<SEC-DOCUMENT>0001564590-20-016262-index.html : 20200410
<SEC-HEADER>0001564590-20-016262.hdr.sgml : 20200410
<ACCEPTANCE-DATETIME>20200410163300
ACCESSION NUMBER:		0001564590-20-016262
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20200410
DATE AS OF CHANGE:		20200410
EFFECTIVENESS DATE:		20200410

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:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-237639
		FILM NUMBER:		20786962

	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>S-3ASR
<SEQUENCE>1
<FILENAME>goss-s3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: goss-s3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.4
<SEQUENCE>2
<FILENAME>goss-ex44_24.htm
<DESCRIPTION>EX-4.4
<TEXT>
Document 2 - file: goss-ex44_24.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>goss-ex51_89.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 3 - file: goss-ex51_89.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>4
<FILENAME>goss-ex231_36.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 4 - file: goss-ex231_36.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g521hergp0so000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g521hergp0so000001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>gdgzgd0otps1000001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: gdgzgd0otps1000001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g521hergp0so000002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g521hergp0so000002.jpg

</DOCUMENT>
</SEC-DOCUMENT>