MIDDLEFIELD BANC CORP — Director's Dealing 2026

Mar 2, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MIDDLEFIELD BANC CORP (MBCN)
CIK: 0000836147
Period of Report: 2026-03-02

Reporting Person: Erminio Courtney M (EVP/Chief Risk Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-03-02	Common Stock	D	150.525	—	Disposed	0	Direct
2026-03-02	Common Stock	D	19931.991	—	Disposed	0	Direct

Footnotes

F1: Includes shares held jointly with spouse.

F2: Disposed of pursuant to the Agreement and Plan of Merger, dated October 22, 2025 (the "Agreement"), by and between Middlefield Banc Corp. ("Middlefield") and Farmers National Banc Corp. ("Farmers"), pursuant when Middlefield merged with and into Farmers on March 2, 2026.