Julia C. Mattis

Companies

• InterDigitalChief Licensing Officer Sep 19, 2025 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• IInterDigital IDCC11,236 shares²$3.7M at $328.06Sep 15, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Sep 15, 2026Returned to company 1 shares at $340.38 of InterDigital²
• Sep 15, 2026Shares withheld for tax 325 shares at $340.38 of InterDigital²
• Jul 22, 2026Granted 24 shares of InterDigital³
• Jun 3, 2026Sold 1,600 shares at $257.65 of InterDigital⁴
• Apr 22, 2026Granted 16 shares of InterDigital⁵
• Mar 31, 2026Granted 4,140 shares of InterDigital⁶
• Mar 15, 2026Returned to company 2 shares at $362.35 of InterDigital⁷
• Mar 15, 2026Shares withheld for tax 993 shares at $362.35 of InterDigital⁷
• Mar 15, 2026Returned to company 0 shares at $362.35 of InterDigital⁷
• Mar 15, 2026Shares withheld for tax 1,050 shares at $362.35 of InterDigital⁷
• Mar 15, 2026Granted 2,470 shares of InterDigital⁷
• Jan 28, 2026Granted 16 shares of InterDigital⁸
• Dec 15, 2025Granted 1,068 shares of InterDigital⁹
• Oct 22, 2025Granted 12 shares of InterDigital¹⁰