Algoma Steel Group Inc. (ASTLW) - 13D/13G Filings

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-08-14
4:08 pm
Sale
2026-06-3013GALGOMA STL GROUP INC
ASTL
MMCAP International Inc. SPC10,954,738
10.400%
-1,890,884decrease
(-14.72%)
Filing
History
2026-08-11
11:58 am
Sale
2026-06-3013GALGOMA STL GROUP INC
ASTL
DONALD SMITH & CO. INC.5,277,631
5.000%
-751,298decrease
(-12.46%)
Filing
History
2026-05-15
5:08 pm
Purchase
2026-03-3113GALGOMA STL GROUP INC
ASTL
Maple Rock Capital Partners Inc.15,930,818
15.100%
1,936,888increase
(+13.84%)
Filing
History
2026-05-15
4:29 pm
Purchase
2026-03-3113GALGOMA STL GROUP INC
ASTL
MMCAP International Inc. SPC12,845,622
12.200%
1,357,761increase
(+11.82%)
Filing
History
2026-05-13
2:50 pm
Purchase
2026-03-3113GALGOMA STL GROUP INC
ASTL
DONALD SMITH & CO. INC.6,028,929
5.800%
167,298increase
(+2.85%)
Filing
History
2026-02-17
4:00 pm
Purchase
2025-12-3113GALGOMA STL GROUP INC
ASTL
MMCAP International Inc. SPC11,487,861
10.900%
955,308increase
(+9.07%)
Filing
History
2026-02-12
09:21 am
Sale
2025-12-3113GALGOMA STL GROUP INC
ASTL
DONALD SMITH & CO. INC.5,861,631
5.600%
-75,389decrease
(-1.27%)
Filing
History
2025-11-20
2:57 pm
Purchase
2025-11-1813GALGOMA STL GROUP INC
ASTL
MMCAP International Inc. SPC10,532,553
10.000%
2,453,725increase
(+30.37%)
Filing
History
2025-11-14
4:40 pm
Purchase
2025-09-3013GALGOMA STL GROUP INC
ASTL
MMCAP International Inc. SPC8,078,828
7.700%
860,610increase
(+11.92%)
Filing
History
2025-11-12
11:59 am
Sale
2025-09-3013GALGOMA STL GROUP INC
ASTL
DONALD SMITH & CO. INC.5,937,020
5.700%
-103,148decrease
(-1.71%)
Filing
History
2025-11-07
4:12 pm
Purchase
2025-10-3113GALGOMA STL GROUP INC
ASTL
Maple Rock Capital Partners Inc.13,993,930
13.300%
3,563,112increase
(+34.16%)
Filing
History
2025-09-23
4:15 pm
Sale
2025-09-1013DALGOMA STL GROUP INC
ASTL
Zekelman Industries, Inc.3,229,998
3.080%
-1,999,990decrease
(-38.24%)
Filing
History
2025-08-28
6:57 pm
Unchanged
2025-08-2813GALGOMA STL GROUP INC
ASTL
Maple Rock Capital Partners Inc.10,430,818
9.900%
0
(Unchanged)
Filing
History
2025-08-14
8:48 pm
Purchase
2025-08-1213DALGOMA STL GROUP INC
ASTL
Maple Rock Capital Partners Inc.10,430,818
9.900%
2,878,201increase
(+38.11%)
Filing
History
2025-08-14
4:32 pm
Purchase
2025-06-3013GALGOMA STL GROUP INC
ASTL
MMCAP International Inc. SPC7,218,218
6.900%
576,801increase
(+8.68%)
Filing
History
2025-08-14
4:12 pm
Purchase
2025-06-3013GALGOMA STL GROUP INC
ASTL
Stoney Lonesome HF LP5,864,050
5.400%
405,501increase
(+7.43%)
Filing
History
2025-08-13
2:57 pm
Sale
2025-06-3013GALGOMA STL GROUP INC
ASTL
DONALD SMITH & CO. INC.6,040,168
5.800%
-2,047,952decrease
(-25.32%)
Filing
History
2025-05-15
4:47 pm
Sale
2025-03-3113GALGOMA STL GROUP INC
ASTL
MMCAP International Inc. SPC6,641,417
6.300%
-355,911decrease
(-5.09%)
Filing
History
2025-05-13
2:02 pm
Purchase
2025-03-3113GALGOMA STL GROUP INC
ASTL
DONALD SMITH & CO. INC.8,088,120
7.700%
20,517increase
(+0.25%)
Filing
History
2025-05-05
7:07 pm
Purchase
2025-05-0113DALGOMA STL GROUP INC
ASTL
Maple Rock Capital Partners Inc.7,552,617
7.200%
1,460,526increase
(+23.97%)
Filing
History
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