X0306 4 2023-02-14 0000094049 STEPAN CO SCL 0001747846 Catlett Janet Anne 1101 SKOKIE BOULEVARD, SUITE 500 NORTHBROOK IL 60062 1 VP, CHRO Common Stock 2023-02-14 4 M 0 1917 A 7081.796 D Common Stock 274.257 I By Esop II Trust Performance Shares 2023-02-14 4 M 0 1173 D Common Stock 1173 0 D Performance Shares 2023-02-14 4 A 0 1365 0 A Common Stock 1365 1365 D Restricted Stock Units 2023-02-14 4 A 0 682 0 A 2024-02-14 2026-02-14 Restricted Stock Units 682 682 D Stock Appreciation Right 109.92 2023-02-14 4 A 0 1898 0 A 2024-02-14 2033-02-14 Common Stock 1898 1898 D Share Units Common Stock 2650.34 2650.34 D The performance shares vested upon Stepan Company achieving certain financial targets by December 31, 2022. Includes exempt acquisitions under Rule 16a-11 pursuant to dividend reinvestments since the date of the reporting person's last report. Each performance share represents a contingent right to receive one share of Stepan Company common stock. The performance shares vest upon Stepan Company achieving certain financial targets by December 31, 2025. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Stepan Company common stock. Vests ratably over three years beginning on the date shown. Share Units convert on a one-for-one basis into Common Stock. Share Units are acquired under the Management Incentive Plan (As Amended and Restated Effective January 1, 2015) ("MIP"), a nonqualified deferred compensation plan which allows MIP participants to elect to defer all or a portion of their deferred compensation into accounts pursuant to MIP provisions. /s/ Stephanie J. Pacitti, Attorney-in-Fact for Janet A. Catlett 2023-02-16