Form 4 Filing: Insider Transaction for Winzeler Jeffrey G

This filing details a Form 4 submission by Winzeler Jeffrey G, Chief Financial Officer of Ambiq Micro, Inc. On June 2, 2026, Mr. Winzeler acquired 5,952 shares of Common Stock at a price of $16.8 per share. This transaction is marked as a purchase (Code A) under the non-derivative table. Additionally, the filing notes the exercise of a stock option for 5,952 shares of Common Stock, with a conversion or exercise price of $16.8. This is reported under the derivative table with a disposal code (D) and a transaction code (M). The footnote F1 indicates that 47,619 shares subject to the option vested on October 1, 2025, and a portion vested on June 2, 2026, with the remainder vesting monthly thereafter, contingent upon continued service. Following these transactions, Mr. Winzeler directly owns 106,299 shares of Common Stock and has options for 104,953 shares.