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Note 14 - Benefit Plans | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Retirement Benefits [Text Block] | NOTE 14 – BENEFIT PLANS We have a 401(k) benefit plan that covers substantially all of our employees. The percent of our matching contributions to the 401(k) benefit plan is determined annually by the Board of Directors. The matching contribution had been 4.25% since January 1, 2014; effective April 1, 2018, the matching contribution was increased to 5.00%. Matching contributions, if made, are immediately vested. Our 2021, 2020 and 2019 matching 401(k) contributions charged to expense were $2.1 million, $1.9 million and $1.7 million, respectively. We have a deferred compensation plan in which all persons serving on the Board of Directors may defer all or portions of their annual retainer and meeting fees, with distributions to be paid upon termination of service as a director or specific dates selected by the director. We also have a non-qualified deferred compensation program in which selected officers may defer all or portions of salary and bonus payments. The deferred amounts, totaling $1.2 million and $2.4 million as of December 31, 2021 and 2020, respectively, are categorized as other liabilities in the Consolidated Balance Sheets, and are paid interest at a rate equal to the Wall Street Journal Prime Rate. Interest expense was less than $0.1 million during 2021, and $0.1 million during 2020 and 2019. The Mercantile Bank Corporation Employee Stock Purchase Plan of 2014 is a non-compensatory plan intended to encourage full- and part-time employees of Mercantile and its subsidiaries to promote our best interests and to align employees’ interests with the interests of our shareholders by permitting employees to purchase shares of our common stock through regular payroll deductions. Shares are purchased on the last business day of each calendar quarter at a price equal to the consolidated closing bid price of our common stock reported on The Nasdaq Stock Market. A total of 250,000 shares of common stock may be issued under the existing plan; however, the number of shares may be adjusted to reflect any stock dividends and other changes in our capitalization. The number of shares issued totaled 1,481 and 2,264 in 2021 and 2020, respectively. As of December 31, 2021, there were approximately 237,000 shares available under our current plan.

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