<SEC-DOCUMENT>0001728117-26-000027-index.html : 20260424
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<ACCEPTANCE-DATETIME>20260424160121
ACCESSION NUMBER:		0001728117-26-000027
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		20
CONFORMED PERIOD OF REPORT:	20260424
FILED AS OF DATE:		20260424
DATE AS OF CHANGE:		20260424

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Gossamer Bio, Inc.
		CENTRAL INDEX KEY:			0001728117
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				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:		26893450

	BUSINESS ADDRESS:	
		STREET 1:		3115 MERRYFIELD ROW
		STREET 2:		SUITE 120
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		(858) 684-1300

	MAIL ADDRESS:	
		STREET 1:		3115 MERRYFIELD ROW
		STREET 2:		SUITE 120
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>goss-20260423.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: goss-20260423.htm
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</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>3 <FILENAME>goss-20260423_def.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT <TEXT> Document 3 - file: goss-20260423_def.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>4 <FILENAME>goss-20260423_lab.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT <TEXT> Document 4 - file: goss-20260423_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>5 <FILENAME>goss-20260423_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT <TEXT> Document 5 - file: goss-20260423_pre.xml
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</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>17 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 17 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>19 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 19 - file: FilingSummary.html
Document 19 - RAW XML: FilingSummary.xml
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</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>22 <FILENAME>0001728117-26-000027-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 22 - file: 0001728117-26-000027-xbrl.zip
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Document 23 - RAW XML: goss-20260423_htm.xml
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