<SEC-DOCUMENT>0001728117-21-000045-index.html : 20210427
<SEC-HEADER>0001728117-21-000045.hdr.sgml : 20210427
<ACCEPTANCE-DATETIME>20210427161844
ACCESSION NUMBER:		0001728117-21-000045
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20210427
DATE AS OF CHANGE:		20210427

FILER:

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

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38796
		FILM NUMBER:		21859170

	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>DEFA14A
<SEQUENCE>1
<FILENAME>goss-20210609xdefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: goss-20210609xdefa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>goss-naaproofv3_pagex11.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: goss-naaproofv3_pagex11.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>goss-naaproofv3_pagex21.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: goss-naaproofv3_pagex21.jpg

</DOCUMENT>
</SEC-DOCUMENT>