    <SEC-DOCUMENT>0001140361-23-020926-index.html : 20230427
    <SEC-HEADER>0001140361-23-020926.hdr.sgml : 20230427
    <ACCEPTANCE-DATETIME>20230427160850
    ACCESSION NUMBER:		0001140361-23-020926
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20230427
    DATE AS OF CHANGE:		20230427

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Lyell Immunopharma, Inc.
    		CENTRAL INDEX KEY:			0001806952
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				833006753
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-40502
    		FILM NUMBER:		23856875

    	BUSINESS ADDRESS:
    		STREET 1:		201 HASKINS WAY
    		CITY:			SOUTH SAN FRANCISCO
    		STATE:			CA
    		ZIP:			94080
    		BUSINESS PHONE:		650 695-0677

    	MAIL ADDRESS:
    		STREET 1:		201 HASKINS WAY
    		CITY:			SOUTH SAN FRANCISCO
    		STATE:			CA
    		ZIP:			94080
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>ny20007748x2_defa14a.htm
    <DESCRIPTION>FORM DEFA14A
    <TEXT>
    Document 1 - file: ny20007748x2_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>ny20007748x2_nc1.jpg
    <TEXT>
    Document 2 - file: ny20007748x2_nc1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>ny20007748x2_nc2.jpg
    <TEXT>
    Document 3 - file: ny20007748x2_nc2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>