Summary of Significant Accounting Policies	12 Months Ended
Dec. 31, 2025
EBP 001
EBP, Accounting Policy [Line Items]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Accounting The accompanying financial statements are presented on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Investment Valuation and Income Recognition The Plan’s investments are stated at fair value. See Note 3 for further discussion on fair value measurements. Effective December 2, 2025, the Plan offers investment in EFSC common stock. Prior to December 2, 2025, the Plan offered investment in the EFSC Common Stock Fund (“the Fund”), which was tracked on a unitized basis. The Fund consisted of EFSC common stock and cash investments in the State Street Institutional U.S. Government Money Market Fund sufficient to meet the Fund’s daily liquidity needs. EFSC common stock is traded on a national securities exchange (Nasdaq: EFSC). The value of a unit reflected the combined market value of EFSC common stock and the cash investment held by the Fund. At December 31, 2024, 302,920 units were outstanding with a value of approximately $29.63 per unit. Participants were permitted to transfer into and out of the Fund on a daily basis, in the same manner as other investments in the Plan. Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on an accrual basis. Dividends are recorded on the ex-dividend date. Estimates and Assumptions The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of additions to and deductions from net assets during the reporting period. Actual results could differ from those estimates. Risk and Uncertainties The Plan invests in various investment securities, including common stock of the Company. Investment securities are exposed to various risks such as interest rate, market, and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the value of investments will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits. Subsequent Events The Plan has evaluated subsequent events through June 25, 2026, the date the financial statements were available to be issued, and there are none to report.

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2025

Summary of Significant Accounting Policies

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Accounting

The accompanying financial statements are presented on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).

Investment Valuation and Income Recognition

The Plan’s investments are stated at fair value. See Note 3 for further discussion on fair value measurements.

Effective December 2, 2025, the Plan offers investment in EFSC common stock. Prior to December 2, 2025, the Plan offered investment in the EFSC Common Stock Fund (“the Fund”), which was tracked on a unitized basis. The Fund consisted of EFSC common stock and cash investments in the State Street Institutional U.S. Government Money Market Fund sufficient to meet the Fund’s daily liquidity needs. EFSC common stock is traded on a national securities exchange (Nasdaq: EFSC). The value of a unit reflected the combined market value of EFSC common stock and the cash investment held by the Fund. At December 31, 2024, 302,920 units were outstanding with a value of approximately $29.63 per unit. Participants were permitted to transfer into and out of the Fund on a daily basis, in the same manner as other investments in the Plan.

Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on an accrual basis. Dividends are recorded on the ex-dividend date.

Estimates and Assumptions

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of additions to and deductions from net assets during the reporting period. Actual results could differ from those estimates.

Risk and Uncertainties

The Plan invests in various investment securities, including common stock of the Company. Investment securities are exposed to various risks such as interest rate, market, and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the value of investments will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits.

Subsequent Events

The Plan has evaluated subsequent events through June 25, 2026, the date the financial statements were available to be issued, and there are none to report.