INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2025

Shares 25,438 Value ($000) $8,099 Avg Close $353.55 Range $314.37 - $412.60

Q3 2025

Shares 25,469 Value ($000) $8,793 Avg Close $271.66 Range $213.06 - $360.30

Q2 2025

Shares 25,459 Value ($000) $5,709 Avg Close $211.87 Range $180.60 - $237.50

Q1 2025

Shares 25,428 Value ($000) $5,257 Avg Close $201.31 Range $169.58 - $231.97

Q4 2024

Shares 23,510 Value ($000) $4,554 Avg Close $174.85 Range $140.47 - $203.90

Q3 2024

Shares 23,876 Value ($000) $3,382 Avg Close $131.08 Range $115.10 - $143.96

Q2 2024

Shares 24,862 Value ($000) $2,898 Avg Close $106.87 Range $95.33 - $119.10

Q1 2024

Shares 25,707 Value ($000) $2,737 Avg Close $105.70 Range $100.55 - $119.86

Q4 2023

Shares 27,867 Value ($000) $3,025 Avg Close $92.54 Range $74.65 - $111.79

Q3 2023

Shares 29,547 Value ($000) $2,371 Avg Close $86.92 Range $79.20 - $98.69

Q2 2023

Shares 35,125 Value ($000) $3,391 Avg Close $80.98 Range $66.82 - $97.62

Q1 2023

Shares 37,109 Value ($000) $2,705 Avg Close $69.61 Range $52.13 - $75.74

Q4 2022

Shares 37,641 Value ($000) $1,862 Avg Close $48.77 Range $43.87 - $51.48

Q3 2022

Shares 38,291 Value ($000) $1,548 Avg Close $53.92 Range $40.23 - $64.00

Q2 2022

Shares 39,315 Value ($000) $2,390 Avg Close $61.35 Range $56.13 - $67.14

Q1 2022

Shares 39,189 Value ($000) $2,500 Avg Close $66.45 Range $61.36 - $73.97

Q4 2021

Shares 42,830 Value ($000) $3,068 Avg Close $69.71 Range $65.79 - $74.27

Q3 2021

Shares 41,995 Value ($000) $2,848 Avg Close $69.30 Range $63.34 - $75.25

Q2 2021

Shares 42,626 Value ($000) $3,113 Avg Close $73.91 Range $63.74 - $85.75

Q1 2021

Shares 46,429 Value ($000) $2,946 Avg Close $65.36 Range $59.93 - $69.02

Q4 2020

Shares 46,676 Value ($000) $2,832 Avg Close $59.88 Range $54.37 - $63.74

Q3 2020

Shares 46,438 Value ($000) $2,650 Avg Close $60.07 Range $54.62 - $67.06

Q2 2020

Shares 46,423 Value ($000) $2,629 Avg Close $53.16 Range $41.61 - $62.66

Q1 2020

Shares 47,415 Value ($000) $2,116 Avg Close $52.66 Range $31.04 - $64.22

Q4 2019

Shares 47,650 Value ($000) $2,596 Avg Close $55.25 Range $49.84 - $60.33

Q3 2019

Shares 48,613 Value ($000) $2,551 Avg Close $56.51 Range $47.02 - $66.95

Q2 2019

Shares 48,953 Value ($000) $3,153 Avg Close $66.69 Range $62.43 - $72.66

Q1 2019

Shares 51,622 Value ($000) $3,406 Avg Close $69.51 Range $64.12 - $74.03

Q4 2018

Shares 54,179 Value ($000) $3,599 Avg Close $72.85 Range $62.34 - $80.75

Q3 2018

Shares 52,957 Value ($000) $4,237 Avg Close $81.96 Range $78.65 - $85.85

Q2 2018

Shares 53,012 Value ($000) $4,289 Avg Close $79.55 Range $71.75 - $85.50

Q1 2018

Shares 52,759 Value ($000) $3,883 Avg Close $76.57 Range $69.33 - $81.70

Q4 2017

Shares 54,608 Value ($000) $4,158 Avg Close $74.74 Range $70.60 - $78.10

Q3 2017

Shares 55,487 Value ($000) $4,092 Avg Close $73.19 Range $67.55 - $81.85

Q2 2017

Shares 61,338 Value ($000) $4,741 Avg Close $83.80 Range $77.20 - $93.00

Q1 2017

Shares 68,372 Value ($000) $5,901 Avg Close $89.86 Range $83.15 - $102.30

Q4 2016

Shares 71,472 Value ($000) $6,529 Avg Close $80.20 Range $68.10 - $98.00

Q3 2016

Shares 73,372 Value ($000) $5,811 Avg Close $66.77 Range $52.33 - $79.92

Q2 2016

Shares 72,772 Value ($000) $4,052 Avg Close $56.52 Range $51.97 - $59.83

Q1 2016

Shares 76,674 Value ($000) $4,267 Avg Close $48.28 Range $41.01 - $55.85

Q4 2015

Shares 66,808 Value ($000) $3,276 Avg Close $50.76 Range $46.78 - $54.95

Q3 2015

Shares 65,772 Value ($000) $3,328 Avg Close $51.62 Range $44.28 - $57.77

Q2 2015

Shares 65,872 Value ($000) $3,747 Avg Close $55.81 Range $49.57 - $60.69

Q1 2015

Shares 68,131 Value ($000) $3,457 Avg Close $51.89 Range $47.76 - $56.27

Q4 2014

Shares 69,231 Value ($000) $3,662 Avg Close $48.18 Range $38.64 - $54.90

Q3 2014

Shares 74,712 Value ($000) $2,975 Avg Close $44.00 Range $39.40 - $48.93

Q2 2014

Shares 73,888 Value ($000) $3,532 Avg Close $38.65 Range $31.45 - $49.10

Q1 2014

Shares 74,888 Value ($000) $2,480 Avg Close $29.77 Range $26.25 - $33.60

Q4 2013

Shares 74,488 Value ($000) $2,197 Avg Close $33.88 Range $28.53 - $39.87

Q3 2013

Shares 73,988 Value ($000) $2,762 Avg Close $37.73 Range $35.02 - $41.24

Q2 2013

Shares 71,709 Value ($000) $3,202 Avg Close $44.80 Range $38.60 - $48.60

Q1 2013

Shares 71,208 Value ($000) $3,406 Avg Close $45.18 Range $41.67 - $48.68

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	25,438	$8,099	$353.55	$314.37 - $412.60
Q3 2025	25,469	$8,793	$271.66	$213.06 - $360.30
Q2 2025	25,459	$5,709	$211.87	$180.60 - $237.50
Q1 2025	25,428	$5,257	$201.31	$169.58 - $231.97
Q4 2024	23,510	$4,554	$174.85	$140.47 - $203.90
Q3 2024	23,876	$3,382	$131.08	$115.10 - $143.96
Q2 2024	24,862	$2,898	$106.87	$95.33 - $119.10
Q1 2024	25,707	$2,737	$105.70	$100.55 - $119.86
Q4 2023	27,867	$3,025	$92.54	$74.65 - $111.79
Q3 2023	29,547	$2,371	$86.92	$79.20 - $98.69
Q2 2023	35,125	$3,391	$80.98	$66.82 - $97.62
Q1 2023	37,109	$2,705	$69.61	$52.13 - $75.74
Q4 2022	37,641	$1,862	$48.77	$43.87 - $51.48
Q3 2022	38,291	$1,548	$53.92	$40.23 - $64.00
Q2 2022	39,315	$2,390	$61.35	$56.13 - $67.14
Q1 2022	39,189	$2,500	$66.45	$61.36 - $73.97
Q4 2021	42,830	$3,068	$69.71	$65.79 - $74.27
Q3 2021	41,995	$2,848	$69.30	$63.34 - $75.25
Q2 2021	42,626	$3,113	$73.91	$63.74 - $85.75
Q1 2021	46,429	$2,946	$65.36	$59.93 - $69.02
Q4 2020	46,676	$2,832	$59.88	$54.37 - $63.74
Q3 2020	46,438	$2,650	$60.07	$54.62 - $67.06
Q2 2020	46,423	$2,629	$53.16	$41.61 - $62.66
Q1 2020	47,415	$2,116	$52.66	$31.04 - $64.22
Q4 2019	47,650	$2,596	$55.25	$49.84 - $60.33
Q3 2019	48,613	$2,551	$56.51	$47.02 - $66.95
Q2 2019	48,953	$3,153	$66.69	$62.43 - $72.66
Q1 2019	51,622	$3,406	$69.51	$64.12 - $74.03
Q4 2018	54,179	$3,599	$72.85	$62.34 - $80.75
Q3 2018	52,957	$4,237	$81.96	$78.65 - $85.85
Q2 2018	53,012	$4,289	$79.55	$71.75 - $85.50
Q1 2018	52,759	$3,883	$76.57	$69.33 - $81.70
Q4 2017	54,608	$4,158	$74.74	$70.60 - $78.10
Q3 2017	55,487	$4,092	$73.19	$67.55 - $81.85
Q2 2017	61,338	$4,741	$83.80	$77.20 - $93.00
Q1 2017	68,372	$5,901	$89.86	$83.15 - $102.30
Q4 2016	71,472	$6,529	$80.20	$68.10 - $98.00
Q3 2016	73,372	$5,811	$66.77	$52.33 - $79.92
Q2 2016	72,772	$4,052	$56.52	$51.97 - $59.83
Q1 2016	76,674	$4,267	$48.28	$41.01 - $55.85
Q4 2015	66,808	$3,276	$50.76	$46.78 - $54.95
Q3 2015	65,772	$3,328	$51.62	$44.28 - $57.77
Q2 2015	65,872	$3,747	$55.81	$49.57 - $60.69
Q1 2015	68,131	$3,457	$51.89	$47.76 - $56.27
Q4 2014	69,231	$3,662	$48.18	$38.64 - $54.90
Q3 2014	74,712	$2,975	$44.00	$39.40 - $48.93
Q2 2014	73,888	$3,532	$38.65	$31.45 - $49.10
Q1 2014	74,888	$2,480	$29.77	$26.25 - $33.60
Q4 2013	74,488	$2,197	$33.88	$28.53 - $39.87
Q3 2013	73,988	$2,762	$37.73	$35.02 - $41.24
Q2 2013	71,709	$3,202	$44.80	$38.60 - $48.60
Q1 2013	71,208	$3,406	$45.18	$41.67 - $48.68