X0609 4 2026-05-14 0001500412 Ambiq Micro, Inc. AMBQ 0001312143 Winzeler Jeffrey G false C/O AMBIQ MICRO, INC. 6500 RIVER PLACE BLVD BUILDING 7 STE 200 AUSTIN TX 78730 false true false false Chief Financial Officer 0 Common Stock 2026-05-14 4 M 0 26000 16.8 A 120395 D Common Stock 2026-05-14 4 S 0 25918 69.8981 D 94477 D Common Stock 2026-05-14 4 S 0 82 70.65 D 94395 D Common Stock 2026-05-15 4 M 0 5952 16.8 A 100347 D Stock Option (Right to Buy) 16.8 2026-05-14 4 M 0 26000 0 D 2035-06-09 Common Stock 26000 116857 D Stock Option (Right to Buy) 16.8 2026-05-15 4 M 0 5952 0 D 2035-06-09 Common Stock 5952 110905 D The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.61 to $70.435 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. 47,619 shares subject to the option vested on October 1, 2025, 1/4 of the remaining 95,238 shares subject to the option vest on June 2, 2026, and 1/36 of the remaining shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service. /s/ Jeffrey Winzeler 2026-05-18