X0609 4 2026-04-14 0001025835 ENTERPRISE FINANCIAL SERVICES CORP EFSC 0001283697 DUMLAO TROY false 150 N. MERAMEC ST LOUIS MO 63105 1 EVP, Chief Accounting Officer 0 Common Stock 2026-04-14 4 M 0 380 0 A 8641 D Common Stock 2026-04-14 4 F 0 168 58.30 D 8473 D Depository Shares 400 D Non Qualified Stock Option (Right to Buy) 43.81 2024-02-06 2031-02-25 Common Stock 1058 1058 D Non Qualified Stock Option (Right to Buy) 48.34 2025-02-03 2032-02-24 Common Stock 1266 1266 D Non Qualified Stock Option (Right to Buy) 54.46 2026-02-10 2033-02-28 Common Stock 1769 1769 D Non Qualified Stock Option (Right to Buy) 39.50 2034-02-28 Common Stock 2722 2722 D Non Qualified Stock Option (Right to Buy) 57.17 2035-03-04 Common Stock 1919 1919 D Restricted Share Units Common Stock 520 520 D Restricted Share Units Common Stock 642 642 D Restricted Share Units Common Stock 836 836 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. Each Depositary Share represents a 1/40th interest in a share of the Issuer's 5.00% Series A Fixed-Rate Non-Cumulative Perpetual Preferred Stock. Depositary Shares were purchased in an underwritten public offering. 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/ Troy Dumlao 2026-04-16