Jeffrey G. Winzeler

Companies

• Ambiq Micro, Inc.Chief financial officer Jul 29, 2025 to now¹
• Everspin TechnologiesChief financial officer Oct 7, 2016 to Mar 28, 2019²
• SPI Energy Co., Ltd.Chief financial officer Jan 2, 2008 to Jul 25, 2011³
• SPI Energy Co., Ltd.Pres of whollyowned subsidiary Jun 18, 2007 to Aug 18, 2008⁴

Holdings

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

Shares held

• AMAmbiq Micro, Inc. AMBQ106,299 shares⁵$5.3M at $49.59Jun 2, 2026

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

Recent filings

• Jun 2, 2026Exercised options 5,952 shares at $16.80 of Ambiq Micro, Inc.⁵
• May 15, 2026Exercised options 5,952 shares at $16.80 of Ambiq Micro, Inc.⁶
• May 14, 2026Sold 82 shares at $70.65 of Ambiq Micro, Inc.⁶
• May 14, 2026Sold 25,918 shares at $69.90 of Ambiq Micro, Inc.⁶
• May 14, 2026Exercised options 26,000 shares at $16.80 of Ambiq Micro, Inc.⁶
• Mar 6, 2026Granted 41,728 shares of Ambiq Micro, Inc.⁷
• Mar 6, 2026Granted 41,728 shares of Ambiq Micro, Inc.⁸
• Oct 2, 2025Granted 52,667 shares of Ambiq Micro, Inc.⁹