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: Seraphin Luc (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-01	Common Stock	A	143744	—	Acquired	463507	Direct
2026-02-01	Common Stock	F	92523	$113.71	Disposed	370984	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 522 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.