X0306 4 2022-03-01 0 0000836147 MIDDLEFIELD BANC CORP MBCN 0001223992 THOMPSON ALFRED F JR 15985 E. HIGH STREET MIDDLEFIELD OH 44302 0 1 0 0 EVP/Chief Credit Officer Common Stock 2022-03-01 4 A 0 407 25.52 A 1865.795 D Common Stock 2022-03-01 4 F 0 105 25.52 D 1760.795 D Common Stock 326.516 D Conditional Stock Award 24.80 2025-02-23 Common Stock 1713 1713 D Conditional Stock Award 22.50 2024-02-23 Common Stock 453 453 D Conditional Stock Award 26.09 2023-02-25 Common Stock 379 379 D Acquisition represents the vesting of performance shares granted to the reporting person on March 1, 2019, which vested on the third anniversary of their grant date based upon the Company's total shareholder return. Includes shares acquired under MBCN Dividend Reinvestment Plan. Includes shares held jointly with spouse. Until the award vests, the award confers no right to vote, no right to dividends, and no other shareholder rights to the recipient. Vesting is subject to a time-based or service condition and a performance-based condition. The details of the vesting conditions may be found in a Form 8-K filing dated February 25, 2022. Until the award vests, the award confers no right to vote, no right to dividends, and no other shareholder rights to the recipient. Vesting is subject to a time-based or service condition and a performance-based condition. The details of the vesting conditions may be found in a Form 8-K filing dated February 25, 2021. Until the award vests, the award confers no right to vote, no right to dividends, and no other shareholder rights to the recipient. Vesting is subject to a time-based or service condition and a performance-based condition. The details of the vesting conditions may be found in a Form 8-K filing dated February 26, 2020. Alfred F. Thompson, Jr. by Julie E. Shaw Power of Attorney 2022-03-29