    <SEC-DOCUMENT>0001140361-23-020959-index.html : 20230427
    <SEC-HEADER>0001140361-23-020959.hdr.sgml : 20230427
    <ACCEPTANCE-DATETIME>20230427162038
    ACCESSION NUMBER:		0001140361-23-020959
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20230427
    DATE AS OF CHANGE:		20230427

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Compass Therapeutics, Inc.
    		CENTRAL INDEX KEY:			0001738021
    		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-39696
    		FILM NUMBER:		23857295

    	BUSINESS ADDRESS:
    		STREET 1:		80 GUEST STREET
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02135
    		BUSINESS PHONE:		617-500-8099

    	MAIL ADDRESS:
    		STREET 1:		80 GUEST STREET
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02135

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Olivia Ventures, Inc.
    		DATE OF NAME CHANGE:	20180419
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>ny20008153x2_defa14a.htm
    <DESCRIPTION>FORM DEFA14A
    <TEXT>
    Document 1 - file: ny20008153x2_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>ny20008153x2_nc1.jpg
    <TEXT>
    Document 2 - file: ny20008153x2_nc1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>ny20008153x2_nc2.jpg
    <TEXT>
    Document 3 - file: ny20008153x2_nc2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>