Datadog, Inc. — Director's Dealing 2025

Jun 5, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2025-06-03

Reporting Person: Callahan Michael James (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-06-03	Class A Common Stock	A	2106	—	Acquired	19612	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	12496	Indirect

Footnotes

F1: Represents the number of shares underlying Restricted Stock Units ("RSUs") granted pursuant to the Issuer's non-employee director compensation policy. Each RSU represents a contingent right to receive one share of Issuer's Class A common stock. The RSUs vest on the earlier of (A) the Company's next annual meeting of stockholders and (B) June 3, 2026, in each case, subject to the Reporting Person's continuous service to the Issuer through the vesting date.

F2: The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.