<SEC-DOCUMENT>0001280263-21-000016.txt : 20210316
<SEC-HEADER>0001280263-21-000016.hdr.sgml : 20210316
<ACCEPTANCE-DATETIME>20210316191946
ACCESSION NUMBER:		0001280263-21-000016
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210312
FILED AS OF DATE:		20210316
DATE AS OF CHANGE:		20210316

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Chen Yun-Lung
		CENTRAL INDEX KEY:			0001602676

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35667
		FILM NUMBER:		21747751

	MAIL ADDRESS:	
		STREET 1:		3101 JAY STREET
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054

	FORMER NAME:	
		FORMER CONFORMED NAME:	Chen Yen-Lung
		DATE OF NAME CHANGE:	20140314

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMBARELLA INC
		CENTRAL INDEX KEY:			0001280263
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				980459628
		FISCAL YEAR END:			0131

	BUSINESS ADDRESS:	
		STREET 1:		3101 JAY STREET
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054
		BUSINESS PHONE:		408-734-8888

	MAIL ADDRESS:	
		STREET 1:		3101 JAY STREET
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054
</SEC-HEADER>
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<SEQUENCE>1
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    <footnotes>
        <footnote id="F1">The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $111.50 to $111.71 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.</footnote>
        <footnote id="F2">The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $113.03 to $113.31 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.</footnote>
        <footnote id="F3">Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares.</footnote>
        <footnote id="F4">Shares subject to the option vest monthly over four years beginning on August 1, 2011.</footnote>
        <footnote id="F5">On June 7, 2018, reporting person was granted an RSU award covering a target of 6,574 ordinary shares (the &quot;Target RSU Number&quot;), subject to satisfaction of predetermined, performance-based vesting criteria that could result in 0% to 200% of the Target RSU Number becoming eligible to vest, subject to certain adjustments.  On February 28, 2019, the Company's Board of Directors determined the performance criteria had been satisfied at a level that resulted in 200% of the Target RSU Number becoming eligible for time-based vesting. Pursuant to time-based vesting requirements, the award would vest on March 15, 2021, subject to possible adjustment based on a total stockholder return (&quot;TSR&quot;) performance metric for the period February 1, 2018 to January 31, 2021 (the &quot;TSR Period&quot;).  As a result of the Company's TSR performance over the TSR Period, the RSUs eligible to vest were reduced by 25% of the Target RSU Number.  A total of 11,505 ordinary shares were delivered to reporting person.</footnote>
        <footnote id="F6">The restricted stock units vest at the rate of 1/12 per quarter commencing on June 15, 2018.</footnote>
        <footnote id="F7">The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2019.</footnote>
        <footnote id="F8">The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2020.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: /s/ Michael Morehead, Attorney-in-Fact For: Yun-Lung Chen</signatureName>
        <signatureDate>2021-03-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
