Chi-Hong Ju - 02 Mar 2026 Form 4 Insider Report for AMBARELLA INC (AMBA)

Role: Senior VP, Systems & GM, Asia
Signature: By: /s/ Michael Morehead, Attorney-in-Fact For: Chi-Hong Ju
Issuer symbol: AMBA
Transactions as of: 02 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 04 Mar 2026, 17:38:53 UTC
Previous filing: 07 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Ju Chi-Hong	Senior VP, Systems & GM, Asia	3001 TASMAN DRIVE, SANTA CLARA	By: /s/ Michael Morehead, Attorney-in-Fact For: Chi-Hong Ju	04 Mar 2026	0001882831

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMBA	Ordinary Shares	Award		+17,329	+12%	$0.000000^*	159,188	02 Mar 2026	Direct	F1
holding	AMBA	Ordinary Shares						8,000	02 Mar 2026	by Foundation

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	AMBA	Performance Stock Units	Award		+17,329		$0.000000^*	17,329	02 Mar 2026	Ordinary Shares	17,329		Direct	F2, F3

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

Explanation of Responses:

Id	Content
F1	The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2026.
F2	Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares.
F3	Reporting person was granted an award of performance-based RSUs covering a target number of ordinary shares (the "Target RSU Number"). Pursuant to time-based vesting requirements, 100% of the Target RSU Number is scheduled to vest on March 15, 2029, subject to continued service requirements through such date. In addition, the number of shares subject to the RSUs may be decreased by up to 100% or increased by up to 150% of the Target RSU Number or may remain the same, based on the Company's total shareholder return and revenue growth rate over the period of February 1, 2026 through January 31, 2029.