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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001072613-10-001099.txt : 20101223
<SEC-HEADER>0001072613-10-001099.hdr.sgml : 20101223
<ACCEPTANCE-DATETIME>20101223145238
ACCESSION NUMBER:		0001072613-10-001099
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20101214
FILED AS OF DATE:		20101223
DATE AS OF CHANGE:		20101223

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Prinn Michael
		CENTRAL INDEX KEY:			0001508765

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33567
		FILM NUMBER:		101272011

	MAIL ADDRESS:	
		STREET 1:		C/O BRIDGELINE DIGITAL, INC.
		STREET 2:		10 SIXTH ROAD
		CITY:			WOBURN
		STATE:			MA
		ZIP:			01801

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Bridgeline Digital, Inc.
		CENTRAL INDEX KEY:			0001378590
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				522263942
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		10 SIXTH ROAD
		CITY:			WOBURN
		STATE:			MA
		ZIP:			01801
		BUSINESS PHONE:		781 376 5555

	MAIL ADDRESS:	
		STREET 1:		10 SIXTH ROAD
		CITY:			WOBURN
		STATE:			MA
		ZIP:			01801

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Bridgeline Software, Inc.
		DATE OF NAME CHANGE:	20061018
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>prinn3-121410_16945.xml
<DESCRIPTION>FORM 3 - MICHAEL D. PRINN
<TEXT>
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<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2010-12-14</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001378590</issuerCik>
        <issuerName>Bridgeline Digital, Inc.</issuerName>
        <issuerTradingSymbol>BLIN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001508765</rptOwnerCik>
            <rptOwnerName>Prinn Michael</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BRIDGELINE DIGITAL, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>10 SIXTH ROAD</rptOwnerStreet2>
            <rptOwnerCity>WOBURN</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01801</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP Finance and CAO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.14</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2020-08-23</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These options become exercisable with respect to 1/3 of the underlying shares on each of August 23, 2011, 2012 and 2013.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Michael D. Prinn</signatureName>
        <signatureDate>2010-12-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
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<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>exh24_16945.htm
<DESCRIPTION>POWER OF ATTORNEY
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<div style="TEXT-ALIGN: right; TEXT-INDENT: 0pt; DISPLAY: block"><font style="FONT-WEIGHT: bold; TEXT-DECORATION: underline">EXHIBIT 24</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block"><br>
<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold">POWER OF ATTORNEY</font></div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block">&#160;</div>

<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt">KNOW ALL BY THESE PRESENTS, that the person whose signature appears below hereby revokes all powers of attorney relating to the following matters and constitutes and appoints Thomas L. Massie and Daniele Ouellette Levy, and any one of them acting singly, the true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for the undersigned and in the undersigned's name, place and stead, in any and all capacities (until revoked in writing) to sign any and all instruments, certificates and documents required to be executed on behalf of the undersigned in the undersigned's capacity as an officer and/or director of Bridgeline Digital, Inc., pursuant to sections 13 and 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any and all regulations promulgated thereunder, and to file
 the same, with all exhibits thereto, and any other documents in connection therewith, with the Securities and Exchange Commission, and with any other entity when and if such is mandated by the Exchange Act or by the Nasdaq Capital Market Rules, granting unto said attorneys-in-fact and agents full power and authority to do and perform each and every act and thing requisite and necessary fully to all intents and purposes as the undersigned might or could do in person thereby ratifying and confirming all that said attorneys-in-fact and agents, or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.</font></div>

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<td width="23%" style="BORDER-BOTTOM: black 2px solid"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">/s/ Michael D. Prinn&#160;</font></td>
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<td width="9%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt"> </font>
<div style="TEXT-INDENT: 0pt; DISPLAY: block; MARGIN-LEFT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt"><font style="DISPLAY: inline; FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Name:</font></font></div>
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<td width="23%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">Michael D. Prinn&#160;</font></td>
<td width="43%"><font style="FONT-FAMILY: times new roman; FONT-SIZE: 10pt">&#160;</font></td>
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<div>&#160;</div>
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