<SEC-DOCUMENT>0001193125-20-059696-index.html : 20200303
<SEC-HEADER>0001193125-20-059696.hdr.sgml : 20200303
<ACCEPTANCE-DATETIME>20200303071603
ACCESSION NUMBER:		0001193125-20-059696
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20200303
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20200303
DATE AS OF CHANGE:		20200303

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sierra Oncology, Inc.
		CENTRAL INDEX KEY:			0001290149
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37490
		FILM NUMBER:		20679934

	BUSINESS ADDRESS:	
		STREET 1:		2150 ? 885 WEST GEORGIA STREET
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6C 3E8
		BUSINESS PHONE:		604-558-6536

	MAIL ADDRESS:	
		STREET 1:		2150 ? 885 WEST GEORGIA STREET
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V6C 3E8

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ProNAi Therapeutics Inc
		DATE OF NAME CHANGE:	20040513
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>d865708d8k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: d865708d8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d865708dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: d865708dex991.htm

</DOCUMENT>
</SEC-DOCUMENT>