Company: ADP
Filing Date: 2025-05-07
Form Type: 424B2
Source: 0001193125-25-114878
Chunk: 23

Company: AUTOMATIC DATA PROCESSING INC
Filing Date: 2025-05-07
Form: 424B2
Chunk 23
---
.

Notes held through DTC
will be settled in immediately available funds. Investor securities custody accounts will be credited with their holdings against payment on the settlement date. Notes held through Clearstream or Euroclear accounts will follow the settlement
procedures applicable to conventional eurobonds, except that there will be no temporary global security and no “lock-up” or restricted period. Notes will be credited to the securities custody
accounts on the settlement date against payment.

Secondary Market Trading

Since the purchaser determines the place of delivery, it is important to establish at the time of the trade where both the purchaser’s and
seller’s accounts are located to ensure that settlement can be made on the desired value date.

Trading between DTC Participants

Secondary market trading between DTC participants will be settled in immediately available funds.

Trading between Clearstream and/or Euroclear Participants

Secondary market trading between Clearstream participants and/or Euroclear participants will be settled using the procedures applicable to
conventional eurobonds.

Trading between DTC Seller and Clearstream or Euroclear Purchaser

When beneficial interests in the Global Notes are to be transferred from the account of a DTC participant to the account of a Clearstream
participant or a Euroclear participant, the purchaser will send instructions to Clearstream or Euroclear through a participant at least one business day prior to settlement. Clearstream or Euroclear will instruct the U.S. Depositary to receive a
beneficial interest in the Global Notes against payment. Unless otherwise set forth in this prospectus supplement, payment will include interest accrued on the beneficial interest in the Global Notes of a series so transferred from and including the
last interest payment date to and excluding the settlement date, on the basis on which interest is calculated on the Notes. For transactions settling on the 31st of the month, payment will include interest accrued to and excluding the first day of
the following month. Payment will then be made by the U.S. Depositary to the DTC participant’s account against delivery of the beneficial interest in the Global Notes. After settlement has been completed, the beneficial interest in the Global
Notes will be credited to the respective clearing system and by the clearing system, in accordance with its usual procedures, to the Clearstream or Euroclear participant’s account. The securities credit will appear the next

S-18

day (European time) and the cash debit will be back-valued to, and interest on the beneficial interest in the Global Notes will accrue from, the value date (which would be the preceding day when