Datadog, Inc. — Director's Dealing 2024

Mar 13, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2024-03-11

Reporting Person: OBSTLER DAVID M (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-03-11	Class A Common Stock	C	70000	$1.55	Acquired	345191	Direct
2024-03-11	Class A Common Stock	S	7468	$119.1189	Disposed	337723	Direct
2024-03-11	Class A Common Stock	S	31834	$120.3369	Disposed	305889	Direct
2024-03-11	Class A Common Stock	S	17896	$121.281	Disposed	287993	Direct
2024-03-11	Class A Common Stock	S	12802	$121.8728	Disposed	275191	Direct
2024-03-11	Class A Common Stock	C	70000	—	Acquired	70000	Indirect
2024-03-11	Class A Common Stock	S	7143	$119.0594	Disposed	62857	Indirect
2024-03-11	Class A Common Stock	S	29222	$120.298	Disposed	33635	Indirect
2024-03-11	Class A Common Stock	S	17970	$121.1214	Disposed	15665	Indirect
2024-03-11	Class A Common Stock	S	15665	$121.8181	Disposed	0	Indirect
2024-03-13	Class A Common Stock	C	11268	$1.55	Acquired	286459	Direct
2024-03-13	Class A Common Stock	S	11268	$125.2827	Disposed	275191	Direct
2024-03-13	Class A Common Stock	C	11167	—	Acquired	11167	Indirect
2024-03-13	Class A Common Stock	S	11167	$125.2831	Disposed	0	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-03-11	Stock Option (Right to Buy)	$1.55	M	70000	Disposed	2028-09-06	Class B Common Stock (70000)	Direct
2024-03-11	Class B Common Stock	$	M	70000	Acquired		Class A Common Stock (70000)	Direct
2024-03-11	Class B Common Stock	$	C	70000	Disposed		Class A Common Stock (70000)	Direct
2024-03-11	Class B Common Stock	$	C	70000	Disposed		Class A Common Stock (70000)	Indirect
2024-03-13	Stock Option (Right to Buy)	$1.55	M	11268	Disposed	2028-09-06	Class B Common Stock (11628)	Direct
2024-03-13	Class B Common Stock	$	M	11268	Acquired		Class A Common Stock (11268)	Direct
2024-03-13	Class B Common Stock	$	C	11268	Disposed		Class A Common Stock (11268)	Direct
2024-03-13	Class B Common Stock	$	C	11167	Disposed		Class A Common Stock (11167)	Indirect

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 entered into on December 10, 2023.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $118.61 to $119.60. 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 $119.61 to $120.60. 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 $120.61 to $121.60. 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 $121.61 to $122.33. 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: Shares are held directly by the Obstler Children 2019 Trust, of which the Reporting Person's spouse is Trustee.

F8: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $118.54 to $119.53. 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 $119.54 to $120.53. 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 $120.54 to $121.53. 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 $121.54 to $122.30. 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.

F12: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $125.25 to $125.38. 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.

F13: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $125.25 to $125.40. 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.

F14: Option is fully vested and exercisable.