TAC - CIK 0001144800
TRANSALTA CORP has filed 1,053 documents with the SEC between 2001 and 2026. The most frequent type is 6-k (803 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| 6-K | - | 2026-05-06 | 2026-05-06 |
| 6-K | - | 2026-05-06 | 2026-03-31 |
| SCHEDULE 13G/A | - | 2026-05-06 | - |
| 6-K | - | 2026-05-01 | 2026-04-30 |
| 6-K | - | 2026-05-01 | 2026-04-30 |
| 6-K | - | 2026-04-30 | 2026-04-29 |
| 6-K | - | 2026-04-20 | 2026-04-20 |
| 6-K | - | 2026-04-07 | 2026-04-07 |
| 6-K | - | 2026-03-31 | 2026-03-12 |
| 6-K | - | 2026-03-23 | 2026-03-23 |
| 6-K | - | 2026-03-17 | 2026-03-17 |
| 6-K | - | 2026-03-17 | 2026-03-17 |
| 6-K | - | 2026-03-02 | 2026-03-02 |
| 6-K | - | 2026-02-27 | 2026-02-27 |
| 6-K | - | 2026-02-27 | 2026-02-27 |
| 6-K | - | 2026-02-27 | 2026-02-27 |
| 6-K | - | 2026-02-27 | 2025-12-31 |
| 40-F | - | 2026-02-27 | 2025-12-31 |
| SCHEDULE 13G/A | - | 2026-02-05 | - |
| 6-K | - | 2026-01-28 | 2026-01-27 |
| 6-K | - | 2025-12-22 | 2025-12-22 |
| 6-K | - | 2025-12-18 | 2025-12-18 |
| 6-K | - | 2025-12-17 | 2025-12-17 |
| 6-K | - | 2025-12-15 | 2025-12-15 |
| 6-K | - | 2025-12-15 | 2025-12-11 |
| 6-K | - | 2025-12-15 | 2025-12-12 |
| SUPPL | - | 2025-12-12 | - |
| Free writing prospectus | FWP | 2025-12-12 | - |
| SUPPL | - | 2025-12-11 | - |
| F-X | - | 2025-12-09 | - |
| F-10EF | - | 2025-12-09 | - |
| 6-K | - | 2025-12-09 | 2025-12-09 |
| 6-K | - | 2025-11-17 | 2025-11-17 |
| SCHEDULE 13G/A | - | 2025-11-14 | - |
| SCHEDULE 13G/A | - | 2025-11-07 | - |
| 6-K | - | 2025-11-06 | 2025-11-06 |
| 6-K | - | 2025-11-06 | 2025-09-30 |
| 6-K | - | 2025-11-06 | 2025-11-06 |
| SCHEDULE 13G/A | - | 2025-11-05 | - |
| 6-K | - | 2025-10-22 | 2025-10-22 |
| 6-K | - | 2025-10-08 | 2025-10-08 |
| 6-K | - | 2025-09-18 | 2025-09-18 |
| SCHEDULE 13G | - | 2025-08-06 | - |
| 6-K | - | 2025-08-01 | 2025-08-01 |
| 6-K | - | 2025-08-01 | 2025-06-30 |
| 6-K | - | 2025-07-30 | 2025-07-29 |
| SCHEDULE 13G | - | 2025-07-09 | - |
| 6-K | - | 2025-07-03 | 2025-07-03 |
| 6-K | - | 2025-05-28 | 2025-05-27 |
| 6-K | - | 2025-05-07 | 2025-05-07 |