<SUBMISSION>
<ACCESSION-NUMBER>0001181431-06-005542
<TYPE>3/A
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20050805
<FILING-DATE>20060125
<DATE-OF-FILING-DATE-CHANGE>20060125
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>JOHNSTON RICHARD M
<CIK>0001211913
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>3/A
<ACT>34
<FILE-NUMBER>000-51470
<FILM-NUMBER>06549389
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>ONE SOUTH STREET
<STREET2>SUITE 2150
<CITY>BALTIMORE
<STATE>MD
<ZIP>21202
<PHONE>4108953800
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>AtriCure, Inc.
<CIK>0001323885
<ASSIGNED-SIC>3841
<IRS-NUMBER>341940305
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>6033 SCHUMACHER PARK DRIVE
<CITY>WEST CHESTER
<STATE>OH
<ZIP>45069
<PHONE>513-755-4107
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>6033 SCHUMACHER PARK DRIVE
<CITY>WEST CHESTER
<STATE>OH
<ZIP>45069
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>rrd104811.xml
<DESCRIPTION>FORM 3/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2005-08-05</periodOfReport>

    <dateOfOriginalSubmission>2005-08-18</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001323885</issuerCik>
        <issuerName>AtriCure, Inc.</issuerName>
        <issuerTradingSymbol>ATRC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001211913</rptOwnerCik>
            <rptOwnerName>JOHNSTON RICHARD M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE SOUTH STREET, SUITE 2150</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BALTIMORE</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>21202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.00</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2006-08-05</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2015-08-05</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Exercisable cumulatively at a rate of 25% per annum commencing on August 5, 2006 (one year from the date of grant).</footnote>
        <footnote id="F2">These shares were omitted from the reporting person's original Form 3.</footnote>
    </footnotes>

    <remarks>Please note that in the original Form 3 filed, the Date of Event Requiring Statement was noted as August 10, 2005.</remarks>

    <ownerSignature>
        <signatureName>/s/ Thomas J. Etergino as Attorney-in-Fact for Richard M. Johnston</signatureName>
        <signatureDate>2006-01-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
