<SEC-DOCUMENT>0001209191-21-053729.txt : 20210827
<SEC-HEADER>0001209191-21-053729.hdr.sgml : 20210827
<ACCEPTANCE-DATETIME>20210827185242
ACCESSION NUMBER:		0001209191-21-053729
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210825
FILED AS OF DATE:		20210827
DATE AS OF CHANGE:		20210827

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Agarwal Amit
		CENTRAL INDEX KEY:			0001540517

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39051
		FILM NUMBER:		211220496

	MAIL ADDRESS:	
		STREET 1:		5435 NE DAWSON CREEK DR.
		CITY:			HILLSBORO
		STATE:			OR
		ZIP:			97124

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Datadog, Inc.
		CENTRAL INDEX KEY:			0001561550
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				272825503
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		620 EIGHTH AVENUE, 45TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
		BUSINESS PHONE:		866-329-4466

	MAIL ADDRESS:	
		STREET 1:		620 EIGHTH AVENUE, 45TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
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                <value></value>
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                <transactionShares>
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                <transactionPricePerShare>
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        <derivativeTransaction>
            <securityTitle>
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            <transactionTimeliness>
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                    <value>0.00</value>
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                    <value>D</value>
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                <footnoteId id="F1"/>
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                <sharesOwnedFollowingTransaction>
                    <value>610000</value>
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                <directOrIndirectOwnership>
                    <value>I</value>
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                    <value>By GRAT</value>
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            <securityTitle>
                <value>Class B Common Stock</value>
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                <footnoteId id="F1"/>
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            <exerciseDate>
                <footnoteId id="F1"/>
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            <expirationDate>
                <footnoteId id="F1"/>
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                <underlyingSecurityTitle>
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                    <footnoteId id="F1"/>
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                <sharesOwnedFollowingTransaction>
                    <value>1148365</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>I</value>
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                <natureOfOwnership>
                    <value>By GRAT</value>
                    <footnoteId id="F11"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain &quot;Permitted Transfers&quot; as defined in the Issuer's amended and restated certificate of incorporation, (ii) the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.</footnote>
        <footnote id="F2">Shares sold pursuant to a 10b5-1 plan entered into on September 2, 2020.</footnote>
        <footnote id="F3">Price reported is a weighted-average sales price. The shares were sold at prices ranging from $134.56 to $135.55. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F4">Price reported is a weighted-average sales price. The shares were sold at prices ranging from $135.56 to $136.09. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F5">Shares are held directly by Amit Agarwal 2019 GRAT, of which the Reporting Person is Trustee.</footnote>
        <footnote id="F6">Price reported is a weighted-average sales price. The shares were sold at prices ranging from $134.49 to $135.47. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F7">Price reported is a weighted-average sales price. The shares were sold at prices ranging from $135.49 to $136.12. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F8">Shares are held by Reporting Person's spouse.</footnote>
        <footnote id="F9">Price reported is a weighted-average sales price. The shares were sold at prices ranging from $134.79 to $135.76. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F10">Price reported is a weighted-average sales price. The shares were sold at prices ranging from $135.80 to $136.00. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F11">Shares are held directly by Amit Agarwal 2018 GRAT, of which the Reporting Person is Trustee.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Amit Agarwal, by /s/ Ron A. Metzger, Attorney-in-Fact</signatureName>
        <signatureDate>2021-08-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
