TransAlta sets Q3 2026 earnings release for November 3

A replay will be accessible online, and a transcript will be posted on TransAlta's website once it becomes available.

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Form Type

6-K

Rhea-AI Filing Summary

TransAlta Corporation (TAC) will release its third-quarter 2026 results before markets open on November 3, 2026. A conference call and webcast to discuss the results will begin that day at 9:00 a.m. Alberta Time (10:00 a.m. Eastern Time). Telephone participants can register for access, and webcast materials will be available through TransAlta’s investor website.

Key Figures

Results release date: November 3, 2026 Conference call start: 9:00 a.m. Alberta Time Conference call start: 10:00 a.m. Eastern Time

3 metrics

Results release date November 3, 2026 Third-quarter 2026 results; before markets open

Conference call start 9:00 a.m. Alberta Time November 3, 2026

Conference call start 10:00 a.m. Eastern Time November 3, 2026

Key Terms

foreign private issuer, Form 40-F, Form 6-K

3 terms

foreign private issuer regulatory

"REPORT OF FOREIGN PRIVATE ISSUER"

A foreign private issuer is a company organized outside the United States that meets tests showing it is primarily foreign-controlled and therefore qualifies for a different set of U.S. reporting rules. For investors, that means the company files less frequent or differently formatted disclosures with U.S. regulators and may follow home-country accounting and governance practices, so buying its stock is like dining at a well-reviewed restaurant that follows its home kitchen’s rules instead of the local menu — you get access but should check what standards apply.

Form 40-F regulatory

"annual reports under cover of Form 20-F or Form 40-F"

A Form 40-F is a standardized annual filing used by certain Canadian companies that trade in U.S. markets to give U.S. regulators and investors the same core financial statements and key disclosures they file in Canada. Think of it as a translated, formally packaged annual report that lets investors in a different marketplace compare a company’s results, governance and risks more easily, which reduces uncertainty and helps investment decisions.

Form 6-K regulatory

"Form 6-K REPORT OF FOREIGN PRIVATE ISSUER"

A Form 6-K is a report that companies listed in certain countries file to provide important updates, such as financial results, corporate changes, or other significant information, to regulators and investors. It functions like an official company update or news release, helping investors stay informed about developments that could affect their investment decisions.

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Available on EDGAR 10/06/2026 - 01:50 PM Accepted by SEC EDGAR 10/06/2026 - 01:49 PM

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of October 2026

Commission File Number: 001-15214

TransAlta Corporation
(Translation of registrant's name into English)

Suite 1400, 1100 – 1st Street S.E., Calgary, Alberta, T2G 1B1
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F [ ] Form 40-F [ X ]

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: October 6, 2026		/s/ Joel Hunter
		Joel Hunter
		Executive Vice President Finance and Chief Financial Officer

EXHIBIT INDEX

Exhibit Number		Description

99.1		TransAlta to Host Third Quarter 2026 Results Conference Call

EXHIBIT 99.1

TransAlta to Host Third Quarter 2026 Results Conference Call

CALGARY, Alberta, Oct. 05, 2026 (GLOBE NEWSWIRE) --

TransAlta Corporation (TransAlta or the Company) (TSX:TA) (NYSE:TAC) will release its third quarter 2026 results before markets open on Tuesday, November 3, 2026. A conference call and webcast to discuss the results will be held for investors, analysts, members of the media and other interested parties the same day beginning at 9:00 a.m. Alberta Time (10:00 a.m. Eastern Time).

Webcast link: https://edge.media-server.com/mmc/p/zj3d6q2q

To access the conference call via telephone, please register ahead of time using the call link: https://register-conf.media-server.com/register/BI172ec525df5e4f8ebadda859e7f69864. Once registered, participants will have the option of 1) dialing into the call from their phone (via a personalized PIN); or 2) clicking the “Call Me” option to receive an automated call directly to their phone.

Related materials will be available on the Investor section of TransAlta’s website at https://transalta.com/investors/presentations-and-events/. If you are unable to participate in the call, the replay will be accessible at https://edge.media-server.com/mmc/p/zj3d6q2q. A transcript of the broadcast will be posted on TransAlta’s website once it becomes available.

About TransAlta Corporation:

TransAlta is one of Canada’s largest publicly traded power generators, delivering reliable electricity across Canada, the United States and Western Australia. For more than 100 years, our people have safely operated and evolved essential energy infrastructure that powers customers and communities. Our technology-diverse portfolio and disciplined execution allow us to deliver dependable power across evolving energy systems. We take a practical, responsible approach to meeting today’s energy needs while building for what comes next.

For more information about TransAlta, visit our website at transalta.com.

For more information:

*Investor Inquiries:*	*Media Inquiries:*
Phone: 1-800-387-3598 in Canada and U.S.	Phone: 1-855-255-9184
Email: investor_relations@transalta.com	Email: ta_media_relations@transalta.com