SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of
the Securities Exchange Act of 1934
For the month of November 2026
Commission File No. 1-8887
TransCanada PipeLines Limited
(Translation of Registrants’ Names into English)
450 - 1 Street S.W., Calgary, Alberta, T2P 5H1, Canada
(Address of Principal Executive Offices)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:
Form 20-F o Form 40-F þ
Exhibit 99.1 to this report, furnished on Form 6-K, shall be incorporated by reference into the following Registration Statements under the Securities Act of 1933, as amended, of the registrant: Form F-10 (File No. 333-283633).
EXHIBIT INDEX
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
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| Date: November 5, 2026 | TRANSCANADA PIPELINES LIMITED |
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| By: | /s/ Sean P. O'Donnell |
| | Sean P. O'Donnell |
| | Executive Vice-President, Strategy and Corporate Development and Chief Financial Officer |
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| By: | /s/ Yvonne Frame-Zawalykut |
| | Yvonne Frame-Zawalykut |
| | Vice-President and Controller |