Julia C. Mattis - Sep 17, 2025 Form 3 Insider Report for InterDigital, Inc. (IDCC)

Role: Chief Licensing Officer
Signature: /s/ Ariel E. Greenstein, Attorney-in-Fact for Julia C. Mattis
Stock symbol: IDCC
Transactions as of: Sep 17, 2025
Transactions value $: $0
Form type: 3
Date filed: 9/19/2025, 04:10 PM
Next filing: Oct 24, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mattis Julia C	Chief Licensing Officer	200 BELLEVUE PARKWAY, SUITE 300, WILMINGTON	/s/ Ariel E. Greenstein, Attorney-in-Fact for Julia C. Mattis	2025-09-19	0002086712

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	IDCC	Common Stock						7.46K	Sep 17, 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Consists of restricted stock units granted pursuant to the company's 2017 and 2025 Equity Incentive Plans and restricted stock units received pursuant to dividend equivalents credited on unvested restricted stock units held by the reporting person. Dividend equivalents accrue with respect to unvested restricted stock units when and as cash dividends are paid on the company's common stock.