Richard J. Brezski - 15 Mar 2026 Form 4 Insider Report for InterDigital, Inc. (IDCC)

Role: Chief Financial Officer
Signature: /s/ Amy A. Miraglia, Attorney-in-Fact for Richard J. Brezski
Issuer symbol: IDCC
Transactions as of: 15 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 17 Mar 2026, 17:21:47 UTC
Previous filing: 12 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
BREZSKI RICHARD	Chief Financial Officer	200 BELLEVUE PARKWAY, SUITE 300, WILMINGTON	/s/ Amy A. Miraglia, Attorney-in-Fact for Richard J. Brezski	17 Mar 2026	0001231579

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IDCC	Common Stock	Award		+21,431	+30%	$0.000000^*	91,834	15 Mar 2026	Direct	F1
transaction	IDCC	Common Stock	Tax liability		-9,319	-10%	$362.35^*	82,515	15 Mar 2026	Direct	F2
transaction	IDCC	Common Stock	Disposed to Issuer		-1	-0%	$362.35^*	82,515	15 Mar 2026	Direct	F3
transaction	IDCC	Common Stock	Tax liability		-3,965	-4.8%	$362.35^*	78,550	15 Mar 2026	Direct	F4
transaction	IDCC	Common Stock	Disposed to Issuer		-1	-0%	$362.35^*	78,549	15 Mar 2026	Direct	F5
transaction	IDCC	Common Stock	Gift		-1,000	-1.3%	$0.000000^*	77,549	16 Mar 2026	Direct	F6
holding	IDCC	Common Stock						1,951	15 Mar 2026	By 401k Plan	F7

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

Explanation of Responses:

Id	Content
F1	The transaction reported represents the vesting of awards of performance-based restricted stock units granted to the reporting person on March 31, 2023 pursuant to the company's 2017 Equity Incentive Plan in accordance with the company's long-term compensation program. Based on the achievement level of the 2023 cycle performance goal, 200% of the reporting person's target performance-based restricted stock unit awards, or 20,578 restricted stock units, vested on March 15, 2026 together with 852.5045 additional shares representing accrued dividend equivalent units.
F2	The transaction reported reflects the withholding of restricted stock units in satisfaction of the reporting person's tax liability in connection with the vesting of awards of performance-based restricted stock units described above.
F3	The transaction reported reflects the cash settlement of fractional shares in connection with the vesting of awards of performance-based restricted stock units described above.
F4	The transaction reported reflects the withholding of restricted stock units in satisfaction of the reporting person's tax liability. The restricted stock units were granted to the reporting person on March 31, 2023, March 15, 2024 and March 31, 2025 pursuant to the company's 2017 Equity Incentive Plan in accordance with the company's long-term compensation program and vested on March 15, 2026, together with accrued dividend equivalents.
F5	The transaction reported reflects the cash settlement of fractional shares in connection with the vesting of restricted stock units, as described in the previous footnote.
F6	Represents a charitable donation to a donor advised fund.
F7	As of the most recently published account statement, the reporting person beneficially owned this number of whole shares of common stock pursuant to the InterDigital Savings and Protection Plan.