Enterprise Financial Services Corporation Depositary Shares Each Representing a 1/40th Interest in a Share of 5% Fixed Rate Non-Cumulative Perpetual Preferred Stock Series A

Enterprise Financial Services Corp operates as the financial holding company for Enterprise Bank & Trust that offers banking and wealth management services to individuals and corporate customers. It offers checking savings and money market accounts and certificates of deposit. The company also provides commercial and industrial commercial real estate construction and land development residential real estate agricultural and consumer loans. In addition it offers treasury management and international trade services; tax credit brokerage services consisting of the acquisition of tax credits and sale of these tax credits to clients; and financial and estate planning investment management and trust services to businesses individuals institutions retirement plans and non-profit organizations. Further the company offers fiduciary financial advisory and merchant processing services; and debit and credit cards. Additionally it provides international banking insurance internet and mobile banking remote deposit capture positive pay fraud detection and prevention automated payable check imaging and statement and document imaging services; and cash management products controlled disbursements repurchase agreements and sweep investment accounts. The company was founded in 1988 and is headquartered in Clayton Missouri.