X0508 4 2024-03-04 0000094049 STEPAN CO SCL 0001616912 Behrens Scott R. 1101 SKOKIE BOULEVARD, SUITE 500 NORTHBROOK IL 60062 1 1 President & CEO 0 Performance Shares 2024-03-04 4 A 0 18287 0 A Common Stock 18287 18287 D Stock Appreciation Right 87.50 2024-03-04 4 A 0 24984 0 A 2025-03-04 2034-03-04 Common Stock 24984 24984 D Restricted Stock Units 2024-03-04 4 A 0 9143 0 A 2025-03-04 2027-03-04 Restricted Stock Units 9143 9143 D Each performance share represents a contingent right to receive one share of Stepan Company common stock. The performance shares vest upon the certification of Stepan Company achieving certain performance goals for the performance period ending December 31, 2026. Vests ratably over three years beginning on the date shown. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Stepan Company common stock. /s/ Stephanie J. Pacitti, Attorney-in-Fact for Scott R. Behrens 2024-03-06