[Form 4] MIDDLEFIELD BANC CORP Insider Trading Activity

Rhea-AI Filing Summary

Middlefield Banc Corp EVP-Chief Banking Officer Michael L. Cheravitch reported routine equity compensation activity. On January 14, 2026, he acquired 876 shares of common stock at $34.50 per share through the vesting of restricted stock granted on January 14, 2025. On the same date, 301 shares at $34.50 per share were withheld (coded "F") to cover taxes, leaving him with 6,500 common shares held directly.

He also holds two outstanding conditional stock awards. One covers 1,708 shares of common stock scheduled to vest by September 6, 2027, and another covers 1,754 shares scheduled to vest by January 14, 2028. These restricted stock awards vest ratably over three years, and until vesting they carry no voting, dividend, or other shareholder rights.

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

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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^*

Cheravitch Michael L

(Last) (First) (Middle)

15985 EAST HIGH STREET

(Street)

MIDDLEFIELD OH 44062

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MIDDLEFIELD BANC CORP [ MBCN ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP-Chief Banking Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/14/2026

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	01/14/2026		A(1)		876	A	$34.5	6,801	D
Common Stock	01/14/2026		F		301	D	$34.5	6,500	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
Conditional Stock Award(2)	(4)							(2)	09/06/2027	Common Stock	1,708		1,708	D
Conditional Stock Award(3)	(4)							(3)	01/14/2028	Common Stock	1,754		1,754	D

Explanation of Responses:

1. The acquisition represents the vesting of restricted stock granted to the reporting person on January 14, 2025. The shares vested on the first anniversary of the grant.

2. The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mr. Cheravitch 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 vesting details may be found on a Form 8-K filed September 4, 2024.

3. The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mr. Cheravitch 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 vesting details may be found on a Form 8-K filed January 17, 2025.

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

	/s/ Michael L. Cheravitch by Julie E. Shaw Power of Attorney	01/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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