Michael James Callahan - 03 Jun 2025 Form 4 Insider Report for Datadog, Inc. (DDOG)

Role: Director
Signature: /s/ Kerry Acocella, Attorney-in-Fact
Issuer symbol: DDOG
Transactions as of: 03 Jun 2025
Transactions value $: $0
Form type: 4
Filing time: 05 Jun 2025, 17:00:26 UTC
Previous filing: 07 Jun 2024
Next filing: 08 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Callahan Michael James	Director	C/O DATADOG, INC., 620 8TH AVENUE, 45TH FLOOR, NEW YORK	/s/ Kerry Acocella, Attorney-in-Fact	05 Jun 2025	0001784030

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DDOG	Class A Common Stock	Award	$0	+2.11K	+12.03%	$0.00	19.6K	03 Jun 2025	Direct	F1
holding	DDOG	Class A Common Stock						12.5K	03 Jun 2025	By Trust	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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.

Content

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.

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