AMBARELLA INC — Director's Dealing 2015

Sep 17, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMBARELLA INC (AMBA)
CIK: 0001280263
Period of Report: 2015-09-16

Reporting Person: Day Christopher (VP, Marketing)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-09-16	Ordinary Shares	M	3550.0	—	Acquired	11335	Direct
2015-09-16	Ordinary Shares	S	1880.0	$70.8	Disposed	9455	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-09-16	Restricted Stock Units	$	M	555.0	Disposed	2022-08-27	Ordinary Shares (555)	Direct
2015-09-16	Restricted Stock Units	$	M	938.0	Disposed	2023-08-26	Ordinary Shares (938)	Direct
2015-09-16	Restricted Stock Units	$	M	1094.0	Disposed	2023-08-27	Ordinary Shares (1094)	Direct
2015-09-16	Restricted Stock Units	$	M	963.0	Disposed	2024-09-07	Ordinary Shares (963)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares.

F2: Shares sold to pay tax obligations resulting from the vesting of restricted stock units.

F3: Includes 180 shares acquired under the Company's employee stock purchase plan on September 15, 2015.

F4: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2012.

F5: 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.

F6: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2013.

F7: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2014.