X0306 4 2019-02-01 0000094049 STEPAN CO SCL 0001105432 STEPAN F QUINN 22 W. FRONTAGE ROAD NORTHFIELD IL 60093 1 Common Stock 2019-02-01 4 M 0 42689.962 A 127749.964 D Common Stock 2019-02-01 4 D 0 41621.831 87.93 D 85060.002 D Common Stock 2019-02-01 4 F 0 448.081 87.93 D 127301.883 D Common Stock 102.456 I By Esop II Trust Common Stock 170269 I By Spouse Common Stock 505222 I Stepan Venture II Partnership Share Units 2019-02-01 4 M 0 42689.962 D Common Stock 42689.962 305143.618 D Share Units converted on a one-for-one basis into Common Stock. The Share Units were 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. Reflects Share Units that were settled in cash pursuant to the terms of the MIP. Pursuant to the terms of the MIP, amounts deferred are distributed to MIP participants in accordance with the terms of the MIP. Reflects shares withheld in connection with settlement of stock-settled share units under the MIP. Pursuant to the terms of the MIP, amounts deferred are distributed to MIP participants in accordance with the terms of the MIP. Share Units were acquired under the MIP. Share Units convert on a one-for-one basis into Common Stock Amounts deferred into Share Units are distributed to the participant in ten installments following the end of employment. /s/ Stephanie J. Pacitti, attorney-in-fact for F. Quinn Stepan 2019-02-04