KPCB XVI Associates, LLC - Jul 31, 2025 Form 4 Insider Report for Ambiq Micro, Inc. (AMBQ)

Role: 10%+ Owner
Signature: /s/ Susan Biglieri, Chief Financial Officer
Stock symbol: AMBQ
Transactions as of: Jul 31, 2025
Transactions value $: $0
Form type: 4
Date filed: 7/31/2025, 07:37 PM
Previous filing: Jul 29, 2025
SEC: View on sec.gov

Reporting Owners (2)

Name	Relationship	Address	Signature	Signature date	CIK
KPCB XVI Associates, LLC	10%+ Owner	C/O KLEINER PERKINS CAUFIELD & BYERS, 2750 SAND HILL ROAD, MENLO PARK	/s/ Susan Biglieri, Chief Financial Officer	2025-07-31	0001611734
Kleiner Perkins Caufield & Byers XVI, LLC	10%+ Owner	C/O KLEINER PERKINS CAUFIELD & BYERS, 2750 SAND HILL ROAD, MENLO PARK	/s/ Susan Biglieri, Chief Financial Officer	2025-07-31	0001611731

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMBQ	Common Stock	Conversion of derivative security		+748K	+176.41%		1.17M	Jul 31, 2025	By: KPCB Holdings, Inc., as nominee	F1, F2, F3
transaction	AMBQ	Common Stock	Conversion of derivative security		+99K	+8.44%		1.27M	Jul 31, 2025	By KPCB Holdings, Inc., as nominee	F1, F2, F4
transaction	AMBQ	Common Stock	Conversion of derivative security		+23.3K	+1.83%		1.29M	Jul 31, 2025	By KPCB Holdings, Inc., as nominee	F2, F5, F6
transaction	AMBQ	Common Stock	Conversion of derivative security		+195K	+15.04%		1.49M	Jul 31, 2025	By KPCB Holdings, Inc., as nominee	F2, F7, F8

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AMBQ	Series C Convertible Preferred Stock	Conversion of derivative security	$0	-748K	-100%	$0.00	0	Jul 31, 2025	Common Stock	748K		By: KPCB Holdings, Inc., as nominee	F1, F2, F3
transaction	AMBQ	Series D Convertible Preferred Stock	Conversion of derivative security	$0	-99K	-100%	$0.00	0	Jul 31, 2025	Common Stock	99K		By: KPCB Holdings, Inc., as nominee	F1, F2, F4
transaction	AMBQ	Series E Convertible Preferred Stock	Conversion of derivative security	$0	-22.6K	-100%	$0.00	0	Jul 31, 2025	Common Stock	23.3K		By: KPCB Holdings, Inc., as nominee	F2, F5, F6
transaction	AMBQ	Series F Convertible Preferred Stock	Conversion of derivative security	$0	-171K	-100%	$0.00	0	Jul 31, 2025	Common Stock	195K		By: KPCB Holdings, Inc., as nominee	F2, F7, F8

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

Explanation of Responses:

Id	Content
F1	The Series C Convertible Preferred Stock and Series D Convertible Preferred Stock automatically converted into Common Stock on a one-for-one basis immediately prior to the closing of the Issuer's initial public offering of common stock and had no expiration date.
F2	All shares are held for convenience in the name of "KPCB Holdings, Inc., as nominee" for the accounts of such individuals and entities. The managing member of Kleiner Perkins Caufield & Byers XVI, LLC ("KPCB XVI") and KPCB XVI Founders Fund, LLC ("KPCB XVI Founders") is KPCB XVI Associates, LLC ("KPCB XVI Associates"). L. John Doerr, Beth Seidenberg, Randy Komisar, Theodore E. Schlein, and Wen Hsieh, the managing members of KPCB XVI Associates, exercise shared voting and dispositive control over the shares held by KPCB XVI and KPCB XVI Founders. Such managing members disclaim beneficial ownership of all shares held by KPCB XVI and KPCB XVI Founders except to the extent of their pecuniary interest therein.
F3	Consists of 723,286 shares of Series C Convertible Preferred Stock held by KPCB XVI that automatically converted into 723,286 shares of Common Stock, and 24,760 shares of Series C Convertible Preferred Stock held by KPCB XVI Founders that automatically converted into 24,760 shares of Common Stock.
F4	Consists of 95,683 shares of Series D Convertible Preferred Stock held by KPCB XVI that automatically converted into 95,683 shares of Common Stock, and 3,275 shares of Series D Convertible Preferred Stock held by KPCB XVI Founders that automatically converted into 3,275 shares of Common Stock.
F5	The Series E Convertible Preferred Stock automatically converted immediately prior to the closing of the Issuer's initial public offering and had no expiration date. 22,594 outstanding shares of Series E Convertible Preferred Stock automatically converted into 23,294 shares of Common Stock.
F6	Consists of 21,846 shares of Series E Convertible Preferred Stock held by KPCB XVI that automatically converted into 22,523 shares of Common Stock, and 748 shares of Series E Convertible Preferred Stock held by KPCB XVI Founders that automatically converted into 771 shares of Common Stock.
F7	The Series F Convertible Preferred Stock automatically converted immediately prior to the closing of the Issuer's initial public offering and had no expiration date. 171,064 outstanding shares of Series F Convertible Preferred Stock automatically converted into 194,618 shares of Common Stock.
F8	Consists of 165,402 shares of Series F Convertible Preferred Stock held by KPCB XVI that automatically converted into 188,177 shares of Common Stock, and 5,662 shares of Series F Convertible Preferred Stock held by KPCB XVI Founders that automatically converted into 6,441 shares of Common Stock.