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 filed a Form 6-K as a foreign private issuer that files annual reports under Form 40-F. The report, signed by Executive Vice President Finance and Chief Financial Officer Joel Hunter on September 18, 2025, includes Exhibit 99.1 titled “TransAlta to Host 2025 Investor Day.”
The Goldman Sachs Group, Inc. and Goldman Sachs & Co. LLC filed a Schedule 13G reporting beneficial ownership of 16,350,772.73 shares of TransAlta Corporation common stock, representing 5.5% of the class as of the 06/30/2025 event date.
The filing reports 0 sole voting and dispositive power and 16,350,772.73 shares of shared voting and shared dispositive power. The submission includes a joint filing agreement (Exhibit 99.1) and identifies Goldman Sachs & Co. LLC as a subsidiary that may be deemed to beneficially own the securities (Exhibit 99.2). The signatory certified the holdings are held in the ordinary course and not to influence control; signatures dated 07/17/2025.