    <SEC-DOCUMENT>0001193125-22-048683-index.html : 20220222
    <SEC-HEADER>0001193125-22-048683.hdr.sgml : 20220222
    <ACCEPTANCE-DATETIME>20220222170147
    ACCESSION NUMBER:		0001193125-22-048683
    CONFORMED SUBMISSION TYPE:	S-4
    PUBLIC DOCUMENT COUNT:		9
    FILED AS OF DATE:		20220222
    DATE AS OF CHANGE:		20220222

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CIVISTA BANCSHARES, INC.
    		CENTRAL INDEX KEY:			0000944745
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				341558688
    		STATE OF INCORPORATION:			OH
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		S-4
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-262907
    		FILM NUMBER:		22659172

    	BUSINESS ADDRESS:
    		STREET 1:		100 EAST WATER ST
    		STREET 2:		P O BOX 5016
    		CITY:			SANDUSKY
    		STATE:			OH
    		ZIP:			44870
    		BUSINESS PHONE:		4196254121

    	MAIL ADDRESS:
    		STREET 1:		100 EAST WATER ST
    		STREET 2:		P O BOX 5016
    		CITY:			SANDUSKY
    		STATE:			OH
    		ZIP:			44870

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FIRST CITIZENS BANC CORP /OH
    		DATE OF NAME CHANGE:	19950502
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>S-4
    <SEQUENCE>1
    <FILENAME>d287973ds4.htm
    <DESCRIPTION>FORM S-4
    <TEXT>
    Document 1 - file: d287973ds4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-5.1
    <SEQUENCE>2
    <FILENAME>d287973dex51.htm
    <DESCRIPTION>EX-5.1
    <TEXT>
    Document 2 - file: d287973dex51.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23.1
    <SEQUENCE>3
    <FILENAME>d287973dex231.htm
    <DESCRIPTION>EX-23.1
    <TEXT>
    Document 3 - file: d287973dex231.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-25.1
    <SEQUENCE>4
    <FILENAME>d287973dex251.htm
    <DESCRIPTION>EX-25.1
    <TEXT>
    Document 4 - file: d287973dex251.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>5
    <FILENAME>d287973dex991.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 5 - file: d287973dex991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-FILING FEES
    <SEQUENCE>6
    <FILENAME>d287973dexfilingfees.htm
    <DESCRIPTION>EX-FILING FEES
    <TEXT>
    Document 6 - file: d287973dexfilingfees.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g287973g54g82.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g287973g54g82.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g287973g65a55.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g287973g65a55.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g287973g66a99.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g287973g66a99.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>