InterDigital, Inc. (IDCC) Chief Licensing Officer receives 1,068-share award

Rhea-AI Filing Summary

InterDigital, Inc.’s Chief Licensing Officer, Julia C. Mattis, reported an equity award of company stock. On 12/15/2025, she acquired 1,068 shares of Common Stock at a stated price of $0, reflecting shares delivered in connection with restricted stock units. After this grant, she beneficially owns 8,541.079 Common Stock shares, held directly.

The footnote explains that the award consists of restricted stock units granted under the company’s 2025 Equity Incentive Plan as part of InterDigital’s long-term compensation program.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Mattis Julia C

(Last) (First) (Middle)

200 BELLEVUE PARKWAY

SUITE 300

(Street)

WILMINGTON DE 19809

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
InterDigital, Inc. [ IDCC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Licensing Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/15/2025		A(1)		1,068	A	$0	8,541.079	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Restricted stock units granted pursuant to the company's 2025 Equity Incentive Plan in accordance with the company's long-term compensation program.

Remarks:

	/s/ Ariel E. Greenstein, Attorney-in-Fact for Julia C. Mattis	01/07/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transaction did InterDigital (IDCC) report for Julia C. Mattis?

InterDigital reported that Chief Licensing Officer Julia C. Mattis acquired 1,068 shares of Common Stock on 12/15/2025 in an equity award.

How many InterDigital shares does Julia C. Mattis own after this Form 4 transaction?

Following the reported transaction, Julia C. Mattis beneficially owns 8,541.079 shares of InterDigital Common Stock, held directly.

What was the price per share for the InterDigital stock reported in this Form 4?

The 1,068 shares of InterDigital Common Stock were reported at a price of $0 per share, consistent with a stock grant rather than a market purchase.

What type of award did Julia C. Mattis receive from InterDigital (IDCC)?

The filing states that the award consists of restricted stock units granted under InterDigital’s 2025 Equity Incentive Plan.

Why were these InterDigital shares granted to Julia C. Mattis?

The footnote explains that the restricted stock units were granted in accordance with the company’s long-term compensation program under the 2025 Equity Incentive Plan.

Is Julia C. Mattis a director or officer of InterDigital, Inc.?

According to the filing, Julia C. Mattis is an officer of InterDigital, serving as the company’s Chief Licensing Officer, and is not listed as a director or 10% owner.