Thomas Caulfield

Companies

• USA Rare EarthBoard member Mar 19, 2026 to now¹
• GlobalFoundriesBoard member Mar 17, 2026 to now²
• SandiskBoard member Jan 31, 2025 to now³
• Western DigitalBoard member Jul 8, 2021 to Nov 22, 2024⁴
• PDF SolutionsBoard member Sep 19, 2006 to Sep 11, 2013⁵

Holdings

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

Shares held

• GGlobalFoundries GFS188,256 shares⁶$9.2M at $48.76May 1, 2026
• Western Digital WDC21,737 shares⁷$7.2M at $332.54Nov 20, 2024
• URUSA Rare Earth USAR55,726 shares⁸$612.4K at $10.99Jul 7, 2026

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

Recent filings

• Jul 7, 2026Granted 271 shares of USA Rare Earth⁸
• Jun 3, 2026Exercised options 2,548 shares of USA Rare Earth⁹
• Jun 3, 2026Granted 407 shares of USA Rare Earth⁹
• May 12, 2026Gift 9,666 shares of CIK 2023554¹⁰
• May 1, 2026Granted 146,199 shares of GlobalFoundries⁶
• Mar 3, 2026Gift 14,500 shares of CIK 2023554¹¹
• Mar 3, 2026Gift 14,500 shares of CIK 2023554¹¹
• Nov 18, 2025Granted 979 shares of CIK 2023554¹²
• Mar 3, 2025Granted 4,148 shares of CIK 2023554¹³
• Feb 28, 2025Granted 5,693 shares of CIK 2023554¹³
• Nov 20, 2024Granted 3,759 shares of Western Digital⁷
• Nov 15, 2023Granted 5,213 shares of Western Digital¹⁴
• Nov 16, 2022Granted 6,589 shares of Western Digital¹⁵
• Nov 16, 2021Granted 4,103 shares of Western Digital¹⁶