<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
    <periodOfReport>2003-08-01</periodOfReport>
    <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000730708</issuerCik>
        <issuerName>SEACOAST BANKING CORP OF FLORIDA</issuerName>
        <issuerTradingSymbol>SBCF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>

        <reportingOwnerId>
            <rptOwnerCik>0001200655</rptOwnerCik>
            <rptOwnerName>CURTIS C WILLIAM JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3410 BUCKINGHAMMOCK TRAIL</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>VERO BEACH</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>32960</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
        <isDirector>0</isDirector>
        <isOfficer>1</isOfficer>
        <isTenPercentOwner>0</isTenPercentOwner>
        <isOther>0</isOther>
        <officerTitle>Sr Exec VP/Chief Banking Off</officerTitle>
    </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>

        <securityTitle>
            <value>Common Stock</value>
        </securityTitle>

        <transactionDate>
            <value>2003-08-01</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>5</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F1"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>638</value>
                <footnoteId id="F1"/>
            </transactionShares>

            <transactionPricePerShare>
                <value>0</value>
                <footnoteId id="F1"/>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>7026</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </nonDerivativeTransaction>

        <nonDerivativeTransaction>

        <securityTitle>
            <value>Common Stock</value>
        </securityTitle>

        <transactionDate>
            <value>2003-08-01</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>5</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F1"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>3867</value>
                <footnoteId id="F1"/>
            </transactionShares>

            <transactionPricePerShare>
                <value>0</value>
                <footnoteId id="F1"/>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>42546</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>

            <natureOfOwnership>
                <value>by Spouse</value>
            </natureOfOwnership>
        </ownershipNature>
        </nonDerivativeTransaction>

        <nonDerivativeTransaction>

        <securityTitle>
            <value>Common Stock</value>
        </securityTitle>

        <transactionDate>
            <value>2003-08-01</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>5</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F1"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>10</value>
                <footnoteId id="F1"/>
            </transactionShares>

            <transactionPricePerShare>
                <value>0</value>
                <footnoteId id="F1"/>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>110</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>I</value>
            </directOrIndirectOwnership>

            <natureOfOwnership>
                <value>Jointly by spouse, daughters and daughter-in-law</value>
            </natureOfOwnership>
        </ownershipNature>
        </nonDerivativeTransaction>

    </nonDerivativeTable>
    <derivativeTable>
        <derivativeTransaction>

        <securityTitle>
            <value>Common Stock Option</value>
        </securityTitle>

        <conversionOrExercisePrice>
            <value>7.7273</value>
        </conversionOrExercisePrice>

        <transactionDate>
            <value>2003-08-01</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>5</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F1"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>1800</value>
            </transactionShares>

            <transactionPricePerShare>
                <value>7.7273</value>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>

        <exerciseDate>
            <value>2001-05-20</value>
        </exerciseDate>

        <expirationDate>
            <value>2007-05-20</value>
        </expirationDate>
        <underlyingSecurity>

            <underlyingSecurityTitle>
                <value>Common</value>
            </underlyingSecurityTitle>

            <underlyingSecurityShares>
                <value>1800</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>19800</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </derivativeTransaction>

        <derivativeTransaction>

        <securityTitle>
            <value>Common Stock Option</value>
        </securityTitle>

        <conversionOrExercisePrice>
            <value>8.7879</value>
        </conversionOrExercisePrice>

        <transactionDate>
            <value>2003-08-01</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>5</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F1"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>6600</value>
            </transactionShares>

            <transactionPricePerShare>
                <value>8.7879</value>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>

        <exerciseDate>
            <value>1999-07-01</value>
        </exerciseDate>

        <expirationDate>
            <value>2008-06-30</value>
        </expirationDate>
        <underlyingSecurity>

            <underlyingSecurityTitle>
                <value>Common</value>
            </underlyingSecurityTitle>

            <underlyingSecurityShares>
                <value>6600</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>72600</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </derivativeTransaction>

    </derivativeTable>
    <footnotes>
        <footnote id="F1">Effect of stock split effective August 1, 2003</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>C. William Curtis, Jr.</signatureName>
        <signatureDate>2003-08-05</signatureDate>
    </ownerSignature>

</ownershipDocument>

