Director — Sandra A. Van Trease: A director resigned from the board and committees, but the filing explicitly states there was no disagreement with management, indicating an orderly departure rather than a negative shock.

Other Events. On July 20, 2026, the Company’s Board of Directors approved the repurchase of up to 2,000,000 additional shares of the Company’s common stock, which are in addition to the 249,400 shares available for repurchase under the Company’s stock repurchase plan announced in May 2022 for 2,000,000 shares of common stock (combined, the “Stock Repurchase Plan”). The additional amount approved for repurchase pursuant to the Stock Repurchase Plan represents approximately 5% of the Company’s…

Results of Operations and Financial Condition. On July 22, 2026, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended June 30, 2026. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On July 23, 2026, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended June 30, 2026. The sli…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information in

Entry into a Material Definitive Agreement. On June 17, 2026, Enterprise Financial Services Corp (the “Company”) completed the issuance and sale (the “Offering”) of $175,000,000 aggregate principal amount of its 6.25% Fixed-to-Floating Rate Subordinated Notes due 2036 (the “Notes”). The Offering was completed pursuant to the Company’s Registration Statement on Form S-3 (File No. 333-294014) (including a base prospectus) filed with the Securities and Exchange Commission (the “SEC”) on March 4,…

Results of Operations and Financial Condition. On April 22, 2026, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended March 31, 2026. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On April 23, 2026, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended March 31, 2026. The…

Results of Operations and Financial Condition. On January 26, 2026, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended December 31, 2025. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On January 27, 2026, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended December 31,…

Results of Operations and Financial Condition. On October 27, 2025, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On October 28, 2025, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended September 3…

Regulation FD Disclosure. In response to investor inquiries about a recent peer bank 8-K filing, Enterprise Financial Services Corp (the “Company”) is providing additional information about certain Enterprise Bank & Trust’s (the “Bank”) credit relationships. The Bank has seven commercial real estate loans totaling $68.4 million in the aggregate to seven special purpose entities (each an “SPE Borrower”) affiliated with two commercial banking relationships in Southern California that share some…

Other Events. On October 10, 2025, (the "Closing Date"), the Company's wholly-owned subsidiary, EB&T, a Missouri state-chartered trust company with banking powers, closed on its previously-announced transaction with FIB, a Montana state-chartered bank. Pursuant to the terms of the Purchase and Assumption Agreement, dated as of April 28, 2025, by and between EB&T and FIB (the “Purchase Agreement”), EB&T acquired twelve (12) branches from FIB, with ten (10) in Arizona and two (2) in Kansas, cer…

Regulation FD Disclosure. On October 14, 2025, Enterprise Financial Services Corp (the "Company") issued a press release announcing the completion by the Company’s wholly-owned subsidiary, Enterprise Bank & Trust (“EB&T”), of an acquisition of twelve (12) branches from First Interstate Bank (“FIB”), a wholly-owned subsidiary of First Interstate BancSystem, Inc., as discussed in

Chief Banking Officer, Chief Credit Officer, Chief Operating Officer, Chief Financial Officer — Doug Bauche, Kevin Handley, Keene Turner, Troy Dumlao: The company is promoting several executives to new roles as part of its growth and succession planning.

Director — Lars C. Anderson: The company appointed Lars C. Anderson to the Board of Directors and increased the size of the Board from eleven to twelve.

Results of Operations and Financial Condition. On July 28, 2025, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended June 30, 2025. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On July 29, 2025, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended June 30, 2025. The sli…

Other Events. On April 28, 2025, the Company's wholly owned subsidiary, Enterprise Bank entered into a Purchase Agreement with First Interstate pursuant to which Enterprise Bank will acquire twelve branches (the "Branches") from First Interstate, including certain deposits and loans, and the owned real estate and fixed and other assets associated with the Branches. The twelve branches Enterprise Bank will acquire are: • 18511 N. Scottsdale Rd., Scottsdale, AZ • 4141 N. Scottsdale Rd. Ste. 101…

Vice-Chairman — Scott Goodman: Mr. Scott Goodman is transitioning to a part-time, non-management role as Vice-Chairman.

Results of Operations and Financial Condition. On April 28, 2025, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended March 31, 2025. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On April 29, 2025, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended March 31, 2025. The…

Results of Operations and Financial Condition. On January 27, 2025, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended December 31, 2024. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On January 28, 2025, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended December 31,…

Director — Michael E. Finn: Michael E. Finn was appointed to serve on the Risk and Compensation Committees of the Board.

Director — Michael E. Finn: The company appointed Michael E. Finn to the Board for his extensive risk management and regulatory expertise.

Results of Operations and Financial Condition. On October 21, 2024, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended September 30, 2024. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On October 22, 2024, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended September 3…

Results of Operations and Financial Condition. On July 22, 2024, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended June 30, 2024. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On July 23, 2024, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended June 30, 2024. The sli…

Results of Operations and Financial Condition. On April 22, 2024, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended March 31, 2024. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On April 23, 2024, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended March 31, 2024. The…

Results of Operations and Financial Condition. On January 22, 2024, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended December 31, 2023. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On January 23, 2024, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended December 31,…

Results of Operations and Financial Condition. On October 23, 2023, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended September 30, 2023. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference. On October 24, 2023, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended September 3…