X0306 4/A 2021-01-28 2021-02-01 0 0000708781 CASS INFORMATION SYSTEMS INC CASS 0001279652 LANGFITT GARY B 12444 POWERSCOURT DRIVE SUITE 550 ST. LOUIS MO 63131 0 1 0 0 COO Utilities Common Stock 2021-01-29 4 F 0 671 40.60 D 34640 D Common Stock 2021-01-29 4 A 0 2085 0.00 A 36725 D Common Stock 2021-01-29 4 F 0 916 40.60 D 35809 D Common Stock 2021-01-28 4 A 0 1993 0.00 A 37802 D Includes restricted stock bonus shares, subject to vesting and forfeiture. This Form 4 amendment is being filed to correct the amount of securities beneficially owned following the reported transactions and the date of a reported transaction. The shares were acquired upon the satisfaction of applicable performance conditions. Represents a grant of restricted stock units under the Amended and Restated Omnibus Stock and Performance Compensation Plan. Each restricted stock unit represents the contingent right to receive, upon vesting of the unit, one share of the issuer's common stock. The restricted stock units are scheduled to cliff vest in three years. Includes 88 shares acquired through participation in a Direct Stock Purchase and Dividend Reinvestment Plan. /S/ Gary B. Langfitt 2021-02-26