MBWM

mbwm20260604_8k.htm

false 0001042729

0001042729

2026-07-21 2026-07-21

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (date of earliest event reported): July 21, 2026

Mercantile Bank Corporation

(Exact name of registrant as specified in its charter)

Michigan 000-26719 38-3360865

(State or other jurisdiction

of incorporation)

(Commission File

Number)

(IRS Employer

Identification Number)

310 Leonard Street NW, Grand Rapids, Michigan 49504

(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code 616-406-3000

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):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ 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

MBWM

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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.          ☐

Item 2.02

Results of Operations and Financial Condition.

Earnings Release

On July 21, 2026, Mercantile Bank Corporation (the “Company”) issued a press release announcing earnings and other financial results for the quarter ended June 30, 2026.  A copy of the press release is furnished as Exhibit 99.1 to this report and incorporated here by reference.

Item 7.01

Regulation FD Disclosure.

The Company has prepared presentation materials (the “Conference Call & Webcast Presentation”) that management intends to use during its previously announced Second Quarter 2026 conference call on Tuesday, July 21, 2026, at 10:00 am Eastern Time, and from time to time thereafter in presentations about the Company’s operations and performance. The Company may use the Conference Call & Webcast Presentation, possibly with modifications, in presentations to current and potential investors, analysts, lenders, business partners, acquisition candidates, customers, employees and others with an interest in the Company and its business.

A copy of the Conference Call & Webcast Presentation is furnished as Exhibit 99.2 to this report and incorporated here by reference. The Conference Call & Webcast Presentation is also available on the Company's website at http://ir.mercbank.com. Materials on the Company’s website are not part of or incorporated by reference into this report.

In accordance with General Instruction B.2 of Form 8-K, the information in this Current Report on Form 8-K, including Exhibits 99.1 and 99.2, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01

Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number                    Description

99.1

Press release of Mercantile Bank Corporation dated July 21, 2026, reporting financial results and earnings for the quarter ended June 30, 2026.

99.2

Mercantile Bank Corporation Conference Call & Webcast Presentation dated July 21, 2026.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

2

Signatures

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 hereunto duly authorized.

Mercantile Bank Corporation

By:

/s/ Charles E. Christmas

Charles E. Christmas

Executive Vice President, Chief

Financial Officer and Treasurer

Date: July 21, 2026

3

EX-99.1

2 ex_929699.htm

EXHIBIT 99.1

ex_929699.htm

Exhibit 99.1

Mercantile Bank Corporation Announces Solid First Quarter 2026 Results

Growth in net interest income and key fee income categories with ongoing strength in asset quality measures and capital levels highlight the quarter

GRAND RAPIDS, Mich., April 21, 2026 – Mercantile Bank Corporation (NASDAQ: MBWM) ("Mercantile") reported net income of $22.7 million, or $1.32 per diluted share, for the first quarter of 2026, compared with net income of $19.5 million, or $1.21 per diluted share, for the respective prior-year period.

Excluding after-tax one-time costs associated with the year-end 2025 acquisition of Eastern Michigan Financial Corporation and previously announced core and digital banking system conversion (a non-GAAP measurement), net income improved to $25.2 million, or $1.46 per diluted share, for the first quarter of 2026.  Earnings per diluted share increased $0.25, or approximately 21 percent, in the first quarter of 2026 compared to the first quarter of 2025 using this non-GAAP basis.

“Our financial performance remained strong during the first quarter of 2026, further demonstrating our ability to effectively administer the prolonged period of global economic uncertainty and increasing geopolitical tensions,” said Ray Reitsma, President and Chief Executive Officer of Mercantile.  “The solid operating results reflected increased net interest income, an improved net interest margin, strong growth in treasury management fees, interest rate swap income, mortgage banking income, and payroll services fees, a negative provision for credit losses, robust local deposit growth, and sustained strength in asset quality and capital measures.  The strong net growth in local deposits, which occurred despite the typical level of seasonal deposit withdrawals, provided for a further reduction in our loan-to-deposit ratio.  The first quarter of 2026 represented the initial period of financial performance that included Eastern Michigan Bank’s operating results.”

First quarter highlights include:

●

Return on average assets of 1.4 percent and return on average equity of 12.5 percent, and 1.5 percent and 14.0 percent, respectively, on a non-GAAP basis

●

Tangible book value per common share of $37.34 as of March 31, 2026, up $0.56, or approximately 2 percent, since December 31, 2025, and $2.92, or over 8 percent, since March 31, 2025

●

Net revenue expansion of over 18 percent compared to the prior-year first quarter, including net interest income growth of over 15 percent

●

Increased net interest margin primarily reflecting lower cost of funds and continued repricing of matured fixed rate loans and securities

●

Notable increases in treasury management fees, mortgage banking income, and payroll services fees of approximately 26 percent, 12 percent, and 5 percent, respectively

●

Decline in effective tax rate from approximately 19 percent during the first quarter of 2025 to 17 percent during the first quarter of 2026 largely due to an increase in aggregate tax benefits derived from the acquisition of transferable energy tax credits and net benefits from low-income housing and historical tax credit investments

●

Continued strength in commercial loan pipeline

●

Sustained low levels of nonperforming assets, past due loans, and loan charge-offs

●

Notable reduction in loan-to-deposit ratio from approximately 99 percent as of March 31, 2025, and 91 percent as of December 31, 2025, to approximately 89 percent as of March 31, 2026, mainly reflecting robust local deposit growth

●

Strong tangible and regulatory capital positions

Operating Results

Net revenue, consisting of net interest income and noninterest income, was $67.6 million during the first quarter of 2026, up $10.3 million, or 18.1 percent, from $57.3 million during the prior-year first quarter.  Net interest income during the first three months of 2026 was $55.9 million, up $7.4 million, or 15.1 percent, from $48.5 million during the respective 2025 period primarily due to growth in earning assets and a slightly higher net interest margin.  Eastern Michigan Bank’s net interest income totaled $5.9 million during the first quarter of 2026.  Noninterest income totaled $11.7 million during the current-year first quarter, up $3.0 million, or 34.3 percent, from $8.7 million during the first quarter of 2025.   The increase in noninterest income mainly reflected higher levels of treasury management fees, interest rate swap income, and mortgage banking income.  Eastern Michigan Bank generated $0.5 million in noninterest income during the first three months of 2026, largely reflecting treasury management fees.

The net interest margin was 3.55 percent in the first quarter of 2026, up from 3.47 percent in the prior-year first quarter.  The yield on average earning assets was 5.42 percent during the first three months of 2026, a decrease from 5.73 percent during the respective 2025 period.  The low

mbwm20260120_8ka.htm

Q4 Earnings Release Amended true 0001042729

0001042729

2026-01-20 2026-01-20

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (date of earliest event reported): January 20, 2026

Mercantile Bank Corporation

(Exact name of registrant as specified in its charter)

Michigan 000-26719 38-3360865

(State or other jurisdiction

of incorporation)

(Commission File

Number)

(IRS Employer

Identification Number)

310 Leonard Street NW, Grand Rapids, Michigan 49504

(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code 616-406-3000

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):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ 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

MBWM

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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.          ☐

EXPLANATORY NOTE

On January 20, 2026, Mercantile Bank Corporation (the “Company”) furnished a Current Report on Form 8-K (the “Original Report”) to the Securities and Exchange Commission (the “SEC”) announcing its financial results for its fourth quarter and year ended December 31, 2025, which Original Report included presentation materials that management intends to use during its Fourth Quarter 2025 conference call on Tuesday, January 20, 2026 at 10:00 am Eastern Time, and from time to time thereafter in presentations about the Company’s operations and performance (the “Original Presentation”) as Exhibit 99.2.

This Current Report on Form 8-K/A amends the Original Report to furnish a revised version of the Original Presentation (the “Revised Presentation”) to correct the reported performance metrics for 2026 for overhead costs in the first through fourth quarter and fee income in the third and fourth quarter on slide 26. Other than correcting this error in the Revised Presentation, all other information included in the Original Report is unchanged. The Revised Presentation is furnished with this Amendment as Exhibit 99.1 hereto.

Item 7.01

Regulation FD Disclosure.

The Company has prepared presentation materials (the “Conference Call & Webcast Presentation”) that management intends to use during its previously announced Fourth Quarter 2025 conference call on Tuesday, January 20, 2026 at 10:00 am Eastern Time, and from time to time thereafter in presentations about the Company’s operations and performance. The Company may use the Conference Call & Webcast Presentation, possibly with modifications, in presentations to current and potential investors, analysts, lenders, business partners, acquisition candidates, customers, employees and others with an interest in the Company and its business.

A copy of the Conference Call & Webcast Presentation is furnished as Exhibit 99.1 to this report and incorporated here by reference.  The Conference Call & Webcast Presentation is also available on the Company's website at http://ir.mercbank.com. Materials on the Company’s website are not part of or incorporated by reference into this report.

In accordance with General Instruction B.2 of Form 8-K, the information in this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01

Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number                    Description

99.1

Mercantile Bank Corporation Conference Call & Webcast Presentation dated January 20, 2026 (as