Datadog, Inc. — Director's Dealing 2026

Mar 4, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2026-03-02

Reporting Person: Blitzer Adam (Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-03-02	Class A Common Stock	S	33429	$110.5359	Disposed	262412	Direct
2026-03-03	Class A Common Stock	S	3600	$105.9606	Disposed	258812	Direct
2026-03-03	Class A Common Stock	S	4500	$106.7676	Disposed	254312	Direct
2026-03-03	Class A Common Stock	S	1560	$107.671	Disposed	252752	Direct
2026-03-03	Class A Common Stock	S	600	$109.1081	Disposed	252152	Direct
2026-03-03	Class A Common Stock	S	2984	$110.4384	Disposed	249168	Direct
2026-03-03	Class A Common Stock	S	3600	$111.4319	Disposed	245568	Direct
2026-03-03	Class A Common Stock	S	13048	$112.1032	Disposed	232520	Direct
2026-03-03	Class A Common Stock	S	2000	$113.1842	Disposed	230520	Direct
2026-03-03	Class A Common Stock	S	200	$113.8252	Disposed	230320	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: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $110.53 to $111.78. 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.

F3: Shares sold pursuant to a 10b5-1 plan dated August 22, 2025.

F4: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $105.31 to $106.30. 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 $106.33 to $107.24. 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 $107.37 to $108.23. 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 $108.70 to $109.31. 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 $109.74 to $110.73. 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: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $110.76 to $111.75. 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.

F10: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $111.76 to $112.75. 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.

F11: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $112.78 to $113.77. 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 $113.81 to $113.86. 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.