Geoffrey G. Ribar

Companies

• QuantumScapeBoard member Jan 30, 2026 to now¹
• Acacia ResearchBoard member May 23, 2023 to now²
• Everspin TechnologiesBoard member Dec 6, 2018 to now³
• M/A-COM Technology SolutionsBoard member Mar 27, 2017 to now⁴
• Aquantia CorporationBoard member Nov 2, 2017 to Jun 21, 2019⁵
• Cadence Design SystemsChief financial officer Nov 4, 2010 to Aug 30, 2017⁶

Holdings

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

Shares held

• M/A-COM Technology Solutions MTSI12,563 shares⁷$3.4M at $267.32May 11, 2026
• ETEverspin Technologies MRAM97,915 shares⁸$1.3M at $13.30May 21, 2026
• Acacia Research ACTG85,827 shares⁹$358.8K at $4.18May 30, 2025
• QuantumScape QS60,285 shares¹⁰$235.7K at $3.91Jun 3, 2026

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

Recent filings

• Jun 3, 2026Granted 24,183 shares of QuantumScape¹⁰
• May 21, 2026Granted 3,852 shares of Everspin Technologies⁸
• May 20, 2026Sold 27,488 shares at $28.87 of Everspin Technologies¹¹
• May 11, 2026Sold 1,623 shares at $361.84 of M/A-COM Technology Solutions⁷
• Mar 6, 2026Granted 776 shares of M/A-COM Technology Solutions¹²
• Feb 25, 2026Sold 2,244 shares at $253.59 of M/A-COM Technology Solutions¹³
• Jan 29, 2026Granted 6,224 shares of QuantumScape¹⁴
• Jan 29, 2026Granted 29,878 shares of QuantumScape¹⁴
• May 30, 2025Granted 32,172 shares of Acacia Research⁹
• May 22, 2025Granted 20,325 shares of Everspin Technologies¹⁵
• Mar 7, 2025Granted 1,623 shares of M/A-COM Technology Solutions¹⁶
• Feb 12, 2025Sold 6,656 shares at $121.61 of M/A-COM Technology Solutions¹⁷
• Jun 7, 2024Granted 23,121 shares of Acacia Research¹⁸
• May 23, 2024Granted 20,973 shares of Everspin Technologies¹⁹
• May 7, 2024Sold 3,500 shares at $103.84 of M/A-COM Technology Solutions²⁰
• Mar 13, 2024Sold 7,856 shares at $8.50 of Everspin Technologies²¹
• Mar 8, 2024Granted 2,138 shares of M/A-COM Technology Solutions²²
• Mar 6, 2024Sold 6,000 shares at $8.50 of Everspin Technologies²³
• Aug 28, 2023Sold 3,861 shares at $81.05 of M/A-COM Technology Solutions²⁴
• Aug 14, 2023Sold 42,000 shares at $9.82 of Everspin Technologies²⁵
• Aug 14, 2023Exercised options 30,000 shares at $6.89 of Everspin Technologies²⁵
• Aug 14, 2023Exercised options 12,000 shares at $7.20 of Everspin Technologies²⁵
• May 26, 2023Granted 30,534 shares of Acacia Research²⁶
• May 23, 2023Granted 16,578 shares of Everspin Technologies²⁷
• Mar 3, 2023Granted 2,244 shares of M/A-COM Technology Solutions²⁸