Fumihide Esaka - Oct 2, 2025 Form 4 Insider Report for Ambiq Micro, Inc. (AMBQ)

Role: Chief Executive Officer, Director
Signature: /s/ Jeffrey Winzeler, Attorney-in-Fact
Stock symbol: AMBQ
Transactions as of: Oct 2, 2025
Transactions value $: $0
Form type: 4
Date filed: 10/6/2025, 05:55 PM
Previous filing: Jul 29, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Esaka Fumihide	Chief Executive Officer, Director	AUSTIN	/s/ Jeffrey Winzeler, Attorney-in-Fact	2025-10-06	0002078454

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMBQ	Common Stock	Award	$0	+160K	+940.3%	$0.00	177K	Oct 2, 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. 25% of the shares subject to the RSU will vest on October 1, 2026, and 1/12 of the shares subject to the RSU will vest quarterly thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).

Content

Represents the grant of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. 25% of the shares subject to the RSU will vest on October 1, 2026, and 1/12 of the shares subject to the RSU will vest quarterly thereafter, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2025 Equity Incentive Plan).