<SEC-DOCUMENT>0000899243-18-019512.txt : 20180705
<SEC-HEADER>0000899243-18-019512.hdr.sgml : 20180705
<ACCEPTANCE-DATETIME>20180705193139
ACCESSION NUMBER:		0000899243-18-019512
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180628
FILED AS OF DATE:		20180705
DATE AS OF CHANGE:		20180705

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Seraphin Luc
		CENTRAL INDEX KEY:			0001341984

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22339
		FILM NUMBER:		18941567

	MAIL ADDRESS:	
		STREET 1:		KINGSWOOD
		STREET 2:		KINGS RIDE
		CITY:			ASCOT BERKS
		STATE:			X0
		ZIP:			SL5 8AD

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
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2018-06-28</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000917273</issuerCik>
        <issuerName>RAMBUS INC</issuerName>
        <issuerTradingSymbol>RMBS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001341984</rptOwnerCik>
            <rptOwnerName>Seraphin Luc</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O RAMBUS INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1050 ENTERPRISE WAY, SUITE 700</rptOwnerStreet2>
            <rptOwnerCity>SUNNYVALE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94089</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Interim CEO, SVP &amp; GM</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>136142</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.26</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2025-02-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2400</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.31</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-02-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>13209</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.80</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2027-02-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>34768</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.84</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-02-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>49537</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The reported shares are represented by restricted stock units, or RSUs, which vest as follows: (i) 14,862 RSUs vest in two equal annual installments beginning on December 1, 2018 or the first business day thereafter; (ii) 31,682 RSUs vest on February 1, 2019 or the first business day thereafter; (iii) 12,182 RSUs vest in two equal annual installments beginning on February 1, 2019 or the first business day thereafter; (iv) 20,445 RSUs vest in three equal annual installments beginning on February 1, 2019 or the first business day thereafter; (v) 26,304 RSUs vest in four equal annual installments beginnging on February 1, 2019 or the first business day thereafter; and (vi) 30,667 RSUs vest on February 1, 2020 or the first business day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock.</footnote>
        <footnote id="F2">One-tenth of the shares subject to the option vested on August 2, 2015 and the remaining shares vest in equal monthly installments through February 2, 2019.</footnote>
        <footnote id="F3">One-tenth of the shares subject to the option vested on August 1, 2016 and the remaining shares vest in equal monthly installments through February 1, 2020.</footnote>
        <footnote id="F4">One-tenth of the shares subject to the option vested on August 1, 2017 and the remaining shares vest in equal monthly installments through February 1, 2021.</footnote>
        <footnote id="F5">One-tenth of the shares subject to the option vest on August 1, 2018 and the remaining shares vest in equal monthly installments through February 1, 2022.</footnote>
    </footnotes>

    <remarks>Exhibit 24 - Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Kirk Williams, by power of attorney</signatureName>
        <signatureDate>2018-07-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>attachment1.htm
<DESCRIPTION>EX-24 DOCUMENT
<TEXT>
<HTML>
<HEAD>
</HEAD>
<BODY>
<PRE>
                                                                      Exhibit 24

                               POWER OF ATTORNEY

     The undersigned, as a Section 16 reporting person of Rambus Inc. (the
"Company"), hereby constitutes and appoints Jae Kim, Kirk Williams and Keith
Jones, and each of them, as the undersigned's true and lawful attorney-in-fact
to:

     1.  complete and execute Forms 3, 4 and 5 and other forms and all
         amendments thereto as such attorney-in-fact shall in his discretion
         determine to be required or advisable pursuant to Section 16 of the
         Securities Exchange Act of 1934 (as amended) and the rules and
         regulations promulgated thereunder, or any successor laws and
         regulations, as a consequence of the undersigned's ownership,
         acquisition or disposition of securities of the Company; and

     2.  do all acts necessary in order to file such forms with the SEC, any
         securities exchange or national association, the Company and such other
         person or agency as the attorneys-in-fact shall deem appropriate.

     The undersigned hereby ratifies and confirms all that said attorneys-in-
fact and agents shall do or cause to be done by virtue hereof.  The undersigned
acknowledges that the foregoing attorneys-in-fact, in serving in such capacity
at the request of the undersigned, are not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to comply with Section 16 of
the Securities Exchange Act of 1934, as amended.

     This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
Company and the foregoing attorneys-in-fact.

     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of the date written below.


                                            Signature: /s/ Luc Seraphin
                                                       -------------------------

                                            Print Name: Luc Seraphin
                                                        ------------------------

                                            Date: July 2, 2018
                                                  ------------------------------






</PRE>
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</TEXT>
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</SEC-DOCUMENT>
