SEC Form 4 · accession 0001280263-15-000033

AMBARELLA INC · AMBA

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — CTO · Director

Period of report

Mar 17, 2015

Accepted (ET)

Mar 19, 2015 · 6:43 pm EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001280263

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Ordinary Shares^F1	Mar 17, 2015	M	10,239	$0.00	A	837,535	D
Ordinary Shares	Mar 17, 2015	S	3,863	$68.22	D	833,672	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Restricted Stock Units^F1,F3	—	Mar 17, 2015	M	764	D	—	Aug 27, 2022	Ordinary Shares	764	4,584	D
Restricted Stock Units^F1,F4	—	Mar 17, 2015	M	3,000	D	—	Aug 26, 2023	Ordinary Shares	3,000	12,000	D
Restricted Stock Units^F1,F5	—	Mar 17, 2015	M	3,500	D	—	Aug 27, 2023	Ordinary Shares	3,500	35,000	D
Restricted Stock Units^F1,F6	—	Mar 17, 2015	M	2,975	D	—	Sep 7, 2024	Ordinary Shares	2,975	41,650	D

F1Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares.
F2Shares sold to pay tax obligations resulting from the vesting of restricted stock units.
F3The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2012.
F4The 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.
F5The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2013.
F6The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2014.