X0609 4 2026-10-15 0001500412 Ambiq Micro, Inc. AMBQ 0002078339 Hanson Scott McLean false C/O AMBIQ MICRO, INC. 6500 RIVER PLACE BLVD BUILDING 7 STE 200 AUSTIN TX 78730 true true false false Chief Technology Officer 1 Common Stock 2026-10-15 4 M 0 7000 8.12 A 219546 D Common Stock 2026-10-15 4 S 0 600 49.0592 D 218946 D Common Stock 2026-10-15 4 S 0 900 50.0827 D 218046 D Common Stock 2026-10-15 4 S 0 3700 51.121 D 214346 D Common Stock 2026-10-15 4 S 0 1800 51.8615 D 212546 D Stock Option (Right to Buy) 8.12 2026-10-15 4 M 0 7000 0 D 2028-10-01 Common Stock 7000 38279 D The transactions reported in this Form 4 occurred under a Rule 10b5-1 plan adopted by the Reporting Person on May 15, 2026. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $48.61 to $49.59 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 $49.74 to $50.67 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 $50.74 to $51.65 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 $51.74 to $52.00 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 August 16, 2019, 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 2026-10-16