Mark S. Augustyn - 12 Dec 2025 Form 4 Insider Report for MERCANTILE BANK CORP (MBWM)

Role
EVP&Chief Comm Banking Officer
Signature
/s/ Bradley J. Wyatt, Attorney-in-Fact
Issuer symbol
MBWM
Transactions as of
12 Dec 2025
Net transactions value
-$72,246
Form type
4
Filing time
09 Feb 2026, 18:11:35 UTC
Previous filing
10 Feb 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Augustyn Mark S EVP&Chief Comm Banking Officer C/O MERCANTILE BANK CORPORATION, 310 LEONARD ST. NW, GRAND RAPIDS /s/ Bradley J. Wyatt, Attorney-in-Fact 09 Feb 2026 0002050906

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MBWM Common Stock Gift $0 -2,022 -6.4% $0.000000 29,648 12 Dec 2025 Direct
transaction MBWM Common Stock Tax liability $72,246 -1,461 -4.9% $49.45 28,187 19 Dec 2025 Direct
transaction MBWM Common Stock Award $0 +2,875 +10% $0.000000 31,602 05 Feb 2026 Direct F1
transaction MBWM Common Stock Award $0 +1,437 +4.6% $0.000000 32,499 05 Feb 2026 Direct
holding MBWM Common Stock 258 12 Dec 2025 In IRA
holding MBWM Common Stock 268 12 Dec 2025 By spouse in IRA
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This award of shares is being made pursuant to the Issuer's performance-based restricted stock award agreement, such that a portion or all of this award of restricted stock may be forfeited in the future if certain performance metrics are not met.