Welcome to our dedicated page for TransAlta SEC filings (Ticker: TAC), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
TransAlta Corporation filings document the company’s U.S. disclosure record as a Canadian foreign issuer reporting on Form 6-K and Form 40-F. The filings include management discussion and analysis, IFRS interim financial statements and current reports covering operating results, cash flow, fleet performance, hedging, contracted generation and segment activity across hydro, wind and solar, gas and energy-transition operations.
TransAlta’s regulatory documents also record shareholder meeting materials, proxy circulars, voting results, director elections, auditor appointments, executive compensation votes and share unit plan matters. Other filings cover preferred share dividends, preferred share conversion results, leadership appointments and incorporation of certain exhibits into registration statements.
Bank of Montreal and related BMO entities reported beneficial ownership of 17,758,682 shares of TransAlta Corp common stock, representing 5.98% of the class as of 03/31/2026. The filing breaks ownership across affiliated filers, with Bank of Montreal Holding Inc. shown with 8,814,845 shares (2.97%) and other BMO subsidiaries holding smaller, identified positions.
TransAlta Corp ownership update: FMR LLC reports beneficial ownership of 13,600,626 shares of TransAlta common stock, representing 4.6% of the class. The filing is an Amendment No. 4 to a Schedule 13G/A covering the position reported on the form with CUSIP 89346D107.
The cover shows the reporting period date 03/31/2026. The filing states that one or more other persons are known to have rights to dividends or sale proceeds but no other person holds more than 5% of the class. The signature block shows authorization by FMR LLC and Abigail P. Johnson.
TransAlta Corporation reported softer first-quarter 2026 results but reaffirmed its full-year outlook. Revenue was $565 million, down from $758 million a year earlier, and Adjusted EBITDA declined to $204 million from $270 million as Alberta power prices fell and Centralia stopped producing.
Free cash flow was $102 million ($0.34 per share) versus $139 million ($0.47 per share), while net earnings attributable to common shareholders dropped to $13 million ($0.04 per share) from $46 million ($0.15 per share). Cash flow from operating activities improved sharply to $123 million from $7 million, and available liquidity was $1.5 billion as of March 31, 2026. The company closed the $95 million Far North acquisition adding 310 MW of gas capacity, signed an MOU to be exclusive power provider for a large Alberta data centre project, and increased its annualized common dividend by 8% to $0.28 per share while maintaining 2026 Adjusted EBITDA guidance of $950 million–$1,050 million and FCF of $350 million–$450 million.
TransAlta Corporation reported weaker Q1 2026 results as revenue fell to $565 million from $758 million and Adjusted EBITDA declined to $204 million from $270 million, mainly due to no generation at Centralia Unit 2 and lower Alberta power prices. Net earnings attributable to common shareholders dropped to $13 million from $46 million, while free cash flow decreased to $102 million from $139 million. Liquidity remained strong at $1.5 billion, and 2026 guidance was reaffirmed, with Adjusted EBITDA targeted at $950 million–$1,050 million and free cash flow at $350 million–$450 million. The company closed the $95 million Far North acquisition, increased its annualized common dividend to $0.28 per share, advanced a large data-centre MOU at Keephills, and executed CEO and CFO succession.
TransAlta Corporation reported the results of its 2026 Annual and Special Meeting of Shareholders. Shareholders representing 188,939,751 common shares, or 63.55 per cent of outstanding shares, were present in person or by proxy.
All nine management director nominees were elected, each receiving more than 92 per cent support, with several above 99 per cent. Shareholders approved the appointment of Ernst & Young LLP as auditors for 2026 with 99.19 per cent of votes cast in favour.
The non-binding advisory vote on the Corporation’s approach to executive compensation passed with 96.69 per cent support. Shareholders also approved increasing the number of common shares reserved for issuance under the Share Unit Plan, with 98.53 per cent of votes cast in favour.
TransAlta Corporation reported the results of its Annual and Special Meeting of Shareholders held on April 30, 2026. A total of 188,939,751 common shares, representing 63.55% of outstanding shares, were represented in person or by proxy.
All nine management director nominees were elected, each receiving more than 92% of votes cast, with most above 99% support. Shareholders also approved the appointment of Ernst & Young LLP as auditors for 2026, with 99.19% of votes cast in favour.
The non-binding advisory vote on the company’s approach to executive compensation passed with 96.69% support. Shareholders further approved a resolution to increase the number of common shares reserved for issuance under the Share Unit Plan, with 98.53% of votes cast in favour.
TransAlta Corporation declared quarterly dividends on several series of its Cumulative Redeemable Rate Reset First Preferred Shares for the period from March 31, 2026 up to but excluding June 30, 2026. The dividends are payable on June 30, 2026 to shareholders of record on June 1, 2026.
Declared quarterly dividends include Series A at a 4.782% rate, or $0.29888 per share, Series B at 4.221% or $0.26309 per share, Series C at 5.854% or $0.36588 per share, Series D at 5.291% or $0.32978 per share, Series E at 6.894% or $0.43088 per share, and Series G at 6.773% or $0.42331 per share. All amounts are in Canadian dollars, and the Series B and Series D dividends are based on floating rates that reset every quarter.
TransAlta Corporation is reshaping its senior leadership team. The company appointed Mike Politeski as Executive Vice President, Finance and Chief Financial Officer, effective May 1, 2026, and Grant Arnold as Executive Vice President, Growth and Chief Commercial Officer, effective May 6, 2026.
These appointments align with current CFO Joel Hunter becoming President and CEO on April 30, 2026, following the retirement of President and CEO John Kousinioris. Politeski brings over 25 years of finance and capital markets experience, while Arnold adds more than 30 years in power generation and energy, including leadership in renewables growth. TransAlta highlights this refreshed team as central to executing its strategy of disciplined growth, commercial development and operational excellence across its long-standing power generation business.
TransAlta Corporation will hold its 2026 annual and special meeting of shareholders on April 30, 2026 at 11:30 a.m. Mountain Time in a virtual-only format via live audio webcast. The management proxy circular provides details on meeting business and voting.
TransAlta will release its first quarter 2026 results before markets open on May 6, 2026, followed by a conference call and webcast at 9:00 a.m. Mountain Time for investors, analysts, media and other interested parties.
TransAlta Corporation is convening its 2026 annual and special shareholder meeting on April 30, 2026 at 11:30 a.m. Mountain Time in a virtual-only format. Holders of common shares as of March 12, 2026 can attend online, ask questions and vote.
Shareholders will elect nine directors, consider reappointing Ernst & Young LLP as auditors, vote on a non-binding advisory resolution on executive compensation, and decide on an increase in common shares issuable under the Share Unit Plan. The materials are delivered primarily via electronic Notice-and-Access, with paper copies available on request.
The filing also highlights leadership changes: President and CEO John Kousinioris will retire on April 30, 2026, and current CFO Joel Hunter will become President and CEO and, subject to election, join the Board on that date.