<SEC-DOCUMENT>0001564590-20-018824-index.html : 20200427
<SEC-HEADER>0001564590-20-018824.hdr.sgml : 20200427
<ACCEPTANCE-DATETIME>20200427161552
ACCESSION NUMBER:		0001564590-20-018824
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20200617
FILED AS OF DATE:		20200427
DATE AS OF CHANGE:		20200427
EFFECTIVENESS DATE:		20200427

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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38796
		FILM NUMBER:		20820142

	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>DEF 14A
<SEQUENCE>1
<FILENAME>goss-def14a_20200617.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: goss-def14a_20200617.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>gc4ahawjc1ya000003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: gc4ahawjc1ya000003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>gc4ahawjc1ya000002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: gc4ahawjc1ya000002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>gc4ahawjc1ya000004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: gc4ahawjc1ya000004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>gc4ahawjc1ya000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: gc4ahawjc1ya000001.jpg

</DOCUMENT>
</SEC-DOCUMENT>