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.
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 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 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.
TransAlta Corporation filed a Form 6-K for November 2025, signed by its Executive Vice President Finance and Chief Financial Officer, Joel Hunter. The report includes an exhibit titled "TransAlta to Acquire 310 MW Contracted Ontario Gas Portfolio for $95 million," indicating a planned acquisition of a sizable, contracted natural gas power portfolio in Ontario. This suggests an expansion of TransAlta's generation assets through a contracted capacity addition of 310 megawatts.
TransAlta Corporation (TAC) received an amended Schedule 13G (Amendment No. 2) from Millennium Management affiliates and Integrated Core Strategies (Asia) Pte. Ltd., reporting passive beneficial ownership as of 09/30/2025.
Millennium Management LLC, Millennium Group Management LLC, and Israel A. Englander each report beneficial ownership of 13,115,689 common shares, representing 4.4% of the class, with shared voting and dispositive power. Integrated Core Strategies (Asia) Pte. Ltd. reports 11,672,205 common shares, representing 3.9% of the class, also with shared voting and dispositive power.
The filing includes the standard passive investor certification stating the shares were not acquired to change or influence control.
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