Insider Trading May 18, 2026 06:16 PM

Insider Activity and Recent Earnings Report for Ambiq Micro Inc.

CFO Jeffrey Winzeler sells shares following option exercises amidst strong quarterly financial performance.

By Nina Shah AMBQ

Ambiq Micro's CFO, Jeffrey Winzeler, recently executed transactions involving the sale of common stock after exercising options. This activity occurred while the company's stock is trading near recent highs. Separately, Ambiq Micro reported Q1 2026 earnings that surpassed analyst expectations, showing a significant year-over-year increase in revenue and an improvement in earnings per share.

Insider Activity and Recent Earnings Report for Ambiq Micro Inc.
AMBQ

Key Points

  • CFO Jeffrey Winzeler sold shares following the exercise of options, valued at approximately $1.82 million.
  • Ambiq Micro reported a Q1 2026 EPS of -$0.25 and revenue of $25.06 million, representing significant year-over-year growth.
  • The stock is currently trading near its 52-week high, amid strong recent performance.

Jeffrey G. Winzeler, Chief Financial Officer of Ambiq Micro, Inc. (NASDAQ:AMBQ), recently executed stock transactions that involved the disposition of common shares. According to filings with the Securities and Exchange Commission, Mr. Winzeler sold common stock valued at approximately $1.82 million.

These sales took place over two days, specifically May 14, 2026, and May 15, 2026. The transactions involved first exercising existing stock options, followed by the subsequent sale of the resulting shares. It is noted that the company's common stock is currently trading at $71.34, approaching its 52-week high of $73.72.

Details of Stock Sales and Acquisitions

On May 14, Mr. Winzeler disposed of a total quantity of 26,000 shares of Ambiq Micro common stock. These sales were conducted through multiple transactions, with the sale prices varying between $69.61 and $70.65 per share. Quantitatively, 25,918 shares were sold at a weighted average price of $69.8981, while an additional 82 shares were sold at $70.65 per share. The combined value realized from these sales on that date was approximately $1,817,412.

Following the initial sales activities, Mr. Winzeler also acquired new holdings through option exercises. On May 14, he purchased 26,000 shares of common stock at an exercise price of $16.8 per share. The following day, May 15, he increased his position by acquiring an additional 5,952 shares, also utilizing the $16.8 per share exercise rate. In total, these option exercises generated a value approximating $536,793.

These stock options are identified as

Risks

  • Market valuation concerns: InvestingPro analysis suggests that AMBQ may be overvalued relative to its Fair Value estimate, placing it on the Most Overvalued list.
  • Insider selling activity: The CFO's sale of shares, even after exercising options, represents a significant divestiture of holdings.
  • Reliance on future performance: While Q1 2026 results were strong, sustained market confidence depends on continued execution and meeting high growth expectations.

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