David Jeffrey Richardson - 15 Dec 2025 Form 4 Insider Report for AMBARELLA INC (AMBA)

Role: Director
Signature: By: /s/ Michael Morehead, Attorney-in-Fact For: David Jeffrey Richardson
Issuer symbol: AMBA
Transactions as of: 15 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 17 Dec 2025, 16:48:09 UTC
Previous filing: 15 Dec 2025
Next filing: 19 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
RICHARDSON DAVID JEFFREY	Director	3001 TASMAN DRIVE, SANTA CLARA	By: /s/ Michael Morehead, Attorney-in-Fact For: David Jeffrey Richardson	17 Dec 2025	0001329724

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMBA	Ordinary Shares	Gift	$0	-2,531	-50%	$0.000000	2,498	15 Dec 2025	Direct	F1
transaction	AMBA	Ordinary Shares	Gift	$0	+2,531	+11%	$0.000000	25,812	15 Dec 2025	by Family Trust	F1

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

Explanation of Responses:

Id	Content
F1	Represents ordinary shares transferred to a family trust of which the reporting person is a co-trustee (the "Family Trust"). The reporting person disclaims Section 16 beneficial ownership of such shares except to the extent, if any, of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of these shares for purposes of Section 16 or for any other purpose.

Content

Represents ordinary shares transferred to a family trust of which the reporting person is a co-trustee (the "Family Trust"). The reporting person disclaims Section 16 beneficial ownership of such shares except to the extent, if any, of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of these shares for purposes of Section 16 or for any other purpose.