Company: TCPA
Filing Date: 2025-10-06
Form Type: SUPPL
Source: 0001193125-25-231083
Chunk: 6

Company: TRANSCANADA PIPELINES LTD
Filing Date: 2025-10-06
Form: SUPPL
Chunk 6
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:|
| High        |     |      |           0.7376 |     |      | 0.7510 |     |      |       0.7510 |     |      | 0.7617 |     |      | 0.8031 |
| Low         |     |      |           0.6848 |     |      | 0.7235 |     |      |       0.6937 |     |      | 0.7207 |     |      | 0.7217 |
| Average (1) |     |      |           0.7098 |     |      | 0.7361 |     |      |       0.7302 |     |      | 0.7410 |     |      | 0.7692 |
| Period end  |     |      |           0.7330 |     |      | 0.7306 |     |      |       0.6950 |     |      | 0.7383 |     |      | 0.7888 |

| (1) | The average of the exchange rates on the last day of each month during the applicable period. |

FORWARD-LOOKING INFORMATION This prospectus supplement, the prospectus and the documents incorporated by reference in the prospectus include “forward-looking information” and “forward-looking statements” (collectively, “ forward-looking information”) within the meaning of securities laws, including the “safe harbor” provisions of the Securities Act(Alberta), the Securities Act(Ontario), the United States Private Securities Litigation Reform Act of 1995,Section 21E of the United States Securities Exchange Act of 1934,as amended (the “ Exchange Act”), and Section 27A of the United States Securities Act of 1933,as amended (the “ Securities Act”). The words “anticipate”, “expect”, “believe”, “may”, “will”, “should”, “estimate”, “project”, “outlook”, “forecast”, “intend”, “target”, “plan” or other similar words are used to identify such forward-looking information. Forward-looking information in this prospectus supplement, the prospectus and the documents incorporated by reference in the prospectus is intended to provide potential investors with information regarding us, including management’s assessment of our future plans and financial outlook and our future prospects overall. Forward-looking information in this prospectus supplement includes statements under the headings “