Datadog, Inc. — Director's Dealing 2021

Aug 13, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2021-08-11

Reporting Person: Agarwal Amit (Chief Product Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-11	Common A Common Stock	C	5000	$0.00	Acquired	178297	Direct
2021-08-11	Common A Common Stock	S	100	$122.50	Disposed	178197	Direct
2021-08-11	Common A Common Stock	S	770	$124.3939	Disposed	177427	Direct
2021-08-11	Common A Common Stock	S	700	$124.8314	Disposed	176727	Direct
2021-08-11	Common A Common Stock	S	300	$126.1133	Disposed	176427	Direct
2021-08-11	Common A Common Stock	S	2300	$127.8278	Disposed	174127	Direct
2021-08-11	Common A Common Stock	S	830	$128.3112	Disposed	173297	Direct
2021-08-11	Common A Common Stock	C	2000	$0.00	Acquired	2000	Indirect
2021-08-11	Common A Common Stock	S	200	$122.87	Disposed	1800	Indirect
2021-08-11	Common A Common Stock	S	600	$124.8867	Disposed	1200	Indirect
2021-08-11	Common A Common Stock	S	900	$127.8011	Disposed	300	Indirect
2021-08-11	Common A Common Stock	S	300	$128.3133	Disposed	0	Indirect
2021-08-11	Common A Common Stock	C	10000	$0.00	Acquired	10000	Indirect
2021-08-11	Common A Common Stock	S	800	$123.7087	Disposed	9200	Indirect
2021-08-11	Common A Common Stock	S	2800	$124.7001	Disposed	6400	Indirect
2021-08-11	Common A Common Stock	S	600	$126.095	Disposed	5800	Indirect
2021-08-11	Common A Common Stock	S	2600	$127.5454	Disposed	3200	Indirect
2021-08-11	Common A Common Stock	S	3200	$128.1318	Disposed	0	Indirect
2021-08-13	Common A Common Stock	C	54558	$0.00	Acquired	227855	Direct
2021-08-13	Common A Common Stock	S	50152	$135.3671	Disposed	177703	Direct
2021-08-13	Common A Common Stock	S	4406	$136.1537	Disposed	173297	Direct
2021-08-13	Common A Common Stock	C	11680	$0.00	Acquired	11680	Indirect
2021-08-13	Common A Common Stock	S	11680	$135.118	Disposed	0	Indirect
2021-08-13	Common A Common Stock	C	46146	$0.00	Acquired	46146	Indirect
2021-08-13	Common A Common Stock	S	46146	$135.2283	Disposed	0	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-11	Class B Common Stock	$	C	5000	Disposed		Class A Common Stock (5000)	Direct
2021-08-11	Class B Common Stock	$	C	2000	Disposed		Class A Common Stock (2000)	Indirect
2021-08-11	Class B Common Stock	$	C	10000	Disposed		Class A Common Stock (10000)	Indirect
2021-08-13	Class B Common Stock	$	C	54558	Disposed		Class A Common Stock (54558)	Direct
2021-08-13	Class B Common Stock	$	C	11680	Disposed		Class A Common Stock (11680)	Indirect
2021-08-13	Class B Common Stock	$	C	46146	Disposed		Class A Common Stock (46146)	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$		Class A Common Stock ()	1148365	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 September 2, 2020.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $123.69 to $124.65. 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 $124.71 to $125.14. 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 $125.92 to $126.41. 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 $127.18 to $128.16. 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 $128.20 to $128.44. 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: Shares are held by Reporting Person's spouse.

F9: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $122.74 to $123.00. 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 $124.62 to $125.36. 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 $127.24 to $128.04. 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 $128.27 to $128.35. 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: Shares are held directly by Amit Agarwal 2019 GRAT, of which the Reporting Person is Trustee.

F14: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $123.29 to $124.07. 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.

F15: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $124.31 to $125.24. 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.

F16: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $125.75 to $126.57. 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.

F17: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $126.83 to $127.82. 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.

F18: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $127.83 to $128.56. 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.

F19: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $135.10 to $136.092. 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.

F20: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $136.10 to $136.26. 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.

F21: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $135.10 to $135.30. 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.

F22: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $135.10 to $135.705. 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.

F23: Shares are held directly by Amit Agarwal 2018 GRAT, of which the Reporting Person is Trustee.