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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1280263	Ambarella Inc	AMBA	Semiconductors & Related Devices (3674)	980459628

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1558645	Leslie Kohn	3101 Jay Street Santa Clara CA 95054	Chief Technology Officer	Yes	Yes	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	2020-03-17	15,403	$0.00	942,174	No	4	M	Direct
Ordinary Shares	Disposition	2020-03-17	6,607	$38.99	935,567	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	Restricted Stock Units	Disposition	2020-03-17	11,199	$0.00	11,199	$0.00
Ordinary Shares	Restricted Stock Units	Disposition	2020-03-17	4,037	$0.00	4,037	$0.00
Ordinary Shares	Restricted Stock Units	Disposition	2020-03-17	2,967	$0.00	2,967	$0.00

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2020-03-15	No	4	M	Direct
20,185	2021-06-15	No	4	M	Direct
23,736	2022-03-15	No	4	M	Direct

Footnotes

Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares.
Shares sold to pay tax obligations resulting from the vesting of restricted stock units.
On March 28, 2017, reporting person was granted an RSU award covering a target of 11,199 ordinary shares (the "Target RSU Number"), subject to satisfaction of predetermined, performance-based vesting criteria that could result in 0% - 150% of the Target RSU Number becoming eligible to vest, subject to certain adjustments. On February 26, 2018, the Company's Board of Directors determined the performance criteria for the RSUs had been satisfied at a level that resulted in 100% of the Target RSU Number becoming eligible for time-based vesting. Pursuant to time-based vesting requirements, 100% of the award would vest on March 15, 2020, subject to possible adjustment based on a total stockholder return ("TSR") performance metric covering the period of February 1, 2017 to January 31, 2020 (the "TSR Period"). As a result of the Company's TSR performance over the TSR Period, the RSUs eligible to vest were reduced by 25%. A total of 8,399 ordinary shares were delivered to reporting person.
The restricted stock units vest at the rate of 1/12 per quarter commencing on June 15, 2018.
The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2019.