X0609 4 2026-11-04 0000008670 AUTOMATIC DATA PROCESSING INC ADP 0001378514 Rodriguez Carlos A false ONE ADP BOULEVARD ROSELAND NJ 07068 1 1 Common Stock 2026-11-04 4 S 0 4.0000 301.8150 D 22869.3041 D Common Stock 2026-11-04 4 S 0 6.0000 302.0966 D 22863.3041 D Common Stock 2026-11-04 4 S 0 9.0000 304.8711 D 22854.3041 D Common Stock 2026-11-04 4 S 0 13.0000 302.9761 D 22841.3041 D Common Stock 2026-11-04 4 S 0 14.0000 303.1942 D 22827.3041 D Common Stock 2026-11-04 4 S 0 24.0000 304.8775 D 22803.3041 D Common Stock 2026-11-04 4 S 0 24.0000 304.0766 D 22779.3041 D Common Stock 2026-11-04 4 S 0 32.0000 300.0434 D 22747.3041 D Common Stock 2026-11-04 4 S 0 34.0000 300.0558 D 22713.3041 D Common Stock 2026-11-04 4 S 0 37.0000 304.2056 D 22676.3041 D Common Stock 2026-11-04 4 S 0 112.0000 303.5829 D 22564.3041 D Common Stock 2026-11-04 4 S 0 155.0000 300.2006 D 22409.3041 D Common Stock 2026-11-04 4 S 0 159.0000 304.0769 D 22250.3041 D Common Stock 2026-11-04 4 S 0 180.0000 305.0607 D 22070.3041 D Common Stock 2026-11-04 4 S 0 180.0000 300.0000 D 21890.3041 D Common Stock 2026-11-04 4 S 0 198.0000 304.0034 D 21692.3041 D Common Stock 2026-11-04 4 S 0 199.0000 304.8397 D 21493.3041 D Common Stock 2026-11-04 4 S 0 228.0000 300.0052 D 21265.3041 D Common Stock 2026-11-04 4 S 0 280.0000 303.0299 D 20985.3041 D Common Stock 2026-11-04 4 S 0 288.0000 304.7745 D 20697.3041 D Common Stock 2026-11-04 4 S 0 455.0000 304.0469 D 20242.3041 D Common Stock 13813.0000 I By Trust The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2025. David Kwon (POA on File) 2026-11-05