Mercantile Bank (MBWM) director awarded 715 shares of common stock

Rhea-AI Filing Summary

MacDonald Richard D reported acquisition or exercise transactions in this Form 4 filing.

MERCANTILE BANK CORP director Richard D. MacDonald received a grant of 715 shares of Common Stock on May 22, 2026. The shares were awarded at a price of $0.00 per share, indicating a compensation-related grant rather than an open-market purchase. Following this award, he directly holds 3,289 shares of the company’s common stock. This is a routine equity compensation transaction and not a market trade.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider MacDonald Richard D

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	715	$0.00	--

Holdings After Transaction: Common Stock — 3,289 shares (Direct, null)

Footnotes (1)

Key Figures

Shares granted: 715 shares Grant price: $0.00 per share Shares held after grant: 3,289 shares

3 metrics

Shares granted 715 shares Equity award on May 22, 2026

Grant price $0.00 per share Recorded award price for Common Stock

Shares held after grant 3,289 shares Total direct holdings after transaction

Key Terms

Common Stock, Grant, award, or other acquisition, Form 4

3 terms

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

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^*

MacDonald Richard D

(Last) (First) (Middle)

C/O MERCANTILE BANK CORPORATION

310 LEONARD ST. NW

(Street)

GRAND RAPIDS MICHIGAN 49504

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

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

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

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

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	05/22/2026		A		715	A	$0	3,289	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	05/27/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did MERCANTILE BANK CORP (MBWM) disclose for Richard D. MacDonald?

MERCANTILE BANK CORP reported that director Richard D. MacDonald received a grant of 715 shares of Common Stock. The award was recorded on May 22, 2026 and reflects equity-based compensation, not an open-market stock purchase.

Was the MBWM insider transaction a stock purchase or a grant for Richard D. MacDonald?

The MBWM Form 4 shows a grant or award acquisition, not a market purchase. Richard D. MacDonald received 715 shares at a recorded price of $0.00 per share, which is typical for stock-based compensation awards.

How many MERCANTILE BANK CORP (MBWM) shares does Richard D. MacDonald hold after this Form 4?

After the reported transaction, Richard D. MacDonald directly holds 3,289 shares of MBWM Common Stock. This total includes the new grant of 715 shares reported as a compensation-related award on May 22, 2026.

What does the transaction code 'A' mean in the MBWM Form 4 for Richard D. MacDonald?

In this MBWM Form 4, transaction code "A" indicates a grant, award, or other acquisition of Common Stock. Richard D. MacDonald received 715 shares as an equity award, rather than buying or selling shares on the open market.