<SEC-DOCUMENT>0000898432-17-001046-index.html : 20171115
<SEC-HEADER>0000898432-17-001046.hdr.sgml : 20171115
<ACCEPTANCE-DATETIME>20171115174050
ACCESSION NUMBER:		0000898432-17-001046
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171115
FILED AS OF DATE:		20171115
DATE AS OF CHANGE:		20171115

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Bill & Melinda Gates Foundation
		CENTRAL INDEX KEY:			0001663801
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38295
		FILM NUMBER:		171206147

	BUSINESS ADDRESS:	
		STREET 1:		500 5TH AVE NORTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98109
		BUSINESS PHONE:		206-709-3100

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 23350
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98102

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Arsanis, Inc.
		CENTRAL INDEX KEY:			0001501697
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				273181608
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		890 WINTER STREET, SUITE 230
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		781-819-5704

	MAIL ADDRESS:	
		STREET 1:		890 WINTER STREET, SUITE 230
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>form3.xml
<TEXT>
Document 1 - file: form3.html

Document 1 - RAW XML: form3.xml

</DOCUMENT>
</SEC-DOCUMENT>