<SEC-DOCUMENT>0001561550-23-000027.txt : 20230518
<SEC-HEADER>0001561550-23-000027.hdr.sgml : 20230518
<ACCEPTANCE-DATETIME>20230518161734
ACCESSION NUMBER:		0001561550-23-000027
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20230518
DATE AS OF CHANGE:		20230518

FILER:

	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

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39051
		FILM NUMBER:		23936328

	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>DEFA14A
<SEQUENCE>1
<FILENAME>datadogproxysupplementfy20.htm
<DESCRIPTION>DEFA14A
<TEXT>
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<title>Document</title></head><body><div id="i48412608801b477ca70111316e43d0a6_1"></div><div style="min-height:42.75pt;width:100%"><div><font><br></font></div></div><div style="margin-top:4pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:18pt;font-weight:700;line-height:100%">UNITED STATES </font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:18pt;font-weight:700;line-height:100%">SECURITIES AND EXCHANGE COMMISSION </font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:100%">Washington, D.C. 20549 </font></div><div style="margin-top:5pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:18pt;font-weight:700;line-height:100%">SCHEDULE 14A INFORMATION </font></div><div style="margin-top:5pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:100%">Proxy Statement Pursuant to Section 14(a) of the </font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:100%">Securities Exchange Act of 1934 </font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:12pt;font-weight:700;line-height:100%">(Amendment No. ) </font></div><div style="margin-top:5pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Filed by the Registrant </font><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9746;</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> Filed by a Party other than the Registrant </font><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;</font><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </font></div><div style="margin-top:5pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Check the appropriate box&#58; </font></div><div><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:91.374%"><tr><td style="width:1.0%"></td><td style="width:2.900%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.920%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:93.780%"></td><td style="width:0.1%"></td></tr><tr style="height:0pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Preliminary Proxy Statement</font></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))</font></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Definitive Proxy Statement</font></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9746;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Definitive Additional Materials</font></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Soliciting Material Pursuant to &#167; 240.14a-12</font></td></tr></table></div><div style="margin-top:5pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:22pt;font-weight:700;line-height:100%">DATADOG, INC. </font></div><div style="text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">(Name of Registrant as Specified In Its Charter) </font></div><div style="margin-top:5pt;text-align:center"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant) </font></div><div style="margin-top:5pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Payment of Filing Fee (Check the appropriate box) </font></div><div><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:91.374%"><tr><td style="width:1.0%"></td><td style="width:2.900%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.920%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:93.780%"></td><td style="width:0.1%"></td></tr><tr style="height:0pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9746;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">No fee required.</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Title of each class of securities to which transaction applies&#58;</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Aggregate number of securities to which transaction applies&#58;</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the filing fee is calculated and state how it was determined)&#58;</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Proposed maximum aggregate value of transaction&#58;</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Total fee paid&#58;</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Fee paid previously with preliminary materials.</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#9744;</font></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.</font></td></tr><tr style="height:6pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Amount Previously Paid&#58;</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Form, Schedule or Registration Statement No.&#58;</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Filing Party&#58;</font></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Date Filed&#58;</font></td></tr></table></div><div><font><br></font></div><div><font><br></font></div><div style="height:42.75pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:39.327%"><tr><td style="width:1.0%"></td><td style="width:98.900%"></td><td style="width:0.1%"></td></tr><tr style="height:15pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr></table></div></div></div><hr style="page-break-after:always"><div style="min-height:42.75pt;width:100%"><div><font><br></font></div></div><div style="margin-top:6pt"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Dear Stockholder&#58;</font></div><div style="margin-top:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">This proxy statement supplement, dated May 18, 2023 (this &#8220;Supplement&#8221;), supplements the definitive proxy statement on Schedule 14A of Datadog, Inc. a Delaware corporation (the &#8220;Company&#8221;), dated April 21, 2023 (the &#8220;Proxy Statement&#8221;), for the 2023 Annual Meeting of Stockholders (the &#8220;Annual Meeting&#8221;) of the Company to be held on Thursday, June 8, 2023. Capitalized terms used in this Supplement and not otherwise defined herein have the meanings given to them in the Proxy Statement.</font></div><div style="margin-top:18pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Amendment and Restatement of&#160;Non-Employee&#160;Director Compensation Policy</font></div><div style="margin-top:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company maintains&#160;a&#160;non-employee&#160;director&#160;compensation policy,&#160;which originally&#160;became&#160;effective&#160;in September 2019 in connection with our initial public offering, and which was subsequently amended and restated in May 2021. In May 2023, the compensation committee reviewed a comprehensive assessment of our&#160;non-employee&#160;director compensation program prepared by Compensia, which included a survey of competitive peer group market data. Following this review, the compensation committee approved changes to the non-employee director compensation program in order to ensure ongoing competitiveness. The non-employee director compensation policy as amended and restated on May&#160;9, 2023, is set forth below. </font></div><div style="margin-bottom:12pt;margin-top:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Cash Compensation</font></div><div style="margin-bottom:12pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8226;</font><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">$50,000 per year for each non-employee director (increased from $30,000)&#59;</font></div><div style="margin-bottom:12pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8226;</font><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">Additional $24,000 per year for the lead non-employee director (if applicable) in addition to the annual amount above (increased from an additional $18,000)&#59; </font></div><div style="margin-bottom:12pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8226;</font><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">$25,000 per year for chair of the audit committee (increased from $20,000) or $12,500 per year for each other member of the audit committee (increased from $10,000)&#59;</font></div><div style="margin-bottom:12pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8226;</font><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">$20,000 per year for chair of the compensation committee (increased from $15,000) or $10,000 per year for each other member of the compensation committee (increased from $7,500)&#59; and</font></div><div style="margin-bottom:12pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><font style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#8226;</font><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">$12,000 per year for chair of the nominating and corporate governance committee (increased from $8,000) or $6,000 per year for each other member of the nominating and corporate governance committee (increased from $4,000).</font></div><div style="margin-bottom:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The cash compensation above is payable to our eligible non-employee directors in equal quarterly installments in arrears, prorated for any partial quarter of service.</font></div><div style="margin-bottom:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:100%">Equity Compensation</font></div><div style="margin-bottom:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In addition to the cash compensation structure described above,&#160;the amended and restated non-employee director compensation policy provides for the following equity incentive compensation program for non-employee directors. Only the amount of the annual grant was changed in connection with the May 2023 amendment and restatement, the other elements of director equity compensation remained unchanged. All such equity compensation will be granted under the 2019 Plan or any successor equity plan.</font></div><div style="margin-bottom:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Retainer Grant</font><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">. Each non-employee director may elect to convert his or her cash compensation under the policy into an award of restricted stock units (the &#8220;retainer grant&#8221;). If a non-employee director timely makes this election, each such retainer grant will be automatically granted on the first business day following the date the corresponding cash compensation otherwise would be paid under the policy. Each retainer grant will cover a number of shares of our Class A common stock equal to (A) the aggregate amount of the corresponding cash compensation otherwise payable to the non-employee director divided by (B) the closing sales price per share of our Class A common stock on the date the corresponding cash compensation otherwise would be paid (or, if such date is not a business day, on the first business day thereafter), rounded down to the nearest whole share. In addition, each retainer grant will be fully vested on the grant date.</font></div><div style="height:42.75pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:39.327%"><tr><td style="width:1.0%"></td><td style="width:98.900%"></td><td style="width:0.1%"></td></tr><tr style="height:15pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr></table></div></div></div><hr style="page-break-after:always"><div style="min-height:42.75pt;width:100%"><div><font><br></font></div></div><div style="margin-bottom:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Initial Grant</font><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">. Each non-employee director who joins our board of directors will automatically, upon the date of his or her initial election or appointment to be a non-employee director (or, if such date is not a business day, on the first business day thereafter), be granted a one-time, initial restricted stock unit award (the &#8220;initial grant&#8221;), covering a number of shares of our Class A common stock equal to (A) $400,000 divided by (B) the closing sales price per share of our Class A common stock on the applicable grant date, rounded down to the nearest whole share. Each initial grant will vest in three equal annual installments over the three-year period following the grant date, subject to continuous service through each applicable vesting date.</font></div><div style="margin-top:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Annual Grant</font><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">. On the date of each annual meeting of our stockholders, each person who is then a non-employee director of ours will automatically be granted an annual restricted stock unit award (the &#8220;annual grant&#8221;), covering a number of shares of our Class A common stock equal to (A) $250,000 (increased from $200,000) divided by (B) the closing sales price per share of our Class A common stock on the date of the applicable annual stockholder meeting (or, if such date is not a business day, the first business day thereafter). Each annual grant will vest on the earlier of the one-year anniversary of the award&#8217;s grant date or the date of our next annual stockholder meeting following the award&#8217;s grant date, subject to continuous service through the vesting date.</font></div><div style="margin-top:12pt;text-align:justify"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Each non-employee director&#8217;s then-outstanding equity awards granted under the policy (and any other then-outstanding equity awards held by the non-employee director that were outstanding and unvested immediately prior to the date of the execution of the underwriting agreement related to our initial public offering) will become fully vested upon a change in control (as defined in our 2019 Plan), subject to the non-employee director remaining in continuous service until immediately prior to the closing of the change in control.</font></div><div style="margin-top:24pt;text-align:center"><font style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">THIS SUPPLEMENT SHOULD BE READ IN CONJUNCTION WITH THE PROXY STATEMENT. EXCEPT AS SPECIFICALLY SUPPLEMENTED BY THE INFORMATION CONTAINED HEREIN, THIS SUPPLEMENT DOES NOT MODIFY ANY OTHER INFORMATION SET FORTH IN THE PROXY STATEMENT.</font></div><div><font><br></font></div><div style="margin-bottom:0.5pt;margin-top:0.5pt"><font style="color:#ffffff;font-family:'Times New Roman',sans-serif;font-size:0.5pt;font-weight:400;line-height:100%">DATADOG, INC. 620 8TH AVENUE, 45TH FLOOR proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the stockholder meeting to be held on June 10, 2021. Get informed before you vote View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 27, 2021. If you would like to request a copy of the material(s) for this and&#47;or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial&#64;proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. For complete information and to vote, visit www.ProxyVote.com Control # Smartphone users Point your camera here and vote without entering a control number Vote Virtually at the Meeting* June 10, 2021 2&#58;00 PM, EDT Virtually at&#58; www.virtualshareholdermeeting.com&#47;DDOG2021 *Please check the meeting materials for any special requirements for meeting attendance. V1 </font></div><div style="text-align:center"><img alt="image_0a.jpg" src="image_0a.jpg" style="height:3px;margin-bottom:5pt;vertical-align:text-bottom;width:624px"></div><div style="height:42.75pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:39.327%"><tr><td style="width:1.0%"></td><td style="width:98.900%"></td><td style="width:0.1%"></td></tr><tr style="height:15pt"><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td></tr></table></div></div></div></body></html>
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