Mercantile Bank director acquires 321 MBWM shares

Mercantile Bank Corporation director Steven Schweihofer reported acquiring 321 shares of the company’s common stock on 01/06/2026.

Accepted by SEC EDGAR 01/07/2026 - 04:26 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Mercantile Bank Corporation director Steven Schweihofer reported acquiring 321 shares of the company’s common stock on 01/06/2026. The shares were acquired at a price of $0 per share, increasing his directly held stake to 5,603 common shares following the transaction. The filing was made as a Form 4 for a single reporting person with direct ownership.

Insider Trade Summary

Grant/Award: 321 shares

Grant/Award 1 txn

Insider Schweihofer Steven

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	321	$0.00	$0.00

Holdings After Transaction: Common Stock — 5,603 shares (Direct)

Holdings Before and After: Common Stock, 5,282 to 5,603 shares (Direct)

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did MBWM report for director Steven Schweihofer?

The filing reports that director Steven Schweihofer acquired 321 shares of Mercantile Bank Corporation common stock on 01/06/2026.

At what price were the new MBWM shares acquired in this Form 4?

The 321 common shares were reported as acquired at a price of $0 per share.

How many MBWM shares does the director hold after this transaction?

Following the reported transaction, Steven Schweihofer directly beneficially owns 5,603 shares of Mercantile Bank Corporation common stock.

Is the MBWM Form 4 filed by more than one reporting person?

No. The Form 4 is indicated as filed by one reporting person, director Steven Schweihofer.

Does the MBWM Form 4 report any derivative securities transactions?

No derivative securities are listed; Table II is empty, and the only reported transaction is in common stock.

Is Steven Schweihofer a 10% owner of Mercantile Bank Corp (MBWM)?

In this filing, he is identified as a director and not checked as a 10% owner.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Schweihofer Steven

(Last) (First) (Middle)

C/O MERCANTILE BANK CORPORATION

310 LEONARD ST. NW

(Street)

GRAND RAPIDS MI 49504

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MERCANTILE BANK CORP [ MBWM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/06/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/06/2026		A		321	A	$0	5,603	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Adin J. Tarr, attorney-in-fact	01/07/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.