Company: ADP
Filing Date: 2025-05-07
Form Type: 424B2
Source: 0001193125-25-114878
Chunk: 17

Company: AUTOMATIC DATA PROCESSING INC
Filing Date: 2025-05-07
Form: 424B2
Chunk 17
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 to 101% of the aggregate principal amount of the Notes repurchased, plus accrued and unpaid interest, if any, on the Notes repurchased to, but excluding the date of repurchase (a “Change of Control Payment”). Within 30 days following any Change of Control Triggering Event or, at our option, prior to any Change of Control, but after public announcement of the transaction that constitutes or may constitute the Change of Control, a notice will be mailed to holders of the Notes, with a copy to the trustee, describing the transaction that constitutes or may constitute the Change of Control Triggering Event and offering to repurchase the Notes on the date specified in the notice, which date will be no earlier than 30 days and no later than 60 days from the date that notice is mailed, other than as may be required by law (a “Change of Control Payment Date”). The notice will, if mailed prior to the date of consummation of the Change of Control, state that the Change of Control Offer is conditioned on the Change of Control Triggering Event occurring on or prior to the applicable Change of Control Payment Date. S-14

On each Change of Control Payment Date, we will, to the extent lawful:

| • |     | accept for payment all Notes or portions of Notes properly tendered pursuant to the Change of Control Offer; |

| • |     | deposit with the paying agent an amount equal to the Change of Control Payment in respect of all Notes or 
 portions of Notes properly tendered; and                                                                  |

| • |     | deliver or cause to be delivered to the trustee the Notes properly accepted together with an officer’s                                                                                                                                                    
 certificate stating the aggregate principal amount of Notes being repurchased and that all conditions precedent provided for in the indenture to the Change of Control Offer and to the repurchase by us of Notes pursuant to the Change of Control Offer 
 have been complied with.                                                                                                                                                                                                                                  |

We will not be required to make a Change of Control Offer upon the occurrence of a Change of Control Triggering Event if a third party makes such an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by us and the third party repurchases all Notes properly tendered and not withdrawn under its offer. To the extent that we are required to offer to repurchase the Notes upon the occurrence of a Change of Control Triggering Event, we may not have sufficient funds to repurchase the Notes in cash at such time. In addition, our ability to repurchase the Notes for