TransAlta Corp (TAC) SEC filings

TACNYSEElectric ServicesFiscal year ends December 31Also trades as TACPF, TRNTF, TSLTF

Financials through fiscal 2025, year ended Dec 31, 2025Last filing: 40-F on Feb 27, 2026Score 0/30

$13.21−0.07 (-0.53%)

Close on Nov 13, 2026Market cap $3.92BP/E –Yield –

SEC filings

40 of TransAlta's most recent filings on SEC EDGAR

Document	Form	Period	Filed	Source
Current report	6-K	Sep 30, 2026	Nov 3, 2026	SEC EDGAR
Current report	6-K	Nov 3, 2026	Nov 3, 2026	SEC EDGAR
Current report	6-K	Oct 27, 2026	Oct 28, 2026	SEC EDGAR
Current report	6-K	Oct 22, 2026	Oct 22, 2026	SEC EDGAR
Current report	6-K	Oct 5, 2026	Oct 6, 2026	SEC EDGAR
Current report	6-K	Sep 14, 2026	Sep 14, 2026	SEC EDGAR
Current report	6-K	Jul 31, 2026	Jul 31, 2026	SEC EDGAR
Current report	6-K	Jun 30, 2026	Jul 31, 2026	SEC EDGAR
Current report	6-K	Jul 29, 2026	Jul 29, 2026	SEC EDGAR
Current report	6-K	Jun 30, 2026	Jun 30, 2026	SEC EDGAR
Current report	6-K	Jun 15, 2026	Jun 15, 2026	SEC EDGAR
Current report	6-K	Jun 9, 2026	Jun 9, 2026	SEC EDGAR
Current report	6-K	Jun 9, 2026	Jun 9, 2026	SEC EDGAR
Current report	6-K	Jun 5, 2026	Jun 5, 2026	SEC EDGAR
Current report	6-K	Jun 3, 2026	Jun 4, 2026	SEC EDGAR
Current report	6-K	May 6, 2026	May 6, 2026	SEC EDGAR
Current report	6-K	Mar 31, 2026	May 6, 2026	SEC EDGAR
Current report	6-K	Apr 30, 2026	May 1, 2026	SEC EDGAR
Current report	6-K	Apr 30, 2026	May 1, 2026	SEC EDGAR
Current report	6-K	Apr 29, 2026	Apr 30, 2026	SEC EDGAR
Current report	6-K	Apr 20, 2026	Apr 20, 2026	SEC EDGAR
Current report	6-K	Apr 7, 2026	Apr 7, 2026	SEC EDGAR
Current report	6-K	Mar 12, 2026	Mar 31, 2026	SEC EDGAR
Current report	6-K	Mar 23, 2026	Mar 23, 2026	SEC EDGAR
Current report	6-K	Mar 17, 2026	Mar 17, 2026	SEC EDGAR
Current report	6-K	Mar 17, 2026	Mar 17, 2026	SEC EDGAR
Current report	6-K	Mar 2, 2026	Mar 2, 2026	SEC EDGAR
Current report	6-K	Feb 27, 2026	Feb 27, 2026	SEC EDGAR
Current report	6-K	Feb 27, 2026	Feb 27, 2026	SEC EDGAR
Current report	6-K	Feb 27, 2026	Feb 27, 2026	SEC EDGAR
Current report	6-K	Dec 31, 2025	Feb 27, 2026	SEC EDGAR
Annual report	40-F	Dec 31, 2025	Feb 27, 2026	SEC EDGAR
Current report	6-K	Jan 27, 2026	Jan 28, 2026	SEC EDGAR
Current report	6-K	Dec 22, 2025	Dec 22, 2025	SEC EDGAR
Current report	6-K	Dec 18, 2025	Dec 18, 2025	SEC EDGAR
Current report	6-K	Dec 17, 2025	Dec 17, 2025	SEC EDGAR
Current report	6-K	Dec 15, 2025	Dec 15, 2025	SEC EDGAR
Current report	6-K	Dec 11, 2025	Dec 15, 2025	SEC EDGAR
Current report	6-K	Dec 12, 2025	Dec 15, 2025	SEC EDGAR
Current report	6-K	Dec 9, 2025	Dec 9, 2025	SEC EDGAR

Where these numbers come from

Parsed from the XBRL in TransAlta's annual and quarterly filings with the SEC
Fourth quarters derived from the annual report minus nine months
Every figure in the statements links to its source filing

Against peers

Trailing twelve months. Peers are matched on business description, industry and size. Ticks are peers, the dot is TAC.

Compare: TAC vs AQN · TAC vs BKH · TAC vs BEPC · TAC vs TLN · TAC vs PAM

Revenue growth-15.5% · median 31.8%

Operating margin5.8% · median 13.5%

Company	Revenue	Growth
TLN	$3.44B	+60.8%
TAC	C$2.41B	-15.5%
BKH	$2.34B	+2.8%
AQN	–	–
BEPC	–	–
PAM	–	–

Company

Exchange: NYSE
Industry: Electric Services
Fiscal year ends: December 31
Auditor: Ernst& Young LLP
SEC CIK: 1144800

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