Exhibit 10.1

Rambus Inc.

4453 North First Street, Suite 100

San Jose, CA 95134

408-462-8000

rambus.com

March 27, 2026

Personal and Confidential

Sumeet Gagneja

Delivered via email

Dear Sumeet:

We are pleased to offer you a position with Rambus or one of its affiliates or subsidiaries (the “Company” or “Rambus”) as a Sr. Vice President and Chief Financial Officer. This letter will confirm the terms of your employment with the Company as follows:

Your starting base salary will be $19,791.67 semi-monthly, which over a full year would equal $475,000.08 (subject to the usual, required withholdings). You will also have a target bonus of 75% annually so long as you are an employee with the Company on the bonus payout date (as stated in the Corporate Incentive Plan). You will be classified as an exempt employee, reporting to Luc Seraphin, President and Chief Executive Officer. You will be eligible for Rambus’ standard benefits package including insurance and flex time-off.

You will also receive a hiring bonus of $300,000.00 which will be payable within 30 days of your start date. If you voluntarily terminate employment with Rambus for any reason within two years of receiving the hiring bonus payment, you will be required to repay the full amount of the hiring bonus payment received to the Company.

The Base Salary, Bonus and Hiring Bonus will be paid in accordance with the Company’s normal payroll practices and will be subject to the usual, required withholdings.

Rambus will grant you an award with a present value of $1,625,000.00 (USD) of Restricted Stock Units (“RSUs”) after the grant approval process is completed on the first business day of the first full month after your first day of employment at Rambus (“Grant Date”). The RSUs will vest annually in four equal installments of 25% each year for the four years following the date of the grant. The actual vesting schedule will be included when you receive your grant paperwork.

Rambus will also grant you an award with a present value of $3,000,000.00 (USD) of Restricted Stock Units (“RSUs”) after the grant approval process is completed on the first business day of the first full month after your first day of employment at Rambus (“Grant Date”). This one-time, RSU grant will vest annually in two equal installments of 50% each year for two years following the date of the grant. The actual vesting schedule will be included when you receive your grant paperwork.

Additionally, Rambus will grant you an award with a present value of $1,625,000.00 (USD) of Performance Stock Units (“PSUs”) after the grant approval process is completed on the first business day of the first full month after your first day of employment at Rambus. The PSUs are eligible to vest upon the completion of the performance period or as otherwise provided in the award agreement. The performance units vest solely based upon the Company’s relative TSR to the TSR of the SOX semiconductor index companies, excluding certain companies from that index focused on equipment and systems used in the production of semiconductors.

Enclosed is a copy of our Employment, Confidential Information, and Invention Assignment Agreement. This document assigns rights to all inventions to Rambus and requires you to keep confidential all matters regarding Rambus technology and business relationships until Rambus has made such information public. Please read, sign, and return this agreement on your first day of work.

Also enclosed is a copy of our Insider Trading Policy and Code of Business Conduct and Ethics. Please review, sign the acknowledgment form, and return on your first day of work.

For purposes of federal immigration law, you will be required to provide to Rambus documentary evidence of your identity and eligibility for employment in the United States. Such documentation must be provided to us within three business days of your date of hire, or your employment may be terminated. Please bring the appropriate documents on your first day of employment.

If you choose to accept this offer, your employment with Rambus will be voluntarily entered into and will be for no specified period. As a result, you will be an “at-will” employee and will be free to resign at any time, for any reason or for no reason, as you deem appropriate. Rambus will have a similar right and may conclude its employment relationship with you at any time, with or without cause or reason. In addition, the company has the sole right to take any personnel action (i.e., change your status, benefits, salary, and reporting structure) at any time, with or without advance notice, with or without cause, for any lawful reason.

You may accept this offer electronically. We will expect a reply from you no later than March 31, 2026, after which this offer will be closed. Please retain an extra copy of this letter for your personal records.

This offer replaces any existing and previously communicated or executed offer letters, expressed or implied agreements and is contingent upon the satisfactory background verification of criminal, education, employment, and reference check(s).

Sumeet, I know you can do a great job for us. I believe Rambus is an excellent company that can provide you with a continuing challenge and opportunity for personal growth.

I look forward to working with you.

Sincerely,

I have read and accept the above:

Proposed Start Date:

Exhibit 99.1

Rambus Appoints Sumeet Gagneja as Chief Financial Officer

Industry-proven finance leader brings deep semiconductor, data center and AI-driven computing ecosystem expertise to support long-term profitable growth

SAN JOSE, Calif., April 29, 2026 — Rambus Inc. (NASDAQ: RMBS) today announced the appointment of Sumeet Gagneja as senior vice president and chief financial officer, effective April 29, 2026. Mr. Gagneja joins Rambus with more than two decades of financial and operational leadership across the semiconductor, data center, and AI-driven computing ecosystem. Mr. Gagneja will oversee the company’s global finance organization, including financial strategy, capital allocation, and investor engagement, reporting to president and chief executive officer Luc Seraphin.

“Sumeet is a highly experienced finance leader with deep knowledge of the semiconductor and data center ecosystem,” said Luc Seraphin, president and chief executive officer of Rambus. “He brings a strong track record of helping companies scale with disciplined execution and a focus on value creation, and will be an outstanding addition to the leadership team as we continue to drive long-term profitable growth.”

Mr. Gagneja most recently served as divisional CFO for AMD’s Data Center segment. Previously, he was CFO of Western Digital’s Flash business and held senior finance leadership roles at Xilinx, Innovium, Maxim Integrated, Avago, and Intel. Across these roles, he supported capital allocation, mergers and acquisitions, operational planning, and investor and analyst engagement, bringing a disciplined and execution-focused approach to scaling complex technology businesses.

“I am excited to join Rambus and support its continued progress,” said Mr. Gagneja. “The company has a strong foundation, a differentiated portfolio, and a clear opportunity to deliver long-term profitable growth. I look forward to working with the leadership team to help drive disciplined execution and create durable value for shareholders.”

Gagneja holds a Master of Business Administration with high distinction from the University of Michigan Ross School of Business and a master’s degree in mechanical engineering from Wayne State University. He is a California Certified Public Accountant.

About Rambus Inc.

Rambus delivers industry-leading chips and silicon IP for the data center and AI infrastructure. With over three decades of advanced semiconductor experience, our products and technologies address the critical bottlenecks between memory and processing to accelerate data-intensive workloads. By enabling greater bandwidth, efficiency and security across next-generation computing platforms, we make data faster and safer. For more information, visit rambus.com.

Forward-Looking Statements

This release contains forward-looking statements under the Private Securities Litigation Reform Act of 1995, including those relating to Rambus’ expectations regarding business opportunities, the Company’s ability to deliver long-term, profitable growth, product and investment strategies, and the Company’s outlook and financial guidance for the second quarter of 2026 and related drivers, and the Company’s ability to effectively manage market challenges. Such forward-looking statements are based on current expectations, estimates and projections, management’s beliefs and certain assumptions made by the Company’s management. Actual results may differ materially. The Company’s business generally is subject to a number of risks which are described more fully in Rambus’ periodic reports filed with the Securities and Exchange Commission. The Company undertakes no obligation to update forward-looking statements to reflect events or circumstances after the date hereof.

Source: Rambus Inc.