X0306 4 2019-02-20 0000094049 STEPAN CO SCL 0001603410 Mergner Arthur W 22 W. FRONTAGE ROAD NORTHFIELD IL 60093 1 VP, Supply Chain Common Stock 2019-02-20 4 M 0 6744 A 15153.661 D Common Stock 2019-02-20 4 A 0 81.636 92.29 A 6429.332 I By Esop II Trust Stock Option (Right to Buy) 92.29 2019-02-20 4 A 0 3375 0 A 2019-12-31 2029-02-19 Common Stock 3375 3375 D Stock Appreciation Right 92.29 2019-02-20 4 A 0 10124 0 A 2019-12-31 2029-02-19 Common Stock 10124 10124 D Performance Shares 2019-02-20 4 A 0 2601 A Common Stock 2601 2601 D Performance Shares 2019-02-20 4 M 0 3649 D Common Stock 3649 0 D Share Units 2019-02-20 4 A 0 2263.195 92.57 A Common Stock 2263.195 8209.72 D The performance shares vested upon Stepan Company achieving certain financial targets by December 31, 2018. Vests ratably over three years beginning on the date shown. Each performance share represents a contingent right to receive 1 share of Stepan Company Stock. The performance shares vest upon Stepan Company achieving certain financial targets by December 31, 2021. Each performance share represents a contingent right to receive 1 share of Stepan Company Common Stock. The performance shares vest upon Stepan Company achieving certain financial targets by December 31, 2018. 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 Arthur W. Mergner 2019-02-22