X0306 4 2022-03-11 0 0001405495 InterDigital, Inc. IDCC 0001231579 BREZSKI RICHARD 200 BELLEVUE PARKWAY SUITE 300 WILMINGTON DE 19809 0 1 0 0 Chief Financial Officer Common Stock 2022-03-11 2022-03-11 4 F 0 7914 63.00 D 64764.1147 D Common Stock 2022-03-11 2022-03-11 4 F 0 1588 63.00 D 63176.1147 D Common Stock 2022-03-11 2022-03-11 4 M 0 8904 52.85 A 72080.1147 D Common Stock 2022-03-11 2022-03-11 4 M 0 1892 52.85 A 73972.1147 D Common Stock 1912 I By 401K Plan Employee Stock Option (Right-to-Buy) 52.85 2022-03-11 4 M 0 10796 0.00 A 2022-03-15 Common Stock 10796 0 D Represents a "net exercise" of outstanding stock options. The reporting person received 990 shares of common stock on net exercise of an option to purchase 8,904 shares of common stock. The Company withheld 7,914 shares of common stock underlying the option for payment of the exercise price and tax withholdings using the stock price on March 11, 2022 of $63.00. Represents a "net exercise" of outstanding stock options. The reporting person received 304 shares of common stock on net exercise of an option to purchase 1,892 shares of common stock. The Company withheld 1,588 shares of common stock underlying the option for payment of the exercise price and tax withholdings using the stock price on March 11, 2022 of $63.00. As of the most recently published account statement, the reporting person beneficially owned this number of whole shares of common stock pursuant to the InterDigital Savings and Protection Plan. The stock options vested in approximately three equal annual installments beginning on March 15, 2016. /s/ Amy A. Miraglia, Attorney-in-Fact for Richard J. Brezski 2022-03-15