UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant  ☒

Filed by a Party other than the Registrant  ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

Rambus Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of the Filing Fee (Check the appropriate box):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

                                                                        ATTN: SECRETARY                                              4453 NORTH FIRST STREET, SUITE 100                                              SAN JOSE, CALIFORNIA 95134                                      V02128-P87706  

You invested in RAMBUS INC. and it’s time to vote!

You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the stockholder meeting to be held on April 27, 2023.

Get informed before you vote

View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to April 13, 2023. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy.

Smartphone users		Vote Virtually at the Meeting* April 27, 2023 9:00 a.m. Pacific Time
Point your camera here and
vote without entering a
control number
	Virtually at:         www.virtualshareholdermeeting.com/RMBS2023

    *Please check the meeting materials for any special requirements for meeting attendance.

V1.1

 Vote at www.ProxyVote.com

 THIS IS NOT A VOTABLE BALLOT

This is an overview of the proposals being presented at the

upcoming stockholder meeting. Please follow the instructions on

the reverse side to vote these important matters.

Voting Items		Board Recommends
1.	Election of Directors
	Nominees:
1a.	Emiko Higashi		For
1b.	Steven Laub		For
1c.	Eric Stang		For
2.	Ratification of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2023.		For
3.	Advisory vote to approve named executive officer compensation.		For
4.	Advisory vote on the frequency of holding an advisory vote on named executed officer compensation.		Year
5.	Amendment of the Rambus 2015 Equity Incentive Plan to increase the number of shares reserved for issuance thereunder by 5,210,000 and adopt a new ten-year term.		For
6.	Amendment and restatement of the Company’s Amended and Restated Certificate of Incorporation, as amended, to reflect recently adopted Delaware law provisions regarding officer exculpation.		For
NOTE: Such other business as may properly come before the meeting or any adjournment or postponement thereof.

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V02129-P87706