Michael L. Pfeiffer

Companies

• Alpha & Omega SemiconductorBoard member Jan 31, 2014 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

• AOAlpha & Omega Semiconductor AOSL71,294 shares²$1.6M at $22.30Nov 11, 2025

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

Recent filings

• Nov 11, 2025Granted 5,681 shares of Alpha & Omega Semiconductor²
• Nov 7, 2024Granted 4,456 shares of Alpha & Omega Semiconductor³
• Jan 19, 2024Sold 2,673 shares at $27.34 of Alpha & Omega Semiconductor⁴
• Jan 19, 2024Exercised options 4,500 shares at $7.21 of Alpha & Omega Semiconductor⁴
• Jan 18, 2024Sold 664 shares at $26.68 of Alpha & Omega Semiconductor⁴
• Jan 18, 2024Exercised options 2,375 shares at $7.21 of Alpha & Omega Semiconductor⁴
• Nov 9, 2023Granted 5,593 shares of Alpha & Omega Semiconductor⁵
• Nov 29, 2022Granted 4,061 shares of Alpha & Omega Semiconductor⁶
• Nov 11, 2021Granted 4,009 shares of Alpha & Omega Semiconductor⁷