InterDigital (IDCC) CFO details RSU vesting, tax withholdings and 1,000-share gift

Rhea-AI Filing Summary

InterDigital, Inc.’s Chief Financial Officer Richard Brezski reported compensation-related stock activity and a charitable gift. On March 15, 2026, performance-based restricted stock units granted under the 2017 Equity Incentive Plan vested at 200% of his 2023-cycle target, totaling 20,578 units plus 852.5045 dividend-equivalent shares. The company withheld 13,284 shares, and small fractional amounts, at a price of $362.35 per share to cover tax liabilities and settle fractions, which are non-market dispositions. On March 16, 2026, he made a bona fide gift of 1,000 common shares to a donor advised fund. After these transactions, Brezski directly held 78,549.0638 common shares and indirectly held 1,951 shares through the InterDigital Savings and Protection Plan.

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^*

BREZSKI RICHARD

(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 Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/15/2026

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	03/15/2026		A(1)		21,430.5045	A	$0	91,834.0982	D
Common Stock	03/15/2026		F(2)		9,319	D	$362.35	82,515.0982	D
Common Stock	03/15/2026		D(3)		0.5045	D	$362.35	82,514.5937	D
Common Stock	03/15/2026		F(4)		3,965	D	$362.35	78,549.5937	D
Common Stock	03/15/2026		D(5)		0.5299	D	$362.35	78,549.0638	D
Common Stock	03/16/2026		G(6)		1,000	D	$0	77,549.0638	D
Common Stock								1,951(7)	I	By 401k Plan

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. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. Represents a charitable donation to a donor advised fund.

7. 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.

Remarks:

	/s/ Amy A. Miraglia, Attorney-in-Fact for Richard J. Brezski	03/17/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did InterDigital (IDCC) CFO Richard Brezski report?

Richard Brezski reported vesting of performance-based restricted stock units, tax-related share withholdings, small fractional-share settlements, and a bona fide gift of 1,000 common shares to a donor advised fund, all tied to the company’s long-term equity compensation program.

How many InterDigital (IDCC) shares vested for the CFO in this Form 4?

A total of 20,578 performance-based restricted stock units vested for Richard Brezski, along with 852.5045 additional shares representing accrued dividend-equivalent units, reflecting 200% achievement of his 2023 performance-cycle target under InterDigital’s 2017 Equity Incentive Plan.

Were any of the InterDigital (IDCC) CFO’s transactions open-market sales or purchases?

No open-market sales or purchases were reported. The Form 4 shows equity awards vesting, tax-withholding dispositions coded F, fractional-share cash settlements coded D, and a gift coded G, which are administrative or charitable rather than discretionary market trades.

What charitable transaction involving InterDigital (IDCC) stock did the CFO make?

Richard Brezski made a bona fide gift of 1,000 shares of InterDigital common stock, reported as a G-code transaction. A footnote clarifies this represents a charitable donation to a donor advised fund, with no sale proceeds to the executive.

How many InterDigital (IDCC) shares does the CFO hold after these transactions?

Following the reported transactions, Richard Brezski directly held 78,549.0638 InterDigital common shares. A separate indirect holding entry shows ownership of 1,951 whole shares through the InterDigital Savings and Protection Plan, based on the most recent account statement.

What do the tax-withholding transactions on InterDigital (IDCC) shares represent?

The F-coded transactions reflect shares withheld to satisfy tax liabilities related to vesting of performance-based and time-based restricted stock units. Instead of paying cash taxes, a portion of vested shares is withheld at a stated price per share to cover the obligation.