X0306 4 2019-10-01 0 0000917273 RAMBUS INC RMBS 0001188095 KISSNER CHARLES 1050 ENTERPRISE WAY, SUITE 700 SUNNYVALE CA 94089 1 0 0 0 Common Stock 14156 D Common Stock 2019-10-01 4 S 0 7055 13.2473 D 64292 I See footnote The sale report in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on November 2, 2018. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.065 to $13.42, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. The shares are held directly by Kissner and Associates LLC for which the Reporting Person serves as the owner of the company. /s/ Kirk Williams, by power of attorney 2019-10-02