X0306 4 2017-02-15 0001025835 ENTERPRISE FINANCIAL SERVICES CORP EFSC 0001482570 KEENE S TURNER 150 N. MERAMEC ST. LOUIS MO 63105 1 EVP, Chief Financial Officer Common Stock 2017-02-15 4 A 0 8220 0 A 14417 D Common Stock 2017-02-15 4 F 0 2827 45.30 D 11590 D Common Stock 807 I 401(k) Plan Restricted Share Units Common Stock 10457 10457 D The shares of restricted 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 on a pro-rata basis over 3 years subject to continued employment by the reporting person and an Award Agreement mutually agreeable to both parties. On each vesting date, for each RSU vesting on such date, the reporting person will receive one share of Common Stock. /s/ Keene S. Turner 2017-02-17