Item 9B. Other Information

In connection with his previously announced departure from Automatic Data Processing, Inc. (the “Company”) on September 30, 2025, Don McGuire entered into a separation agreement and release (the “agreement”), dated August 1, 2025. His departure constitutes a “Qualifying Termination” as defined under the Company’s Corporate Officer Severance Plan (the “Plan”) and the agreement sets forth the terms of his separation and release in accordance with the Plan. A copy of the agreement is filed as Exhibit 10.31 hereto and incorporated herein by reference.

For the fiscal quarter ended June 30, 2025, none of the Company’s directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of Company securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement.”