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    <ACCEPTANCE-DATETIME>20220425162207
    ACCESSION NUMBER:		0001104659-22-049655
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20220608
    FILED AS OF DATE:		20220425
    DATE AS OF CHANGE:		20220425

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SELLAS Life Sciences Group, Inc.
    		CENTRAL INDEX KEY:			0001390478
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-33958
    		FILM NUMBER:		22849953

    	BUSINESS ADDRESS:
    		STREET 1:		7 TIMES SQUARE
    		STREET 2:		SUITE 2503
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10036
    		BUSINESS PHONE:		6462005278

    	MAIL ADDRESS:
    		STREET 1:		7 TIMES SQUARE
    		STREET 2:		SUITE 2503
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10036

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Galena Biopharma, Inc.
    		DATE OF NAME CHANGE:	20110926

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	RXi Pharmaceuticals Corp
    		DATE OF NAME CHANGE:	20110926

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	GALENA BIOPHARMA, INC.
    		DATE OF NAME CHANGE:	20110922
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>tm223704-1_def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: tm223704-1_def14a.htm

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    <TYPE>GRAPHIC
    <SEQUENCE>2
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: lg_sellaslifesciences-4clr.jpg

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    <SEQUENCE>3
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: sg_angelosmstergiou-bw.jpg

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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: sg_barbaraawood-bw.jpg

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    <SEQUENCE>5
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: tm223704d1-icon_internetbw.jpg

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    <SEQUENCE>6
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: tm223704d1-icon_mailbw.jpg

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    <TEXT>
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    <SEQUENCE>8
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    <DESCRIPTION>GRAPHIC
    <TEXT>
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    <SEQUENCE>9
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    <SEQUENCE>10
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: tm223704d1-pxy_proxy34c.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>tm223704d1-pxy_proxy44c.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: tm223704d1-pxy_proxy44c.jpg

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