Datadog, Inc. — Director's Dealing 2025

Dec 4, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2025-12-02

Reporting Person: Blitzer Adam (Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-02	Class A Common Stock	S	8508	$158.5985	Disposed	173220	Direct
2025-12-03	Class A Common Stock	S	4410	$153.8495	Disposed	168810	Direct
2025-12-03	Class A Common Stock	S	601	$154.7444	Disposed	168209	Direct
2025-12-03	Class A Common Stock	S	3012	$155.689	Disposed	165197	Direct

Footnotes

F1: The Reporting Person was required by the Issuer to sell only the number of shares of common stock necessary to cover applicable tax withholding obligations realized upon the vesting of restricted stock units and performance-based restricted stock units, as well as any related brokerage commission fees.

F2: Shares sold pursuant to a 10b5-1 plan dated August 14, 2024.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $153.34 to $154.32. 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.

F4: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $153.34 to $155.29. 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 $155.36 to $155.96. 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.