TransAlta Files 6-K, Submits Form 40-F
Ticker: TRNTF · Form: 6-K · Filed: Dec 18, 2025 · CIK: 1144800
| Field | Detail |
|---|---|
| Company | Transalta Corp (TRNTF) |
| Form Type | 6-K |
| Filed Date | Dec 18, 2025 |
| Risk Level | low |
| Pages | 1 |
| Reading Time | 1 min |
| Sentiment | neutral |
Sentiment: neutral
Topics: reporting, annual-report, compliance
TL;DR
TransAlta filed a 6-K on 12/18/25, confirming they'll use Form 40-F for their annual report.
AI Summary
TransAlta Corporation filed a Form 6-K on December 18, 2025, indicating it is submitting its annual report under cover of Form 40-F. The filing provides information for the month of December 2025 and includes the company's principal executive office address in Calgary, Alberta.
Why It Matters
This filing signals TransAlta's compliance with reporting requirements for foreign private issuers, specifically its intention to file its annual report using Form 40-F.
Risk Assessment
Risk Level: low — This is a routine administrative filing related to annual reporting requirements and does not appear to contain new material financial or operational information.
Key Players & Entities
- TransAlta Corporation (company) — Filer of the 6-K report
- December 2025 (date) — Reporting period for the 6-K
- Form 40-F (document) — Annual report cover type selected by TransAlta
- Calgary, Alberta (location) — Location of TransAlta's principal executive office
FAQ
What is the purpose of this Form 6-K filing by TransAlta Corporation?
The Form 6-K is filed by TransAlta Corporation to report information for the month of December 2025 and to indicate that it is submitting its annual report under cover of Form 40-F.
Which form will TransAlta Corporation use for its annual report?
TransAlta Corporation has indicated it will use Form 40-F for its annual report.
When was this Form 6-K filed?
This Form 6-K was filed as of December 18, 2025.
Where is TransAlta Corporation's principal executive office located?
TransAlta Corporation's principal executive office is located at Suite 1400, 1100 – 1st Street S.E., Calgary, Alberta, T2G 1B1.
Is TransAlta Corporation a foreign private issuer?
Yes, the filing indicates TransAlta Corporation is a foreign private issuer, as it is reporting under Rule 13a-16 or 15d-16 and is choosing to file its annual report under Form 40-F.
Filing Stats: 158 words · 1 min read · ~1 pages · Grade level 12.7 · Accepted 2025-12-18 17:30:38
Filing Documents
- f6k_121825.htm (6-K) — 6KB
- exh_991.htm (EX-99.1) — 6KB
- 0001171843-25-008012.txt ( ) — 13KB
SIGNATURES
SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. TransAlta Corporation (Registrant) Date: December 18, 2025 /s/ Joel Hunter Joel Hunter Executive Vice President Finance and Chief Financial Officer EXHIBIT INDEX Exhibit Number Description 99.1 TransAlta Provides Notice to Mothball Sheerness Unit 1