Datadog, Inc. — Director's Dealing 2025

Nov 5, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2025-11-03

Reporting Person: Pomel Olivier (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-11-03	Class A Common Stock	C	21728	—	Acquired	555086	Direct
2025-11-03	Class A Common Stock	C	40954	—	Acquired	596040	Direct
2025-11-03	Class A Common Stock	S	2000	$161.1284	Disposed	594040	Direct
2025-11-03	Class A Common Stock	S	9308	$162.1909	Disposed	584732	Direct
2025-11-03	Class A Common Stock	S	14338	$163.0306	Disposed	570394	Direct
2025-11-03	Class A Common Stock	S	6577	$163.9254	Disposed	563817	Direct
2025-11-03	Class A Common Stock	S	30459	$165.0073	Disposed	533358	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-11-03	Stock Option (Right to Buy)	$0.9092	M	38118	Disposed	2027-10-24	Class B Common Stock (38118)	Direct
2025-11-03	Class B Common Stock	$	M	38118	Acquired		Class A Common Stock (38118)	Direct
2025-11-03	Class B Common Stock	$	C	62682	Disposed		Class A Common Stock (62682)	Direct

Footnotes

F1: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

F2: Shares sold pursuant to a 10b5-1 plan dated September 13, 2024.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $160.5700 to $161.4400. 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 $161.5800 to $162.5700. 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 $162.5800 to $163.5700. 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 $163.6000 to $164.4000. 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 $164.7200 to $165.1500. 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: Option is fully vested and exercisable.