Company: TCPA
Filing Date: 2025-02-20
Form Type: SUPPL
Source: 0001193125-25-030844
Chunk: 3

Company: TRANSCANADA PIPELINES LTD
Filing Date: 2025-02-20
Form: SUPPL
Chunk 3
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 sold and purchasers may not be able to resell Notes purchased under this prospectus supplement. This may affect the pricing of the Notes in the secondary market, the transparency and availability of trading prices, the liquidity of the Notes, and the extent of issuer regulation. In addition, we do not intend to apply for listing of the Notes on any securities exchange. See “ Risk Factors ” in this prospectus supplement and in the accompanying prospectus. The Underwriters, as principals, conditionally offer the Notes in the U.S., subject to prior sale, if, as and when issued by us and accepted by the Underwriters in accordance with the conditions contained in the Underwriting Agreement referred to under “ Underwriting” in this prospectus supplement, and subject to the approval of certain legal matters on our behalf by our Canadian legal counsel, Blake, Cassels & Graydon LLP and by our U.S. legal counsel, White & Case LLP and on behalf of the Underwriters by their U.S. legal counsel, Paul, Weiss, Rifkind, Wharton & Garrison LLP. The representatives of the Underwriters have advised us that the Underwriters propose to offer the Notes to the public initially at the public offering price specified above. After the Underwriters have made a reasonable effort to sell all of the Notes offered by this prospectus supplement at the price specified above, the offering price of the Notes may be decreased and may be further changed from time to time to an amount not greater than the price specified above. Any such reduction will not affect the proceeds we receive pursuant to the offering. In connection with the offering, the Underwriters may over-allot or effect transactions which stabilize, maintain or otherwise affect the market price of the Notes. As a result of such transactions, the price of the Notes may be higher than the price that might otherwise exist in the open market. Such transactions, if commenced, may be discontinued at any time. See “ Underwriting ” in this prospectus supplement. We expect to deliver the Notes to investors through the book-entrydelivery system of The Depository Trust Company and its direct and indirect participants, including Euroclear Bank SA/NV and Clearstream Banking, S.A, against payment in New York, New York on or about February 24, 2025. Our head office is located at 450 – 1 Street S.W. Calgary, Alberta, Canada, T2P 5H1. Joint Book-RunningManagers

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