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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
1558646	George Laplante	3101 Jay Street Santa Clara CA 95054	Chief Financial Officer	No	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	2014-09-16	2,945	$0.00	51,491	No	4	M	Direct
Ordinary Shares	Disposition	2014-09-16	2,976	$33.66	48,515	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	2014-09-16	695	$0.00	695	$0.00
Ordinary Shares	Restricted Stock Units	Disposition	2014-09-16	2,250	$0.00	2,250	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
5,556		2022-08-27	No	4	M	Direct
13,500		2023-08-26	No	4	M	Direct

Footnotes

Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares.
Includes 364 shares acquired under the Company's employee stock purchase plan on September 15, 2014.
Shares sold to pay tax obligations resulting from the vesting of restricted stock units.
The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2012.
On August 27, 2013 the reporting person was granted RSUs convertible into 18,000 Ordinary Shares based on Issuer's determination of the satisfaction of certain performance goals for the fiscal year ended January 31, 2014. The performance criteria were achieved, and the RSUs become eligible for time-based vesting commencing on March 15, 2014.
The RSUs vested as to 1/8 of the RSUs on June 15, 2014 and 1/8 of the RSU's will vest each three months thereafter such that the RSUs are 100% vested on March 15, 2016.