X0508 4 2026-02-18 0001500412 Ambiq Micro, Inc. AMBQ 0001835160 HSIEH Wen Hsuan C/O AMBIQ MICRO, INC. 6500 RIVER PLACE BLVD BUILDING 7 STE 200 AUSTIN TX 78730 true false false false 0 Common Stock 2026-02-18 4 M 0 238931 12.6 A 633920 I By: Matter Venture Partners Fund I, L.P. Warrant (Right to Buy) 12.6 2026-02-18 4 M 0 238931 0 D 2034-06-01 Common Stock 238931 0 I By: Matter Venture Partners Fund I, L.P. The Reporting Person exercises sole voting and dispositive control over the shares held by Matter Venture Partners Fund I, L.P. The warrant is exercisable in whole or in part, on the earlier of (i) June 1, 2028, (ii) immediately prior to the completion of the Issuer's initial public offering or (iii) immediately prior to the consummation of an acquisition or asset transfer of the Issuer, until the warrant's expiration on June 1, 2034. /s/ Jeffrey Winzeler, Attorney-in-Fact 2026-02-20