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  4. [Form 4] InterDigital, Inc. Insider Trading Activity

InterDigital (IDCC) director Joan H. Gillman sells 300 shares in 10b5-1 trade

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

InterDigital, Inc. director Joan H. Gillman reported selling 300 shares of common stock on 2026-08-07 in an open-market or private transaction at $331.06 per share. The sale was made pursuant to a Rule 10b5-1 trading plan adopted on November 12, 2025. Following this transaction, Gillman directly holds 22,735.7776 shares of InterDigital common stock.

Positive

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Negative

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Insider Gillman Joan H
Role Director
Sold 300 shs ($99K)
Type Security Shares Price Value
Sale Common Stock F1 300 $331.06 $99K
Holdings After Transaction: Common Stock — 22,735.7776 shares (Direct)
Footnotes (1)
  1. F1. The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted on November 12, 2025.
Shares sold 300 shares Common Stock sale on 2026-08-07 by director Joan H. Gillman
Sale price per share $331.06 per share Price for the 300 shares of Common Stock sold
Shares held after sale 22,735.7776 shares Direct InterDigital common stock holdings following the transaction
10b5-1 plan adoption date November 12, 2025 Date the Rule 10b5-1 trading plan governing the sale was adopted
Rule 10b5-1 trading plan regulatory
"The sales reported ... were made pursuant to a Rule 10b5-1 trading plan adopted..."
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.
Common Stock financial
"security_title: Common Stock for the reported non-derivative transaction"
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.
non-derivative financial
"transaction_type is non-derivative, indicating direct trading in common shares"

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

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FAQ

What insider transaction did InterDigital (IDCC) disclose for Joan H. Gillman?
InterDigital disclosed that director Joan H. Gillman sold 300 shares of common stock on 2026-08-07 at $331.06 per share, in an open-market or private transaction under a Rule 10b5-1 trading plan.

How many InterDigital (IDCC) shares does Joan H. Gillman hold after the reported sale?
After the reported sale, Joan H. Gillman directly holds 22,735.7776 shares of InterDigital common stock. This post-transaction holding reflects her remaining direct ownership following the 300-share sale disclosed in the Form 4 filing.

At what price did Joan H. Gillman sell InterDigital (IDCC) shares?
Joan H. Gillman sold InterDigital common stock at a price of $331.06 per share. The Form 4 identifies this as the transaction price for the 300 shares sold on 2026-08-07 in an open-market or private transaction.

Was the InterDigital (IDCC) insider sale by Joan H. Gillman under a Rule 10b5-1 plan?
Yes. The filing states the sales were made pursuant to a Rule 10b5-1 trading plan adopted on November 12, 2025. Such plans pre-arrange trades, which can reduce the informational value of the sale’s timing.

What type of security did Joan H. Gillman trade in InterDigital (IDCC)?
Joan H. Gillman traded Common Stock of InterDigital, Inc. The Form 4 reports a non-derivative transaction involving the sale of 300 common shares at $331.06 per share, with updated direct ownership recorded afterward.
SEC Form 4
FORM 4UNITED 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*
Gillman Joan H
(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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/07/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/07/2026S(1)300D$331.0622,735.7776D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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 November 12, 2025.
Remarks:
/s/ Ariel E. Greenstein, Attorney-in-Fact for Joan H. Gillman08/10/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR