Company: ADP
Filing Date: 2025-05-07
Form Type: 424B2
Source: 0001193125-25-114878
Chunk: 49

Company: AUTOMATIC DATA PROCESSING INC
Filing Date: 2025-05-07
Form: 424B2
Chunk 49
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 mature on the date specified in the applicable prospectus supplement. Each fixed rate debt security will bear interest from the date of issuance at the annual rate stated on its face until the principal is paid or made available for payment. Interest on fixed rate debt securities will be computed on the basis of a 360-dayyear of twelve 30-daymonths. Interest on fixed rate debt securities will accrue from and including the most recent interest payment date in respect of which interest has been paid or duly provided for, or, if no interest has been paid or duly provided for, from and including the issue date or any other date specified in a prospectus supplement on which interest begins to accrue. Interest will accrue to but excluding the next interest payment date, or, if earlier, the date of maturity or earlier redemption or repayment, as the case may be. Payments of interest on fixed rate debt securities will be made on the interest payment dates specified in the applicable prospectus supplement. However, if the first interest payment date is less than 15 days after the date of issuance, interest will not be paid on the first interest payment date, but will be paid on the second interest payment date. Unless otherwise specified in the applicable prospectus supplement, if any scheduled interest payment date, maturity date or date of redemption or repayment is not a business day, then we may pay the applicable interest, principal and premium, if any, on the next succeeding business day, and no additional interest will accrue during the period from and after the scheduled interest payment date, maturity date or date of redemption or repayment. (section 13.07) 3

A fixed rate debt security may pay a level amount in respect of both interest and principal amortized over the life of the debt security. Payments of principal and interest on amortizing debt securities will be made on the interest payment dates specified in the applicable prospectus supplement, and at maturity or upon any earlier redemption or repayment. Payments on amortizing debt securities will be applied first to interest due and payable and then to the reduction of the unpaid principal amount. We will provide to the original purchaser, and will furnish to subsequent holders upon request to us, a table setting forth repayment information for each amortizing debt security. Optional Redemption Unless the prospectus supplement relating to any series of debt securities provides otherwise with respect to such series, each series of debt securities will be redeemable in whole at any time or in part from time to time, at our option, at a redemption price equal to the greater of:

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