X0306 4 2018-01-26 0001025835 ENTERPRISE FINANCIAL SERVICES CORP EFSC 0001682456 BAUCHE DOUGLAS 150 N. MERAMEC CLAYTON MO 63105 1 Chief Credit Officer Common Stock 2018-01-26 4 A 0 4500 0 A 5643 D Common Stock 2018-01-26 4 F 0 1469 48.70 D 4174 D Common Stock 2006 I 401(K) Plan Restricted Share Units Common Stock 250 250 D The shares of common stock were awarded pursuant to the Company's 2013 Stock Incentive Plan. Withholding of stock to satisfy tax withholding obligation on issuance of common stock. 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 RSUs were granted pursuant to the Company's 2013 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 RSUs vest at a rate of 33% annually over three years, subject to continued employment of the reporting person. Vesting occurs on the anniversary date of the grant each year, with final vest occurring on March 15, 2019. On each vesting date, for each RSU vesting on such date, the reporting person will receive one share of Common Stock. /s/ Douglas Bauche 2018-01-30