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: DiGeronimo Kevin A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-03-02	Common Stock	D	5071	—	Disposed	0	Direct

Footnotes

F1: 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 (the "Closing Date"). Pursuant to the Agreement each share of Middlefield common stock issued and outstanding immediately prior to the effective time of the Merger (the "Effective Time") (other than certain shares held by Middlefield or Farmers) was converted into the right to receive 2.6 shares (the "Exchange Ration") of Farmers common stock.