Transalta Corp SEC filings TAC
Transalta Corp has 1,000 filings in SEC EDGAR's recent list, going back to Dec 3, 2004. Its latest annual report, Form 40-F, was filed on Feb 27, 2026 for the period ended Dec 31, 2025. The most recent current report (Form 6-K) was filed on Nov 3, 2026. The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 6-K | Current report (foreign issuer) | Nov 3, 2026 | Sep 30, 2026 |
| 6-K | Current report (foreign issuer) | Nov 3, 2026 | Nov 3, 2026 |
| 6-K | Current report (foreign issuer) | Oct 28, 2026 | Oct 27, 2026 |
| 6-K | Current report (foreign issuer) | Oct 22, 2026 | Oct 22, 2026 |
| 6-K | Current report (foreign issuer) | Oct 6, 2026 | Oct 5, 2026 |
| 6-K | Current report (foreign issuer) | Sep 14, 2026 | Sep 14, 2026 |
| 6-K | Current report (foreign issuer) | Jul 31, 2026 | Jul 31, 2026 |
| 6-K | Current report (foreign issuer) | Jul 31, 2026 | Jun 30, 2026 |
| 6-K | Current report (foreign issuer) | Jul 29, 2026 | Jul 29, 2026 |
| 6-K | Current report (foreign issuer) | Jun 30, 2026 | Jun 30, 2026 |
| 6-K | Current report (foreign issuer) | Jun 15, 2026 | Jun 15, 2026 |
| 6-K | Current report (foreign issuer) | Jun 9, 2026 | Jun 9, 2026 |
| 6-K | Current report (foreign issuer) | Jun 9, 2026 | Jun 9, 2026 |
| 6-K | Current report (foreign issuer) | Jun 5, 2026 | Jun 5, 2026 |
| SUPPL | Filing | Jun 5, 2026 | — |
| 6-K | Current report (foreign issuer) | Jun 4, 2026 | Jun 3, 2026 |
| FWP | Free writing prospectus | Jun 3, 2026 | — |
| FWP | Free writing prospectus | Jun 3, 2026 | — |
| FWP | Free writing prospectus | Jun 3, 2026 | — |
| SUPPL | Filing | Jun 3, 2026 | — |
| 6-K | Current report (foreign issuer) | May 6, 2026 | May 6, 2026 |
| 6-K | Current report (foreign issuer) | May 6, 2026 | Mar 31, 2026 |
| 6-K | Current report (foreign issuer) | May 1, 2026 | Apr 30, 2026 |
| 6-K | Current report (foreign issuer) | May 1, 2026 | Apr 30, 2026 |
| 6-K | Current report (foreign issuer) | Apr 30, 2026 | Apr 29, 2026 |
| 6-K | Current report (foreign issuer) | Apr 20, 2026 | Apr 20, 2026 |
| 6-K | Current report (foreign issuer) | Apr 7, 2026 | Apr 7, 2026 |
| 6-K | Current report (foreign issuer) | Mar 31, 2026 | Mar 12, 2026 |
| 6-K | Current report (foreign issuer) | Mar 23, 2026 | Mar 23, 2026 |
| 6-K | Current report (foreign issuer) | Mar 17, 2026 | Mar 17, 2026 |
| 6-K | Current report (foreign issuer) | Mar 17, 2026 | Mar 17, 2026 |
| 6-K | Current report (foreign issuer) | Mar 2, 2026 | Mar 2, 2026 |
| 6-K | Current report (foreign issuer) | Feb 27, 2026 | Feb 27, 2026 |
| 6-K | Current report (foreign issuer) | Feb 27, 2026 | Feb 27, 2026 |
| 6-K | Current report (foreign issuer) | Feb 27, 2026 | Feb 27, 2026 |
| 6-K | Current report (foreign issuer) | Feb 27, 2026 | Dec 31, 2025 |
| 40-F | Annual report (Canadian issuer) | Feb 27, 2026 | Dec 31, 2025 |
| 6-K | Current report (foreign issuer) | Jan 28, 2026 | Jan 27, 2026 |
| 6-K | Current report (foreign issuer) | Dec 22, 2025 | Dec 22, 2025 |
| 6-K | Current report (foreign issuer) | Dec 18, 2025 | Dec 18, 2025 |
| 6-K | Current report (foreign issuer) | Dec 17, 2025 | Dec 17, 2025 |
| 6-K | Current report (foreign issuer) | Dec 15, 2025 | Dec 15, 2025 |
| 6-K | Current report (foreign issuer) | Dec 15, 2025 | Dec 12, 2025 |
| 6-K | Current report (foreign issuer) | Dec 15, 2025 | Dec 11, 2025 |
| SUPPL | Filing | Dec 12, 2025 | — |
| FWP | Free writing prospectus | Dec 12, 2025 | — |
| SUPPL | Filing | Dec 11, 2025 | — |
| 6-K | Current report (foreign issuer) | Dec 9, 2025 | Dec 9, 2025 |
| F-X | Filing | Dec 9, 2025 | — |
| F-10EF | Filing | Dec 9, 2025 | — |
| 6-K | Current report (foreign issuer) | Nov 17, 2025 | Nov 17, 2025 |
| 6-K | Current report (foreign issuer) | Nov 6, 2025 | Nov 6, 2025 |
| 6-K | Current report (foreign issuer) | Nov 6, 2025 | Sep 30, 2025 |
| 6-K | Current report (foreign issuer) | Nov 6, 2025 | Nov 6, 2025 |
| 6-K | Current report (foreign issuer) | Oct 22, 2025 | Oct 22, 2025 |
| 6-K | Current report (foreign issuer) | Oct 8, 2025 | Oct 8, 2025 |
| 6-K | Current report (foreign issuer) | Sep 18, 2025 | Sep 18, 2025 |
| 6-K | Current report (foreign issuer) | Aug 1, 2025 | Aug 1, 2025 |
| 6-K | Current report (foreign issuer) | Aug 1, 2025 | Jun 30, 2025 |
| 6-K | Current report (foreign issuer) | Jul 30, 2025 | Jul 29, 2025 |
| 6-K | Current report (foreign issuer) | Jul 3, 2025 | Jul 3, 2025 |
| 6-K | Current report (foreign issuer) | May 28, 2025 | May 27, 2025 |
| 6-K | Current report (foreign issuer) | May 7, 2025 | May 7, 2025 |
| 6-K | Current report (foreign issuer) | May 7, 2025 | Mar 31, 2025 |
| 6-K | Current report (foreign issuer) | Apr 24, 2025 | Apr 24, 2025 |
| 6-K | Current report (foreign issuer) | Apr 24, 2025 | Apr 24, 2025 |
| 6-K | Current report (foreign issuer) | Apr 23, 2025 | Apr 23, 2025 |
| 6-K | Current report (foreign issuer) | Apr 10, 2025 | Apr 8, 2025 |
| 6-K | Current report (foreign issuer) | Mar 31, 2025 | Mar 28, 2025 |
| 6-K | Current report (foreign issuer) | Mar 26, 2025 | Mar 26, 2025 |
| 6-K | Current report (foreign issuer) | Mar 25, 2025 | Mar 7, 2025 |
| 6-K | Current report (foreign issuer) | Feb 20, 2025 | Feb 20, 2025 |
| 6-K | Current report (foreign issuer) | Feb 20, 2025 | Dec 31, 2024 |
| 40-F | Annual report (Canadian issuer) | Feb 20, 2025 | Dec 31, 2024 |
| 6-K | Current report (foreign issuer) | Jan 16, 2025 | Jan 16, 2025 |
| 6-K | Current report (foreign issuer) | Dec 10, 2024 | Dec 9, 2024 |
| 6-K | Current report (foreign issuer) | Dec 4, 2024 | Dec 4, 2024 |
| 6-K | Current report (foreign issuer) | Nov 14, 2024 | Nov 14, 2024 |
| 6-K | Current report (foreign issuer) | Nov 5, 2024 | Nov 5, 2024 |
| 6-K | Current report (foreign issuer) | Nov 5, 2024 | Sep 30, 2024 |
| 6-K | Current report (foreign issuer) | Oct 23, 2024 | Oct 23, 2024 |
| 6-K | Current report (foreign issuer) | Oct 4, 2024 | Oct 4, 2024 |
| 6-K | Current report (foreign issuer) | Sep 17, 2024 | Sep 17, 2024 |
| 6-K | Current report (foreign issuer) | Sep 3, 2024 | Sep 3, 2024 |
| 6-K | Current report (foreign issuer) | Aug 22, 2024 | Aug 22, 2024 |
| 6-K | Current report (foreign issuer) | Aug 1, 2024 | Aug 1, 2024 |
| 6-K | Current report (foreign issuer) | Aug 1, 2024 | Jun 30, 2024 |
| 6-K | Current report (foreign issuer) | Jul 30, 2024 | Jul 29, 2024 |
| 6-K | Current report (foreign issuer) | Jul 5, 2024 | Jul 4, 2024 |
| 6-K | Current report (foreign issuer) | Jun 25, 2024 | Jun 24, 2024 |
| 6-K | Current report (foreign issuer) | May 28, 2024 | May 27, 2024 |
| 6-K | Current report (foreign issuer) | May 21, 2024 | May 21, 2024 |
| 6-K | Current report (foreign issuer) | May 3, 2024 | May 3, 2024 |
| 6-K | Current report (foreign issuer) | May 3, 2024 | Mar 31, 2024 |
| 6-K | Current report (foreign issuer) | Apr 26, 2024 | Apr 30, 2024 |
| 6-K | Current report (foreign issuer) | Apr 25, 2024 | Apr 25, 2024 |
| 6-K | Current report (foreign issuer) | Apr 25, 2024 | Apr 24, 2024 |
| 6-K | Current report (foreign issuer) | Apr 24, 2024 | Apr 24, 2024 |
| 6-K | Current report (foreign issuer) | Apr 19, 2024 | Apr 19, 2024 |
| 6-K | Current report (foreign issuer) | Apr 5, 2024 | Mar 28, 2024 |
| 6-K | Current report (foreign issuer) | Mar 22, 2024 | Mar 22, 2024 |
| 6-K | Current report (foreign issuer) | Mar 20, 2024 | Mar 15, 2024 |
| 6-K | Current report (foreign issuer) | Feb 23, 2024 | Feb 23, 2024 |
| 6-K | Current report (foreign issuer) | Feb 23, 2024 | Dec 31, 2023 |
| 40-F | Annual report (Canadian issuer) | Feb 23, 2024 | Dec 31, 2023 |
| 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 19, 2023 | Dec 19, 2023 |
| 6-K | Current report (foreign issuer) | Dec 13, 2023 | Dec 11, 2023 |
| 6-K | Current report (foreign issuer) | Nov 24, 2023 | Nov 22, 2023 |
| 6-K | Current report (foreign issuer) | Nov 24, 2023 | Nov 21, 2023 |
| 6-K | Current report (foreign issuer) | Nov 7, 2023 | Nov 7, 2023 |
| 6-K | Current report (foreign issuer) | Nov 7, 2023 | Sep 30, 2023 |
| 6-K | Current report (foreign issuer) | Nov 2, 2023 | Nov 2, 2023 |
| 6-K | Current report (foreign issuer) | Nov 2, 2023 | Oct 30, 2023 |
| 6-K | Current report (foreign issuer) | Oct 26, 2023 | Oct 19, 2023 |
| 6-K | Current report (foreign issuer) | Oct 13, 2023 | Oct 11, 2023 |
| 6-K | Current report (foreign issuer) | Oct 12, 2023 | Oct 11, 2023 |
| 6-K | Current report (foreign issuer) | Oct 5, 2023 | Oct 5, 2023 |
| 6-K | Current report (foreign issuer) | Sep 14, 2023 | Sep 14, 2023 |
| 6-K | Current report (foreign issuer) | Aug 8, 2023 | Aug 4, 2023 |
| 6-K | Current report (foreign issuer) | Aug 4, 2023 | Jun 30, 2023 |
| 6-K | Current report (foreign issuer) | Jul 27, 2023 | Jul 27, 2023 |
| 6-K | Current report (foreign issuer) | Jul 18, 2023 | Jul 17, 2023 |
| 6-K | Current report (foreign issuer) | Jul 11, 2023 | Jul 11, 2023 |
| 6-K | Current report (foreign issuer) | Jul 5, 2023 | Jul 5, 2023 |
| 6-K | Current report (foreign issuer) | May 26, 2023 | May 26, 2023 |
| EFFECT | Filing | May 18, 2023 | — |
| F-X | Filing | May 16, 2023 | — |
| F-10 | Filing | May 16, 2023 | — |
| 6-K | Current report (foreign issuer) | May 11, 2023 | May 11, 2023 |
| 6-K | Current report (foreign issuer) | May 5, 2023 | May 5, 2023 |
| 6-K | Current report (foreign issuer) | May 5, 2023 | Mar 31, 2023 |
| 6-K | Current report (foreign issuer) | May 1, 2023 | Apr 28, 2023 |
| 6-K | Current report (foreign issuer) | May 1, 2023 | Apr 28, 2023 |
| 6-K | Current report (foreign issuer) | Apr 28, 2023 | Apr 27, 2023 |
| 6-K | Current report (foreign issuer) | Apr 12, 2023 | Apr 11, 2023 |
| 6-K | Current report (foreign issuer) | Mar 28, 2023 | Mar 27, 2023 |
| 6-K | Current report (foreign issuer) | Mar 24, 2023 | Mar 23, 2023 |
| 6-K/A | Filing | Mar 10, 2023 | Dec 31, 2022 |
| 6-K/A | Filing | Feb 24, 2023 | Dec 31, 2022 |
| 6-K | Current report (foreign issuer) | Feb 23, 2023 | Feb 23, 2023 |
| 6-K | Current report (foreign issuer) | Feb 23, 2023 | Dec 31, 2022 |
| 40-F | Annual report (Canadian issuer) | Feb 23, 2023 | Dec 31, 2022 |
| 6-K | Current report (foreign issuer) | Feb 17, 2023 | Feb 16, 2023 |
| 6-K | Current report (foreign issuer) | Jan 24, 2023 | Jan 23, 2023 |
| 6-K | Current report (foreign issuer) | Jan 24, 2023 | Jan 23, 2023 |
| 6-K | Current report (foreign issuer) | Dec 15, 2022 | Dec 15, 2022 |
| 6-K | Current report (foreign issuer) | Dec 13, 2022 | Dec 12, 2022 |
| 6-K | Current report (foreign issuer) | Nov 18, 2022 | Nov 17, 2022 |
| 6-K | Current report (foreign issuer) | Nov 16, 2022 | Nov 15, 2022 |
| SUPPL | Filing | Nov 16, 2022 | — |
| 6-K | Current report (foreign issuer) | Nov 15, 2022 | Nov 14, 2022 |
| FWP | Free writing prospectus | Nov 14, 2022 | — |
| SUPPL | Filing | Nov 14, 2022 | — |
| 6-K | Current report (foreign issuer) | Nov 14, 2022 | Nov 14, 2022 |
| 6-K | Current report (foreign issuer) | Nov 8, 2022 | Nov 8, 2022 |
| 6-K | Current report (foreign issuer) | Nov 8, 2022 | Nov 8, 2022 |
| 6-K | Current report (foreign issuer) | Nov 8, 2022 | Sep 30, 2022 |
| 6-K | Current report (foreign issuer) | Oct 12, 2022 | Oct 11, 2022 |
| 6-K | Current report (foreign issuer) | Sep 21, 2022 | Sep 21, 2022 |
| 6-K | Current report (foreign issuer) | Sep 2, 2022 | Aug 31, 2022 |
| 6-K | Current report (foreign issuer) | Aug 5, 2022 | Aug 5, 2022 |
| 6-K | Current report (foreign issuer) | Aug 5, 2022 | Jun 30, 2022 |
| 6-K | Current report (foreign issuer) | Jul 28, 2022 | Jul 27, 2022 |
| 6-K | Current report (foreign issuer) | Jul 12, 2022 | Jul 12, 2022 |
| 6-K | Current report (foreign issuer) | Jul 12, 2022 | Jul 6, 2022 |
| 6-K | Current report (foreign issuer) | Jun 21, 2022 | Jun 20, 2022 |
| 6-K | Current report (foreign issuer) | Jun 17, 2022 | Jun 16, 2022 |
| 6-K | Current report (foreign issuer) | Jun 10, 2022 | Jun 9, 2022 |
| 6-K | Current report (foreign issuer) | May 31, 2022 | May 31, 2022 |
| 6-K | Current report (foreign issuer) | May 24, 2022 | May 24, 2022 |
| 6-K | Current report (foreign issuer) | May 6, 2022 | May 6, 2022 |
| 6-K | Current report (foreign issuer) | May 6, 2022 | Mar 31, 2022 |
| 6-K | Current report (foreign issuer) | May 2, 2022 | Apr 29, 2022 |
| 6-K | Current report (foreign issuer) | May 2, 2022 | Apr 29, 2022 |
| 6-K | Current report (foreign issuer) | Apr 29, 2022 | Apr 28, 2022 |
| 6-K | Current report (foreign issuer) | Apr 28, 2022 | Apr 27, 2022 |
| 6-K | Current report (foreign issuer) | Apr 15, 2022 | Apr 12, 2022 |
| 6-K | Current report (foreign issuer) | Apr 5, 2022 | Apr 5, 2022 |
| 6-K | Current report (foreign issuer) | Mar 25, 2022 | Apr 28, 2022 |
| 6-K | Current report (foreign issuer) | Mar 24, 2022 | Mar 23, 2022 |
| 6-K | Current report (foreign issuer) | Mar 8, 2022 | Dec 31, 2021 |
| 6-K | Current report (foreign issuer) | Feb 24, 2022 | Feb 24, 2022 |
| 6-K | Current report (foreign issuer) | Feb 24, 2022 | Dec 31, 2021 |
| 40-F | Annual report (Canadian issuer) | Feb 24, 2022 | Dec 31, 2021 |
| 6-K | Current report (foreign issuer) | Feb 1, 2022 | Feb 1, 2022 |
| 6-K | Current report (foreign issuer) | Jan 24, 2022 | Jan 24, 2022 |
| 6-K | Current report (foreign issuer) | Jan 18, 2022 | Jan 18, 2022 |
| 6-K | Current report (foreign issuer) | Dec 29, 2021 | Dec 29, 2021 |
| 6-K | Current report (foreign issuer) | Dec 22, 2021 | Dec 22, 2021 |
| 6-K | Current report (foreign issuer) | Dec 15, 2021 | Dec 14, 2021 |
| 6-K | Current report (foreign issuer) | Dec 14, 2021 | Dec 13, 2021 |
| S-8 | Employee stock plan registration | Nov 10, 2021 | — |
| 6-K | Current report (foreign issuer) | Nov 9, 2021 | Nov 9, 2021 |
| 6-K | Current report (foreign issuer) | Nov 9, 2021 | Sep 30, 2021 |
| 6-K | Current report (foreign issuer) | Nov 5, 2021 | Nov 5, 2021 |
| 6-K | Current report (foreign issuer) | Nov 2, 2021 | Nov 1, 2021 |
| 6-K | Current report (foreign issuer) | Oct 7, 2021 | Oct 6, 2021 |
| 6-K | Current report (foreign issuer) | Sep 30, 2021 | Sep 28, 2021 |
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
- Electric Services (SIC 4911)
- Listed as
- TAC (NYSE), TACPF (OTC), TRNTF (OTC), TSLTF (OTC)
- Fiscal year ends
- December 31
- Headquarters
- Calgary, Alberta, Canada
- SEC CIK
- 1144800
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.