Courtney M. Erminio - 14 Jan 2026 Form 4 Insider Report for MIDDLEFIELD BANC CORP (MBCN)

Role
EVP/Chief Risk Officer
Signature
/s/ Courtney M. Erminio by Julie E. Shaw Power of Attorney
Issuer symbol
MBCN
Transactions as of
14 Jan 2026
Net transactions value
+$21,562
Form type
4
Filing time
16 Jan 2026, 09:36:35 UTC
Previous filing
18 Dec 2025
Next filing
25 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Erminio Courtney M EVP/Chief Risk Officer 15985 EAST HIGH STREET, MIDDLEFIELD /s/ Courtney M. Erminio by Julie E. Shaw Power of Attorney 16 Jan 2026 0001698885

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MBCN Common Stock Award $32,499 +942 +13% $34.50 8,416 14 Jan 2026 Direct F1, F2
transaction MBCN Common Stock Tax liability $10,936 -317 -3.8% $34.50 8,099 14 Jan 2026 Direct F2
holding MBCN Common Stock 151 14 Jan 2026 Direct F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding MBCN Conditional Stock Award 1,708 14 Jan 2026 Common Stock 1,708 Direct F4, F6
holding MBCN Conditional Stock Award 1,886 14 Jan 2026 Common Stock 1,886 Direct F5, F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 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.
F2 Includes shares acquired under MBCN Dividend Reinvestment Plan
F3 Includes shares held jointly with spouse.
F4 The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mrs. Erminio 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 8-K dated September 4, 2024.
F5 The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mrs. Erminio 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 8-K dated January 17, 2025.
F6 Each restricted stock unit represents the right to receive, at settlement, one share of common stock.