X0306 4 2022-03-15 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 2022-03-15 4 A 0 725.815 0.00 A 7359.1049 D Common Stock 2022-03-15 4 A 0 290.0824 0.00 A 7649.1873 D Common Stock 2022-03-15 4 A 0 115.3123 0.00 A 7764.4996 D Common Stock 2022-03-15 4 F 0 389 62.19 D 7375.4996 D Common Stock 2022-03-15 4 D 0 2.2097 62.19 D 7373.2899 D Common Stock 2022-03-15 4 F 0 394 62.19 D 6979.2899 D Common Stock 2022-03-15 4 D 0 2.3287 62.19 D 6976.9612 D Common Stock 2022-03-15 4 A 0 6272 0.00 A 13248.9612 D The transaction reported represents the partial vesting of awards of performance-based restricted stock units granted to the reporting person on March 15, 2019 and January 15, 2020 pursuant to the company's 2017 Equity Incentive Plan in accordance with the company's long-term compensation program. Based on the achievement level of the 2019 cycle performance goal, 93% of the reporting person's target performance-based restricted stock unit awards, or 684 restricted stock units, vested on March 15, 2022, together with 41.815 additional shares representing accrued dividend equivalent units. The transaction reported represents the partial vesting of awards of performance-based restricted stock units granted to the reporting person on March 31, 2021 and November 15, 2021 pursuant to the company's 2017 Equity Incentive Plan in accordance with the company's long-term compensation program. Based on the achievement of one Milestone goal, 25% of the reporting person's target Milestone restricted stock unit awards, or 288 restricted stock units, vested on March 15, 2022, together with 2.0824 additional shares representing accrued dividend equivalent units. The transaction reported represents the vesting of an award of performance-based restricted stock units granted to the reporting person on March 16, 2020 pursuant to the company's 2017 Equity Incentive Plan. 100% of the reporting person's target restricted stock unit award, or 111 restricted stock units, vested on March 15, 2022, together with 4.3123 additional shares representing accrued dividend equivalent units. The transaction reported reflects the withholding of restricted stock units in satisfaction of the reporting person's tax liability in connection with the transactions described in Note 1, 2 and 3. The transaction reported reflects the cash settlement of fractional shares in connection with the vesting of restricted stock units, as described in Notes 1, 2 and 3. The transaction reported reflects the withholding of restricted stock units in satisfaction of the reporting person's tax liability. The restricted stock units were granted to the reporting person on March 15, 2019, January 15, 2020, March 31, 2020 and March 31, 2021 pursuant to the company's 2017 Equity Incentive Plan in accordance with the company's long-term compensation program and vested on March 15, 2022, together with accrued dividend equivalents. The transaction reported reflects the cash settlement of fractional shares in connection with the vesting of restricted stock units, as described in Note 6. Restricted stock units granted pursuant to the company's 2017 Equity Incentive Plan in accordance with the company's long-term compensation program. /s/ Ariel E. Greenstein, Attorney-in-Fact for Joshua D. Schmidt 2022-03-17