-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001179110-08-009926.txt : 20080516
<SEC-HEADER>0001179110-08-009926.hdr.sgml : 20080516
<ACCEPTANCE-DATETIME>20080516144431
ACCESSION NUMBER:		0001179110-08-009926
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:			BIP 2001 LP
		CENTRAL INDEX KEY:			0001253056

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33589
		FILM NUMBER:		08841823

	BUSINESS ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		STE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538
		BUSINESS PHONE:		9148335333

	MAIL ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		SUITE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BVE 2001 Q LLC
		CENTRAL INDEX KEY:			0001126779
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33589
		FILM NUMBER:		08841824

	BUSINESS ADDRESS:	
		STREET 1:		1865 PLAMER AVENUE
		STREET 2:		SUITE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538
		BUSINESS PHONE:		914-833-5300

	MAIL ADDRESS:	
		STREET 1:		1865 PLAMER AVENUE
		STREET 2:		SUITE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BVE 2001 LLC
		CENTRAL INDEX KEY:			0001126819
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33589
		FILM NUMBER:		08841825

	BUSINESS ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		SUITE 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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BESSEC VENTURES V LP
		CENTRAL INDEX KEY:			0001253051

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33589
		FILM NUMBER:		08841826

	BUSINESS ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		STE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538
		BUSINESS PHONE:		9148335333

	MAIL ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		SUITE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BESSEMER VENTURE PARTNERS V LP
		CENTRAL INDEX KEY:			0001253054

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33589
		FILM NUMBER:		08841827

	BUSINESS ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		STE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538
		BUSINESS PHONE:		9148335333

	MAIL ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		SUITE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DEER V & CO LLC
		CENTRAL INDEX KEY:			0001253058

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33589
		FILM NUMBER:		08841828

	BUSINESS ADDRESS:	
		STREET 1:		1865 PALMER AVENUE
		STREET 2:		STE 104
		CITY:			LARCHMONT
		STATE:			NY
		ZIP:			10538
		BUSINESS PHONE:		9148335333

	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>0001253058</rptOwnerCik>
            <rptOwnerName>DEER V &amp; CO LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BESSEMER VENTURE PARTNERS</rptOwnerStreet1>
            <rptOwnerStreet2>1865 PALMER AVENUE, 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>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001253054</rptOwnerCik>
            <rptOwnerName>BESSEMER VENTURE PARTNERS V LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BESSEMER VENTURE PARTNERS</rptOwnerStreet1>
            <rptOwnerStreet2>1865 PALMER AVENUE, 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>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001253051</rptOwnerCik>
            <rptOwnerName>BESSEC VENTURES V LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BESSEMER VENTURE PARTNERS</rptOwnerStreet1>
            <rptOwnerStreet2>1865 PALMER AVENUE, 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>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001126819</rptOwnerCik>
            <rptOwnerName>BVE 2001 LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BESSEMER VENTURE PARTNERS</rptOwnerStreet1>
            <rptOwnerStreet2>1865 PALMER AVENUE, 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>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001126779</rptOwnerCik>
            <rptOwnerName>BVE 2001 Q LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BESSEMER VENTURE PARTNERS</rptOwnerStreet1>
            <rptOwnerStreet2>1865 PALMER AVENUE, 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>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001253056</rptOwnerCik>
            <rptOwnerName>BIP 2001 LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BESSEMER VENTURE PARTNERS</rptOwnerStreet1>
            <rptOwnerStreet2>1865 PALMER AVENUE, 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>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See remarks</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>1377704</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F6"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <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>41197</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F6"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <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>670978</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F6"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <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>427305</value>
                    <footnoteId id="F4"/>
                    <footnoteId id="F6"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <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>204832</value>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28</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>
        <footnote id="F1">These securities were owned solely by Bessec Ventures V L.P.</footnote>
        <footnote id="F2">These securities were owned solely by BVE 2001 LLC.</footnote>
        <footnote id="F3">These securities were owned solely by BVE 2001(Q) LLC</footnote>
        <footnote id="F4">These securities were owned solely by BIP 2001 L.P.</footnote>
        <footnote id="F5">These securities were owned solely by Deer V &amp; Co. LLC.</footnote>
        <footnote id="F6">Deer V &amp; Co. LLC 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 had a beneficial interest in the shares held by the BVP Funds. The voting and investment power with respect to these shares was vested in the executive managers of Deer V &amp; Co. LLC, consisting of Robert P. Goodman, Robin S. Chandra, J. Edmund Colloton and David J. Cowan. Deer V &amp; Co. disclaims beneficial ownership of such shares, except to the extent of its pecuniary interest in such shares which is subject to indeterminate future events.</footnote>
    </footnotes>

    <remarks>The reporting persons are members of a 13(d) group owning more than 10% of the Issuer's outstanding equity securities. The reporting persons have a representative on the Issuer's board of directors. Robert P. Goodman currently serves as the reporting persons' representative on the board of directors and, as such, the reporting persons are deemed directors of the Issuer.</remarks>

    <ownerSignature>
        <signatureName>/s/ J. Edmund Colloton, Executive Manager</signatureName>
        <signatureDate>2008-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ J. Edmund Colloton, Executive Manager</signatureName>
        <signatureDate>2008-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ J. Edmund Colloton, Executive Manager</signatureName>
        <signatureDate>2008-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ J. Edmund Colloton, Executive Manager</signatureName>
        <signatureDate>2008-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ J. Edmund Colloton, Executive Manager</signatureName>
        <signatureDate>2008-05-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ J. Edmund Colloton, Executive Manager</signatureName>
        <signatureDate>2008-05-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----