X0206 3 2021-10-19 0 0001405495 InterDigital, Inc. IDCC 0001889993 Schmidt Joshua D. 200 BELLEVUE PARKWAY SUITE 300 WILMINGTON DE 19809 0 1 0 0 CLO & Corp Sec Common Stock 2803.7101 D Consists of restricted stock units granted pursuant to the company's 2017 Equity Incentive Plan and restricted stock units received pursuant to dividend equivalents credited on unvested restricted stock units held by the reporting person. Dividend equivalents accrue with respect to unvested restricted stock units when and as cash dividends are paid on the company's common stock. /s/ Ariel E. Greenstein, Attorney-in-Fact for Joshua D. Schmidt 2021-10-26