Datadog, Inc. — Director's Dealing 2025

Dec 9, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2025-12-05

Reporting Person: Acocella Kerry (General Counsel and Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-05	Class A Common Stock	S	2238	$150.8607	Disposed	86163	Direct
2025-12-05	Class A Common Stock	S	1500	$151.9109	Disposed	84663	Direct
2025-12-05	Class A Common Stock	S	200	$152.71	Disposed	84463	Direct

Footnotes

F1: Shares sold pursuant to a 10b5-1 plan modified pursuant to Rule 10b5-1(c)(1)(iv) on May 30, 2025.

F2: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $150.48 to $151.42. 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.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $151.49 to $152.45. 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 $152.64 to $152.78. 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.