ADP: Material agreement · New financial obligation

Item 1.01 Entry into a Material Definitive Agreement. On June 26, 2026, Automatic Data Processing, Inc., a Delaware corporation (the “Company”), entered into a $5.7 billion 364-Day Credit Agreement (the “364-Day Facility”) and a $3.5 billion Five-Year Credit Agreement (the “Five-Year Facility,” and together with the 364-Day Facility, the “New Facilities”) with a group of lenders (the “Lenders”). The Five-Year Facility contains an accordion feature under which the aggregate commitment can be increased by $500 million to an aggregate principal amount of $4 billion, subject to the availability of additional commitments. The 364-Day Facility replaced the Company’s prior $4.55 billion 364-day facility, entered into on June 27, 2025, and the Five-Year Facility replaced the Company’s prior $3.5 billion five-year facility, entered into on June 28, 2024, both of which were terminated on June 26, 2026. JPMorgan Chase Bank, N.A. acts as Administrative Agent, and Bank of America, N.A., BNP Paribas, Wells Fargo Bank, N.A. and Deutsche Bank Securities Inc., as Syndication Agents, for each of the New Facilities. The New Facilities will have a revolving credit option, which in the case of the Five-Year Facility is comprised of U.S. Dollar, Canadian Dollar and Euro tranche loans. The revolving credit will be provided on a committed basis. Amounts borrowed and repaid may be reborrowed subject to availability under each New Facility. The Lenders’ commitments under the 364-Day Facility will expire on June 25, 2027 and any borrowings outstanding will mature and be payable on such date (or, at the option of the Company, subject to the accuracy of all representations and warranties and the absence of any default, on June 25, 2028). The Lenders’ commitments under the Five-Year Facility will ex