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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-11-30</periodOfReport>

    <issuer>
        <issuerCik>0001160958</issuerCik>
        <issuerName>INPHI Corp</issuerName>
        <issuerTradingSymbol>IPHI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001134607</rptOwnerCik>
            <rptOwnerName>BANATAO DIOSDADO P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2953 BUNKER HILL LANE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>SANTA CLARA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95054</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-11-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>29656</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>39.60</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Banatao Living Trust DTD 7/21/99</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5144</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents the weighted average sales price for a number of transactions effected at prices ranging from $39.50 to $39.75. The reporting person has provided to the issuer, and undertakes to provide upon request to the SEC staff, or any security holder of the issuer, information regarding the number of shares sold at each separate price within the range.</footnote>
        <footnote id="F2">The Reporting Person, as trustee of the Banatao Living Trust DTD 7/21/99, holds shared voting and dispositive power of the securities held by this trust. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of any pecuniary interest therein.</footnote>
        <footnote id="F3">Reflects a transfer of 3,328 common stock previously reported as being held directly by the Reporting Person to Banatao Living Trust DTD 7/21/99 on May 25, 2018.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ John Edmunds, attorney-in-fact</signatureName>
        <signatureDate>2018-12-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
