X0306 4 2022-01-24 0001025835 ENTERPRISE FINANCIAL SERVICES CORP EFSC 0001682456 BAUCHE DOUGLAS 150 N. MERAMEC CLAYTON MO 63105 1 Chief Credit Officer Common Stock 2022-01-24 4 M 0 453 0 A 9337 D Common Stock 2022-01-24 4 F 0 182 48.20 D 9155 D Common Stock 2022-01-24 4 A 0 1068 0 A 10223 D Common Stock 2022-01-24 4 F 0 428 48.20 D 9795 D Common Stock 2525 I 401(K) Plan Restricted Share Units 2022-01-24 4 M 0 453 0 D Common Stock 453 0 D Non Qualified Stock Option (Right to Buy) 43.81 2031-02-25 Common Stock 4730 4730 D Restricted Share Units Common Stock 557 557 D Restricted Share Units Common Stock 897 897 D Withholding of stock to satisfy tax withholding obligation on issuance of common stock. The shares of common stock were awarded pursuant to the Company's 2018 Stock Incentive Plan. The reporting person holds units in the stock fund and the number of shares reported as indirectly held in the 401 (k) plan in this row is an estimate of the number of shares of the issuer's Common Stock held in the unitized stock fund and allocated to the reporting person's account. The RSU's were granted pursuant to the Company's 2018 Stock Incentive Plan. Each RSU represents the right to receive one share of Common Stock, subject to adjustment as provided in the Grant Agreement. The RSU's vest 100% in the first quarter of 2022, subject to continued employment by the reporting person. This option becomes exercisable after a three year period on 2/25/24. The RSU's vest 100% in the first quarter of 2023, subject to continued employment by the reporting person. The RSU's vest 100% in the first quarter of 2024, subject to continued employment by the reporting person. /s/ Douglas Bauche 2022-01-26