Company Update

SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM  8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report:  August 15, 2025 INDEPENDENT BANK CORPORATION (Exact name of registrant as specified in its charter) Michigan 0-7818 38-2032782 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 4200 East Beltline Grand Rapids , Michigan 49525 (Address of principal executive office) (Zip Code) Registrant’s telephone number, including area code: ( 616 )  527-5820 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading symbol(s) Name of each exchange on which registered Common stock, no par value IBCP NASDAQ Global Select Market Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company o If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o Item 8.01     Other Events On August 15, 2025, Independent Bank Corporation (the “Corporation”), the holding company for Independent Bank, issued a press release announcing with great sadness that Michael M. Magee, Jr., current Board member and past Chairman (2013-2024) of the Board of Directors for Independent Bank Corporation and Independent Bank, passed away on August 3, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Item 9.01.     Financial Statements and Exhibits Exhibits . 99.1 Press release date August 15, 2025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 2 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. INDEPENDENT BANK CORPORATION (Registrant) Date 8/15/2025 By /s/Gavin A. Mohr Gavin A. Mohr, Principal Financial Officer 3