MIDDLEFIELD BANC CORP — Director's Dealing 2025

Aug 7, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MIDDLEFIELD BANC CORP (MBCN)
CIK: 0000836147
Period of Report: 2025-08-06

Reporting Person: Wilson Thomas M (EVP-Chief Strategy Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-08-06	Common Stock	A	853	$27.11	Acquired	8138	Direct
2025-08-06	Common Stock	F	261	$27.11	Disposed	7877	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	12498	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Conditional Stock Award	$	2028-01-14	Common Stock (2685)	2685	Direct
Conditional Stock Award	$	2027-09-06	Common Stock (1708)	1708	Direct
Conditional Stock Award	$27.4000	2026-03-10	Common Stock (1321)	1321	Direct

Footnotes

F1: The acquisition represents the vesting of restricted stock granted to the reporting person on August 6, 2024. The shares vested on the first anniversary of the grant date.

F2: The award represents grant of restricted stock which vests ratably over a three-year period provided that Mr. Wilson remains continuously employed by Middlefield as of each vesting date. Until the award vests, the award confers no right to vote, no right to dividends, and no other shareholder rights to the recipient. The details of the vesting conditions may be found in a Form 8K filing dated January 17, 2025

F3: Each restricted stock unit represents the right to receive, at settlement, one share of common stock.

F4: The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mr. Wilson remains continuously employed by Middlefield as of each vesting date. Until the award vests, the award confers no right to vote, no right to dividends, and no other shareholder rights to the recipient. The details of the vesting conditions may be found in a Form 8K filed dated September 4, 2025.

F5: Until the award vests, the award confers no right to vote, no right to dividends, and no other shareholder rights to the recipient. Vesting is subject to a time-based or service condition and a performance-based condition. The details of the vesting conditions may be found in a Form 8K filing dated March 17, 2023.