-----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,
 E6w3xcwwun2axKQ9PE7HnB870Zp0GhjZkMYsyJEh0cFbPqhowXrbv4m4eCMmRhY4
 dA9awLs3wr4tivqsv9hjCg==

<SEC-DOCUMENT>0001179110-09-016639.txt : 20091209
<SEC-HEADER>0001179110-09-016639.hdr.sgml : 20091209
<ACCEPTANCE-DATETIME>20091209165327
ACCESSION NUMBER:		0001179110-09-016639
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091208
FILED AS OF DATE:		20091209
DATE AS OF CHANGE:		20091209

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MARTIN PAUL E
		CENTRAL INDEX KEY:			0001175797

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15169
		FILM NUMBER:		091231395

	MAIL ADDRESS:	
		STREET 1:		CHARTER COMMUNICATIONS, INC.
		STREET 2:		12405 POWERSCOURT DRIVE
		CITY:			ST. LOUIS
		STATE:			MO
		ZIP:			63131

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PERFICIENT INC
		CENTRAL INDEX KEY:			0001085869
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				742853258
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1120 SOUTH CAPITAL OF TEXAS HWY,
		STREET 2:		SUITE 220, BLDG. 3
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746
		BUSINESS PHONE:		5125316000

	MAIL ADDRESS:	
		STREET 1:		1120 SOUTH CAPITAL OF TEXAS OF HWY
		STREET 2:		SUITE 220, BLDG 3
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-12-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001085869</issuerCik>
        <issuerName>PERFICIENT INC</issuerName>
        <issuerTradingSymbol>PRFT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001175797</rptOwnerCik>
            <rptOwnerName>MARTIN PAUL E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>520 MARYVILLE CENTRE DR</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 400</rptOwnerStreet2>
            <rptOwnerCity>ST. LOUIS</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63141</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CFO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-12-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.48</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>248365</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Shares were sold pursuant to owner's 10b5-1 trading plan effective November 20, 2009.  Trading plan was established to cover taxes on restricted stock release on December 4, 2009.</footnote>
        <footnote id="F2">Balance increased by 119 shares from August 16, 2009 thru November 30, 2009 due to company 401K matching program.</footnote>
        <footnote id="F3">The total securites owned in Tables I and II is 248,365.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Paul E. Martin</signatureName>
        <signatureDate>2009-12-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----