Middlefield Banc Corp (MBCN) Insider Ownership

Historic Ownership Trends

Through the 90-day period concluding December 31, 2025, Middlefield Banc's top three insider stakeholders include Chief Executive Officer Ronald Len Jr. Zimmerly (51.21K shares), Evp Chief Strategy Officer Thomas M Wilson (21.55K shares), Evp/Cfo Michael Ranttila (18.53K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Ronald Len Jr. Zimmerly Chief Executive Officer 51,210 18 Dec, 2025
James R Ii Heslop Chief Executive Officer 37,294 10 Jul, 2023
Darryl E Mast 36,727 02 Jan, 2025
Carolyn J Turk 32,155 02 Jan, 2025
Thomas W Bevan 26,153 02 Jan, 2025
Thomas M Wilson Evp Chief Strategy Officer 21,546 18 Dec, 2025
Thomas G Caldwell President/Chief Executive Offi 21,274 03 Mar, 2022
William J Skidmore 20,337 02 Jan, 2025
Michael Ranttila Evp/Cfo 18,530 18 Dec, 2025
Kenneth E Jones 17,320 02 Jan, 2025
Donald L Stacy Treasurer/Cfo 11,974 01 Mar, 2023
Courtney M Erminio Evp/Chief Risk Officer 7,474 18 Dec, 2025
Rebecca A Noblit Evp Chief Credit Officer 7,209 18 Dec, 2025
Charles O Moore President And Central Ohio Region 6,055 03 Mar, 2022
Robert W Toth 5,785 06 Jan, 2021
Clayton W Iii Rose 5,623 02 Jul, 2021
James J Mccaskey 5,524 02 Jan, 2025
Kevin A Digeronimo 4,666 27 Mar, 2025
Michael L Cheravitch Evp Chief Banking Officer 4,295 18 Dec, 2025
Sarah A Winters Evp/Chro 4,292 18 Dec, 2025
Michael C Voinovich 3,891 02 Jan, 2025
Michael L Allen Evp Chief Banking Officer 3,033 01 Mar, 2023
Jennifer L Moeller 2,077 02 Jan, 2025
Alfred F Jr Thompson Evp/Chief Credit Officer 1,891 01 Mar, 2023

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
17 Dec, 2025 Michael L Cheravitch Common Stock A 5,204 $37.00 5,809 D A
17 Dec, 2025 Courtney M Erminio Common Stock A 2,035 $37.00 6,472 D A
17 Dec, 2025 Michael Ranttila Common Stock A 3,558 $37.00 9,729 D A
17 Dec, 2025 Rebecca A Noblit Common Stock A 676 $37.00 7,402 D A
17 Dec, 2025 Ronald Len Jr. Zimmerly Common Stock A 4,653 $37.00 43,169 D A
17 Dec, 2025 Sarah A Winters Common Stock A 5,204 $37.00 5,809 D A
17 Dec, 2025 Thomas M Wilson Common Stock A 1,651 $37.00 9,528 D A
17 Dec, 2025 Michael Ranttila Common Stock A 12,713 $37.00 22,442 D A
17 Dec, 2025 Ronald Len Jr. Zimmerly Common Stock A 10,161 $37.00 53,330 D A
17 Dec, 2025 Michael L Cheravitch Common Stock D 1,514 $37.00 4,295 D F
17 Dec, 2025 Thomas M Wilson Common Stock D 480 $37.00 9,048 D F
17 Dec, 2025 Rebecca A Noblit Common Stock D 193 $37.00 7,209 D F
17 Dec, 2025 Sarah A Winters Common Stock D 1,517 $37.00 4,292 D F
17 Dec, 2025 Courtney M Erminio Common Stock A 2,204 $37.00 8,676 D A
17 Dec, 2025 Michael Ranttila Common Stock D 3,962 $37.00 18,480 D F
17 Dec, 2025 Ronald Len Jr. Zimmerly Common Stock D 4,126 $37.00 49,204 D F
17 Dec, 2025 Courtney M Erminio Common Stock D 1,202 $37.00 7,474 D F
01 Dec, 2025 Ronald Len Jr. Zimmerly Common Stock A 3,788 $34.82 39,628 D A
01 Dec, 2025 Ronald Len Jr. Zimmerly Common Stock D 1,112 $34.82 38,516 D F
06 Aug, 2025 Ronald Len Jr. Zimmerly Common Stock A 2,260 $27.11 36,503 D A