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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1280263	Ambarella Inc	AMBA	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1189229	B Christopher Paisley	3101 Jay Street Santa Clara CA 95054		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Ordinary Shares	Acquisiton	2018-09-06	1,000	$6.00	17,765	No	4	M	Direct
Ordinary Shares	Disposition	2018-09-06	1,000	$40.00	16,765	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Ordinary Shares	Non-Qualified Stock Option (right to buy)	Disposition	2018-09-06	1,000	$0.00	1,000	$6.00
Ordinary Shares	Restricted Stock Units	Acquisiton	2018-09-04	5,248	$0.00	5,248	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
9,667		2022-10-08	No	4	M	Direct
5,248		2019-09-15	No	4	A	Direct

Footnotes

The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on June 11, 2018.
Shares subject to the option vest monthly over four years commencing on August 20, 2012.
Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares.
The restricted stock units will vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2018, so as to be 100% vested on September 15, 2019.