<SEC-DOCUMENT>0001104659-14-038166.txt : 20140513
<SEC-HEADER>0001104659-14-038166.hdr.sgml : 20140513
<ACCEPTANCE-DATETIME>20140513163132
ACCESSION NUMBER:		0001104659-14-038166
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20140509
FILED AS OF DATE:		20140513
DATE AS OF CHANGE:		20140513

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DOAN TRUNG T
		CENTRAL INDEX KEY:			0001228895

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34992
		FILM NUMBER:		14837776
</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>2014-05-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001228895</rptOwnerCik>
            <rptOwnerName>DOAN TRUNG T</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>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2014-05-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>146250</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2225805</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2014-05-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>48750</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2274555</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. These restricted stock units are performance based. 50% of the restricted stock units will vest upon the attainment of positive EBITDA (i.e., earnings before interest, taxes, depreciation and amortization) by the Issuer for any of the fiscal years ending August 31, 2015, 2016 or 2017, and the remaining 50% of the restricted stock units will vest upon the attainment of positive net income by the Issuer for any of the fiscal years ending August 31, 2015, 2016 or 2017, based on the Issuer's financial results as announced in its earnings press release, and will become fully vested upon a change in control so long as the Reporting Person continues to provide continuous service through the closing of such change in control.</footnote>
        <footnote id="F2">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>
        <footnote id="F3">These shares represent restricted stock units and will be settled in LEDS common stock upon vesting. The restricted stock units will vest on May 9, 2015, subject to the Reporting Person's continuous employment through the vesting date, and will become fully vested upon a change in control. 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, attorney-in-fact</signatureName>
        <signatureDate>2014-05-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
