TransAlta Corp
corporate_fare Company Profile
TransAlta Corp (NYSE:TAC) is a publicly traded company in the Energy & Transportation sector. Wiseek has independently scored 21 items for TAC at importance 7 or higher on its 1–10 market-impact scale. Its most recent item scored 7 or higher is dated 2026-07-31, rated 7/10. Across its 20 most recent items scored 7 or higher, the top rating is 9/10, with 12 rated 8 or above. Recent SEC coverage for TAC spans 6-K, FWP.
Recent high-impact activity:
- TransAlta Q2 Earnings Dip on Lower Alberta Prices, but 2026 Guidance Reaffirmed
- TransAlta Q2 earnings dip but guidance reaffirmed; Centralia mandate extended
- DOE Mandates Centralia Unit 2 Remain Operational for 90 Days
- TransAlta Finalizes C$350M Equity Offering at 10.5% Premium to Fund US$1B Acquisition
- TransAlta Acquires $1B Gas Assets, Funds with Premium C$350M Equity Offering
Financial Snapshot
Short Interest & Short Volume
5.22 days to coverFINRA reported short interest of 13,673,000 shares in TAC as of the September 15, 2026 settlement, a 17.8% increase from the prior period — about 5.2 days to cover at its recent average daily volume. On October 2, 2026, 82.5% of TAC volume reported to FINRA trade-reporting facilities was marked short.
Daily short sale volume covers trades reported to FINRA trade-reporting facilities and is not the same as short interest (bi-monthly reported positions). Source: FINRA — FINRA is the owner and source of this short interest and short sale volume data; it may not be redistributed.
Dilution Risk
Low riskFiling-implied dilution signals for TAC, detected from its recent SEC filings · based on capital-structure filings through 2026-06-03.
Major Acquisition Announced · Strategic Asset Addition
⚠ A more recent filing has been published for this ticker since this signal was computed; it may not yet be reflected — see the filings below.
A filing-implied signal, not a realized share count. How Wiseek tracks dilution →
Insider Transactions
TAC files as a Foreign Private Issuer (FPI). Under SEC Exchange Act Section 16(a), officers, directors, and 10% owners of FPIs are exempt from Form 4 insider-transaction reporting requirements. Comparable disclosures, when applicable, appear in the company's Form 20-F (annual) or Form 6-K (interim) filings on SEC EDGAR.