Datadog, Inc. — Director's Dealing 2021

Oct 9, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2021-10-06

Reporting Person: Le-Quoc Alexis (Director, President & CTO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-10-06	Class A Common Stock	C	257520	$0.00	Acquired	257520	Indirect
2021-10-06	Class A Common Stock	S	7279	$141.0817	Disposed	250241	Indirect
2021-10-06	Class A Common Stock	S	15254	$142.0773	Disposed	234987	Indirect
2021-10-06	Class A Common Stock	S	123687	$143.3134	Disposed	111300	Indirect
2021-10-06	Class A Common Stock	S	80150	$144.1429	Disposed	31150	Indirect
2021-10-06	Class A Common Stock	S	28350	$145.007	Disposed	2800	Indirect
2021-10-06	Class A Common Stock	S	2800	$145.8759	Disposed	0	Indirect
2021-10-06	Class A Common Stock	C	56784	$0.00	Acquired	57404	Indirect
2021-10-06	Class A Common Stock	S	3100	$141.4093	Disposed	54304	Indirect
2021-10-06	Class A Common Stock	S	2736	$142.3163	Disposed	51568	Indirect
2021-10-06	Class A Common Stock	S	30694	$143.3927	Disposed	20874	Indirect
2021-10-06	Class A Common Stock	S	15891	$144.3481	Disposed	4983	Indirect
2021-10-06	Class A Common Stock	S	4263	$145.2561	Disposed	720	Indirect
2021-10-06	Class A Common Stock	S	100	$146.11	Disposed	620	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-10-06	Class B Common Stock	$	C	257520	Disposed		Class A Common Stock (257520)	Indirect
2021-10-06	Class B Common Stock	$	C	56784	Disposed		Class A Common Stock (56784)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	174764	Direct

Footnotes

F1: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, 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 "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the nine-month anniversary of 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.

F2: Shares are held by the Alexis Le-Quoc Revocable Trust.

F3: Shares sold pursuant to a 10b5-1 plan entered into on June 14, 2021.

F4: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $140.66 to $141.65 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.

F5: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $141.66 to $142.65 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.

F6: Shares are held by the Alexis Le-Quoc 2016 GRAT.

F7: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $142.67 to $143.66 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.

F8: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $143.67 to $144.665 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.

F9: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $144.67 to $145.665 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.

F10: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $145.70 to $146.10 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.

F11: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $140.87 to $141.84 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.

F12: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $141.87 to $142.84 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.

F13: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $142.89 to $143.88. 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.

F14: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $143.89 to $144.88. 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.

F15: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $144.89 to $145.85. 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.