    <SEC-DOCUMENT>0001728117-24-000050-index.html : 20240426
    <SEC-HEADER>0001728117-24-000050.hdr.sgml : 20240426
    <ACCEPTANCE-DATETIME>20240426142015
    ACCESSION NUMBER:		0001728117-24-000050
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20240426
    FILED AS OF DATE:		20240426
    DATE AS OF CHANGE:		20240426
    EFFECTIVENESS DATE:		20240426

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Gossamer Bio, Inc.
    		CENTRAL INDEX KEY:			0001728117
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		ORGANIZATION NAME:           	03 Life Sciences
    		IRS NUMBER:				475461709
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38796
    		FILM NUMBER:		24882100

    	BUSINESS ADDRESS:
    		STREET 1:		3013 SCIENCE PARK
    		CITY:			SAN DIEGO
    		STATE:			CA
    		ZIP:			92121
    		BUSINESS PHONE:		(858) 922-0718

    	MAIL ADDRESS:
    		STREET 1:		3013 SCIENCE PARK
    		CITY:			SAN DIEGO
    		STATE:			CA
    		ZIP:			92121
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>goss-20231231xxfinalxforpr.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: goss-20231231xxfinalxforpr.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>