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    <ACCEPTANCE-DATETIME>20180731070005
    ACCESSION NUMBER:		0001193125-18-232280
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		22
    CONFORMED PERIOD OF REPORT:	20180731
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180731
    DATE AS OF CHANGE:		20180731

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MIDDLEFIELD BANC CORP
    		CENTRAL INDEX KEY:			0000836147
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				341585111
    		STATE OF INCORPORATION:			OH

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-36613
    		FILM NUMBER:		18979362

    	BUSINESS ADDRESS:
    		STREET 1:		15985 E HIGH ST
    		STREET 2:		P O BOX 35
    		CITY:			MIDDLEFILED
    		STATE:			OH
    		ZIP:			44062-9263
    		BUSINESS PHONE:		4406321666

    	MAIL ADDRESS:
    		STREET 1:		15985 EAST HIGH STREET
    		STREET 2:		P O BOX 35
    		CITY:			MIDDLEFIELD
    		STATE:			OH
    		ZIP:			44062-9263
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