X0508 4/A 2024-04-24 2024-04-26 0000076334 Parker-Hannifin Corp PH 0002004243 Scott Patrick 6035 PARKLAND BOULEVARD CLEVELAND OH 44124 0 1 0 0 VP & Pres. - Fluid Conn. 0 Common Stock 2024-04-24 4 A 0 608 0 A 3488 D Common Stock 2024-04-24 4 F 0 273 546.35 D 3215 D Common Stock 141.84 I Parker Retirement Savings Plan and Savings Restoration Plan Exhibit List: Exhibit 24 Power of Attorney: On April 26, 2024, the reporting person filed a Form 4 which inadvertently included the incorrect Power of Attorney. The sole purpose of this Amendment is to file the Power of Attorney filed herewith as Exhibit 24. The transactions included on this report were previously included on the Form 4 filed by the reporting person on April 26, 2024 and have not been revised. /s/ Stephanie R. Breitenbach, Attorney-In-Fact 2025-04-25