INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

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

Q4 2025

Shares 28,300 Value ($000) $9,010 Avg Close $353.55 Range $314.37 - $412.60

Q3 2025

Shares 34,100 Value ($000) $11,772 Avg Close $271.66 Range $213.06 - $360.30

Q2 2025

Shares 34,100 Value ($000) $7,646 Avg Close $211.87 Range $180.60 - $237.50

Q1 2025

Shares 33,000 Value ($000) $6,823 Avg Close $201.31 Range $169.58 - $231.97

Q1 2018

Shares 3,880 Value ($000) $286 Avg Close $76.57 Range $69.33 - $81.70

Q4 2017

Shares 7,090 Value ($000) $540 Avg Close $74.74 Range $70.60 - $78.10

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	28,300	$9,010	$353.55	$314.37 - $412.60
Q3 2025	34,100	$11,772	$271.66	$213.06 - $360.30
Q2 2025	34,100	$7,646	$211.87	$180.60 - $237.50
Q1 2025	33,000	$6,823	$201.31	$169.58 - $231.97
Q1 2018	3,880	$286	$76.57	$69.33 - $81.70
Q4 2017	7,090	$540	$74.74	$70.60 - $78.10