X0609 4 2026-04-14 0001025835 ENTERPRISE FINANCIAL SERVICES CORP EFSC 0001977204 Huffman Bridget false 150 N. MERAMEC CLAYTON MO 63105 1 SEVP, Chief Risk Officer 0 Common Stock 2026-04-14 4 M 0 380 0 A 7229 D Common Stock 2026-04-14 4 F 0 168 58.30 D 7061 D Non Qualified Stock Option (Right to Buy) 39.50 2034-02-28 Common Stock 3791 3791 D Non Qualified Stock Option (Right to Buy) 57.17 2035-03-04 Common Stock 3322 3322 D Non Qualified Stock Option (Right to Buy) 43.81 2024-02-06 2031-02-25 Common Stock 816 816 D Non Qualified Stock Option (Right to Buy) 48.34 2025-02-03 2032-02-24 Common Stock 737 737 D Non Qualified Stock Option (Right to Buy) 54.46 2026-02-10 2033-02-28 Common Stock 1668 1668 D Restricted Share Units Common Stock 724 724 D Restricted Share Units Common Stock 1111 1111 D Restricted Share Units Common Stock 1323 1323 D Restricted Share Units 2026-04-14 4 M 0 380 0 D Common Stock 380 0 D Withholding of stock to satisfy tax withholding obligation on issuance of common stock. This option becomes exercisable in the first quarter of 2027, subject to continued employment by the reporting person. The option becomes exercisable in the first quarter of 2028, subject to continued employment by the reporting person. 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 2027, subject to continued employment by the reporting person. The RSU's vest 100% in the first quarter of 2028, subject to continued employment by the reporting person. The RSU's vest 100% in the first quarter of 2029, subject to continued employment by the reporting person. 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 April 14, 2026. On each vesting date, for each RSU vesting on such date, the reporting person will receive one share of Common Stock. /s/ Bridget Huffman 2026-04-16