Company: ADP
Filing Date: 2025-05-07
Form Type: 424B2
Source: 0001193125-25-114878
Chunk: 10

Company: AUTOMATIC DATA PROCESSING INC
Filing Date: 2025-05-07
Form: 424B2
Chunk 10
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 year, beginning on November 8, 2025. Interest on the Notes will accrue from May 8, 2025, or from the most recent date to which interest has been paid or provided for.

Interest on the Notes will be paid to holders of record on the April 23 or October 24 immediately preceding the interest payment date.
Interest on the Notes will be computed on the basis of a 360-day year of twelve 30-day months.

If an interest payment date for the Notes falls on a day that is not a business day, the interest payment shall be postponed to the next
succeeding business day, and no interest on such payment shall accrue for the period from and after such interest payment date. It will be an event of default under the indenture if we fail to pay interest when due and such failure continues for 30
days.

The Notes will mature on May 8, 2032. If the maturity date for the Notes falls on a day that is not a business day, the principal
of and interest on the Notes shall be due on the next succeeding business day, and no interest on such payment shall accrue for the period from and after the maturity date of the Notes.

S-10

Ranking The Notes will be direct, senior unsecured obligations of Automatic Data Processing, Inc. and will rank equally with all of our other direct, senior unsecured indebtedness from time to time outstanding. However, the Notes will be structurally subordinated to any indebtedness of our subsidiaries and will be effectively subordinated to any secured indebtedness to the extent of the value of the assets securing such indebtedness. As of March 31, 2025, we had $4,000.0 million of outstanding direct, senior unsecured indebtedness and no secured indebtedness, not including the debt of our subsidiaries. As of March 31, 2025, debt of our subsidiaries, to which the Notes will be structurally subordinated, was approximately $3.2 million. Optional Redemption Prior to March 8, 2032 (two months prior to the maturity date of the Notes) (the “Par Call Date”), we may redeem the Notes at our option, in whole or in part, at any time and from time to time, at a redemption price (expressed as a percentage of principal amount and rounded to three decimal places) equal to the greater of:

| (1) | (a) the sum of the present values of the remaining scheduled payments