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| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 03/31/2021 | INTERDIGITAL INC. | IDCC | 0 | -235,295 | 0 | -14,278,000 | |
| 12/31/2020 | INTERDIGITAL INC. | IDCC | 235,295 | 0 | 14,278,000 | 852,000 | $60.68 |
| 09/30/2020 | INTERDIGITAL INC. | IDCC | 235,295 | 0 | 13,426,000 | 101,000 | $57.06 |
| 06/30/2020 | INTERDIGITAL INC. | IDCC | 235,295 | 0 | 13,325,000 | 2,824,000 | $56.63 |
| 03/31/2020 | INTERDIGITAL INC. | IDCC | 235,295 | 11,970 | 10,501,000 | -1,668,000 | $44.63 |
| 12/31/2019 | INTERDIGITAL INC. | IDCC | 223,325 | -822 | 12,169,000 | 408,000 | $54.49 |
| 09/30/2019 | INTERDIGITAL INC. | IDCC | 224,147 | 28,244 | 11,761,000 | -855,000 | $52.47 |
| 06/30/2019 | INTERDIGITAL INC. | IDCC | 195,903 | 195,903 | 12,616,000 | 12,616,000 | $64.40 |
| 03/31/2019 | INTERDIGITAL INC. | IDCC | 0 | -240,048 | 0 | -15,946,000 | |
| 12/31/2018 | INTERDIGITAL INC. | IDCC | 240,048 | -273,185 | 15,946,000 | -25,113,000 | $66.43 |
| 09/30/2018 | INTERDIGITAL INC. | IDCC | 513,233 | -96,311 | 41,059,000 | -8,253,000 | $80.00 |
| 06/30/2018 | INTERDIGITAL INC. | IDCC | 609,544 | -4,354 | 49,312,000 | 4,129,000 | $80.90 |
| 03/31/2018 | INTERDIGITAL INC. | IDCC | 613,898 | 52,596 | 45,183,000 | 2,440,000 | $73.60 |
| 12/31/2017 | INTERDIGITAL INC. | IDCC | 561,302 | 163,452 | 42,743,000 | 13,402,000 | $76.15 |
| 09/30/2017 | INTERDIGITAL INC. | IDCC | 397,850 | 17,473 | 29,341,000 | -62,000 | $73.75 |
| 06/30/2017 | INTERDIGITAL INC. | IDCC | 380,377 | -61,912 | 29,403,000 | -8,767,000 | $77.30 |
| 03/31/2017 | INTERDIGITAL INC. | IDCC | 442,289 | -40,590 | 38,170,000 | -5,941,000 | $86.30 |
| 12/31/2016 | INTERDIGITAL INC. | IDCC | 482,879 | -200,935 | 44,111,000 | -10,047,000 | $91.35 |
| 09/30/2016 | INTERDIGITAL INC. | IDCC | 683,814 | -754,287 | 54,158,000 | -25,915,000 | $79.20 |
| 06/30/2016 | INTERDIGITAL INC. | IDCC | 1,438,101 | 1,438,101 | 80,073,000 | 80,073,000 | $55.68 |
| 03/31/2016 | INTERDIGITAL INC. | IDCC | 1,492,091 | -109,130 | 83,035,000 | 4,511,000 | $55.65 |
| 12/31/2015 | INTERDIGITAL INC. | IDCC | 1,601,221 | -362,727 | 78,524,000 | -2,195,000 | $49.04 |
| 09/30/2015 | INTERDIGITAL INC. | IDCC | 1,707,850 | -256,098 | 86,417,000 | 5,698,000 | $50.60 |
| 06/30/2015 | INTERDIGITAL INC. | IDCC | 0 | -1,913,200 | 0 | -97,076,000 | |
| 03/31/2015 | INTERDIGITAL INC. | IDCC | 1,913,200 | -652,400 | 97,076,000 | -38,644,000 | $50.74 |
| 12/31/2014 | INTERDIGITAL INC. | IDCC | 2,565,600 | 601,652 | 135,720,000 | 55,001,000 | $52.90 |
| 09/30/2014 | INTERDIGITAL INC. | IDCC | 3,104,100 | 1,140,152 | 123,606,000 | 42,887,000 | $39.82 |
| 06/30/2014 | INTERDIGITAL INC. | IDCC | 2,885,221 | 921,273 | 137,914,000 | 57,195,000 | $47.80 |
| 03/31/2014 | INTERDIGITAL INC. | IDCC | 2,510,000 | 546,052 | 83,106,000 | 2,387,000 | $33.11 |
| 12/31/2013 | INTERDIGITAL INC. | IDCC | 2,267,100 | 303,152 | 66,857,000 | -13,862,000 | $29.49 |
| 09/30/2013 | INTERDIGITAL INC. | IDCC | 1,926,248 | -37,700 | 71,907,000 | -8,812,000 | $37.33 |
| 06/30/2013 | INTERDIGITAL INC. | IDCC | 1,989,648 | 25,700 | 88,838,000 | 8,119,000 | $44.65 |
| 03/31/2013 | INTERDIGITAL INC. | IDCC | 2,010,948 | 47,000 | 96,184,000 | 15,465,000 | $47.83 |
| 12/31/2012 | INTERDIGITAL INC. | IDCC | 1,963,948 | 1,000 | 80,719,000 | 7,540,000 | $41.10 |
| 09/30/2012 | INTERDIGITAL INC. | IDCC | 1,962,948 | -31,000 | 73,179,000 | 14,338,000 | $37.28 |
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