INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

Shannon River Fund Management LLC's Holding History (CIK: 0001301050)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 53,490 Value ($000) $17,030 Avg Close $353.55 Range $314.37 - $412.60

Q3 2025

Shares 178,720 Value ($000) $61,700 Avg Close $271.66 Range $213.06 - $360.30

Q2 2025

Shares 236,571 Value ($000) $53,046 Avg Close $211.87 Range $180.60 - $237.50

Q1 2025

Shares 225,002 Value ($000) $46,519 Avg Close $201.31 Range $169.58 - $231.97

Q4 2024

Shares 381,645 Value ($000) $73,932 Avg Close $174.85 Range $140.47 - $203.90

Q3 2024

Shares 472,152 Value ($000) $66,871 Avg Close $131.08 Range $115.10 - $143.96

Q2 2024

Shares 443,459 Value ($000) $51,690 Avg Close $106.87 Range $95.33 - $119.10

Q1 2024

Shares 368,809 Value ($000) $39,263 Avg Close $105.70 Range $100.55 - $119.86

Q4 2023

Shares 472,807 Value ($000) $51,318 Avg Close $92.54 Range $74.65 - $111.79

Q3 2023

Shares 642,265 Value ($000) $51,535 Avg Close $86.92 Range $79.20 - $98.69

Q2 2023

Shares 618,450 Value ($000) $59,711 Avg Close $80.98 Range $66.82 - $97.62

Q1 2023

Shares 642,638 Value ($000) $46,848 Avg Close $69.61 Range $52.13 - $75.74

Q4 2022

Shares 491,748 Value ($000) $24,332 Avg Close $48.77 Range $43.87 - $51.48

Q2 2022

Shares 298,531 Value ($000) $18,151 Avg Close $61.35 Range $56.13 - $67.14

Q1 2022

Shares 475,889 Value ($000) $30,362 Avg Close $66.45 Range $61.36 - $73.97

Q4 2021

Shares 689,558 Value ($000) $49,393 Avg Close $69.71 Range $65.79 - $74.27

Q3 2021

Shares 706,089 Value ($000) $47,887 Avg Close $69.30 Range $63.34 - $75.25

Q2 2021

Shares 614,150 Value ($000) $44,851 Avg Close $73.91 Range $63.74 - $85.75

Q1 2021

Shares 1,198,674 Value ($000) $76,056 Avg Close $65.36 Range $59.93 - $69.02

Q4 2020

Shares 1,243,592 Value ($000) $75,461 Avg Close $59.88 Range $54.37 - $63.74

Q3 2020

Shares 1,288,546 Value ($000) $73,524 Avg Close $60.07 Range $54.62 - $67.06

Q2 2020

Shares 1,313,863 Value ($000) $74,404 Avg Close $53.16 Range $41.61 - $62.66

Q1 2020

Shares 1,210,396 Value ($000) $54,020 Avg Close $52.66 Range $31.04 - $64.22

Q4 2019

Shares 999,623 Value ($000) $54,470 Avg Close $55.25 Range $49.84 - $60.33

Q3 2019

Shares 669,572 Value ($000) $35,132 Avg Close $56.51 Range $47.02 - $66.95

Q2 2019

Shares 453,247 Value ($000) $29,189 Avg Close $66.69 Range $62.43 - $72.66

Q2 2016

Shares 150,000 Value ($000) $8,352 Avg Close $56.52 Range $51.97 - $59.83

Q1 2016

Shares 654,488 Value ($000) $36,422 Avg Close $48.28 Range $41.01 - $55.85

Q4 2015

Shares 654,488 Value ($000) $32,096 Avg Close $50.76 Range $46.78 - $54.95

Q3 2015

Shares 885,000 Value ($000) $44,781 Avg Close $51.62 Range $44.28 - $57.77

Q2 2015

Shares 885,000 Value ($000) $50,348 Avg Close $55.81 Range $49.57 - $60.69

Q1 2015

Shares 735,000 Value ($000) $37,294 Avg Close $51.89 Range $47.76 - $56.27

Q4 2014

Shares 735,000 Value ($000) $38,882 Avg Close $48.18 Range $38.64 - $54.90

Q3 2014

Shares 1,150,000 Value ($000) $45,793 Avg Close $44.00 Range $39.40 - $48.93

Q2 2014

Shares 1,150,000 Value ($000) $54,970 Avg Close $38.65 Range $31.45 - $49.10

Q1 2014

Shares 1,442,000 Value ($000) $47,745 Avg Close $29.77 Range $26.25 - $33.60

Q4 2013

Shares 591,700 Value ($000) $17,449 Avg Close $33.88 Range $28.53 - $39.87

Q3 2013

Shares 454,561 Value ($000) $16,973 Avg Close $37.73 Range $35.02 - $41.24

Q2 2013

Shares 513,766 Value ($000) $22,940 Avg Close $44.80 Range $38.60 - $48.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	53,490	$17,030	$353.55	$314.37 - $412.60
Q3 2025	178,720	$61,700	$271.66	$213.06 - $360.30
Q2 2025	236,571	$53,046	$211.87	$180.60 - $237.50
Q1 2025	225,002	$46,519	$201.31	$169.58 - $231.97
Q4 2024	381,645	$73,932	$174.85	$140.47 - $203.90
Q3 2024	472,152	$66,871	$131.08	$115.10 - $143.96
Q2 2024	443,459	$51,690	$106.87	$95.33 - $119.10
Q1 2024	368,809	$39,263	$105.70	$100.55 - $119.86
Q4 2023	472,807	$51,318	$92.54	$74.65 - $111.79
Q3 2023	642,265	$51,535	$86.92	$79.20 - $98.69
Q2 2023	618,450	$59,711	$80.98	$66.82 - $97.62
Q1 2023	642,638	$46,848	$69.61	$52.13 - $75.74
Q4 2022	491,748	$24,332	$48.77	$43.87 - $51.48
Q2 2022	298,531	$18,151	$61.35	$56.13 - $67.14
Q1 2022	475,889	$30,362	$66.45	$61.36 - $73.97
Q4 2021	689,558	$49,393	$69.71	$65.79 - $74.27
Q3 2021	706,089	$47,887	$69.30	$63.34 - $75.25
Q2 2021	614,150	$44,851	$73.91	$63.74 - $85.75
Q1 2021	1,198,674	$76,056	$65.36	$59.93 - $69.02
Q4 2020	1,243,592	$75,461	$59.88	$54.37 - $63.74
Q3 2020	1,288,546	$73,524	$60.07	$54.62 - $67.06
Q2 2020	1,313,863	$74,404	$53.16	$41.61 - $62.66
Q1 2020	1,210,396	$54,020	$52.66	$31.04 - $64.22
Q4 2019	999,623	$54,470	$55.25	$49.84 - $60.33
Q3 2019	669,572	$35,132	$56.51	$47.02 - $66.95
Q2 2019	453,247	$29,189	$66.69	$62.43 - $72.66
Q2 2016	150,000	$8,352	$56.52	$51.97 - $59.83
Q1 2016	654,488	$36,422	$48.28	$41.01 - $55.85
Q4 2015	654,488	$32,096	$50.76	$46.78 - $54.95
Q3 2015	885,000	$44,781	$51.62	$44.28 - $57.77
Q2 2015	885,000	$50,348	$55.81	$49.57 - $60.69
Q1 2015	735,000	$37,294	$51.89	$47.76 - $56.27
Q4 2014	735,000	$38,882	$48.18	$38.64 - $54.90
Q3 2014	1,150,000	$45,793	$44.00	$39.40 - $48.93
Q2 2014	1,150,000	$54,970	$38.65	$31.45 - $49.10
Q1 2014	1,442,000	$47,745	$29.77	$26.25 - $33.60
Q4 2013	591,700	$17,449	$33.88	$28.53 - $39.87
Q3 2013	454,561	$16,973	$37.73	$35.02 - $41.24
Q2 2013	513,766	$22,940	$44.80	$38.60 - $48.60