Datadog, Inc. — Director's Dealing 2021

Aug 19, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2021-08-16

Reporting Person: Pomel Olivier (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-16	Class A Common Stock	C	109104	$0.00	Acquired	354993	Direct
2021-08-16	Class A Common Stock	S	1200	$129.96	Disposed	353793	Direct
2021-08-16	Class A Common Stock	S	5600	$131.1152	Disposed	348193	Direct
2021-08-16	Class A Common Stock	S	8500	$131.9891	Disposed	339693	Direct
2021-08-16	Class A Common Stock	S	45553	$133.1977	Disposed	294140	Direct
2021-08-16	Class A Common Stock	S	37981	$133.8103	Disposed	256159	Direct
2021-08-16	Class A Common Stock	S	8771	$134.9229	Disposed	247388	Direct
2021-08-16	Class A Common Stock	S	1499	$135.7305	Disposed	245889	Direct
2021-08-16	Class A Common Stock	C	45562	$0.00	Acquired	45972	Indirect
2021-08-16	Class A Common Stock	S	700	$129.9314	Disposed	45272	Indirect
2021-08-16	Class A Common Stock	S	3900	$131.3915	Disposed	41372	Indirect
2021-08-16	Class A Common Stock	S	4855	$132.4923	Disposed	36517	Indirect
2021-08-16	Class A Common Stock	S	26492	$133.4108	Disposed	10025	Indirect
2021-08-16	Class A Common Stock	S	7232	$134.2545	Disposed	2793	Indirect
2021-08-16	Class A Common Stock	S	2283	$135.3007	Disposed	510	Indirect
2021-08-16	Class A Common Stock	S	100	$136.16	Disposed	410	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-16	Class B Common Stock	$	C	109104	Disposed		Class A Common Stock (109104)	Direct
2021-08-16	Class B Common Stock	$	C	45562	Disposed		Class A Common Stock (45562)	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 sold pursuant to a 10b5-1 plan entered into on June 14, 2021.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $129.50 to $130.46. 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.

F4: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $130.50 to $131.48. 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 $131.51 to $132.50. 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 $132.51 to $133.50. 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 $133.51 to $134.49. 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.

F8: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $134.53 to $135.51. 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 $135.54 to $136.16. 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: Shares are held by the Olivier Pomel 2018 GRAT.

F11: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $129.51 to $130.44. 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 $130.85 to $131.81. 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 $131.85 to $132.84. 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.

F14: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $132.87 to $133.86. 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 $133.87 to $134.84. 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.

F16: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $134.94 to $135.81. 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.