InterDigital (IDCC) CTO updates holdings after large RSU vesting and tax withholding

Rhea-AI Filing Summary

InterDigital, Inc. Chief Technology Officer Pankaj Rajesh reported the vesting of performance-based restricted stock units on March 15, 2026. He acquired 21,430.5045 shares of common stock as awards that vested based on the achievement level of a 2023 performance goal, including additional shares from accrued dividend equivalents.

To cover tax obligations related to these vestings, a total of 13,470 restricted stock units were withheld and disposed of, and small fractional share amounts were settled in cash through dispositions to the issuer. After these transactions, Rajesh directly holds 68,154.4914 shares of InterDigital common stock.

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^*

Pankaj Rajesh

(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 Technology 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	81,626.5747	D
Common Stock	03/15/2026		F(2)		9,319	D	$362.35	72,307.5747	D
Common Stock	03/15/2026		D(3)		0.5045	D	$362.35	72,307.0702	D
Common Stock	03/15/2026		F(4)		4,151	D	$362.35	68,156.0702	D
Common Stock	03/15/2026		D(5)		1.5788	D	$362.35	68,154.4914	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. 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. he transaction reported reflects the cash settlement of fractional shares in connection with the vesting of restricted stock units, as described in the previous footnote.

Remarks:

	/s/ Ariel E. Greenstein, Attorney-in-Fact for Rajesh Pankaj	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did InterDigital (IDCC) report for its CTO?

InterDigital’s CTO, Pankaj Rajesh, reported vesting of performance-based restricted stock units on March 15, 2026. He received common shares as part of long-term equity awards granted under the company’s 2017 Equity Incentive Plan tied to achievement of a 2023 performance cycle.

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

A total of 21,430.5045 InterDigital common shares vested for CTO Pankaj Rajesh. This includes 20,578 performance-based restricted stock units and 852.5045 additional shares from accrued dividend equivalent units, all vesting on March 15, 2026 under the company’s long-term compensation program.

Were any of the InterDigital (IDCC) shares sold on the open market?

The filing shows no open-market sales. Instead, 13,470 restricted stock units were withheld to satisfy tax liabilities and small fractional share amounts were disposed of to the issuer for cash settlement, all in connection with the vesting of equity awards.

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

After the reported vesting and related tax and fractional-share dispositions, CTO Pankaj Rajesh directly holds 68,154.4914 shares of InterDigital common stock. This figure reflects his updated ownership following the March 15, 2026 equity award events detailed in the Form 4.

What triggered the tax-withholding transactions in InterDigital (IDCC) CTO’s Form 4?

The tax-withholding transactions were triggered by the vesting of performance-based and time-based restricted stock units granted under InterDigital’s 2017 Equity Incentive Plan. Shares were withheld to satisfy the CTO’s tax liability associated with these vestings, as described in the transaction footnotes.

What do the fractional share dispositions mean in the InterDigital (IDCC) Form 4?

The fractional share dispositions represent small fractions of shares settled in cash when awards vested. The Form 4 explains that these dispositions to the issuer relate to fractional shares arising from vesting of performance-based and other restricted stock units, including associated dividend equivalents.