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 |
|---|---|---|---|
| SUPPL | Filing | Jun 5, 2026 | — |
| SUPPL | Filing | Jun 3, 2026 | — |
| SUPPL | Filing | Dec 12, 2025 | — |
| SUPPL | Filing | Dec 11, 2025 | — |
| EFFECT | Filing | May 18, 2023 | — |
| SUPPL | Filing | Nov 16, 2022 | — |
| SUPPL | Filing | Nov 14, 2022 | — |
| EFFECT | Filing | Jun 30, 2021 | — |
| EFFECT | Filing | May 23, 2019 | — |
| 40FR12B/A | Amendment no. 1 | Apr 29, 2019 | — |
| UPLOAD | Letter from the SEC | Oct 4, 2017 | — |
| CORRESP | Letter to the SEC | Sep 21, 2017 | — |
| UPLOAD | Letter from the SEC | Sep 8, 2017 | — |
| UPLOAD | Letter from the SEC | Sep 1, 2016 | — |
| CORRESP | Letter to the SEC | Aug 16, 2016 | — |
| UPLOAD | Letter from the SEC | Aug 3, 2016 | — |
| CORRESP | Letter to the SEC | Jul 26, 2016 | — |
| UPLOAD | Letter from the SEC | Jul 12, 2016 | — |
| EFFECT | Filing | Dec 18, 2014 | — |
| UPLOAD | Letter from the SEC | Jun 18, 2014 | — |
| CORRESP | Letter to the SEC | Jun 17, 2014 | — |
| UPLOAD | Letter from the SEC | Jun 11, 2014 | — |
| SUPPL | Filing | May 30, 2014 | — |
| SUPPL | Filing | May 29, 2014 | — |
| UPLOAD | Letter from the SEC | Aug 28, 2013 | — |
| CORRESP | Letter to the SEC | Aug 13, 2013 | — |
| UPLOAD | Letter from the SEC | Aug 1, 2013 | — |
| EFFECT | Filing | Dec 10, 2012 | — |
| UPLOAD | Letter from the SEC | Nov 5, 2012 | — |
| SUPPL | Filing | Nov 5, 2012 | — |
| SUPPL | Filing | Nov 2, 2012 | — |
| CORRESP | Letter to the SEC | Aug 31, 2012 | — |
| CORRESP | Letter to the SEC | Aug 23, 2012 | — |
| UPLOAD | Letter from the SEC | Aug 10, 2012 | — |
| UPLOAD | Letter from the SEC | Sep 6, 2011 | — |
| CORRESP | Letter to the SEC | Aug 25, 2011 | — |
| CORRESP | Letter to the SEC | Jul 29, 2011 | — |
| UPLOAD | Letter from the SEC | Jul 28, 2011 | — |
| EFFECT | Filing | Nov 19, 2010 | — |
| SUPPL | Supplement | Mar 10, 2010 | — |
| SUPPL | Supplement | Mar 9, 2010 | — |
| SUPPL | Filing | Nov 10, 2009 | — |
| SUPPL | Filing | Nov 9, 2009 | — |
| SUPPL | Filing | Oct 30, 2009 | — |
| EFFECT | Filing | Oct 22, 2009 | — |
| UPLOAD | Letter from the SEC | Sep 18, 2009 | — |
| CORRESP | Letter to the SEC | Sep 16, 2009 | — |
| UPLOAD | Letter from the SEC | Sep 3, 2009 | — |
| CORRESP | Letter to the SEC | Aug 28, 2009 | — |
| UPLOAD | Letter from the SEC | Aug 5, 2009 | — |
| EFFECT | Filing | Nov 18, 2008 | — |
| SUPPL | Filing | May 8, 2008 | — |
| SUPPL | Filing | May 5, 2008 | — |
| UPLOAD | Letter from the SEC | Jul 26, 2007 | — |
| UPLOAD | Letter from the SEC | Jul 26, 2007 | — |
| CORRESP | Letter to the SEC | Jul 23, 2007 | — |
| EFFECT | Filing | Oct 16, 2006 | — |
| UPLOAD | Letter from the SEC | Nov 10, 2005 | — |
| CORRESP | Letter to the SEC | Nov 2, 2005 | — |
| CORRESP | Letter to the SEC | Oct 26, 2005 | — |
| CORRESP | Letter to the SEC | Aug 29, 2005 | — |
| UPLOAD | Letter from the SEC | Jul 27, 2005 | — |
| UPLOAD | Letter from the SEC | Jul 5, 2005 | — |
Showing 63 filings. 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.