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.
The TransAlta Corporation (TAC) SEC filings page on Stock Titan provides access to the company’s regulatory disclosures as a foreign private issuer in the United States. TransAlta files under the Securities Exchange Act of 1934 using Form 40-F for annual reporting and furnishes current information on Form 6-K. These filings complement the company’s Canadian disclosures and offer investors a centralized view of material developments.
Recent Form 6-K submissions include items such as dividend declarations, notices related to plant operations, long-term agreements, acquisitions, underwriting agreements and supplemental indentures. Examples include filings describing the planned temporary mothballing of Sheerness Unit 1, a Department of Energy order regarding Centralia Unit 2, a long-term agreement to enable coal-to-gas conversion at Centralia, and a definitive agreement to acquire a 310 megawatt contracted Ontario gas portfolio. Other 6-Ks incorporate by reference documents like management’s discussion and analysis, interim financial statements, consents of auditors and transaction-related agreements.
For a power producer with multiple business segments—Hydro, Wind & Solar, Gas, Energy Transition, Energy Marketing and Corporate—these filings help explain how TransAlta’s portfolio, capital structure and risk profile change over time. Investors can review segment performance, non-IFRS measures, credit facility arrangements and other details through documents referenced in the SEC submissions.
On Stock Titan, SEC filings for TAC are updated as they appear on EDGAR, and AI-powered tools summarize key points to make lengthy documents more accessible. Users can quickly see what each filing covers, whether it relates to financing, asset transactions, operational changes or governance matters, and then drill down into the full text as needed. This page is a resource for anyone analyzing TransAlta’s regulatory history, financial reporting and material corporate events.
Royal Bank of Canada has disclosed a significant ownership stake in TransAlta Corp common stock. The bank reports beneficial ownership of 22,956,719 shares, representing 7.74% of the outstanding common stock. All of these shares are held with shared voting and shared dispositive power, while Royal Bank of Canada has no sole voting or dispositive power.
The filing states that the securities were acquired and are held in the ordinary course of business and are not intended to change or influence control of TransAlta. Several affiliated entities, including RBC Capital Markets, RBC Global Asset Management and others, are identified as the subsidiaries through which these securities are held.
FMR LLC has filed an amended Schedule 13G reporting a significant passive ownership stake in TransAlta Corporation. FMR and related reporting person Abigail P. Johnson beneficially own 23,706,888 shares of TransAlta common stock, representing 8.0% of the class.
FMR holds sole voting power over 23,556,337 shares and sole dispositive power over all 23,706,888 shares, with no shared voting or dispositive power. The filing states the shares are held in the ordinary course of business and not for the purpose of changing or influencing control of TransAlta. One or more other persons may receive dividends or sale proceeds, but no such person holds more than 5% of the outstanding common stock.
TransAlta Corporation has filed a Form 6-K announcing logistics for its upcoming earnings communication. The company will release its fourth quarter and full year 2025 results before markets open on February 27, 2026, followed by a conference call and webcast at 9:00 a.m. Mountain Time (11:00 a.m. ET).
The call will cover both the results and TransAlta’s 2026 annual guidance and is open to investors, analysts, media and other interested parties via online registration and webcast. Replay and transcript access will be provided through the company’s website.
TransAlta Corporation filed a Form 6-K as a foreign private issuer for December 2025. The filing states that Exhibit 99.1, a Second Supplemental Indenture dated December 22, 2025, is incorporated by reference into TransAlta’s existing Form F-10 shelf registration statement.
TransAlta Corporation filed a Form 6-K as a foreign private issuer for December 2025. The report indicates that the company furnished an exhibit titled “TransAlta Provides Notice to Mothball Sheerness Unit 1,” signaling a planned change in the status of that generating unit. The filing was signed by Joel Hunter, Executive Vice President Finance and Chief Financial Officer.
TransAlta Corporation filed a report as a foreign private issuer. The filing references an exhibit describing that the Department of Energy has mandated that Centralia Unit 2 remain available for operation for 90 days. The report is signed on behalf of TransAlta by Joel Hunter, Executive Vice President Finance and Chief Financial Officer.
TransAlta Corporation filed a Form 6-K as a foreign private issuer for December 2025, primarily to submit an Underwriting Agreement dated December 11, 2025 as Exhibit 99.1. This exhibit is incorporated by reference into TransAlta’s Form F-10 registration statement (File No. 333-292019), with the report signed by Corporate Secretary Kelly Galloway.
TransAlta Corporation filed a Form 6-K as a foreign private issuer for December 2025, indicating it files its annual reports on Form 40-F. The report is signed by Executive Vice President Finance and Chief Financial Officer Joel Hunter on December 12, 2025.
The filing includes an exhibit labeled 99.1 titled “TransAlta Declares Dividends.” This indicates the company has declared dividends and is providing the related details in the attached exhibit for investors and regulators.
TransAlta Corporation filed a Form 6-K noting that it has signed a long-term agreement for 700 MW at its Centralia facility. The agreement is described as enabling a coal-to-natural-gas conversion at the site, indicating a move toward lower-emission power generation. The report is signed by the Executive Vice President Finance and Chief Financial Officer, confirming the company’s authorization of this disclosure.