| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| BREZSKI RICHARD | Chief Financial Officer | 200 BELLEVUE PARKWAY, SUITE 300, WILMINGTON | /s/ Amy A. Miraglia, Attorney-in-Fact for Richard J. Brezski | 07 Jan 2026 | 0001231579 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IDCC | Common Stock | Sale | $170,677 | -524 | -0.58% | $325.72 | 89,831 | 05 Jan 2026 | Direct | F1, F2 |
| transaction | IDCC | Common Stock | Sale | $212,478 | -650 | -0.72% | $326.89 | 89,181 | 05 Jan 2026 | Direct | F1, F3 |
| transaction | IDCC | Common Stock | Sale | $76,082 | -232 | -0.26% | $327.94 | 88,949 | 05 Jan 2026 | Direct | F1, F4 |
| transaction | IDCC | Common Stock | Sale | $113,837 | -346 | -0.39% | $329.01 | 88,603 | 05 Jan 2026 | Direct | F1, F5 |
| transaction | IDCC | Common Stock | Sale | $87,866 | -292 | -0.33% | $300.91 | 88,311 | 05 Jan 2026 | Direct | F1, F6 |
| transaction | IDCC | Common Stock | Sale | $557,499 | -1,678 | -1.9% | $332.24 | 86,633 | 05 Jan 2026 | Direct | F1, F7 |
| transaction | IDCC | Common Stock | Sale | $195,109 | -586 | -0.68% | $332.95 | 86,047 | 05 Jan 2026 | Direct | F1, F8 |
| transaction | IDCC | Common Stock | Sale | $681,816 | -2,041 | -2.4% | $334.06 | 84,006 | 05 Jan 2026 | Direct | F1, F9 |
| transaction | IDCC | Common Stock | Sale | $211,783 | -632 | -0.75% | $335.10 | 83,374 | 05 Jan 2026 | Direct | F1, F10 |
| transaction | IDCC | Common Stock | Sale | $54,576 | -176 | -0.21% | $310.09 | 83,198 | 06 Jan 2026 | Direct | F1, F11 |
| transaction | IDCC | Common Stock | Sale | $110,490 | -355 | -0.43% | $311.24 | 82,843 | 06 Jan 2026 | Direct | F1, F12 |
| transaction | IDCC | Common Stock | Sale | $66,781 | -214 | -0.26% | $312.06 | 82,629 | 06 Jan 2026 | Direct | F1, F13 |
| transaction | IDCC | Common Stock | Sale | $83,191 | -265 | -0.32% | $313.93 | 82,364 | 06 Jan 2026 | Direct | F1, F14 |
| transaction | IDCC | Common Stock | Sale | $37,770 | -120 | -0.15% | $314.75 | 82,244 | 06 Jan 2026 | Direct | F1, F15 |
| transaction | IDCC | Common Stock | Sale | $43,116 | -136 | -0.17% | $317.03 | 82,108 | 06 Jan 2026 | Direct | F1, F16 |
| transaction | IDCC | Common Stock | Sale | $17,856 | -56 | -0.07% | $318.86 | 82,052 | 06 Jan 2026 | Direct | F1, F17 |
| transaction | IDCC | Common Stock | Sale | $12,868 | -40 | -0.05% | $321.69 | 82,012 | 06 Jan 2026 | Direct | F1 |
| transaction | IDCC | Common Stock | Sale | $46,326 | -143 | -0.17% | $323.96 | 81,869 | 06 Jan 2026 | Direct | F1, F18 |
| transaction | IDCC | Common Stock | Sale | $370,346 | -1,139 | -1.4% | $325.15 | 80,730 | 06 Jan 2026 | Direct | F1, F19 |
| transaction | IDCC | Common Stock | Sale | $95,151 | -292 | -0.36% | $325.86 | 80,438 | 06 Jan 2026 | Direct | F1, F20 |
| transaction | IDCC | Common Stock | Sale | $238,420 | -728 | -0.91% | $327.50 | 79,710 | 06 Jan 2026 | Direct | F1, F21 |
| transaction | IDCC | Common Stock | Sale | $57,466 | -175 | -0.22% | $328.38 | 79,535 | 06 Jan 2026 | Direct | F1, F22 |
| transaction | IDCC | Common Stock | Sale | $59,303 | -180 | -0.23% | $329.46 | 79,355 | 06 Jan 2026 | Direct | F1 |
| transaction | IDCC | Common Stock | Sale | $26,478 | -80 | -0.1% | $330.97 | 79,275 | 06 Jan 2026 | Direct | F1, F23 |
| transaction | IDCC | Common Stock | Sale | $106,256 | -320 | -0.4% | $332.05 | 78,955 | 06 Jan 2026 | Direct | F1, F24 |
| transaction | IDCC | Common Stock | Sale | $26,614 | -80 | -0.1% | $332.67 | 78,875 | 06 Jan 2026 | Direct | F1, F25 |
| transaction | IDCC | Common Stock | Sale | $168,042 | -503 | -0.64% | $334.08 | 78,372 | 06 Jan 2026 | Direct | F1 |
| holding | IDCC | Common Stock | 1,946 | 05 Jan 2026 | By 401k Plan | F26 |
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
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).
| Id | Content |
|---|---|
| F1 | The transactions reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted on September 26, 2025. |
| F2 | 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 $325.42 to $326.27 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 footnotes 3 through 25. |
| F3 | 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 $326.44 to $327.40 per share. The price reported represents the weighted average price. |
| F4 | 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 $327.50 to $328.20 per share. The price reported represents the weighted average price. |
| F5 | 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 $329.00 to $329.02 per share. The price reported represents the weighted average price. |
| F6 | 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 $330.50 to $331.44 per share. The price reported represents the weighted average price. |
| F7 | 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 $331.54 to $332.52 per share. The price reported represents the weighted average price. |
| F8 | 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 $332.56 to $333.56 per share. The price reported represents the weighted average price. |
| F9 | 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 $333.66 to $334.59 per share. The price reported represents the weighted average price. |
| F10 | 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 $334.75 to $335.34 per share. The price reported represents the weighted average price. |
| F11 | 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 $309.76 to $310.60 per share. The price reported represents the weighted average price. |
| F12 | 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 $310.82 to $311.54 per share. The price reported represents the weighted average price. |
| F13 | 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 $311.85 to $312.17 per share. The price reported represents the weighted average price. |
| F14 | 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 $313.50 to $314.38 per share. The price reported represents the weighted average price. |
| F15 | 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 $314.73 to $314.80 per share. The price reported represents the weighted average price. |
| F16 | 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 $316.94 to $317.12 per share. The price reported represents the weighted average price. |
| F17 | 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 $318.41 to $319.32 per share. The price reported represents the weighted average price. |
| F18 | 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 $323.26 to $324.24 per share. The price reported represents the weighted average price. |
| F19 | 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 $324.49 to $325.53 per share. The price reported represents the weighted average price. |
| F20 | 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 $325.61 to $326.32 per share. The price reported represents the weighted average price. |
| F21 | 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 $327.23 to $327.75 per share. The price reported represents the weighted average price. |
| F22 | 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 $328.29 to $328.78 per share. The price reported represents the weighted average price. |
| F23 | 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 $330.65 to $331.29 per share. The price reported represents the weighted average price. |
| F24 | 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 $331.65 to $332.57 per share. The price reported represents the weighted average price. |
| F25 | 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 $332.76 to $332.79 per share. The price reported represents the weighted average price. |
| F26 | As of the most recently published account statement, the reporting person beneficially owned this number of whole shares of common stock pursuant to the InterDigital Savings and Protection Plan. |