<SEC-DOCUMENT>0001209191-14-027010.txt : 20140410
<SEC-HEADER>0001209191-14-027010.hdr.sgml : 20140410
<ACCEPTANCE-DATETIME>20140410171630
ACCESSION NUMBER:		0001209191-14-027010
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20140410
FILED AS OF DATE:		20140410
DATE AS OF CHANGE:		20140410

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cerulean Pharma Inc.
		CENTRAL INDEX KEY:			0001401914
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		840 MEMORIAL DRIVE
		STREET 2:		5TH FLOOR
		CITY:			Cambridge
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		617-551-9600

	MAIL ADDRESS:	
		STREET 1:		840 MEMORIAL DRIVE
		STREET 2:		5TH FLOOR
		CITY:			Cambridge
		STATE:			MA
		ZIP:			02139

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Tempo Pharmaceuticals Inc
		DATE OF NAME CHANGE:	20070604

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Crane Alan L
		CENTRAL INDEX KEY:			0001294361

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36395
		FILM NUMBER:		14758040

	MAIL ADDRESS:	
		STREET 1:		C/O MOMENTA PHARMACEUTICALS, INC.
		STREET 2:		43 MOULTON STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02138
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
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    <documentType>3</documentType>

    <periodOfReport>2014-04-10</periodOfReport>

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    <issuer>
        <issuerCik>0001401914</issuerCik>
        <issuerName>Cerulean Pharma Inc.</issuerName>
        <issuerTradingSymbol>CERU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
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            <rptOwnerCik>0001294361</rptOwnerCik>
            <rptOwnerName>Crane Alan L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CERULEAN PHARMA INC.</rptOwnerStreet1>
            <rptOwnerStreet2>840 MEMORIAL DRIVE</rptOwnerStreet2>
            <rptOwnerCity>CAMBRIDGE</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02139</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
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            <exerciseDate>
                <value>2009-12-04</value>
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                <value>Stock Option (right to buy)</value>
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                <footnoteId id="F1"/>
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                <value>2023-02-06</value>
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            <ownershipNature>
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                    <value>D</value>
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        <derivativeHolding>
            <securityTitle>
                <value>Seed Convertible Preferred Stock</value>
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            <underlyingSecurity>
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                    <value>Common Stock</value>
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                <underlyingSecurityShares>
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                    <footnoteId id="F1"/>
                    <footnoteId id="F6"/>
                    <footnoteId id="F7"/>
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            <ownershipNature>
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                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F8"/>
                    <footnoteId id="F9"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series A Convertible Preferred Stock</value>
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                <footnoteId id="F10"/>
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            <exerciseDate>
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            <expirationDate>
                <footnoteId id="F10"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>355307</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F10"/>
                    <footnoteId id="F11"/>
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            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F8"/>
                    <footnoteId id="F9"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series B Convertible Preferred Stock</value>
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            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
                <footnoteId id="F12"/>
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                <footnoteId id="F12"/>
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            <expirationDate>
                <footnoteId id="F12"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>184314</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F12"/>
                    <footnoteId id="F13"/>
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            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F8"/>
                    <footnoteId id="F9"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series B-1 Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
                <footnoteId id="F14"/>
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            <exerciseDate>
                <footnoteId id="F14"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F14"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>468263</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F14"/>
                    <footnoteId id="F15"/>
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            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F16"/>
                    <footnoteId id="F17"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series C Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
                <footnoteId id="F18"/>
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            <exerciseDate>
                <footnoteId id="F18"/>
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            <expirationDate>
                <footnoteId id="F18"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>655512</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F18"/>
                    <footnoteId id="F19"/>
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            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F20"/>
                    <footnoteId id="F21"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series D Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
                <footnoteId id="F22"/>
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            <exerciseDate>
                <footnoteId id="F22"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F22"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>592665</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F22"/>
                    <footnoteId id="F23"/>
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            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F20"/>
                    <footnoteId id="F21"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Warrant to purchase Series C Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.74</value>
                <footnoteId id="F24"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F24"/>
            </exerciseDate>
            <expirationDate>
                <value>2017-11-12</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Series C Convertible Preferred Stock</value>
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                <underlyingSecurityShares>
                    <value>441528</value>
                    <footnoteId id="F24"/>
                    <footnoteId id="F25"/>
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            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F20"/>
                    <footnoteId id="F21"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>7% Convertible Promissory Notes</value>
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            <conversionOrExercisePrice>
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            <exerciseDate>
                <footnoteId id="F26"/>
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            <expirationDate>
                <footnoteId id="F26"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>385435</value>
                    <footnoteId id="F27"/>
                    <footnoteId id="F28"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F16"/>
                    <footnoteId id="F17"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>7% Convertible Promissory Notes</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F30"/>
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            <exerciseDate>
                <footnoteId id="F29"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F29"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>401061</value>
                    <footnoteId id="F30"/>
                    <footnoteId id="F31"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F16"/>
                    <footnoteId id="F17"/>
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    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reflects a 1-for-14.5074 reverse stock split effected on March 31, 2014.</footnote>
        <footnote id="F2">This option was granted December 4, 2009 and was fully vested upon grant.</footnote>
        <footnote id="F3">Reflects a per share reduction in exercise price on January 28, 2011 from $5.50 per share to $3.34 per share.</footnote>
        <footnote id="F4">This option was granted on January 28, 2011. This option vested as to 25% of the underlying shares on December 31, 2011 and vests as to an additional 2.08333% of the shares monthly thereafter through December 31, 2014.</footnote>
        <footnote id="F5">This option was granted on February 6, 2013 and vests as follows: (i) 11,922 of the shares shall vest either upon the occurrence of a change in control event meeting certain objective criteria or the Company's stock reaching a specified average price per share; (ii) an additional 11,922 of the shares shall vest either upon the occurrence of a change in control event meeting certain objective criteria or the Company's stock reaching a specified average price per share and (iii) an additional 11,921 of the shares shall vest either upon the occurrence of a change in control event meeting certain objective criteria or the Company's stock reaching a specified average price per share.</footnote>
        <footnote id="F6">Shares of Seed Convertible Preferred Stock are convertible into Common Stock on a 0.0726-for-1 basis into the number of shares of Common Stock shown in column 3 at any time at the holder's election and automatically upon the closing of the Company's initial public offering. The shares have no expiration date.</footnote>
        <footnote id="F7">Consists of 178,061 and 3,338 shares of Common Stock issuable upon conversion of Seed Convertible Preferred Stock held by Polaris Venture Partners IV, LP (&quot;Polaris IV&quot;) and Polaris Ventures Partners Entrepreneurs' Fund IV, LP (&quot;Polaris EFund IV&quot;), respectively.</footnote>
        <footnote id="F8">Each of Polaris IV and Polaris EFund IV has the sole voting and investment power with respect to the shares directly held by it. The general partner of each of Polaris IV and Polaris EFund IV is Polaris Venture Management Co. IV, LLC (&quot;Polaris Management IV&quot;). Polaris Management IV may be deemed to have sole voting and investment power with respect to the shares held by the Polaris IV and Polaris EFund IV of which they are general partner, and Polaris Management IV disclaims beneficial ownership of all the shares held by Polaris IV and Polaris EFund IV except to the extent of its proportionate pecuniary interests therein.</footnote>
        <footnote id="F9">North Star Venture Management 2000, LLC (&quot;North Star&quot;) directly or indirectly provides investment advisory services to various venture capital funds, including the Polaris IV and Polaris EFund IV. The members of North Star (the &quot;Management Members&quot;) are also members of Polaris Management IV, and as such, they may be deemed to share voting and investment power over the shares held by the Polaris IV and Polaris EFund IV. The Management Members disclaim beneficial ownership of such shares, except to the extent of their proportionate pecuniary interest therein.  Mr. Crane has an assignee interest in Polaris Management IV. To the extent that he is deemed to share voting and investment powers with respect to the shares held by the Polaris IV and Polaris EFund IV, Mr. Crane disclaims beneficial ownership of all the shares held by the Polaris IV and Polaris EFund IV except to the extent of his proportionate pecuniary interest therein.</footnote>
        <footnote id="F10">Shares of Series A Convertible Preferred Stock are convertible into Common Stock on a 0.0924-for-1 basis into the number of shares of Common Stock shown in column 3 at any time at the holder's election and automatically upon the closing of the Company's initial public offering. The shares have no expiration date.</footnote>
        <footnote id="F11">Consists of 348,769 and 6,538 shares of Common Stock issuable upon conversion of Series A Convertible Preferred Stock held by Polaris IV and Polaris EFund IV, respectively.</footnote>
        <footnote id="F12">Shares of Series B Convertible Preferred Stock are convertible into Common Stock on a 0.1130-for-1 basis into the number of shares of Common Stock shown in column 3 at any time at the holder's election and automatically upon the closing of the Company's initial public offering. The shares have no expiration date.</footnote>
        <footnote id="F13">Consists of 180,923 and 3,391 shares of Common Stock issuable upon conversion of Series B Convertible Preferred Stock held by Polaris IV and Polaris EFund IV, respectively.</footnote>
        <footnote id="F14">Shares of Series B-1 Convertible Preferred Stock are convertible into Common Stock on a 0.1863-for-1 basis into the number of shares of Common Stock shown in column 3 at any time at the holder's election and automatically upon the closing of the Company's initial public offering. The shares have no expiration date.</footnote>
        <footnote id="F15">Consists of 451,844, 8,806, 3,095 and 4,518 shares of Common Stock issuable upon conversion of Series B-1 Convertible Preferred Stock held by Polaris Venture Partners V, LP (&quot;Polaris V&quot;), Polaris Venture Partners Entrepreneurs' Fund V, LP (&quot;Polaris EFund V&quot;), Polaris Ventures Partners Founders' Fund V, LP (&quot;Polaris FFund V&quot;) and Polaris Venture Partners Special Founders' Fund V, LP (&quot;Polaris SFFund V&quot;), respectively.</footnote>
        <footnote id="F16">Each of Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V has the sole voting and investment power with respect to the shares directly held by it. The general partner of each of Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V is Polaris Venture Management Co. V, LLC (&quot;Polaris Management V&quot;). Polaris Management V may be deemed to have sole voting and investment power with respect to the shares held by Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V of which they are general partner, and Polaris Management V disclaims beneficial ownership of all the shares held by Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V except to the extent of its proportionate pecuniary interests therein.</footnote>
        <footnote id="F17">North Star directly or indirectly provides investment advisory services to various venture capital funds, including Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V. The Management Members are also members of Polaris Management V, and as such, they may be deemed to share voting and investment power over the shares held by Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V. The Management Members disclaim beneficial ownership of such shares, except to the extent of their proportionate pecuniary interest therein. Mr. Crane has an assignee interest in Polaris Management V. To the extent that he is deemed to share voting and investment powers with respect to the shares held by Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V, Mr. Crane disclaims beneficial ownership of all the shares held by Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V except to the extent of his proportionate pecuniary interest therein.</footnote>
        <footnote id="F18">Shares of Series C Convertible Preferred Stock are convertible into Common Stock on a 0.0689-for-1 basis into the number of shares of Common Stock shown in column 3 at any time at the holder's election and automatically upon the closing of the Company's initial public offering. The shares have no expiration date.</footnote>
        <footnote id="F19">Consists of 489,288, 9,172, 151,549, 2,952, 1,037 and 1,514 shares of Common Stock issuable upon conversion of Series C Convertible Preferred Stock held by Polaris IV, Polaris EFund IV, Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V, respectively.</footnote>
        <footnote id="F20">Each of Polaris IV, Polaris EFund IV, Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V (collectively, the &quot;Polaris Funds&quot;) has the sole voting and investment power with respect to the shares directly held by it. The general partner of each of Polaris IV and Polaris EFund IV is Polaris Management IV, and the general partner of each of Polaris EFund V, Polaris FFund V and Polaris SFFund V is Polaris Management V. Polaris Management IV and Polaris Management V may be deemed to have sole voting and investment power with respect to the shares held by the Polaris Funds of which they are general partner, and each of Polaris Management IV and Polaris Management V disclaims beneficial ownership of all the shares held by the Polaris Funds except to the extent of their proportionate pecuniary interests therein.</footnote>
        <footnote id="F21">North Star directly or indirectly provides investment advisory services to various venture capital funds, including the Polaris Funds. The Management Members are also members of Polaris Management IV and Polaris Management V, and as such, they may be deemed to share voting and investment power over the shares held by the Polaris Funds. The Management Members disclaim beneficial ownership of such shares, except to the extent of their proportionate pecuniary interest therein.   Mr. Crane has an assignee interest in Polaris Management IV and Polaris Management V. To the extent that he is deemed to share voting and investment powers with respect to the shares held by the Polaris Funds, Mr. Crane disclaims beneficial ownership of all the shares held by the Polaris Funds except to the extent of his proportionate pecuniary interest therein.</footnote>
        <footnote id="F22">Shares of Series D Convertible Preferred Stock are convertible into Common Stock on a 0.0689-for-1 basis into the number of shares of Common Stock shown in column 3 at any time at the holder's election and automatically upon the closing of the Company's initial public offering. The shares have no expiration date.</footnote>
        <footnote id="F23">Consists of 208,709, 3,912, 366,720, 7,146, 2,511 and 3,667 shares of Common Stock issuable upon conversion of Series D Convertible Preferred Stock held by Polaris IV, Polaris EFund IV, Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V, respectively.</footnote>
        <footnote id="F24">In connection with the completion of the Company's initial public offering of Common Stock the warrant to purchase Series C Convertible Preferred Stock shall automatically convert into a warrant to purchase Common Stock on a 0.0689-for-1 basis and is exercisable at any time at the holder's election.</footnote>
        <footnote id="F25">Consists of 76,053, 1,425, 351,286, 6,846, 2,406, and 3,512 shares of Series C Convertible Preferred Stock issuable upon exercise of the warrants to purchase Series C Convertible Preferred Stock held by Polaris IV, Polaris EFund IV, Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V, respectively.</footnote>
        <footnote id="F26">The outstanding principal and accrued interest under the 7% Convertible Promissory Notes issued on August 15, 2013 are convertible after August 15, 2014, at the holder's election.  The Notes have no expiration date. The outstanding principal and accrued interest under the Notes will convert into shares of Common Stock automatically upon consummation of the Company's initial public offering.</footnote>
        <footnote id="F27">The number of shares of Common Stock is based upon a conversion of all outstanding principal and accrued interest on the Notes through April 15, 2014, at a conversion price of $7.00 per share of Common Stock, which is the initial public offering price.</footnote>
        <footnote id="F28">Consists of 371,919, 7,249, 2,548 and 3,719 shares of Common Stock issuable upon conversion of the Notes held by Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V, respectively.</footnote>
        <footnote id="F29">The outstanding principal and accrued interest under the 7% Convertible Promissory Notes issued on February 14, 2014 is convertible at any time after February 26, 2015 at the holder's election.  The Notes have no expiration date. The outstanding principal and accrued interest under the Notes will convert into shares of Common Stock automatically upon consummation of the Company's initial public offering at 77.5% of the initial public offering price.</footnote>
        <footnote id="F30">The number of shares of Common Stock is based upon a conversion of all principal and accrued interest on the Notes through April 15, 2014, at a conversion price equal to $5.43 per share of Common Stock, which is 77.5% of the initial public offering price of $7.00 per share.</footnote>
        <footnote id="F31">Consists of 386,997, 7,543, 2,651 and 3,870 shares of Common Stock issuable upon conversion of the Notes held by Polaris V, Polaris EFund V, Polaris FFund V and Polaris SFFund V, respectively.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Karen L. Roberts, as attorney-in-fact for Alan L. Crane</signatureName>
        <signatureDate>2014-04-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.3_518105
<SEQUENCE>2
<FILENAME>poa.txt
<DESCRIPTION>POA DOCUMENT
<TEXT>
LIMITED POWER OF ATTORNEY
FOR SECTION 16 REPORTING OBLIGATIONS

Know all by these presents, that the undersigned hereby makes, constitutes and
appoints each of Oliver S. Fetzer, Ph.D., Christopher D.T. Guiffre and Karen L.
Roberts, signing singly and each acting individually, as the undersigned's true
and lawful attorney in fact with full power and authority as hereinafter
described to:
(1)	execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer and/or director of Cerulean Pharma Inc. (the "Company"), Forms 3,
4, and 5 (including any amendments thereto) in accordance with Section 16(a) of
the Securities Exchange Act of 1934 and the rules thereunder (the "Exchange
Act");
(2)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to prepare, complete and execute any such Form 3,
4, or 5, prepare, complete and execute any amendment or amendments thereto, and
timely deliver and file such form with the United States Securities and Exchange
Commission and any stock exchange or similar authority;
(3)	seek or obtain, as the undersigned's representative and on the undersigned's
behalf, information regarding transactions in the Company's securities from any
third party, including brokers, employee benefit plan administrators and
trustees, and the undersigned hereby authorizes any such person to release any
such information to such attorney in fact and approves and ratifies any such
release of information; and
(4)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney in fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney in fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney in fact may approve in such
attorney in fact's discretion.

The undersigned hereby grants to each such attorney in fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney in fact, or such attorney
in fact's substitute or substitutes, shall lawfully do or cause to be done by
virtue of this power of attorney and the rights and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys in fact, in serving in
such capacity at the request of the undersigned, are not assuming nor relieving,
nor is the Company assuming nor relieving, any of the undersigned's
responsibilities to comply with Section 16 of the Exchange Act.  The undersigned
acknowledges that neither the Company nor the foregoing attorneys in fact assume
(i) any liability for the undersigned's responsibility to comply with the
requirement of the Exchange Act, (ii) any liability of the undersigned for any
failure to comply with such requirements, or (iii) any obligation or liability
of the undersigned for profit disgorgement under Section 16(b) of the Exchange
Act.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys in fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 5th day of April, 2014.

/s/ Alan L. Crane
Signature

Alan L. Crane
Print Name

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
