-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 GDy209z/P8a9dTN/WZXHLESaHnX96HlW9mdrccdFZNul5kYJFFs93wYDevPinru6
 eihx3IwKsf7M7rsmMapnGA==

<SEC-DOCUMENT>0001457395-10-000001.txt : 20100929
<SEC-HEADER>0001457395-10-000001.hdr.sgml : 20100929
<ACCEPTANCE-DATETIME>20100929184032
ACCESSION NUMBER:		0001457395-10-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100928
FILED AS OF DATE:		20100929
DATE AS OF CHANGE:		20100929

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Karan Shashi K.
		CENTRAL INDEX KEY:			0001457395

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33882
		FILM NUMBER:		101097612

	MAIL ADDRESS:	
		STREET 1:		2601 FOURTH AVENUE
		STREET 2:		SUITE 500
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98121

	FORMER NAME:	
		FORMER CONFORMED NAME:	Karan Shashi
		DATE OF NAME CHANGE:	20090227

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Oncothyreon Inc.
		CENTRAL INDEX KEY:			0001412067
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
		IRS NUMBER:				260868560
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0612

	BUSINESS ADDRESS:	
		STREET 1:		2601 FOURTH AVENUE
		STREET 2:		SUITE 500
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98121
		BUSINESS PHONE:		(206) 801-2100

	MAIL ADDRESS:	
		STREET 1:		2601 FOURTH AVENUE
		STREET 2:		SUITE 500
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98121

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Biomira CORP
		DATE OF NAME CHANGE:	20070911
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-09-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001412067</issuerCik>
        <issuerName>Oncothyreon Inc.</issuerName>
        <issuerTradingSymbol>ONTY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001457395</rptOwnerCik>
            <rptOwnerName>Karan Shashi K.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2601 FOURTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 500</rptOwnerStreet2>
            <rptOwnerCity>SEATTLE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98121</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Corporate Controller</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-09-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5100</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.4139</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10100</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The &quot;Amount&quot; and &quot;Price&quot; reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares acquired.  These shares were purchased in multiple transactions ranging from $3.40 to $3.42, inclusive.  The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth herein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Barbara A. Mery, attorney-in-fact on behalf of Shashi K. Karan</signatureName>
        <signatureDate>2010-09-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----