Algoma Steel Group Inc. SEC filings ASTL
Algoma Steel Group Inc. has 310 filings in SEC EDGAR's recent list, going back to May 25, 2021. Its latest annual report, Form 40-F, was filed on Mar 12, 2026 for the period ended Dec 31, 2025. The most recent current report (Form 6-K) was filed on Oct 29, 2026. The company's fiscal year ends on March 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 6-K | Current report (foreign issuer) | Oct 29, 2026 | Oct 28, 2026 |
| 25-NSE | Delisting notice | Oct 19, 2026 | — |
| 6-K | Current report (foreign issuer) | Oct 16, 2026 | Oct 15, 2026 |
| 6-K | Current report (foreign issuer) | Oct 2, 2026 | Oct 1, 2026 |
| 6-K | Current report (foreign issuer) | Sep 2, 2026 | Sep 2, 2026 |
| 6-K | Current report (foreign issuer) | Aug 18, 2026 | Aug 17, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 11, 2026 | — |
| 6-K | Current report (foreign issuer) | Jul 30, 2026 | Jun 30, 2026 |
| 6-K | Current report (foreign issuer) | Jul 17, 2026 | Jul 16, 2026 |
| 6-K | Current report (foreign issuer) | Jul 1, 2026 | Jun 30, 2026 |
| 6-K | Current report (foreign issuer) | Jun 24, 2026 | Jun 23, 2026 |
| 6-K | Current report (foreign issuer) | Jun 5, 2026 | Jun 4, 2026 |
| 6-K | Current report (foreign issuer) | May 22, 2026 | May 22, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2026 | — |
| 6-K | Current report (foreign issuer) | May 13, 2026 | May 12, 2026 |
| 6-K | Current report (foreign issuer) | May 1, 2026 | Apr 30, 2026 |
| 6-K | Current report (foreign issuer) | Apr 10, 2026 | Apr 10, 2026 |
| 6-K | Current report (foreign issuer) | Apr 7, 2026 | Apr 7, 2026 |
| 6-K | Current report (foreign issuer) | Apr 1, 2026 | Mar 31, 2026 |
| 6-K | Current report (foreign issuer) | Mar 12, 2026 | Mar 11, 2026 |
| 40-F | Annual report (Canadian issuer) | Mar 12, 2026 | Dec 31, 2025 |
| 6-K | Current report (foreign issuer) | Feb 27, 2026 | Feb 26, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 12, 2026 | — |
| 6-K | Current report (foreign issuer) | Jan 27, 2026 | Jan 26, 2026 |
| 6-K | Current report (foreign issuer) | Jan 9, 2026 | Jan 8, 2026 |
| 6-K | Current report (foreign issuer) | Dec 2, 2025 | Dec 2, 2025 |
| 6-K | Current report (foreign issuer) | Dec 1, 2025 | Dec 1, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 20, 2025 | — |
| 6-K | Current report (foreign issuer) | Nov 17, 2025 | Nov 17, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 12, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 7, 2025 | — |
| 6-K | Current report (foreign issuer) | Oct 30, 2025 | Oct 29, 2025 |
| 6-K | Current report (foreign issuer) | Oct 21, 2025 | Oct 20, 2025 |
| 6-K | Current report (foreign issuer) | Oct 2, 2025 | Oct 1, 2025 |
| 6-K | Current report (foreign issuer) | Sep 29, 2025 | Sep 29, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 23, 2025 | — |
| 6-K | Current report (foreign issuer) | Sep 19, 2025 | Sep 18, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 28, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 13, 2025 | — |
| 6-K | Current report (foreign issuer) | Jul 30, 2025 | Jul 29, 2025 |
| 6-K | Current report (foreign issuer) | Jul 24, 2025 | Jul 24, 2025 |
| 6-K | Current report (foreign issuer) | Jul 18, 2025 | Jul 18, 2025 |
| SUPPL | Filing | Jul 18, 2025 | — |
| F-X | Filing | Jul 18, 2025 | — |
| F-10 | Filing | Jul 18, 2025 | — |
| 6-K | Current report (foreign issuer) | Jul 16, 2025 | Jul 15, 2025 |
| 6-K | Current report (foreign issuer) | Jul 10, 2025 | Jul 10, 2025 |
| 6-K | Current report (foreign issuer) | Jun 25, 2025 | Jun 24, 2025 |
| 6-K | Current report (foreign issuer) | Jun 5, 2025 | Jun 4, 2025 |
| 6-K | Current report (foreign issuer) | May 21, 2025 | May 21, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | May 5, 2025 | — |
| 6-K | Current report (foreign issuer) | Apr 30, 2025 | Apr 29, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 29, 2025 | — |
| 6-K | Current report (foreign issuer) | Apr 23, 2025 | Apr 22, 2025 |
| 6-K | Current report (foreign issuer) | Apr 10, 2025 | Apr 10, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 10, 2025 | — |
| 6-K | Current report (foreign issuer) | Mar 13, 2025 | Mar 12, 2025 |
| 40-F | Annual report (Canadian issuer) | Mar 13, 2025 | Dec 31, 2024 |
| 6-K | Current report (foreign issuer) | Feb 28, 2025 | Feb 27, 2025 |
| 6-K | Current report (foreign issuer) | Feb 24, 2025 | Feb 24, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 13, 2025 | — |
| 6-K | Current report (foreign issuer) | Jan 3, 2025 | Jan 2, 2025 |
| 6-K | Current report (foreign issuer) | Dec 4, 2024 | Dec 3, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2024 | — |
| 6-K | Current report (foreign issuer) | Nov 7, 2024 | Nov 6, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 5, 2024 | — |
| 6-K | Current report (foreign issuer) | Oct 30, 2024 | Oct 29, 2024 |
| SC 13D | Ownership over 5% (active) | Oct 25, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Oct 25, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Oct 22, 2024 | — |
| 6-K | Current report (foreign issuer) | Sep 27, 2024 | Sep 26, 2024 |
| 6-K | Current report (foreign issuer) | Sep 25, 2024 | Sep 24, 2024 |
| 144 | Notice of proposed sale | Sep 16, 2024 | — |
| 6-K | Current report (foreign issuer) | Sep 4, 2024 | Sep 3, 2024 |
| 6-K | Current report (foreign issuer) | Aug 30, 2024 | Aug 29, 2024 |
| 6-K | Current report (foreign issuer) | Aug 28, 2024 | Aug 28, 2024 |
| 6-K | Current report (foreign issuer) | Aug 22, 2024 | Aug 22, 2024 |
| 6-K | Current report (foreign issuer) | Aug 14, 2024 | Aug 14, 2024 |
| 6-K | Current report (foreign issuer) | Aug 13, 2024 | Aug 12, 2024 |
| 6-K | Current report (foreign issuer) | Aug 7, 2024 | Aug 6, 2024 |
| SC 13D | Ownership over 5% (active) | Jul 31, 2024 | — |
| 6-K | Current report (foreign issuer) | Jul 12, 2024 | Jul 12, 2024 |
| 6-K | Current report (foreign issuer) | Jun 24, 2024 | Jun 24, 2024 |
| 6-K | Current report (foreign issuer) | Jun 21, 2024 | Jun 20, 2024 |
| 40-F | Annual report (Canadian issuer) | Jun 21, 2024 | Mar 31, 2024 |
| 6-K | Current report (foreign issuer) | Jun 11, 2024 | Jun 11, 2024 |
| 6-K | Current report (foreign issuer) | Jun 7, 2024 | Jun 6, 2024 |
| 6-K | Current report (foreign issuer) | Apr 10, 2024 | Apr 10, 2024 |
| 6-K | Current report (foreign issuer) | Mar 27, 2024 | Mar 26, 2024 |
| 6-K | Current report (foreign issuer) | Mar 26, 2024 | Mar 25, 2024 |
| 6-K | Current report (foreign issuer) | Mar 25, 2024 | Mar 25, 2024 |
| 6-K | Current report (foreign issuer) | Feb 26, 2024 | Feb 26, 2024 |
| SC 13G | Ownership over 5% (passive) | Feb 20, 2024 | — |
| 6-K | Current report (foreign issuer) | Feb 15, 2024 | Feb 14, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| 6-K | Current report (foreign issuer) | Feb 9, 2024 | Feb 9, 2024 |
| 6-K | Current report (foreign issuer) | Feb 7, 2024 | Feb 6, 2024 |
| SC 13G | Ownership over 5% (passive) | Feb 5, 2024 | — |
| 6-K | Current report (foreign issuer) | Jan 30, 2024 | Jan 29, 2024 |
| 6-K | Current report (foreign issuer) | Jan 23, 2024 | Jan 23, 2024 |
| 6-K | Current report (foreign issuer) | Jan 22, 2024 | Jan 22, 2024 |
| 6-K | Current report (foreign issuer) | Jan 4, 2024 | Jan 3, 2024 |
| 6-K | Current report (foreign issuer) | Dec 22, 2023 | Dec 21, 2023 |
| 144 | Notice of proposed sale | Dec 19, 2023 | — |
| 6-K | Current report (foreign issuer) | Nov 24, 2023 | Nov 24, 2023 |
| 144 | Notice of proposed sale | Nov 13, 2023 | — |
| 6-K | Current report (foreign issuer) | Nov 3, 2023 | Nov 3, 2023 |
| 6-K | Current report (foreign issuer) | Oct 24, 2023 | Oct 23, 2023 |
| 6-K | Current report (foreign issuer) | Oct 3, 2023 | Oct 2, 2023 |
| 6-K | Current report (foreign issuer) | Sep 29, 2023 | Sep 28, 2023 |
| 6-K | Current report (foreign issuer) | Sep 27, 2023 | Sep 26, 2023 |
| 6-K | Current report (foreign issuer) | Sep 19, 2023 | Sep 19, 2023 |
| 6-K | Current report (foreign issuer) | Sep 13, 2023 | Sep 12, 2023 |
| 6-K | Current report (foreign issuer) | Sep 1, 2023 | Aug 31, 2023 |
| 6-K | Current report (foreign issuer) | Aug 23, 2023 | Aug 23, 2023 |
| 6-K | Current report (foreign issuer) | Aug 11, 2023 | Aug 10, 2023 |
| 6-K | Current report (foreign issuer) | Jul 31, 2023 | Jul 31, 2023 |
| 6-K | Current report (foreign issuer) | Jul 17, 2023 | Jul 17, 2023 |
| EFFECT | Filing | Jun 27, 2023 | — |
| POS AM | Filing | Jun 23, 2023 | — |
| 6-K | Current report (foreign issuer) | Jun 23, 2023 | Jun 22, 2023 |
| SUPPL | Filing | Jun 23, 2023 | — |
| 6-K | Current report (foreign issuer) | Jun 22, 2023 | Jun 21, 2023 |
| F-X | Form f-x | Jun 22, 2023 | — |
| F-10 | Filing | Jun 22, 2023 | — |
| POS EX | Filing | Jun 22, 2023 | — |
| 424B3 | Prospectus | Jun 22, 2023 | — |
| F-X | Form f-x | Jun 22, 2023 | — |
| 40-F | Annual report (Canadian issuer) | Jun 22, 2023 | Mar 31, 2023 |
| 424B3 | Prospectus | Jun 16, 2023 | — |
| 6-K | Current report (foreign issuer) | Jun 16, 2023 | Jun 16, 2023 |
| 6-K | Current report (foreign issuer) | Jun 7, 2023 | Jun 7, 2023 |
| 424B3 | Prospectus | May 26, 2023 | — |
| 6-K | Current report (foreign issuer) | May 26, 2023 | May 26, 2023 |
| POS EX | Filing | May 26, 2023 | — |
| UPLOAD | Letter from the SEC | May 2, 2023 | — |
| 6-K | Current report (foreign issuer) | Apr 7, 2023 | Apr 6, 2023 |
| CORRESP | Letter to the SEC | Apr 6, 2023 | — |
| CORRESP | Letter to the SEC | Mar 31, 2023 | — |
| 424B3 | Prospectus | Mar 31, 2023 | — |
| 6-K | Current report (foreign issuer) | Mar 31, 2023 | Mar 30, 2023 |
| 424B3 | Prospectus | Mar 30, 2023 | — |
| 6-K | Current report (foreign issuer) | Mar 30, 2023 | Mar 29, 2023 |
| 424B3 | Prospectus | Mar 14, 2023 | — |
| 6-K | Current report (foreign issuer) | Mar 14, 2023 | Mar 13, 2023 |
| UPLOAD | Letter from the SEC | Mar 10, 2023 | — |
| 424B3 | Prospectus | Mar 2, 2023 | — |
| 6-K | Current report (foreign issuer) | Mar 2, 2023 | Mar 1, 2023 |
| 424B3 | Prospectus | Feb 17, 2023 | — |
| 6-K | Current report (foreign issuer) | Feb 17, 2023 | Feb 16, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2023 | — |
| 6-K | Current report (foreign issuer) | Feb 14, 2023 | Feb 13, 2023 |
| 424B3 | Prospectus | Feb 14, 2023 | — |
| 6-K | Current report (foreign issuer) | Feb 14, 2023 | Feb 13, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2023 | — |
| 6-K | Current report (foreign issuer) | Feb 2, 2023 | Feb 1, 2023 |
| SC 13G | Ownership over 5% (passive) | Jan 12, 2023 | — |
| 424B3 | Prospectus | Jan 10, 2023 | — |
| 6-K | Current report (foreign issuer) | Jan 10, 2023 | Jan 9, 2023 |
| 6-K | Current report (foreign issuer) | Nov 8, 2022 | Nov 7, 2022 |
| 424B3 | Prospectus | Nov 8, 2022 | — |
| 6-K | Current report (foreign issuer) | Nov 8, 2022 | Nov 7, 2022 |
| 6-K | Current report (foreign issuer) | Oct 27, 2022 | Oct 26, 2022 |
| 6-K | Current report (foreign issuer) | Oct 13, 2022 | Oct 12, 2022 |
| 424B3 | Prospectus | Sep 28, 2022 | — |
| 6-K | Current report (foreign issuer) | Sep 28, 2022 | Sep 28, 2022 |
| 424B3 | Prospectus | Sep 21, 2022 | — |
| 6-K | Current report (foreign issuer) | Sep 21, 2022 | Sep 20, 2022 |
| 424B3 | Prospectus | Aug 30, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 30, 2022 | Aug 30, 2022 |
| 424B3 | Prospectus | Aug 24, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 24, 2022 | Aug 23, 2022 |
| 424B3 | Prospectus | Aug 18, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 18, 2022 | Aug 18, 2022 |
| 424B3 | Prospectus | Aug 15, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 15, 2022 | Aug 15, 2022 |
| 424B3 | Prospectus | Aug 10, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 10, 2022 | Aug 10, 2022 |
| 424B3 | Prospectus | Aug 8, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 8, 2022 | Aug 8, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 5, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 4, 2022 | Aug 3, 2022 |
| 424B3 | Prospectus | Aug 4, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 4, 2022 | Aug 3, 2022 |
| 424B3 | Prospectus | Aug 2, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 2, 2022 | Aug 2, 2022 |
| SC TO-I/A | Filing | Aug 2, 2022 | — |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) (SIC 3312)
- Listed as
- ASTL (Nasdaq), ASTLW (Nasdaq)
- Fiscal year ends
- March 31
- Incorporated in
- British Columbia, Canada
- Headquarters
- Sault Ste. Marie, Ontario, Canada
- SEC filer status
- Non-accelerated filer
- SEC CIK
- 1860805
- Former names
- 1295908 B.C. LTD. (until Jun 21, 2021)
Other Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) companies
- Nucor Corp NUE
- ArcelorMittal MT
- Steel Dynamics Inc STLD
- Tenaris SA TS
- Posco Holdings Inc. PKX
- Carpenter Technology Corp CRS
- COMMERCIAL METALS Co CMC
- GRUPO SIMEC, S.A.B. de C.V. SIM
All 13 Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.