Company: TSLTF
Filing Date: 2025-02-20
Form Type: 40-F
Source: 0001144800-25-000006
Chunk: 11

Company: TRANSALTA CORP
Filing Date: 2025-02-20
Form: 40-F
Chunk 11
---
 | Certification of President and Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002             |
| 99.9 |     | Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002                           |
| 101  |     | Interactive Data File (formatted as Inline XBRL)                                                                             |
| 104  |     | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)                                     |

<div align='center'>12</div>

### SIGNATURES
Pursuant to the requirements of the Exchange Act, the Registrant certifies that it meets all of the requirements for filing on Form 40-F and has duly caused this annual report to be signed on its behalf by the undersigned, thereto duly authorized, in the City of Calgary, Province of Alberta, Canada.

|                          |     | TRANSALTA CORPORATION                                         |
|                          |     | /s/ Joel Hunter                                               |
|                          |     | Joel Hunter                                                   |
|                          |     | Executive Vice President, Finance and Chief Financial Officer |
| Dated: February 19, 2025 |     |                                                               |

<div align='center'>13</div>