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Filing Details

Accession Number:: 0001280263-14-000146
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2014-09-17 19:05:37
Reporting Period:: 2014-09-15

Filing Date:: 2014-09-17
Accepted Time:: 2014-09-17 19:05:37
SEC Url:: Form 4 Filing

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	Cto	Yes	Yes	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Ordinary Shares	Acquisiton	2014-09-15	10,000	$8.82	874,591	No	4	M	Direct
Ordinary Shares	Disposition	2014-09-15	8,200	$35.55	866,391	No	4	S	Direct
Ordinary Shares	Disposition	2014-09-15	1,800	$36.53	864,591	No	4	S	Direct
Ordinary Shares	Acquisiton	2014-09-16	3,764	$0.00	868,355	No	4	M	Direct
Ordinary Shares	Disposition	2014-09-16	3,881	$33.66	864,474	No	4	S	Direct

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

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Ordinary Shares	Non-Qualified Stock Option (right to buy)	Disposition	2014-09-15	10,000	$0.00	10,000	$8.82
Ordinary Shares	Restricted Stock Units	Disposition	2014-09-16	764	$0.00	764	$0.00
Ordinary Shares	Restricted Stock Units	Disposition	2014-09-16	3,000	$0.00	3,000	$0.00

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
20,312	2020-11-02	No	4	M	Direct
6,112	2022-08-27	No	4	M	Direct
18,000	2023-08-26	No	4	M	Direct

Footnotes

The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 28, 2013.
The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $35.21 to $36.15 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4.
The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $36.25 to $37.05 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4.
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.
Shares subject to the option vest monthly over four years beginning on August 1, 2010.
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 24,000 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.