TransAlta Corporation (TSX: TA)
TA trades on the Toronto Stock Exchange in Utilities & Pipelines, headquartered in Alberta. Numbers below come from the TMX issuer list, Yahoo Finance closes and the Bank of Canada rate, each with its source.
Close · October 14, 2026
C$18.06
-3.83% on the day
Market cap (C$)
C$6.4B
TMX list, September 30, 2026
Market cap (US$)
US$4.5B
Mid cap at 1.4263 C$/US$
1-year return
-17.2%
+4.0% year to date
Issuer list, sector and C$ market cap: TMX Group TSX and TSXV listed companies, as of September 30, 2026. US$ figures convert C$ at 1.4263 C$ per US$, the Bank of Canada daily rate for October 14, 2026. Close and returns: Yahoo Finance daily closes for TA.TO, last bar 2026-10-14, computed by Sophia Capital. Website: Wikidata.
Profile
| Field | Value |
|---|---|
| Ticker | TA on the Toronto Stock Exchange |
| Yahoo symbol | TA.TO |
| Sector | Utilities & Pipelines |
| Headquarters | Alberta |
| Listed | 1992-12-31 |
| Listing type | TMX leaves listing type blank for long-listed issuers |
| Shares outstanding | 354,625,170 |
| Also listed on | NYSE |
| Index membership | S&P/TSX Composite |
| SEC CIK | 0001144800 |
| Website | www.transalta.com |
| US listing | TAC |
Returns
| Window | Return |
|---|---|
| 1 day | -3.8% |
| 1 week | -3.1% |
| 1 month | +10.2% |
| 3 months | -7.8% |
| 6 months | -2.4% |
| Year to date | +4.0% |
| 1 year | -17.2% |
| From 52-week high | -27.1% |
| 52-week range | C$16.02 to C$24.79 |
Links
SEDAR+ is linked for searching only; nothing on this page is taken from it.
Recent Canadian filings by type
123 documents in 12 types. Each title links to the document at its source.
Annual financial statements (2)
| Document | Type | Filed |
|---|---|---|
| Consolidated Audited Annual Financial Statements for the year ended Dec. 31, 2025 Period 2025-12-31 | Annual financial statements (40-F) | 2026-02-27 |
| Consolidated Audited Annual Financial Statements for the year ended Dec. 31, 2024 Period 2024-12-31 | Annual financial statements (40-F) | 2025-02-20 |
Interim financial statements (6)
| Document | Type | Filed |
|---|---|---|
| Consolidated comparative interim unaudited financial statements of the registrant as at and for the period ended June 30, 2026 Period 2026-06-30 | Interim financial statements (6-K) | 2026-07-31 |
| Consolidated comparative interim unaudited financial statements of the registrant as at and for the period ended March 31, 2026 Period 2026-03-31 | Interim financial statements (6-K) | 2026-05-06 |
| Consolidated comparative interim unaudited financial statements of the registrant as at and for the period ended Sept. 30, 2025. | Interim financial statements (6-K) | 2025-11-06 |
| Consolidated comparative interim unaudited financial statements of the registrant as at and for the period ended June 30, 2025. Period 2025-06-30 | Interim financial statements (6-K) | 2025-08-01 |
MD&A (8)
| Document | Type | Filed |
|---|---|---|
| Management's Discussion and Analysis for the year ended Dec. 31, 2025 Period 2025-12-31 | MD&A (annual) (40-F) | 2026-02-27 |
| Management's Discussion and Analysis for the year ended Dec. 31, 2024 Period 2024-12-31 | MD&A (annual) (40-F) | 2025-02-20 |
| Management’s Discussion and Analysis of Financial Condition and Results of Operations of the registrant as at and for the period ended June 30, 2026 Period 2026-06-30 | MD&A (interim) (6-K) | 2026-07-31 |
| Management’s Discussion and Analysis of Financial Condition and Results of Operations of the registrant as at and for the period ended March 31, 2026 Period 2026-03-31 | MD&A (interim) (6-K) | 2026-05-06 |
Annual information form (2)
| Document | Type | Filed |
|---|---|---|
| TransAlta Corporation Annual Information Form for the year ended Dec. 31, 2025 Period 2025-12-31 | Annual information form (40-F) | 2026-02-27 |
| TransAlta Corporation Annual Information Form for the year ended Dec. 31, 2024 Period 2024-12-31 | Annual information form (40-F) | 2025-02-20 |
News release (49)
| Document | Type | Filed |
|---|---|---|
| PRESS RELEASE | News release (6-K) | 2026-10-06 |
| PRESS RELEASE | News release (6-K) | 2026-09-14 |
| TransAlta Reports Second Quarter 2026 Results | News release (6-K) | 2026-07-31 |
| PRESS RELEASE | News release (6-K) | 2026-07-29 |
Management information circular / proxy (6)
| Document | Type | Filed |
|---|---|---|
| TransAlta Corporation’s Management Proxy Circular dated March 12, 2026. | Management information circular (6-K) | 2026-03-31 |
| TransAlta Corporation’s Management Proxy Circular dated March 7, 2025. | Management information circular (6-K) | 2025-03-25 |
| TransAlta Corporation’s Notice of Annual and Special Meeting of Shareholders dated March 12, 2026, advising that TransAlta Corporation’s Annual… | Notice of meeting (6-K) | 2026-03-31 |
| TransAlta Corporation’s Notice of Annual and Special Meeting of Shareholders dated March 7, 2025, advising that TransAlta Corporation’s Annual… | Notice of meeting (6-K) | 2025-03-25 |
Report of voting results (2)
| Document | Type | Filed |
|---|---|---|
| Report of Voting Results for TransAlta Corporation Annual and Special Meeting of Shareholders held April 30, 2026 | Report of voting results (6-K) | 2026-05-01 |
| Report of Voting Results for TransAlta Corporation Annual Meeting of Shareholders held April 24, 2025 | Report of voting results (6-K) | 2025-04-24 |
Prospectus (4)
| Document | Type | Filed |
|---|---|---|
| SUPPL | Prospectus supplement (SUPPL) | 2026-06-05 |
| SUPPL | Prospectus supplement (SUPPL) | 2026-06-03 |
| SUPPL | Prospectus supplement (SUPPL) | 2025-12-12 |
| SUPPL | Prospectus supplement (SUPPL) | 2025-12-11 |
Annual report (2)
| Document | Type | Filed |
|---|---|---|
| 40-F Period 2025-12-31 | Annual report (40-F) (40-F) | 2026-02-27 |
| 40-F Period 2024-12-31 | Annual report (40-F) (40-F) | 2025-02-20 |
Early warning / ownership (17)
| Document | Type | Filed |
|---|---|---|
| Schedule 13D amendment | Schedule 13D (SCHEDULE 13D/A) | 2025-01-08 |
| Schedule 13G | Schedule 13G (SCHEDULE 13G) | 2026-05-13 |
| Schedule 13G amendment | Schedule 13G (SCHEDULE 13G/A) | 2026-05-06 |
| Schedule 13G amendment | Schedule 13G (SCHEDULE 13G/A) | 2026-02-13 |
Certification (8)
| Document | Type | Filed |
|---|---|---|
| Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 Period 2025-12-31 | Certification (SOX 302/906) (40-F) | 2026-02-27 |
| Certification of President and Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 Period 2025-12-31 | Certification (SOX 302/906) (40-F) | 2026-02-27 |
| Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 Period 2025-12-31 | Certification (SOX 302/906) (40-F) | 2026-02-27 |
| Certification of President and Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 Period 2025-12-31 | Certification (SOX 302/906) (40-F) | 2026-02-27 |
Other (17)
| Document | Type | Filed |
|---|---|---|
| Investor Presentation, dated June 3, 2026 | Investor presentation (6-K) | 2026-06-05 |
| Consent of Blake, Cassels & Graydon LLP | Consent (6-K) | 2026-06-05 |
| Consent of Osler, Hoskin & Harcourt LLP | Consent (6-K) | 2026-06-05 |
| Consent of Independent Registered Public Accounting Firm Period 2025-12-31 | Consent (40-F) | 2026-02-27 |
Sources: SEC EDGAR filings (public records). Documents filed only on SEDAR+ are not copied here; search SEDAR+ for the full record.
Trading halts
Trading: the last notice, on 2026-06-04, was a resumption.
| Notice | Action | Reason | Notice |
|---|---|---|---|
| 2026-06-04 8:00 AM ET | Resumption | No reason stated | CIRO notice |
| 2026-06-03 4:12 PM ET | Halt | Pending News | CIRO notice |
Source: Canadian Investment Regulatory Organization (CIRO), Halts/Resumptions newsroom, notices since 2024-10-15.
Upcoming events
| Date | Time | Event | Webcast | Source |
|---|---|---|---|---|
| 2026-11-03 | before markets open | Q3 2026 earnings release | No webcast link announced | SEC filing |
| 2026-11-03 | 9:00 a.m. Alberta Time | Q3 2026 earnings call | Webcast | SEC filing |
Source: dates read from the company's SEC filings and newswire releases; each row links to the announcement.
Peers in Utilities & Pipelines
| Ticker | Company | Exchange | Market cap (C$) | 1 month | 1 year |
|---|---|---|---|---|---|
| ACO | Atco Ltd. | TSX | C$7.4B | +11.1% | +55.0% |
| SOBO | South Bow Corporation | TSX | C$9.8B | -2.5% | +26.9% |
| CPX | Capital Power Corporation | TSX | C$10.1B | +5.2% | -12.1% |
| CU | Canadian Utilities Limited | TSX | C$11.8B | -0.4% | +27.4% |
| KEY | Keyera Corp. | TSX | C$15.1B | +1.2% | +26.4% |
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