Stock Purchase Program

Dividend Reinvestment Plan

Shareholders may elect to reinvest their dividends in additional shares of Middlefield Banc Corp.’s common stock through the Company’s Dividend Reinvestment Plan. To arrange automatic purchase of shares with quarterly dividend proceeds, please call 888.801.1666.

Shareholders may also contact Middlefield’s transfer agent Computershare at 800.736.3001, or, for additional information on the Company’s dividend reinvestment plan.