial statements for Algoma Steel Group Inc. covering the three and nine months ended September 30, 2025, along with the related management’s discussion and analysis.

What leadership information is disclosed in Algoma Steel’s (ASTL) October 2025 Form 6-K?

The Form 6-K lists a press release dated October 29, 2025 regarding a leadership transition at Algoma Steel Group Inc. The detailed description of the transition is contained in that exhibit.

How is this Algoma Steel (ASTL) Form 6-K connected to existing registration statements?

Exhibits 99.3 and 99.4—the management’s discussion and analysis and the condensed interim consolidated financial statements—are incorporated by reference into Algoma Steel Group Inc.’s Registration Statement on Form S-8 (File No. 333-264063) and Form F-10 (File No. 333-288748).

What period does Algoma Steel’s (ASTL) Q3 2025 MD&A in this Form 6-K cover?

The management’s discussion and analysis in this Form 6-K covers the three and nine months ended September 30, 2025, aligning with the condensed interim consolidated financial statements for the same periods.