Algoma Steel ASTL SEC Filings

NASDAQ ASTL
$4.49 +0.38 (+9.25%)
At close: Oct 21, 2026 · 4:00 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Algoma Steel Group Inc. (ASTL) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
125-NSEOthers0001354457-26-000999Oct 19, 2026 12:07 AM
26-KCurrent Report0001193125-26-423116Oct 16, 2026 6:50 PM-
36-KCurrent Report0001193125-26-411012Oct 2, 2026 3:36 AM
46-KCurrent Report0001193125-26-379439Sep 2, 2026 8:47 AM
56-KCurrent Report0001193125-26-354524Aug 18, 2026 1:12 AM
66-KCurrent Report0001104659-26-088340Jul 30, 2026 8:10 PM
76-KCurrent Report0001193125-26-306406Jul 17, 2026 11:05 PM
86-KCurrent Report0001193125-26-291071Jul 1, 2026 11:10 PM
96-KCurrent Report0001193125-26-279870Jun 24, 2026 6:09 PM
106-KCurrent Report0001193125-26-257917Jun 5, 2026 10:42 PM
11SCHEDULE 13GBeneficial Ownership Report0000905148-26-002416May 15, 2026 9:08 PM
12SCHEDULE 13GBeneficial Ownership Report0001104659-26-062621May 15, 2026 8:29 PM
136-KCurrent Report0001193125-26-220324May 13, 2026 1:48 AM
146-KCurrent Report0001193125-26-197979May 1, 2026 9:42 PM
156-KCurrent Report0001193125-26-197979May 1, 2026 9:42 PM
166-KCurrent Report0001193125-26-197979May 1, 2026 9:42 PM
176-KCurrent Report0001193125-26-151357Apr 10, 2026 8:33 PM
186-KCurrent Report0001193125-26-145680Apr 7, 2026 8:50 PM
196-KCurrent Report0001193125-26-135093Apr 1, 2026 10:30 PM
206-KCurrent Report0001193125-26-102728Mar 12, 2026 12:34 AM
2140-FQuarterly & Annual Report0001193125-26-102628Mar 12, 2026 10:47 PM
226-KCurrent Report0001193125-26-078311Feb 27, 2026 1:13 AM
23SCHEDULE 13GBeneficial Ownership Report0001104659-26-016330Feb 17, 2026 9:00 PM
24SCHEDULE 13GBeneficial Ownership Report0000814375-26-000014Feb 12, 2026 2:21 PM
256-KCurrent Report0001193125-26-023086Jan 27, 2026 2:01 AM
266-KCurrent Report0001193125-26-007997Jan 9, 2026 12:57 AM
276-KCurrent Report0001193125-25-305255Dec 2, 2025 9:07 PM
286-KCurrent Report0001193125-25-303186Dec 1, 2025 1:30 PM
29SCHEDULE 13GBeneficial Ownership Report0001104659-25-114571Nov 20, 2025 7:57 PM
306-KCurrent Report0001193125-25-284021Nov 17, 2025 2:03 PM
31SCHEDULE 13GBeneficial Ownership Report0001104659-25-112661Nov 14, 2025 9:40 PM
32SCHEDULE 13GBeneficial Ownership Report0000814375-25-000059Nov 12, 2025 4:59 PM
33SCHEDULE 13GBeneficial Ownership Report0000905148-25-003822Nov 7, 2025 9:12 PM
346-KCurrent Report0001193125-25-256940Oct 30, 2025 11:10 PM
356-KCurrent Report0001193125-25-243967Oct 21, 2025 12:51 AM
366-KCurrent Report0001193125-25-227284Oct 2, 2025 12:59 AM
376-KCurrent Report0001193125-25-223442Sep 29, 2025 9:17 PM
38SCHEDULE 13DBeneficial Ownership Report0001193125-25-213334Sep 23, 2025 8:15 PM
39SCHEDULE 13DBeneficial Ownership Report0001193125-25-213334Sep 23, 2025 8:15 PM
40SCHEDULE 13DBeneficial Ownership Report0001193125-25-213334Sep 23, 2025 8:15 PM
416-KCurrent Report0001193125-25-207666Sep 19, 2025 10:32 PM
42SCHEDULE 13GBeneficial Ownership Report0000905148-25-003187Aug 28, 2025 10:57 PM
43SCHEDULE 13DBeneficial Ownership Report0000905148-25-003014Aug 14, 2025 12:48 AM
44SCHEDULE 13GBeneficial Ownership Report0001104659-25-078678Aug 14, 2025 8:32 PM
45SCHEDULE 13GBeneficial Ownership Report0000921895-25-002295Aug 14, 2025 8:12 PM
46SCHEDULE 13GBeneficial Ownership Report0000814375-25-000039Aug 13, 2025 6:57 PM
476-KCurrent Report0001193125-25-168383Jul 30, 2025 12:16 AM
486-KCurrent Report0001193125-25-164142Jul 24, 2025 3:54 PM
496-KCurrent Report0001193125-25-161055Jul 18, 2025 5:15 PM
50SUPPLOthers0001193125-25-161008Jul 18, 2025 4:03 PM
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Algoma Steel Group Inc. SEC Filings API

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