X0306 4 2020-01-17 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 2020-01-17 4 M 0 7362 44.19 A 49175.8887 D Common Stock 2020-01-17 4 F 0 6139 59.66 D 43036.8887 D Common Stock 1733 I By 401(k) Plan Employee Stock Option (Right to Buy) 44.19 2020-01-17 4 M 0 7362 0.00 D 2020-01-18 Common Stock 7362 0 D Represents a "net exercise" of outstanding stock option. The reporting person received 1,223 shares of common stock on net exercise of option to purchase 7,362 shares of common stock. The Company withheld 6,139 shares of common stock underlying the option for payment of the exercise price and tax withholdings using a stock price on January 17, 2020 of $59.66. 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 option vested in three equal annual installments beginning on January 18, 2014. /s/ Giovanni M. Insana, Attorney-in-Fact for Richard J. Brezski 2020-01-22