<SUBMISSION>
<ACCESSION-NUMBER>0001181431-04-020426
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>2
<PERIOD>20040412
<FILING-DATE>20040413
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>YUREK GREGORY J
<CIK>0001207476
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>000-19672
<FILM-NUMBER>04730986
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>HALE & DORR
<STREET2>60 STATE STREET
<CITY>BOSTON
<STATE>MA
<ZIP>02109
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>AMERICAN SUPERCONDUCTOR CORP /DE/
<CIK>0000880807
<ASSIGNED-SIC>8731
<IRS-NUMBER>042959321
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0331
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>TWO TECHNOLOGY DR
<CITY>WESTBOROUGH
<STATE>MA
<ZIP>01581
<PHONE>5088364200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>TWO TECHNOLOGY DR
<CITY>WESTBOROUGH
<STATE>MA
<ZIP>01581
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd39357.xml
<DESCRIPTION>FORM 4 - GREGORY J. YUREK
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-04-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000880807</issuerCik>
        <issuerName>AMERICAN SUPERCONDUCTOR CORP /DE/</issuerName>
        <issuerTradingSymbol>AMSC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001207476</rptOwnerCik>
            <rptOwnerName>YUREK GREGORY J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>TWO TECHNOLOGY DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WESTBOROUGH</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01581</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-04-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>9.75</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</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>2004-04-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.95</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>143130</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-04-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>0</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11197</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Family</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>9.75</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-04-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2007-03-07</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>50000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 17, 2004.</footnote>
        <footnote id="F2">Following all the transactions reported on this Form 4, the reporting person holds 143,130 shares directly.</footnote>
        <footnote id="F3">The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.</footnote>
        <footnote id="F4">Original option (60,000 shares) exercisable in five annual increments of 12,000 shares beginning on March 7, 1998.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Gregory J. Yurek</signatureName>
        <signatureDate>2004-04-13</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.
<SEQUENCE>3
<FILENAME>rrd30885_34971.htm
<DESCRIPTION>GREGORY J. YUREK LIMITED POWER OF ATTORNEY FOR SECTION 16 REPORTING OBLIGATIONS
<TEXT>
<HTML>
<HEAD>
<TITLE>
rrd30885_34971.html
</TITLE>
</HEAD>
<BODY>
<PRE>
LIMITED POWER OF ATTORNEY<br>FOR SECTION 16 REPORTING OBLIGATIONS<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Know all by these presents, that the undersigned hereby makes, constitutes and appoints each of <br>Kevin M. Bisson, Ross S. Gibson and Patrick J. Rondeau, signing singly and each acting individually, as <br>the undersigned's true and lawful attorney-in-fact with full power and authority as hereinafter described <br>to:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;execute for and on behalf of the undersigned, in the undersigned's capacity as an officer <br>and/or director of  American Superconductor Corporation (the "Company"), Forms 3, 4, and 5 (including <br>any amendments thereto) in accordance with Section 16(a) of the Securities Exchange Act of 1934 and <br>the rules thereunder (the "Exchange Act");<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;do and perform any and all acts for and on behalf of the undersigned which may be <br>necessary or desirable to prepare, complete and execute any such Form 3, 4, or 5, prepare, complete and <br>execute any amendment or amendments thereto, and timely deliver and file such form with the United <br>States Securities and Exchange Commission and any stock exchange or similar authority;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (3)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;seek or obtain, as the undersigned's representative and on the undersigned's behalf, <br>information regarding transactions in the Company's securities from any third party, including brokers, <br>employee benefit plan administrators and trustees, and the undersigned hereby authorizes any such person <br>to release any such information to such attorney-in-fact and approves and ratifies any such release of <br>information; and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (4)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;take any other action of any type whatsoever in connection with the foregoing which, in <br>the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the <br>undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the <br>undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and <br>conditions as such attorney-in-fact may approve in such attorney-in-fact's discretion.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The undersigned hereby grants to each such attorney-in-fact full power and authority to do and <br>perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise <br>of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned <br>might or could do if personally present, with full power of substitution or revocation, hereby ratifying and <br>confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully <br>do or cause to be done by virtue of this power of attorney and the rights and powers herein granted.  The <br>undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request <br>of the undersigned, are not assuming nor relieving, nor is the Company assuming nor relieving, any of the <br>undersigned's responsibilities to comply with Section 16 of the Exchange Act.  The undersigned <br>acknowledges that neither the Company nor the foregoing attorneys-in-fact assume (i) any liability for the <br>undersigned's responsibility to comply with the requirement of the Exchange Act, (ii) any liability of the <br>undersigned for any failure to comply with such requirements, or (iii) any obligation or liability of the <br>undersigned for profit disgorgement under Section 16(b) of the Exchange Act.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; This Power of Attorney shall remain in full force and effect until the undersigned is no longer <br>required to file Forms 3, 4, and 5 with respect to the undersigned's holdings of and transactions in <br>securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered <br>to the foregoing attorneys-in-fact.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as <br>of this 16th day of March, 2004.<br>/s/ Gregory J. Yurek&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>Signature<p>Gregory J. Yurek&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>Print Name<p><p><br>\\\DC - 57385/2 - #1301253 v1<p><p>\\\DC - 57385/2 - #1301253 v1<br>
</PRE>
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</TEXT>
</DOCUMENT>
</SUBMISSION>
