InterDigital (IDCC) licensing chief sells 1,600 shares under Rule 10b5-1 plan

Rhea-AI Filing Summary

InterDigital, Inc. Chief Licensing Officer Julia C. Mattis reported an open-market sale of 1,600 shares of common stock at an average price of $257.65 per share on June 3, 2026. Following this transaction, she directly holds 11,538.3091 shares. The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on March 4, 2026, indicating it was scheduled in advance rather than timed discretionarily.

Insights

Equity compensation and insider-trading analyst

Routine pre-planned insider sale with modest size relative to remaining holdings.

Chief Licensing Officer Julia C. Mattis conducted an open-market sale of 1,600 shares of InterDigital, Inc. common stock at $257.65 per share. After the transaction, she still directly owns 11,538.3091 shares, so the filing reflects a partial reduction rather than an exit.

The footnote states the sale was made pursuant to a Rule 10b5-1 trading plan adopted on March 4, 2026. Such plans pre-schedule trades, which generally reduces the informational value of the exact timing because sales occur automatically under preset conditions.

From an investor perspective, this is a single, pre-planned net sale with no associated derivative exercises or tax-withholding events disclosed in this filing. Subsequent filings may provide additional context if further scheduled transactions under the same plan occur.

Insider Trade Summary 10b5-1

Net Seller: 1,600 shares ($412,240)

Net Sell 1 txn

Insider Mattis Julia C

Role Chief Licensing Officer

Sold 1,600 shs ($412K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,600	$257.65	$412K

Holdings After Transaction: Common Stock — 11,538.309 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 1,600 shares Sale price per share: $257.65 per share Shares held after sale: 11,538.3091 shares +2 more

5 metrics

Shares sold 1,600 shares Open-market sale of common stock on June 3, 2026

Sale price per share $257.65 per share Average price for the 1,600 shares sold

Shares held after sale 11,538.3091 shares Direct holdings following the June 3, 2026 transaction

Transaction code S (sale) Non-derivative open-market sale of common stock

10b5-1 plan adoption date March 4, 2026 Rule 10b5-1 trading plan governing the sale

Key Terms

Rule 10b5-1 trading plan, open-market sale, Form 4, Common Stock

4 terms

Rule 10b5-1 trading plan regulatory

"The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 regulatory

"The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Common Stock financial

""security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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Form 4 Insider Transactions: What Each Field Means →

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).

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^*

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)
06/03/2026

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	06/03/2026		S(1)		1,600	D	$257.65	11,538.3091	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 sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted on March 4, 2026.

Remarks:

	/s/ Ariel E. Greenstein, Attorney-in-Fact for Julia C. Mattis	06/04/2026
	** 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)

FAQ

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

InterDigital reported that Chief Licensing Officer Julia C. Mattis sold 1,600 shares of common stock in an open-market transaction at an average price of $257.65 per share. This Form 4 filing reflects a single net sale with no corresponding option exercises disclosed.

How many InterDigital (IDCC) shares does Julia C. Mattis hold after this Form 4 sale?

After selling 1,600 shares, Julia C. Mattis directly holds 11,538.3091 InterDigital common shares. This indicates she retained a substantial equity position following the reported transaction, which was a partial reduction rather than a full liquidation of her holdings.

Was the InterDigital (IDCC) insider sale by Julia C. Mattis under a Rule 10b5-1 plan?

Yes. The filing notes the sale was made under a Rule 10b5-1 trading plan adopted on March 4, 2026. These plans pre-arrange trades, meaning the timing of this June 3, 2026 sale was scheduled in advance rather than chosen opportunistically.

What type of transaction is reported in Julia C. Mattis’s InterDigital (IDCC) Form 4?

The Form 4 reports an open-market sale of InterDigital common stock, coded as “S” for sale. It involves 1,600 non-derivative shares at $257.65 per share and shows no derivative exercises, gifts, or tax-withholding dispositions in this specific filing.

Does the InterDigital (IDCC) Form 4 show any option exercises or derivative trades for Julia C. Mattis?

No. The disclosed transaction involves only non-derivative common stock with a single sale of 1,600 shares. The derivative summary section is empty, indicating no option exercises, conversions, or other derivative transactions were reported in this particular Form 4 filing.