Datadog, Inc. — Director's Dealing 2020

Apr 3, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2020-04-01

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-04-01	Class A Common Stock	C	54800	—	Acquired	54800	Direct
2020-04-01	Class A Common Stock	S	44750	$34.9871	Disposed	10050	Direct
2020-04-01	Class A Common Stock	S	9350	$36.1297	Disposed	700	Direct
2020-04-01	Class A Common Stock	S	700	$36.64	Disposed	0	Direct
2020-04-01	Class A Common Stock	C	18750	—	Acquired	18750	Indirect
2020-04-01	Class A Common Stock	S	13850	$34.9273	Disposed	4900	Indirect
2020-04-01	Class A Common Stock	S	4400	$35.8896	Disposed	500	Indirect
2020-04-01	Class A Common Stock	S	500	$36.484	Disposed	0	Indirect
2020-04-01	Class A Common Stock	C	12500	—	Acquired	12500	Indirect
2020-04-01	Class A Common Stock	S	9169	$34.929	Disposed	3331	Indirect
2020-04-01	Class A Common Stock	S	2931	$35.8792	Disposed	400	Indirect
2020-04-01	Class A Common Stock	S	400	$36.5225	Disposed	0	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-04-01	Class B Common Stock	$	C	54800	Disposed		Class B Common Stock (54800)	Direct
2020-04-01	Class B Common Stock	$	C	18750	Disposed		Class B Common Stock (18750)	Indirect
2020-04-01	Class B Common Stock	$	C	12500	Disposed		Class B Common Stock (12500)	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 December 7, 2019.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $34.49 to $35.47. 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.

F4: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $35.49 to $36.37. 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: Shares are held by the Olivier Pomel 2018 GRAT.

F6: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $34.36 to $35.35. 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 $35.36 to $36.30. 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 $36.45 to $36.59. 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: Shares are held by the Pomel Descendents' 2018 Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

F10: Shares sold pursuant to a 10b5-1 plan entered into on December 6, 2019.

F11: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $34.35 to $35.32. 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 $35.35 to $36.33. 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 $36.40 to $36.70. 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.