Item 1.01 Entry into a Material Definitive Agreement. On January 14, 2022, pursuant to that certain Indenture and First Supplemental Indenture, each dated December 15, 2021 (the “Indenture”), by and between Mercantile Bank Corporation (the “Company”) and Wilmington Trust, National Association, as trustee (the “Trustee”), the Company authorized and directed the Trustee to (i) increase the aggregate principal amount of its 3.25% fixed-to-floating rate subordinated notes due 2032 (the “Original Notes”) from $75.0 million to $90.0 million and (ii) reopen the series of Original Notes for issuance of additional notes in the aggregate principal amount of $15,000,000 (the “Additional Notes”). The Co(…)