RAMBUS INC — Director's Dealing 2026

Feb 3, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RAMBUS INC (RMBS)
CIK: 0000917273
Period of Report: 2026-02-01

Reporting Person: Lynch Desmond (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-01	Common Stock	A	34554	—	Acquired	89996	Direct
2026-02-01	Common Stock	F	22105	$113.71	Disposed	67891	Direct

Footnotes

F1: The shares are represented by performance restricted stock units, or PRSUs, all of which vest on February 1, 2026 based upon assessed achievement of the Company's performance metrics and continued service to the Company through the vesting date. Each PRSU represents a contingent right to receive one share of RMBS common stock.

F2: Includes an exempt transaction of 86 shares acquired through the Rambus, Inc. 2015 Employee Stock Purchase Plan

F3: The shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units, or RSUs.