X0306 4 2022-04-01 0 0000917273 RAMBUS INC RMBS 0001234045 STANG ERIC B C/O RAMBUS INC. 4453 NORTH FIRST STREET, SUITE 100 SAN JOSE CA 95134 1 0 0 0 Common Stock 2022-04-01 4 A 0 5408 0.00 A 27873 D Common Stock 40680 I See Footnote The shares are represented by restricted stock units, or RSUs, all of which vest April 1, 2023 or the first business day thereafter. Each RSU represents the contingent right to receive one share of RMBS common stock. Shares held directly by the Stang Family Trust dated September 2, 2004 for which the Reporting Person serves as a trustee. /s/ Keith Jones, by power of attorney 2022-04-04