<SEC-DOCUMENT>0001179110-15-008013.txt : 20150518
<SEC-HEADER>0001179110-15-008013.hdr.sgml : 20150518
<ACCEPTANCE-DATETIME>20150518173219
ACCESSION NUMBER:		0001179110-15-008013
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150515
FILED AS OF DATE:		20150518
DATE AS OF CHANGE:		20150518

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RAMBUS INC
		CENTRAL INDEX KEY:			0000917273
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				943112828
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1050 ENTERPRISE WAY, SUITE 700
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94089
		BUSINESS PHONE:		408-462-8000

	MAIL ADDRESS:	
		STREET 1:		1050 ENTERPRISE WAY, SUITE 700
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94089

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kim Jae
		CENTRAL INDEX KEY:			0001570465

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22339
		FILM NUMBER:		15874364

	MAIL ADDRESS:	
		STREET 1:		C/O RAMBUS INC.
		STREET 2:		1050 ENTERPRISE WAY, SUITE 700
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94089
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
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            <rptOwnerZipCode>94089</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP &amp; GC</officerTitle>
            <otherText></otherText>
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            <exerciseDate>
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            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
                    <value>2529</value>
                </underlyingSecurityShares>
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                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
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                <value>Common Stock (right to buy)</value>
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                <value>8.76</value>
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                    <value>3294</value>
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                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-02-03</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3294</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>39135</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
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    <footnotes>
        <footnote id="F1">The sales reported on this Form 4 are pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 6, 2015.</footnote>
        <footnote id="F2">The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $14.09 to $14.25. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F3">The sale price reported in Column 4 of Table 1 represents the exact sale price of the shares sold.</footnote>
        <footnote id="F4">Ten percent of the shares subject to the option vested on August 1, 2012 and the remaining shares vested monthly thereafter until fully vested on February 1, 2016.</footnote>
        <footnote id="F5">Ten percent of the shares subject to the option vested on August 1, 2013 and the remaining shares vested monthly thereafter until fully vested on February 1, 2017.</footnote>
        <footnote id="F6">One-third of the shares subject to the option vested on June 22, 2013 and the remaining shares vested monthly thereafter until fully vested on June 22, 2015.</footnote>
        <footnote id="F7">Ten percent of the shares subject to the option vested on August 3, 2014 and the remaining shares vested monthly thereafter until fully vested on February 3, 2018.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ William Krause, by power of attorney</signatureName>
        <signatureDate>2015-05-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
