INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

Portside Wealth Group, LLC's Holding History (CIK: 0001978608)

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

Q4 2025

Shares 3,379 Value ($000) $1,076 Avg Close $353.55 Range $314.37 - $412.60

Q3 2025

Shares 3,061 Value ($000) $1,057 Avg Close $271.66 Range $213.06 - $360.30

Q2 2025

Shares 2,501 Value ($000) $561 Avg Close $211.87 Range $180.60 - $237.50

Q1 2025

Shares 1,869 Value ($000) $386 Avg Close $201.31 Range $169.58 - $231.97

Q4 2024

Shares 1,657 Value ($000) $321 Avg Close $174.85 Range $140.47 - $203.90

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,379	$1,076	$353.55	$314.37 - $412.60
Q3 2025	3,061	$1,057	$271.66	$213.06 - $360.30
Q2 2025	2,501	$561	$211.87	$180.60 - $237.50
Q1 2025	1,869	$386	$201.31	$169.58 - $231.97
Q4 2024	1,657	$321	$174.85	$140.47 - $203.90