InterDigital officer receives dividend-equivalent RSUs

InterDigital, Inc. Chief Licensing Officer Julia C. Mattis reported an acquisition of 23.8111 shares of common stock on July 22, 2026.

Rhea-AI Filing Summary

InterDigital, Inc. Chief Licensing Officer Julia C. Mattis reported an acquisition of 23.8111 shares of common stock on July 22, 2026. These restricted stock units were credited as dividend equivalents on previously granted unvested RSUs. Following this award, her direct holdings total 11,562.1202 shares.

Insider Trade Summary

Grant/Award: 23.8111 shares

Grant/Award 1 txn

Insider Mattis Julia C

Role Chief Licensing Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	23.8111	$0.00	$0.00

Holdings After Transaction: Common Stock — 11,562.1202 shares (Direct)

Footnotes (1)

1. F1. Restricted stock units received pursuant to dividend equivalents credited on unvested restricted stock units previously granted to the reporting person. Dividend equivalents accrue with respect to unvested restricted stock units when and as cash dividends are paid on InterDigital, Inc.'s common stock.

Key Figures

Shares acquired: 23.8111 shares Price per share: $0.0000 Shares owned after: 11,562.1202 shares +1 more

4 metrics

Shares acquired 23.8111 shares Restricted stock units credited as dividend equivalents on 2026-07-22

Price per share $0.0000 Reported transaction price for the RSU dividend-equivalent credits

Shares owned after 11,562.1202 shares Direct common stock holdings following the reported acquisition

Transaction date 2026-07-22 Date the dividend-equivalent RSUs were credited

Key Terms

Restricted stock units, dividend equivalents, unvested restricted stock units

3 terms

Restricted stock units financial

"Restricted stock units received pursuant to dividend equivalents credited"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

dividend equivalents financial

"dividend equivalents credited on unvested restricted stock units"

Payments tied to employee or contractor equity awards that mirror the cash dividends paid on the company’s stock; they give the holder the same economic benefit as owning the shares without transferring actual shares—often paid in cash or additional award units when the award becomes payable. Investors care because these payments affect a company’s compensation costs, cash flow and potential share dilution, and they signal how management is being rewarded and aligned with shareholders.

unvested restricted stock units financial

"dividend equivalents credited on unvested restricted stock units previously granted"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

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

Julia C. Mattis reported acquiring 23.8111 shares of InterDigital common stock. The shares are in the form of restricted stock units credited as dividend equivalents on previously granted unvested RSUs, increasing her direct holdings to 11,562.1202 shares.

How were the new InterDigital (IDCC) shares granted to Julia C. Mattis?

The additional shares were received as restricted stock units credited through dividend equivalents. Dividend equivalents accrue on unvested RSUs when InterDigital, Inc. pays cash dividends on its common stock, effectively reinvesting those dividends as RSU credits.

Was Julia C. Mattis’s IDCC Form 4 transaction an open-market purchase or sale?

The transaction was not an open-market purchase or sale. It is coded as an acquisition via grant or award, representing dividend-equivalent restricted stock units credited on existing unvested RSUs, with no per-share purchase price reported.

What is Julia C. Mattis’s direct InterDigital (IDCC) holding after this Form 4?

After the reported award, Julia C. Mattis directly holds 11,562.1202 shares of InterDigital common stock. This figure includes the 23.8111 restricted stock units credited as dividend equivalents on July 22, 2026, according to the filing’s ownership table.

Was Julia C. Mattis’s IDCC transaction under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox is not marked as an affirming plan. The accompanying footnote describes the acquisition as dividend-equivalent RSUs on unvested awards, with no reference to any Rule 10b5-1 trading arrangement.

What price per share is associated with Julia C. Mattis’s new IDCC RSUs?

The reported price per share for the acquired restricted stock units is $0.0000. This reflects that the award was granted as dividend-equivalent RSUs rather than purchased in the market, so no cash consideration per share was paid by the insider.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/24/2026 - 06:32 AM EDT Learn about SEC filing dates

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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 DELAWARE 19809

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/22/2026

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

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

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

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	07/22/2026		A(1)		23.8111	A	$0	11,562.1202	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 received pursuant to dividend equivalents credited on unvested restricted stock units previously granted to the reporting person. Dividend equivalents accrue with respect to unvested restricted stock units when and as cash dividends are paid on InterDigital, Inc.'s common stock.

Remarks:

	/s/ Ariel E. Greenstein, Attorney-in-Fact for Julia C. Mattis	07/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)