X0609 4 2026-05-08 0000094049 STEPAN CO SCL 0001519239 Painter Corning F. false 1101 SKOKIE BOULEVARD, SUITE 500 NORTHBROOK IL 60062 1 0 Common Stock 2026-05-08 4 A 0 2566 52.61 A 4999 D /s/ James A. Hart, attorney-in-fact for Corning F. Painter 2026-05-12