INDEPENDENT BANK CORP /MI/

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED September 30, 2026

Commission file number 0-7818

INDEPENDENT BANK CORPORATION

(Exact name of registrant as specified in its charter)

98 Ottawa Ave NW, Grand Rapids, Michigan 49503

(Address of principal executive offices)

(616)527-5820

(Registrant's telephone number, including area code)

4200 East BeltlineGrand Rapids, Michigan 49525

Former name, address and fiscal year, if changed since last report.

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YES x NO¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

YES x NO¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company.

Large accelerated filer¨ Accelerated filer x Non-accelerated filer¨ Smaller reporting company¨ Emerging growth company¨

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. Yes¨ No¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

YES¨ NOx

Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date: common stock, no par value,22,078,490 as of November 3, 2026.

INDEX

Index

FORWARD-LOOKING STATEMENTS

Statements in this report that are not statements of historical fact, including statements that include terms such as ‘‘will,’’ ‘‘may,’’ ‘‘should,’’ ‘‘believe,’’ ‘‘expect,’’ ‘‘forecast,’’ ‘‘anticipate,’’ ‘‘estimate,’’ ‘‘project,’’ ‘‘intend,’’ ‘‘likely,’’ ‘‘optimistic’’ and ‘‘plan’’ and statements about future or projected financial and operating results, plans, projections, objectives, expectations, and intentions, are forward-looking statements. Forward-looking statements include, but are not limited to, descriptions of plans and objectives for future operations, products or services; projections of our future revenue, earnings or other measures of economic performance; forecasts of credit losses and other asset quality trends; statements about our business and growth strategies; and expectations about economic and market conditions and trends. These forward-looking statements express our current expectations, forecasts of future events, or long-term goals. They are based on assumptions, estimates, and forecasts that, although believed to be reasonable, may turn out to be incorrect. Actual results could differ materially from those discussed in the forward-looking statements for a variety of reasons, including:

•economic, market, operational, liquidity, credit, and interest rate risks associated with our business;

•economic conditions generally and in the financial services industry, particularly economic conditions within Michigan and the regional and local real estate markets in which our bank operates;

•the failure of assumptions underlying the establishment of, and provisions made to, our allowance for credit losses;

•the effects of our completed acquisition of HCB Financial Corp., which closed on July 1, 2026 during the quarterly period covered by this report;

•risks related to the integration of HCB Financial Corp., including potential disruption to our business, diversion of management attention, retention of customers and employees, systems conversion, operational challenges, and the realization of anticipated benefits, cost savings, revenue opportunities, and other financial and strategic effects;

•credit, asset quality, liquidity, capital, compliance, and operational risks associated with the acquired business, including risks relating to acquired loans, deposits, customer relationships, and banking operations;

•the outcome of pending litigation;

•increased competition in the financial services industry, either nationally or regionally;

•our ability to achieve loan and deposit growth;

•volatility and direction of market interest rates;

•the continued services of our management team;

•changes in, or the implementation of, legislation, regulation, supervisory guidance, capital standards, accounting standards, governmental monetary or fiscal policies, any of which may have significant effects on us and the financial services industry; and

•cybersecurity incidents, fraud, and other technology-related risks, including those involving the use of AI by third parties.

This list provides examples of factors that could affect the results described by forward-looking statements contained in this report, but the list is not intended to be all-inclusive. The risk factors disclosed in Part I – Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025, as updated by any new or modified risk factors disclosed in Part II – Item 1A of any subsequently filed Quarterly Report on Form 10-Q, include the known risks our management believes could materially affect the results described by forward-looking statements in this report. However, those risks may not be the only risks we face. Our results of operations, cash flows, financial position, and prospects could also be materially and adversely affected by additional factors that are not presently known to us that we currently consider to be immaterial, or that develop after the date of this report. We cannot assure you that our future results will meet expectations. While we believe the forward-looking statements in this report are reasonable, you should not place undue reliance on any forward-looking statement. In addition, these statements speak only as of the date made. We do not undertake, and expressly disclaim, any obligation to update or alter any statements, whether as a result of new information, future events, or otherwise, except as required by applicable law.