    <SEC-DOCUMENT>0001564590-22-011397-index.html : 20220322
    <SEC-HEADER>0001564590-22-011397.hdr.sgml : 20220322
    <ACCEPTANCE-DATETIME>20220322172023
    ACCESSION NUMBER:		0001564590-22-011397
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20220322
    DATE AS OF CHANGE:		20220322

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GERON CORP
    		CENTRAL INDEX KEY:			0000886744
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				752287752
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-20859
    		FILM NUMBER:		22760725

    	BUSINESS ADDRESS:
    		STREET 1:		919 EAST HILLSDALE BOULEVARD
    		STREET 2:		SUITE 250
    		CITY:			FOSTER CITY
    		STATE:			CA
    		ZIP:			94404
    		BUSINESS PHONE:		6504737700

    	MAIL ADDRESS:
    		STREET 1:		919 EAST HILLSDALE BOULEVARD
    		STREET 2:		SUITE 250
    		CITY:			FOSTER CITY
    		STATE:			CA
    		ZIP:			94404

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	GERON CORPORATION
    		DATE OF NAME CHANGE:	19960521
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>gern-defa14a_20220510.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: gern-defa14a_20220510.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>ghz0c5kdydnl000001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: ghz0c5kdydnl000001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>ghz0c5kdydnl000002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: ghz0c5kdydnl000002.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>