Sean Chihhsiang Chen - 02 Oct 2025 Form 4 Insider Report for Ambiq Micro, Inc. (AMBQ)

Role: President and COO
Signature: /s/ Jeffrey Winzeler, Attorney-in-Fact
Issuer symbol: AMBQ
Transactions as of: 02 Oct 2025
Net transactions value: $0
Form type: 4
Filing time: 06 Oct 2025, 17:56:28 UTC
Previous filing: 29 Jul 2025
Next filing: 10 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chen Sean Chihhsiang	President and COO	AUSTIN	/s/ Jeffrey Winzeler, Attorney-in-Fact	06 Oct 2025	0002078559

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMBQ	Common Stock	Award	$0	+56,029		$0.000000	56,029	02 Oct 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).