Company: TCPA
Filing Date: 2025-02-20
Form Type: SUPPL
Source: 0001193125-25-030844
Chunk: 22

Company: TRANSCANADA PIPELINES LTD
Filing Date: 2025-02-20
Form: SUPPL
Chunk 22
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 means, as of any Interest Reset Determination Date, as applicable, (1) the yield, under the
heading which represents the average for the immediately preceding week, appearing in the most recently published H.15 (as defined below), for the U.S. Treasury security with a maturity of five years from the next Interest Reset Date and
trading in the public securities market or (2) if there is no such published U.S. Treasury security with a maturity of five years from the next Interest Reset Date and trading in the public securities market, the rate will be determined by
the Calculation Agent by interpolation or extrapolation on a straight line basis between the most recent weekly average yield to maturity for two series of U.S. Treasury securities trading in the public securities market, (A) one maturing
as close as possible to, but earlier than, the Interest Reset Date following the next succeeding Interest Reset Determination Date, and (B) the other maturing as close as possible to, but later than, the Interest Reset Date following the next
succeeding Interest Reset Determination Date, in each case as published in the most recently published H.15.

If the H.15 is no longer
published or the Five-Year Treasury Rate cannot be determined pursuant to the methods described in clauses (1) or (2) above, then the Five-Year Treasury Rate will be the Five-Year Treasury Rate in effect for the prior Subsequent Fixed Rate
Period, or, in the case of the Initial Interest Reset Date, 4.386%.

“H.15” means the daily statistical release
designated as such, or any successor publication as determined by the Calculation Agent in its sole discretion, published by the Board of Governors of the United States Federal Reserve System, and “most recently published H.15” means the
H.15 published closest in time but prior to the close of business on the applicable Interest Reset Determination Date.

“Initial Interest Reset Date” means June 1, 2030.

“Interest Reset Date” means the Initial Interest Reset Date and each
date falling on the five-year anniversary of the preceding Interest Reset Date.

“Interest Reset Determination Date”
means, in respect of any Subsequent Fixed Rate Period, the day falling two business days prior to the beginning of such Subsequent Fixed Rate Period.

“Subsequent Fixed Rate Period” means the period from and including the Initial Interest Reset Date to, but not including, the
next following Interest Reset Date for the Notes and thereafter each period from