Michael C. Voinovich - 23 Feb 2026 Form 4 Insider Report for MIDDLEFIELD BANC CORP (MBCN)

Role: Director
Signature: /s/ Michael C. Voinovich by Julie E. Shaw Power of Attorney
Issuer symbol: MBCN
Transactions as of: 23 Feb 2026
Net transactions value: +$14,248
Form type: 4
Filing time: 25 Feb 2026, 17:14:25 UTC
Previous filing: 07 Jan 2026
Next filing: 10 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Voinovich Michael C	Director	15985 EAST HIGH STREET, MIDDLEFIELD	/s/ Michael C. Voinovich by Julie E. Shaw Power of Attorney	25 Feb 2026	0001806753

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MBCN	Common Stock	Award	$14,248	+405	+13%	$35.18	3,527	23 Feb 2026	Direct	F1, F2
holding	MBCN	Common Stock						9,253	23 Feb 2026	held in IRA	F1
holding	MBCN	Common Stock						769	23 Feb 2026	held in IRA	F1
holding	MBCN	Common Stock						1,500	23 Feb 2026	held in IRA (McD)
holding	MBCN	Common Stock						2,402	23 Feb 2026	held in Roth IRA	F1
holding	MBCN	Common Stock						8,965	23 Feb 2026	held in Rabbi Trust

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes shares acquired under MBCN Dividend Reinvestment Plan
F2	The shares represent accelerated vesting of restricted stock units (RSUs) granted on June 27, 2025. On February 23, 2026, the Compensation Committee of Middlefield's Board of Directors approved the full vesting of all outstanding plan share awards, including the RSUs. For further information regarding the acceleration of the RSUs, please see the Form 8-K Current Report filed by Middlefield with the SEC on February 25, 2026.

Content

Includes shares acquired under MBCN Dividend Reinvestment Plan

The shares represent accelerated vesting of restricted stock units (RSUs) granted on June 27, 2025. On February 23, 2026, the Compensation Committee of Middlefield's Board of Directors approved the full vesting of all outstanding plan share awards, including the RSUs. For further information regarding the acceleration of the RSUs, please see the Form 8-K Current Report filed by Middlefield with the SEC on February 25, 2026.