INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

Tortoise Investment Management, LLC's Holding History (CIK: 0001599511)

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

Q3 2025

Shares 9 Value ($000) $3 Avg Close $271.66 Range $213.06 - $360.30

Q2 2025

Shares 4 Value ($000) $1 Avg Close $211.87 Range $180.60 - $237.50

Q3 2015

Shares 33 Value ($000) $2 Avg Close $51.62 Range $44.28 - $57.77

Q2 2015

Shares 33 Value ($000) $2 Avg Close $55.81 Range $49.57 - $60.69

Q1 2015

Shares 33 Value ($000) $2 Avg Close $51.89 Range $47.76 - $56.27

Q4 2014

Shares 33 Value ($000) $2 Avg Close $48.18 Range $38.64 - $54.90

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	9	$3	$271.66	$213.06 - $360.30
Q2 2025	4	$1	$211.87	$180.60 - $237.50
Q3 2015	33	$2	$51.62	$44.28 - $57.77
Q2 2015	33	$2	$55.81	$49.57 - $60.69
Q1 2015	33	$2	$51.89	$47.76 - $56.27
Q4 2014	33	$2	$48.18	$38.64 - $54.90