INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

Clearstead Advisors, LLC's Holding History (CIK: 0000842775)

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

Q4 2025

Shares 198 Value ($000) $63 Avg Close $353.55 Range $314.37 - $412.60

Q3 2025

Shares 130 Value ($000) $45 Avg Close $271.66 Range $213.06 - $360.30

Q2 2025

Shares 168 Value ($000) $38 Avg Close $211.87 Range $180.60 - $237.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	198	$63	$353.55	$314.37 - $412.60
Q3 2025	130	$45	$271.66	$213.06 - $360.30
Q2 2025	168	$38	$211.87	$180.60 - $237.50