RANTTILA MICHAEL 4

4 · MIDDLEFIELD BANC CORP · Filed Jan 16, 2026

Form 4

Period: 2026-01-14

EVP/CFO

Transactions

Holdings

Common Stock
(indirect: as Custodian for Grandson)
50
Common Stock
(indirect: By IRA)
300
Conditional Stock Award
[F3][F5]
Exp: 2027-08-30→ Common Stock (3,014 underlying)
3,014
Conditional Stock Award
[F4][F5]
Exp: 2028-01-14→ Common Stock (2,956 underlying)
2,956

Footnotes (5)

[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]The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mr. Ranttila 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.
[F4]The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mr. Ranttila 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 filing dated January 17, 2025.
[F5]Each restricted stock unit represents the right to receive, at settlement, one share of common stock.

Signature

/s/ Michael C. Ranttila by Julie E. Shaw Power of Attorney|2026-01-16

Documents

1 file