Sean Chihhsiang Chen - 06 Mar 2026 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: 06 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 10 Mar 2026, 17:02:45 UTC
Previous filing: 06 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chen Sean Chihhsiang	President and COO	C/O AMBIQ MICRO, INC., 6500 RIVER PLACE BLVD BUILDING 7 STE 200, AUSTIN	/s/ Jeffrey Winzeler, Attorney-in-Fact	10 Mar 2026	0002078559

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMBQ	Common Stock	Award		+64,246	+115%	$0.000000^*	120,275	06 Mar 2026	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 September 1, 2027, 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 September 1, 2027, 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).