-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 A71sL7xKUZojBlLvL656eQ==

<SEC-DOCUMENT>0001179110-08-009939.txt : 20080516
<SEC-HEADER>0001179110-08-009939.hdr.sgml : 20080516
<ACCEPTANCE-DATETIME>20080516144859
ACCESSION NUMBER:		0001179110-08-009939
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080418
FILED AS OF DATE:		20080516
DATE AS OF CHANGE:		20080516

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BladeLogic, Inc.
		CENTRAL INDEX KEY:			0001175685
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				043569976
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		10 MAGUIRE ROAD, BUILDING 3
		CITY:			LEXINGTON
		STATE:			MA
		ZIP:			02421
		BUSINESS PHONE:		781-257-3500

	MAIL ADDRESS:	
		STREET 1:		10 MAGUIRE ROAD, BUILDING 3
		CITY:			LEXINGTON
		STATE:			MA
		ZIP:			02421

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLADELOGIC INC
		DATE OF NAME CHANGE:	20020617

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GOODMAN ROBERT P
		CENTRAL INDEX KEY:			0001252022

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33589
		FILM NUMBER:		08841855

	BUSINESS ADDRESS:	
		STREET 1:		1865 PALMER AVE STE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538
		BUSINESS PHONE:		914-833-5300

	MAIL ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		SUITE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-04-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001175685</issuerCik>
        <issuerName>BladeLogic, Inc.</issuerName>
        <issuerTradingSymbol>BLOG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001252022</rptOwnerCik>
            <rptOwnerName>GOODMAN ROBERT P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BESSEMER VENTURE PARTNERS</rptOwnerStreet1>
            <rptOwnerStreet2>1865 PALMER AVE, SUITE 104</rptOwnerStreet2>
            <rptOwnerCity>LARCHMONT</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10538</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-04-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>U</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>14190</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks>The reporting person is an executive manager of Deer V &amp; Co. LLC, which is the general partner/managing member of Bessemer Venture Partners V L.P., Bessec Ventures V L.P., BVE 2001 LLC, BVE 2001(Q) LLC and BIP 2001 L.P. (the &quot;BVP Funds&quot;) and may be deemed to have a beneficial interest in the shares held by the BVP Funds. The reporting person disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest in such shares which is subject to indeterminable future events.</remarks>

    <ownerSignature>
        <signatureName>/s/ Michael J. Cayer, attorney-in-fact</signatureName>
        <signatureDate>2008-05-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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