Ronald C. Foster

Companies

• Advanced EnergyBoard member Nov 7, 2014 to now¹
• Everspin TechnologiesBoard member Oct 7, 2016 to May 20, 2020²
• Micron TechnologyChief financial officer Apr 3, 2008 to Feb 19, 2015³
• FORMFACTOR INCChief financial officer May 15, 2006 to Jun 18, 2007⁴

Holdings

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

Shares held

• Advanced Energy AEIS25,088 shares⁵$6.1M at $241.26May 5, 2026

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

Recent filings

• May 2, 2026Exercised options 2,313 shares of Advanced Energy⁵
• May 3, 2025Exercised options 2,093 shares of Advanced Energy⁶
• May 5, 2024Exercised options 2,257 shares of Advanced Energy⁷
• Dec 13, 2023Sold 618 shares at $105.00 of Advanced Energy⁸
• Dec 1, 2023Sold 1,000 shares at $95.00 of Advanced Energy⁹
• Nov 15, 2023Sold 1,000 shares at $95.00 of Advanced Energy¹⁰
• Oct 2, 2023Sold 1,000 shares at $103.26 of Advanced Energy¹¹
• Sep 1, 2023Sold 1,000 shares at $118.48 of Advanced Energy¹²
• Sep 1, 2023Sold 1,000 shares at $118.48 of Advanced Energy¹²
• Aug 1, 2023Sold 1,000 shares at $123.46 of Advanced Energy¹³
• Aug 1, 2023Sold 1,000 shares at $123.46 of Advanced Energy¹³
• Jul 3, 2023Sold 1,000 shares at $110.91 of Advanced Energy¹⁴
• Jul 3, 2023Sold 1,000 shares at $110.92 of Advanced Energy¹⁴
• Jun 7, 2023Sold 1,000 shares at $105.00 of Advanced Energy¹⁵
• Jun 1, 2023Sold 1,000 shares at $97.98 of Advanced Energy¹⁶
• May 25, 2023Sold 1,000 shares at $95.00 of Advanced Energy¹⁷
• May 9, 2022Granted 2,655 shares of Advanced Energy¹⁸