<SEC-DOCUMENT>0001209191-21-046378.txt : 20210712
<SEC-HEADER>0001209191-21-046378.hdr.sgml : 20210712
<ACCEPTANCE-DATETIME>20210712211401
ACCESSION NUMBER:		0001209191-21-046378
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210712
FILED AS OF DATE:		20210712
DATE AS OF CHANGE:		20210712

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PAISLEY CHRISTOPHER B
		CENTRAL INDEX KEY:			0001189229

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38897
		FILM NUMBER:		211086650

	MAIL ADDRESS:	
		STREET 1:		14870 THREE OAKS COURT
		CITY:			SARATOGA
		STATE:			CA
		ZIP:			95070

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Fastly, Inc.
		CENTRAL INDEX KEY:			0001517413
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				275411834
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		475 BRANNAN
		STREET 2:		SUITE 300
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94107
		BUSINESS PHONE:		415-525-3481

	MAIL ADDRESS:	
		STREET 1:		475 BRANNAN
		STREET 2:		SUITE 300
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Skycache, Inc.(DE)
		DATE OF NAME CHANGE:	20110405
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94107</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>0</isOfficer>
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            <isOther>0</isOther>
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    <footnotes>
        <footnote id="F1">On October 12, 2020, the Issuer's outstanding shares of Class B Common Stock represented less than 10% of the aggregate number of shares of the then outstanding Class A Common Stock and Class B Common Stock. As a result, each share of the Issuer's Class B Common Stock automatically converted into one share of Class A Common Stock pursuant to the Issuer's amended and restated certificate of incorporation, as amended, on July 12, 2021.</footnote>
        <footnote id="F2">In connection with the automatic conversion described in footnote (1), outstanding Class B Common Stock options that were issued under the Issuer's 2011 Equity Incentive Plan remain unchanged, except that the underlying shares are now Class A Common Stock.</footnote>
        <footnote id="F3">1/48th of the stock option vested and became exercisable on August 31, 2018, and thereafter vested as to 1/48th of the shares in equal monthly installments, until such time as the option is 100% vested, subject to the continuing employment of the Reporting Person on each vesting date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Seth Gottlieb, Attorney-in-Fact</signatureName>
        <signatureDate>2021-07-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
