Company: TCPA
Filing Date: 2025-10-06
Form Type: SUPPL
Source: 0001193125-25-231083
Chunk: 2

Company: TRANSCANADA PIPELINES LTD
Filing Date: 2025-10-06
Form: SUPPL
Chunk 2
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 and that a substantial portion of our assets and all or a substantial portion of the assets of those officers, directors and experts are located outside of the U.S. NEITHER THE U.S. SECURITIES AND EXCHANGE COMMISSION (THE “SEC”) NOR ANY STATE SECURITIES COMMISSION OR SIMILAR AUTHORITY HAS APPROVED OR DISAPPROVED THESE SECURITIES OR PASSED UPON THE ADEQUACY OR ACCURACY OF THIS PROSPECTUS SUPPLEMENT OR THE PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

|          |     | Price           
 to Public(1)(4) |   |     | Underwriting     
 Commission(2)(4) |   |     | Proceeds Before 
 Expenses(3)(4)  |   |
| Per Note |     |                 | % |     |                  | % |     |                 | % |
| Total    |     | U.S.$           |   |     | U.S.$            |   |     | U.S.$           |   |

| (1) | The public offering price set forth above does not include accrued interest, if any. |

| (2) | In consideration of the services of the Underwriters in connection with the offering of the Notes, we have                                                                                                                                   
 agreed to pay to the Underwriters a commission equal to: (a) for Notes sold to institutions,  % of the principal amount of such Notes; and (b) for all other Notes purchased by the Underwriters,  % of the principal                        
 amount of such Notes. The Underwriters’ commission indicated in the table above assumes that no Notes are sold to such institutions. The Underwriters’ commission will be paid by the Corporation from the gross proceeds of the offering of 
 Notes.                                                                                                                                                                                                                                       |

| (3) | The offering expenses, other than the underwriting commission, are estimated to be U.S.$  , which 
 will be paid from our general funds.                                                              |

| (4) | The amounts indicated in the table above assume that the Underwriters do not exercise the overallotment option. |

Interest on the Notes will accrue from October , 2025. Purchasers of Notes must pay accrued interest if settlement occurs after that date. We have granted the Underwriters an option to purchase up to an additional U.S.$ aggregate principal amount of Notes to cover overallotments for 30 days following the date of this prospect