<SEC-DOCUMENT>0001209191-18-021232.txt : 20180322
<SEC-HEADER>0001209191-18-021232.hdr.sgml : 20180322
<ACCEPTANCE-DATETIME>20180322153433
ACCESSION NUMBER:		0001209191-18-021232
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180320
FILED AS OF DATE:		20180322
DATE AS OF CHANGE:		20180322

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MacAdam Donald H.
		CENTRAL INDEX KEY:			0001735261

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37347
		FILM NUMBER:		18706863

	MAIL ADDRESS:	
		STREET 1:		56 KELLY DRIVE
		CITY:			PORT DOVER
		STATE:			A6
		ZIP:			N0A 1N5

ISSUER:		

	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

	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>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-03-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001626878</issuerCik>
        <issuerName>XBiotech Inc.</issuerName>
        <issuerTradingSymbol>XBIT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001735261</rptOwnerCik>
            <rptOwnerName>MacAdam Donald H.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>56 KELLY DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PORT DOVER</rptOwnerCity>
            <rptOwnerState>A6</rptOwnerState>
            <rptOwnerZipCode>N0A 1N5</rptOwnerZipCode>
            <rptOwnerStateDescription>ONTARIO, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Director Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.78</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-03-20</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2018-09-20</value>
            </exerciseDate>
            <expirationDate>
                <value>2028-03-20</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>25000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes></footnotes>

    <remarks>Upon election as a Board Member and pursuant to the Board Member Agreement in place between Donald H. MacAdam (the &quot;Reporting Person&quot;) and the Company, the Reporting Person was granted non-qualified stock options to purchase 25,000 shares of the Company's common stock on March 20, 2018 (the &quot;Grant Date&quot;). All granted options will be exercisable at a price equal to the closing price of the Company's common stock, as reported by NASDAQ, on the Grant Date, and vest in two equal installments occurring six months and 12 months following the Grant Date, subject to continued service as a Director. The Options shall expire ten years from the Grant Date, unless terminated earlier in accordance with the Plan or the Reporting Person's stock option agreement. In accordance with the Plan, the Options will remain exercisable for 90 days after the date of the Reporting Person's termination without cause or resignation.</remarks>

    <ownerSignature>
        <signatureName>/s/ Ashley Otero under Power of Attorney for Donald H. MacAdam</signatureName>
        <signatureDate>2018-03-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
