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TransAlta Corporation (TAC)

NYSE: TAC · Electric Services · Calgary, AB · filing with the SEC since 2001
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Grade3.4
◀ Past 4.4● Present 3.7▶ Future 2.2
1 est.
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Filings

456 filings since 2017 · read from EDGAR on Nov 13, 2026
Due next
40-F Annual report, Canadian filer for the fiscal year ending Dec 31, 2026Foreign filers have four months after the fiscal year ends. by Apr 30, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files.

Filings a yearinsider forms included
6946484544335042
20192020202120222023202420252026

2026 counts to Nov 13, 2026.

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 3, 2026 6-K Interim report, foreign filer Sep 30, 2026
Nov 3, 2026 6-K Interim report, foreign filer
Oct 28, 2026 6-K Interim report, foreign filer Oct 27, 2026
Oct 22, 2026 6-K Interim report, foreign filer
Oct 6, 2026 6-K Interim report, foreign filer Oct 5, 2026
Sep 14, 2026 6-K Interim report, foreign filer
Jul 31, 2026 6-K Interim report, foreign filer
Jul 31, 2026 6-K Interim report, foreign filer Jun 30, 2026
Jul 29, 2026 6-K Interim report, foreign filer
Jun 30, 2026 6-K Interim report, foreign filer
Jun 15, 2026 6-K Interim report, foreign filer
Jun 9, 2026 6-K Interim report, foreign filer
Jun 9, 2026 6-K Interim report, foreign filer
Jun 5, 2026 6-K Interim report, foreign filer
Jun 5, 2026 SUPPL Form SUPPL
Jun 4, 2026 6-K Interim report, foreign filer Jun 3, 2026
Jun 3, 2026 FWP Offering communication
Jun 3, 2026 FWP Offering communication
Jun 3, 2026 FWP Offering communication
Jun 3, 2026 SUPPL Form SUPPL
May 13, 2026 SCHEDULE 13G Large holder notice
May 6, 2026 6-K Interim report, foreign filer
May 6, 2026 6-K Interim report, foreign filer Mar 31, 2026
May 6, 2026 SCHEDULE 13G/A Large holder update, amended
May 1, 2026 6-K Interim report, foreign filer Apr 30, 2026
May 1, 2026 6-K Interim report, foreign filer Apr 30, 2026
Apr 30, 2026 6-K Interim report, foreign filer Apr 29, 2026
Apr 20, 2026 6-K Interim report, foreign filer
Apr 7, 2026 6-K Interim report, foreign filer
Mar 31, 2026 6-K Interim report, foreign filer Mar 12, 2026
Mar 23, 2026 6-K Interim report, foreign filer
Mar 17, 2026 6-K Interim report, foreign filer
Mar 17, 2026 6-K Interim report, foreign filer
Mar 2, 2026 6-K Interim report, foreign filer
Feb 27, 2026 6-K Interim report, foreign filer
Feb 27, 2026 6-K Interim report, foreign filer
Feb 27, 2026 6-K Interim report, foreign filer
Feb 27, 2026 6-K Interim report, foreign filer Dec 31, 2025
Feb 27, 2026 40-F Annual report, Canadian filer Dec 31, 2025
Feb 13, 2026 SCHEDULE 13G/A Large holder update, amended
40 of 456 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton TAC · research, not advice