<SEC-DOCUMENT>0000902219-19-000004-index.html : 20190110
<SEC-HEADER>0000902219-19-000004.hdr.sgml : 20190110
<ACCEPTANCE-DATETIME>20190110093700
ACCESSION NUMBER:		0000902219-19-000004
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20190110
DATE AS OF CHANGE:		20190110

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			G1 Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001560241
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				263648180
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-90214
		FILM NUMBER:		19519419

	BUSINESS ADDRESS:	
		STREET 1:		79 T.W. ALEXANDER DRIVE
		STREET 2:		4501 RESEARCH COMMONS, SUITE 100
		CITY:			RESEARCH TRIANGLE PARK
		STATE:			NC
		ZIP:			27709
		BUSINESS PHONE:		919-213-9835

	MAIL ADDRESS:	
		STREET 1:		P. O. BOX # 110341
		CITY:			RESEARCH TRIANGLE PARK
		STATE:			NC
		ZIP:			27709

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	G-Zero Therapeutics, Inc.
		DATE OF NAME CHANGE:	20121012

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WELLINGTON MANAGEMENT GROUP LLP
		CENTRAL INDEX KEY:			0000902219
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				042683227
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		C/O WELLINGTON MANAGEMENT COMPANY LLP
		STREET 2:		280 CONGRESS STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210
		BUSINESS PHONE:		6179515000

	MAIL ADDRESS:	
		STREET 1:		C/O WELLINGTON MANAGEMENT COMPANY LLP
		STREET 2:		280 CONGRESS STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WELLINGTON MANAGEMENT CO LLP
		DATE OF NAME CHANGE:	19960930

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WELLINGTON MANAGEMENT CO
		DATE OF NAME CHANGE:	19930426
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>SEC13G_Filing.htm
<DESCRIPTION>SEC SCHEDULE 13G
<TEXT>
Document 1 - file: SEC13G_Filing.htm

</DOCUMENT>
</SEC-DOCUMENT>