INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

WHITTIER TRUST CO's Holding History (CIK: 0001137881)

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

Q1 2018

Shares 88 Value ($000) $6 Avg Close $76.57 Range $69.33 - $81.70

Q4 2017

Shares 88 Value ($000) $7 Avg Close $74.74 Range $70.60 - $78.10

Q3 2017

Shares 88 Value ($000) $6 Avg Close $73.19 Range $67.55 - $81.85

Q2 2017

Shares 88 Value ($000) $7 Avg Close $83.80 Range $77.20 - $93.00

Q1 2017

Shares 88 Value ($000) $8 Avg Close $89.86 Range $83.15 - $102.30

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	88	$6	$76.57	$69.33 - $81.70
Q4 2017	88	$7	$74.74	$70.60 - $78.10
Q3 2017	88	$6	$73.19	$67.55 - $81.85
Q2 2017	88	$7	$83.80	$77.20 - $93.00
Q1 2017	88	$8	$89.86	$83.15 - $102.30