Datadog, Inc. — Director's Dealing 2021

Apr 12, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2021-04-08

Reporting Person: OBSTLER DAVID M (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-04-08	Class A Common Stock	A	59895	$0.00	Acquired	178230	Direct
2021-04-12	Class A Common Stock	S	10000	$90.2559	Disposed	105000	Indirect

Footnotes

F1: Represents the number of shares of Class A Common Stock underlying restricted stock units ("RSUs"). Each RSU represents the contingent right to receive one share of the Issuer's Class A Common Stock. The shares underlying the RSUs vest in 12 equal quarterly installments beginning on June 1, 2022 and on each September 1, December 1 and March 1 thereafter, subject to the Reporting Person remaining in
Continuous Service (as defined in the Issuer's 2019 Equity Incentive Plan) of the Issuer as of each such date.

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 $90.25 to $90.33. 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.

F4: Shares are held directly by the David Obstler 2019 GRAT, of which Reporting Person is Trustee.