Ambiq Micro president & COO sells $772k in stock

Sean Chihhsiang Chen, President and COO of Ambiq Micro, sold 15,000 shares of the company's stock on October 14, 2026. The sales occurred at prices ranging from $50.00 to $54.27 per share. The sale was made under a pre-planned Rule 10b5-1 trading plan adopted by Mr. Chen on June 5, 2026. The timing of the sale came as the stock was trading at $49.88, down 15% from the previous week.

Analysts believe Ambiq Micro is overvalued given its current price, and the company remains one of the most overvalued stocks in the market. Despite the recent volatility, Ambiq Micro has delivered strong returns over the past year, with shares up 64% annually. Chen executed the sales in multiple transactions throughout the day, selling 7,539 shares at a weighted average price of $50.129, 1,261 shares at $51.5306, 2,000 shares at $52.4682, and 4,000 shares at $53.4363.

He also purchased 15,000 shares by exercising stock options at $8.12 per share, bringing his direct ownership of Ambiq Micro common stock to 106,268 shares.