X0609 4 2026-05-15 0001500412 Ambiq Micro, Inc. AMBQ 0002078559 Chen Sean Chihhsiang false C/O AMBIQ MICRO, INC. 6500 RIVER PLACE BLVD BUILDING 7 STE 200 AUSTIN TX 78730 false true false false President and COO 0 Common Stock 2026-05-15 4 M 0 55685 5.88 A 175960 D Common Stock 2026-05-15 4 S 0 32351 70.5334 D 143609 D Common Stock 2026-05-15 4 S 0 23334 71.3746 D 120275 D Stock Option (Right to Buy) 5.88 2026-05-15 4 M 0 55685 0 D 2026-11-02 Common Stock 55685 1 D The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $70.02 to $71.0097 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $71.025 to $71.85 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. 1/4 of the shares subject to the option vested on November 3, 2017, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service. /s/ Jeffrey Winzeler, Attorney-in-Fact 2026-05-18