InterDigital (IDCC) CLO reports RSU vesting and 6,000-share stock sale

Rhea-AI Filing Summary

InterDigital, Inc. chief legal officer and corporate secretary Joshua D. Schmidt reported a mix of equity awards, tax-related dispositions, and open-market sales of InterDigital common stock.

On March 15, 2026, 14,286.3085 shares vested from performance-based restricted stock units granted under the 2017 Equity Incentive Plan, including dividend equivalent units. To cover tax liabilities tied to these vestings, 6,604 and 2,811 shares were withheld, and small fractional shares were settled in cash and returned to the issuer.

On March 17, 2026, Schmidt executed a series of open-market sales totaling 6,000 shares at prices reported between $343.60 and $355.55 per share, carried out under a pre-arranged Rule 10b5-1 trading plan adopted on March 21, 2025. After these transactions, he held 25,889.2278 InterDigital shares directly.

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

OMB APPROVAL

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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).

X

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^*

Schmidt Joshua D.

(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)
	CLO & Corp Secretary

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)		14,286.3085	A	$0	41,307.0026	D
Common Stock	03/15/2026		F(2)		6,604	D	$362.35	34,703.0026	D
Common Stock	03/15/2026		D(3)		0.3085	D	$362.35	34,702.6941	D
Common Stock	03/15/2026		F(4)		2,811	D	$362.35	31,891.6941	D
Common Stock	03/15/2026		D(5)		2.4663	D	$362.35	31,889.2278	D
Common Stock	03/17/2026		S(6)		624(7)	D	$344.35	31,265.2278	D
Common Stock	03/17/2026		S(6)		998(8)	D	$345.1	30,267.2278	D
Common Stock	03/17/2026		S(6)		708(9)	D	$346.15	29,559.2278	D
Common Stock	03/17/2026		S(6)		842(10)	D	$348.38	28,717.2278	D
Common Stock	03/17/2026		S(6)		1,060(11)	D	$349.08	27,657.2278	D
Common Stock	03/17/2026		S(6)		798(12)	D	$350.18	26,859.2278	D
Common Stock	03/17/2026		S(6)		538(13)	D	$351.16	26,321.2278	D
Common Stock	03/17/2026		S(6)		120	D	$353	26,201.2278	D
Common Stock	03/17/2026		S(6)		312(14)	D	$355.17	25,889.2278	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 13,718 restricted stock units, vested on March 15, 2026 together with 568.3085 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. The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted on March 21, 2025.

7. The number of securities reported represents an aggregate number of shares sold in multiple open market transactions over a range of sales prices ranging from $343.60 to $344.56 per share. The price reported represents the weighted average price. The Reporting Person undertakes to provide to the staff of the SEC, the Issuer, or a stockholder of the Issuer, upon request, the number of shares sold by the Reporting Person at each separate price within the ranges set forth in this footnote and in the other footnotes in this Form 4 indicating a weighted average price.

8. The number of securities reported represents an aggregate number of shares sold in multiple open market transactions over a range of sales prices ranging from $344.64 to $345.56 per share. The price reported represents the weighted average price.

9. The number of securities reported represents an aggregate number of shares sold in multiple open market transactions over a range of sales prices ranging from $345.70 to $346.56 per share. The price reported represents the weighted average price.

10. The number of securities reported represents an aggregate number of shares sold in multiple open market transactions over a range of sales prices ranging from $347.63 to $348.61 per share. The price reported represents the weighted average price.

11. The number of securities reported represents an aggregate number of shares sold in multiple open market transactions over a range of sales prices ranging from $348.63 to $349.62 per share. The price reported represents the weighted average price.

12. The number of securities reported represents an aggregate number of shares sold in multiple open market transactions over a range of sales prices ranging from $349.77 to $350.75 per share. The price reported represents the weighted average price.

13. The number of securities reported represents an aggregate number of shares sold in multiple open market transactions over a range of sales prices ranging from $350.81 to $351.23 per share. The price reported represents the weighted average price.

14. The number of securities reported represents an aggregate number of shares sold in multiple open market transactions over a range of sales prices ranging from $355.04 to $355.55 per share. The price reported represents the weighted average price.

Remarks:

	/s/ Ariel E. Greenstein, Attorney-in-Fact for Joshua D. Schmidt	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.
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FAQ

What did InterDigital (IDCC) officer Joshua D. Schmidt report in this Form 4?

Joshua D. Schmidt reported a combination of equity award vesting, tax-related share withholding, and open-market stock sales. The filing details performance-based restricted stock units vesting and subsequent transactions in InterDigital common shares, including pre-planned sales executed under a Rule 10b5-1 trading plan.

How many InterDigital (IDCC) shares did Joshua Schmidt sell in the latest insider transactions?

Schmidt sold a total of 6,000 InterDigital common shares in multiple open-market transactions. These trades occurred on March 17, 2026, at reported weighted-average prices within ranges from $343.60 to $355.55 per share, as described across several detailed price-range footnotes.

What equity awards vested for InterDigital (IDCC) CLO Joshua Schmidt on March 15, 2026?

On March 15, 2026, 14,286.3085 InterDigital shares vested for Schmidt from performance-based restricted stock units. This included 13,718 units tied to a 2023 performance goal and 568.3085 additional shares from accrued dividend equivalent units under the company’s 2017 Equity Incentive Plan.

How were taxes handled on Joshua Schmidt’s InterDigital (IDCC) equity vesting?

To satisfy tax liabilities from his restricted stock unit vesting, Schmidt had 6,604 and 2,811 shares withheld. Additional very small fractional share amounts were settled in cash or returned to the issuer, reflecting non-market, tax and administrative dispositions rather than discretionary stock sales.

Were Joshua Schmidt’s InterDigital (IDCC) stock sales made under a Rule 10b5-1 plan?

Yes. A footnote states that the reported sales were executed pursuant to a Rule 10b5-1 trading plan. The plan was adopted on March 21, 2025, indicating the March 17, 2026 open-market sales followed a pre-arranged schedule rather than newly timed discretionary trades.

How many InterDigital (IDCC) shares does Joshua Schmidt hold after these Form 4 transactions?

Following the reported vesting, tax withholdings, issuer dispositions, and open-market sales, Schmidt directly holds 25,889.2278 InterDigital common shares. This figure reflects his remaining direct ownership as disclosed in the post-transaction share balances within the non-derivative transaction table.