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.
Hydro turbines in Alberta, wind farms in Washington, and gas peakers in Western Australia—TransAlta’s diversified fleet adds layers of complexity to every disclosure. Tracking environmental liabilities, capacity contracts, and fuel-hedge positions across six business segments can turn a 40-F into a week-long project. If you have ever searched for “TransAlta insider trading Form 4 transactions” only to wade through pages of footnotes, you know the challenge.
Stock Titan solves this problem. Our AI reads each new filing the moment it hits EDGAR, then delivers plain-English answers to questions investors actually ask, such as “TransAlta quarterly earnings report 10-Q filing details” or “TransAlta 8-K material events explained.” One dashboard surfaces every document type—10-K equivalents, 6-K updates, DEF 14A proxy statements, Form 4 insider reports, even credit agreements—so you see the full picture in real time. AI-powered summaries highlight segment revenue shifts, greenhouse-gas disclosures, and asset-retirement obligations, while side-by-side comparisons reveal trends most readers miss.
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- Receive alerts on “TransAlta Form 4 insider transactions real-time” and spot buying or selling by executives.
- Dive into a “TransAlta annual report 10-K simplified” view to track capital spending on renewables vs. gas.
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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.
Goldman Sachs Group Inc. and Goldman Sachs & Co. LLC filed an amended Schedule 13G reporting beneficial ownership in TransAlta Corporation. As of 09/30/2025, they reported 7,054,299.44 common shares, representing 2.4% of the class.
The filing shows 0 shares with sole voting or dispositive power and 7,054,299.44 shares with shared voting and shared dispositive power. The signatories certified the holdings were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.
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