AMBARELLA INC — Director's Dealing 2018

Sep 20, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMBARELLA INC (AMBA)
CIK: 0001280263
Period of Report: 2018-09-18

Reporting Person: Wang Feng-Ming (Director, CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-09-18	Ordinary Shares	M	13651	—	Acquired	408938	Direct
2018-09-19	Ordinary Shares	S	10727	$35.56	Disposed	398211	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-09-18	Restricted Stock Units	$	M	4929	Disposed	2019-03-15	Ordinary Shares (4929)	Direct
2018-09-18	Restricted Stock Units	$	M	3472	Disposed	2021-06-15	Ordinary Shares (3472)	Direct
2018-09-18	Restricted Stock Units	$	M	5250	Disposed	2024-09-07	Ordinary Shares (5250)	Direct

Footnotes

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

F2: Includes 234 shares acquired under the Company's employee stock purchase plan on September 17, 2018.

F3: Shares sold to pay tax obligations resulting from the vesting of restricted stock awards and restricted stock units.

F4: The RSUs vest as to 1/8 of the RSUs on June 15, 2017 and 1/8 of the RSUs will vest each three months thereafter such that the RSUs are 100% vested on March 15, 2019.

F5: The restricted stock units vest at the rate of 1/12 per quarter commencing on June 15, 2018.

F6: The restricted stock units vest at the rate of 1/16 per quarter commencing on September 15, 2014.