TAC TransAlta Corporation

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 July, 2023
Commission File Number 001-15214

TRANSALTA CORPORATION
(Translation of registrant's name into English)

110-12th Avenue S.W., Box 1900, Station “M”, Calgary, Alberta, Canada, T2P 2M1
(Address of principal executive offices)

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 þ

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

Date: July 27, 2023

EXHIBIT INDEX

 Exhibit 99.1

TransAlta Declares Dividends

CALGARY, AB, July 27, 2023 /CNW/ - The Board of Directors of TransAlta Corporation (TSX: TA) (NYSE: TAC) declared a quarterly dividend of $0.055 per common share payable on October 1, 2023 to shareholders of record at the close of business on September 1, 2023.

The Board of Directors also declared the following quarterly dividend on its Cumulative Redeemable Rate Reset First Preferred Shares for the period starting from and including June 30, 2023 up to but excluding September 30, 2023:

*Please note the quarterly floating rate on the Series B and Series D Preferred Shares will be reset every quarter.

All currency is expressed in Canadian dollars except where noted. When the dividend payment date falls on a weekend or holiday, the payment is made the following business day.

About TransAlta Corporation:

TransAlta owns, operates and develops a diverse fleet of electrical power generation assets in Canada, the United States and Australia with a focus on long-term shareholder value. TransAlta provides municipalities, medium and large industries, businesses and utility customers with clean, affordable, energy efficient and reliable power. Today, TransAlta is one of Canada's largest producers of wind power and Alberta's largest producer of hydro-electric power. For over 111 years, TransAlta has been a responsible operator and a proud member of the communities where we operate and where our employees work and live. TransAlta aligns its corporate goals with the UN Sustainable Development Goals and its climate change strategy with CDP (formerly Climate Disclosure Project) and the Task Force on Climate-related Financial Disclosures (TCFD) recommendations. TransAlta has achieved a 68 per cent reduction in GHG emissions or 22 million tonnes since 2015 and has received scores of A- from CDP and A from MSCI.

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

View original content:https://www.prnewswire.com/news-releases/transalta-declares-dividends-301887703.html

SOURCE TransAlta Corporation

View original content: http://www.newswire.ca/en/releases/archive/July2023/27/c6535.html

%CIK: 0001144800

For further information: Investor Inquiries: Phone: 1-800-387-3598 in Canada and U.S., Email: investor_relations@transalta.com; Media Inquiries: Toll-free media number: 1-855-255-9184, Email: ta_media_relations@transalta.com

CO: TransAlta Corporation

CNW 16:05e 27-JUL-23

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