X0206 3 2022-08-01 0 0000917273 RAMBUS INC RMBS 0001941085 Lynch Desmond C/O RAMBUS INC. 4453 NORTH FIRST STREET, SUITE 100 SAN JOSE CA 95134 0 1 0 0 SVP, CFO Common Stock 34895 D The reported shares are represented by 8,268 shares of RMBS stock, and restricted stock units, or RSUs, which vest as follows: (i) 9,000 RSUs vest in two equal installments beginning on March 2, 2023 or the first business day thereafter; (ii) 8,825 RSUs vest in three equal installments beginning on February 1, 2023 or the first business day thereafter; (iii) 8,802 RSUs vest in four equal annual installments beginning on February 1, 2023 or the first business day thereafter. Each RSU represents a contingent right to receive one share of RMBS common stock. /s/Brian Wu, by power of attorney 2022-08-09