Datadog, Inc. — Director's Dealing 2021

Dec 9, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2021-12-06

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-12-06	Class A Common Stock	C	256920	—	Acquired	256920	Indirect
2021-12-06	Class A Common Stock	S	5600	$154.2963	Disposed	251320	Indirect
2021-12-06	Class A Common Stock	S	4150	$155.453	Disposed	247170	Indirect
2021-12-06	Class A Common Stock	S	11335	$156.75	Disposed	235835	Indirect
2021-12-06	Class A Common Stock	S	15709	$157.9414	Disposed	220126	Indirect
2021-12-06	Class A Common Stock	S	38672	$158.8109	Disposed	181454	Indirect
2021-12-06	Class A Common Stock	S	29084	$159.6691	Disposed	152370	Indirect
2021-12-06	Class A Common Stock	S	59422	$160.8621	Disposed	92948	Indirect
2021-12-06	Class A Common Stock	S	62935	$161.5247	Disposed	30013	Indirect
2021-12-06	Class A Common Stock	S	25213	$162.7748	Disposed	4800	Indirect
2021-12-06	Class A Common Stock	S	4800	$163.3514	Disposed	0	Indirect
2021-12-08	Class A Common Stock	C	10930	$0.00	Acquired	10930	Indirect
2021-12-08	Class A Common Stock	G	10930	$0.00	Disposed	0	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-12-06	Class B Common Stock	$	C	256920	Disposed		Class A Common Stock (256920)	Indirect
2021-12-08	Class B Common Stock	$	C	10930	Disposed		Class A Common Stock (10930)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	946	Indirect
Class A Common Stock	173229	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$		Class A Common Stock ()	2554646	Indirect

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 $153.83 to $154.815. 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 $154.86 to $155.80. 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: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $156.21 to $157.15. 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.

F7: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $157.23 to $158.22. 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 $158.23 to $159.22. 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 $159.24 to $160.23. 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 $160.25 to $161.24. 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 $161.25 to $162.24. 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 $162.26 to $163.24. 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 $163.26 to $163.49. 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: Shares are held by the Alexis Le-Quoc 2016 GRAT.