X0609 4 2026-05-14 0001500412 Ambiq Micro, Inc. AMBQ 0002078454 Esaka Fumihide false C/O AMBIQ MICRO, INC. 6500 RIVER PLACE BLVD BUILDING 7 STE 200 AUSTIN TX 78730 true true false false Chief Executive Officer 0 Common Stock 2026-05-14 4 M 0 60000 8.12 A 451189 D Common Stock 2026-05-14 4 S 0 60000 70.0187 D 391189 D Common Stock 2026-05-15 4 M 0 45463 8.12 A 436652 D Common Stock 2026-05-15 4 M 0 14537 12.6 A 451189 D Stock Option (Right to Buy) 8.12 2026-05-14 4 M 0 60000 0 D 2029-02-20 Common Stock 60000 144470 D Stock Option (Right to Buy) 8.12 2026-05-15 4 M 0 45463 0 D 2029-02-20 Common Stock 45463 99007 D Stock Option (Right to Buy) 12.6 2026-05-15 4 M 0 7936 0 D 2031-05-25 Common Stock 7936 114007 D Stock Option (Right to Buy) 12.6 2026-05-15 4 M 0 6601 0 D 2034-07-20 Common Stock 6601 184543 D The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $70.00 to $70.45 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 February 21, 2020, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service. 1/48 of the shares subject to the option vested on June 26, 2021, and 1/48 of the shares subject to the option vested in equal monthly installments thereafter, subject to the Reporting Person's continued service. 1/4 of the shares subject to the option vested on January 1, 2024, and 1/48 of the shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service. /s/ Jeffrey Winzeler, Attorney-in-Fact 2026-05-18