Company: KEY-PI
Filing Date: 2025-02-26
Form Type: 424B5
Source: 0001193125-25-036859
Chunk: 66

Company: KEYCORP /NEW/
Filing Date: 2025-02-26
Form: 424B5
Chunk 66
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 note, the calculation agent will provide the interest rate then in effect and, if different, the interest rate that will become effective on the next interest reset date for the floating rate note. Payment of Interest Except as otherwise provided in the pricing supplement, we will pay installments of interest on floating rate notes as follows:

| • |     | for notes with interest payable monthly, on the third Wednesday of each month; |

| • |     | for notes with interest payable quarterly, on the third Wednesday of March, June, September, and December of each 
 year;                                                                                                             |

| • |     | for notes with interest payable semiannually, on the third Wednesday of each of the two months specified in the 
 applicable pricing supplement;                                                                                  |

| • |     | for notes with interest payable annually, on the third Wednesday of the month specified in the applicable pricing 
 supplement (each of the above an interest payment date); and                                                      |

| • |     | at maturity, redemption or repurchase. |

S-37

Each interest payment on a floating rate note will include interest accrued from, and
including, the issue date or the last interest payment date, as the case may be, to, but excluding, the following interest payment date or the maturity date or redemption date, as the case may be.

We will pay installments of interest on floating rate notes beginning on the first interest payment date after its issue date to holders of
record on the corresponding regular record date. Unless we otherwise specify in the applicable pricing supplement, the regular record date for a floating rate note will be on the 15th day (whether or not a business day) next preceding the interest
payment date. If an interest payment date (but not the maturity date) is not a business day, we will postpone payment until the next succeeding business day, provided that, in the case of SOFR notes, CORRA notes or EURIBOR notes, such interest
payment date will be the preceding business day if the next succeeding business day is in the next calendar month. If the maturity date of any floating rate note is not a business day, principal, premium, if any, and interest for that note will be
paid on the next succeeding business day, and no interest will accrue from and after the maturity date.

We will calculate accrued
interest on a floating rate note by multiplying the principal amount of a note by an accrued interest factor. The accrued interest factor is the sum of the interest factors calculated for each day in the period for which