Datadog, Inc. — Director's Dealing 2021

Aug 21, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2021-08-18

Reporting Person: OBSTLER DAVID M (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-18	Class A Common Stock	C	145000	$0.00	Acquired	322095	Direct
2021-08-18	Class A Common Stock	S	36649	$132.0139	Disposed	285446	Direct
2021-08-18	Class A Common Stock	S	66925	$132.8314	Disposed	218521	Direct
2021-08-18	Class A Common Stock	S	39088	$133.7249	Disposed	179433	Direct
2021-08-18	Class A Common Stock	S	2338	$134.4294	Disposed	177095	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-18	Stock Option (Right to Buy)	$1.55	M	145000	Disposed	2028-09-06	Class B Common Stock (145000)	Direct
2021-08-18	Class B Common Stock	$	M	145000	Acquired		Class A Common Stock (145000)	Direct
2021-08-18	Class B Common Stock	$	C	145000	Disposed		Class A Common Stock (145000)	Direct

Footnotes

F1: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock 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 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 10, 2020.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $131.31 to $132.30. 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.

F4: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $132.31 to $133.30. 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.

F5: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $133.31 to $134.30. 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.

F6: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $134.32 to $134.53. 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: Option vests as to 25% on September 6, 2019 and in equal monthly installments thereafter over three years.