<SEC-DOCUMENT>0001104659-13-028164.txt : 20130409
<SEC-HEADER>0001104659-13-028164.hdr.sgml : 20130409
<ACCEPTANCE-DATETIME>20130409213531
ACCESSION NUMBER:		0001104659-13-028164
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20130405
FILED AS OF DATE:		20130409
DATE AS OF CHANGE:		20130409

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lin Chen-Hao Timothy
		CENTRAL INDEX KEY:			0001566579

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34992
		FILM NUMBER:		13752154

	MAIL ADDRESS:	
		STREET 1:		3F, NO. 11 KE JUNG RD., CHU-NAN SITE
		STREET 2:		HSINCHU SCIENCE PARK, MIAO-LI COUNTY
		CITY:			CHU-NAN
		STATE:			F5
		ZIP:			350

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SemiLEDs Corp
		CENTRAL INDEX KEY:			0001333822
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				202735523

	BUSINESS ADDRESS:	
		STREET 1:		3F, NO. 11 KE JUNG RD., CHU-NAN SITE
		STREET 2:		HSINCHU SCIENCE PARK, MIAO-LI COUNTY
		CITY:			CHU-NAN
		STATE:			F5
		ZIP:			350
		BUSINESS PHONE:		886-37-586788

	MAIL ADDRESS:	
		STREET 1:		3F, NO. 11 KE JUNG RD., CHU-NAN SITE
		STREET 2:		HSINCHU SCIENCE PARK, MIAO-LI COUNTY
		CITY:			CHU-NAN
		STATE:			F5
		ZIP:			350
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-04-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001333822</issuerCik>
        <issuerName>SemiLEDs Corp</issuerName>
        <issuerTradingSymbol>LEDS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001566579</rptOwnerCik>
            <rptOwnerName>Lin Chen-Hao Timothy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3F, NO. 11 KE JUNG RD., CHU-NAN SITE</rptOwnerStreet1>
            <rptOwnerStreet2>HSINCHU SCIENCE PARK, MIAO-LI COUNTY</rptOwnerStreet2>
            <rptOwnerCity>CHU-NAN</rptOwnerCity>
            <rptOwnerState>F5</rptOwnerState>
            <rptOwnerZipCode>350</rptOwnerZipCode>
            <rptOwnerStateDescription>TAIWAN, PROVINCE OF CHINA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2013-04-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares represent restricted stock units and will be settled in LEDS common stock upon vesting. 25% of the restricted stock units will vest on April 5 in each of 2014, 2015, 2016 and 2017, subject to the Reporting Person's continuous employment through each of the vesting dates. Vested shares will be delivered to the reporting person within the first open trading window following the vesting date, but in no event later than the 15th day of the 3rd month following the end of the Company's tax year that includes the vesting date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Timothy Lin</signatureName>
        <signatureDate>2013-04-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
