<SEC-DOCUMENT>0001171843-18-005559-index.html : 20180731
<SEC-HEADER>0001171843-18-005559.hdr.sgml : 20180731
<ACCEPTANCE-DATETIME>20180731153233
ACCESSION NUMBER:		0001171843-18-005559
CONFORMED SUBMISSION TYPE:	10-K/A
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20171231
FILED AS OF DATE:		20180731
DATE AS OF CHANGE:		20180731

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			XBiotech Inc.
		CENTRAL INDEX KEY:			0001626878
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A1
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37347
		FILM NUMBER:		18980978

	BUSINESS ADDRESS:	
		STREET 1:		8201 E. RIVERSIDE DRIVE
		STREET 2:		BUILDING 4, SUITE 100
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78744
		BUSINESS PHONE:		512-386-2930

	MAIL ADDRESS:	
		STREET 1:		8201 E. RIVERSIDE DRIVE
		STREET 2:		BUILDING 4, SUITE 100
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78744
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-K/A
<SEQUENCE>1
<FILENAME>f10ka_080118.htm
<DESCRIPTION>FORM 10-K/A
<TEXT>
Document 1 - file: f10ka_080118.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>2
<FILENAME>exh_311.htm
<DESCRIPTION>EXHIBIT 31.1
<TEXT>
Document 2 - file: exh_311.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>exh_312.htm
<DESCRIPTION>EXHIBIT 31.2
<TEXT>
Document 3 - file: exh_312.htm

</DOCUMENT>
</SEC-DOCUMENT>