1 unchanged sentence
Rule 10b5-1 Trading Arrangements
−Removed: During third quarter 2025, the following Section 16 officers adopted , modified or terminated “Rule 10b5-1 trading arrangements”, as such term is defined in Item 408(a) of Regulation S-K:
+Added: During first quarter 2026, the following Section 16 officers adopted , modified or terminated “Rule 10b5-1 trading arrangements”, as such term is defined in Item 408(a) of Regulation S-K:
Action Date Trading Arrangement Maximum Shares to be Sold
1 unchanged sentence
Rule 10b5-1 Non-Rule 10b5-1
−Removed: Adopt August 8, 2025 X 466 August 7, 2026
−Removed: John Markley, Jr.
−Removed: Adopt August 8, 2025 X 663 August 7, 2026
−Removed: John Kritzmacher
−Removed: Adopt August 12, 2025 X 5,362 June 30, 2026
−Removed: Adopt August 15, 2025 X 362 June 30, 2026
−Removed: Richard Brezski
−Removed: Adopt September 26, 2025 X 19,988 December 31, 2026
−Removed: Adopt September 29, 2025 X 29,758 September 29, 2026
+Added: Terminate March 11, 2026 X 1,100 November 6, 2026
+Added: Adopt March 11, 2026 X 2,400 March 31, 2027
+Added: Julia Mattis Adopt March 4, 2026 X 1,600 March 4, 2027
The following is a list of exhibits filed with this Quarterly Report on Form 10-Q:
Number Exhibit Description
+Added: 10.1 InterDigital, Inc.
Amended and Restated Executive Severance and Change in Control Policy
−Removed: 10.2 Form of Executive Mutual Agreement for Individual Arbitration (Included in Exhibit 10.1)
+Added: 10.2 2017 Equity Incentive Plan, Amendmen t to Term Sheet for Performance-Based Stock Option Awards
+Added: 10.3 2025 Equity Incentive Plan, Form of Term Sheet for Performance-Based Stock Option Awards
+Added: 10.4 2025 Equity Incentive Plan, Form of Term Sheet for Restricted Stock Units (Time-Based Award) (revised March 2026)
+Added: 10.5 2025 Equity Incentive Plan, Form of Term Sheet for Restricted Stock Units (Performance-Based Award) (revised March 2026)
31.1 Certification of Principal Executive Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act of 1934, as amended.
18 unchanged sentences
INTERDIGITAL, INC.
−Removed: October 30, 2025 /s/ LIREN CHEN
+Added: April 30, 2026 /s/ LIREN CHEN
President and Chief Executive Officer
−Removed: October 30, 2025 /s/ RICHARD J.
+Added: April 30, 2026 /s/ RICHARD J.
Chief Financial Officer
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.