Key facts
- This page summarizes Sarah A. Winters's Form 4 filing for MIDDLEFIELD BANC CORP (MBCN).
- 2 reported transactions and 2 derivative rows are listed below.
- Accepted by SEC: 16 Jan 2026, 10:18.
Sarah A. Winters - 14 Jan 2026 Form 4 Insider Report for MIDDLEFIELD BANC CORP (MBCN)
- Reporting relationship
- EVP/CHRO
- Issuer ticker
- MBCN
- Reported as of
- 14 Jan 2026
- Net transaction value
- +$21,321
- SEC form
- 4
- Accepted by SEC
- 16 Jan 2026, 10:18:44 UTC
- Prior SEC filing
- 18 Dec 2025
- Next SEC filing
- 25 Feb 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Sarah A. Winters by Julie E. Shaw Power of Attorney
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Sarah A. Winters filed Form 4 for MIDDLEFIELD BANC CORP (MBCN) on 16 Jan 2026.
Change
- Previous filing in this sequence was filed on 18 Dec 2025.
- Current net transaction value: +$21,321.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0002008413
Primary reporting owner
Winters Sarah A
- Relationship
- EVP/CHRO
- Address
- 15985 EAST HIGH STREET, MIDDLEFIELD
- Signature
- /s/ Sarah A. Winters by Julie E. Shaw Power of Attorney
- Signature date
- 16 Jan 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
MBCN
transaction
Common Stock
Award
- Transaction value
- $32,499
- Shares
- +942
- Change %
- +22%
- Price
- $34.50
- Shares after
- 5,234
- Date
- 14 Jan 2026
- Ownership
- Direct
- Footnotes
- F1
MBCN
transaction
Common Stock
Tax liability
- Transaction value
- $11,178
- Shares
- -324
- Change %
- -6.2%
- Price
- $34.50
- Shares after
- 4,910
- Date
- 14 Jan 2026
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
MBCN
holding
Derivative
Conditional Stock Award
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,708
- Date
- 14 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,708
- Exercise price
- Footnotes
- F3, F4
MBCN
holding
Derivative
Conditional Stock Award
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,886
- Date
- 14 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,886
- Exercise price
- Footnotes
- F2, F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 4 footnotes
Footnote 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.
Footnote F2
The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mrs. Winters 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.
Footnote F3
Each restricted stock unit represents the right to receive, at settlement, one share of common stock.
Footnote F4
The award represents a grant of restricted stock which vests ratably over a three-year period provided that Mrs. Winters 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 September 4, 2024.