Datadog, Inc. — Director's Dealing 2021

Feb 3, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2021-02-01

Reporting Person: Le-Quoc Alexis (Director, President & CTO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-01	Class A Common Stock	C	239487	—	Acquired	239487	Indirect
2021-02-01	Class A Common Stock	S	47517	$101.4469	Disposed	191970	Indirect
2021-02-01	Class A Common Stock	S	152203	$102.0852	Disposed	39767	Indirect
2021-02-01	Class A Common Stock	S	29052	$103.1161	Disposed	10715	Indirect
2021-02-01	Class A Common Stock	S	10315	$104.019	Disposed	400	Indirect
2021-02-01	Class A Common Stock	S	400	$104.965	Disposed	0	Indirect
2021-02-01	Class A Common Stock	C	52400	—	Acquired	52400	Indirect
2021-02-01	Class A Common Stock	S	14944	$101.512	Disposed	37456	Indirect
2021-02-01	Class A Common Stock	S	32001	$102.0792	Disposed	5455	Indirect
2021-02-01	Class A Common Stock	S	4155	$103.12	Disposed	1300	Indirect
2021-02-01	Class A Common Stock	S	1300	$104.0277	Disposed	0	Indirect
2021-02-01	Class A Common Stock	C	50000	—	Acquired	50000	Indirect
2021-02-01	Class A Common Stock	S	14656	$101.5101	Disposed	35344	Indirect
2021-02-01	Class A Common Stock	S	30070	$102.0819	Disposed	5274	Indirect
2021-02-01	Class A Common Stock	S	3980	$103.1293	Disposed	1294	Indirect
2021-02-01	Class A Common Stock	S	1194	$103.9946	Disposed	100	Indirect
2021-02-01	Class A Common Stock	S	100	$104.97	Disposed	0	Indirect
2021-02-01	Class A Common Stock	C	50000	—	Acquired	50000	Indirect
2021-02-01	Class A Common Stock	S	15839	$101.5274	Disposed	34161	Indirect
2021-02-01	Class A Common Stock	S	29128	$102.095	Disposed	5033	Indirect
2021-02-01	Class A Common Stock	S	3724	$103.1465	Disposed	1309	Indirect
2021-02-01	Class A Common Stock	S	1309	$104.0127	Disposed	0	Indirect
2021-02-02	Class A Common Stock	C	77513	—	Acquired	77513	Indirect
2021-02-02	Class A Common Stock	S	5891	$103.3154	Disposed	71622	Indirect
2021-02-02	Class A Common Stock	S	11788	$104.0634	Disposed	59834	Indirect
2021-02-02	Class A Common Stock	S	12138	$105.2145	Disposed	47696	Indirect
2021-02-02	Class A Common Stock	S	45896	$106.1901	Disposed	1800	Indirect
2021-02-02	Class A Common Stock	S	1800	$106.8817	Disposed	0	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-01	Class B Common Stock	$	C	239487	Disposed		Class A Common Stock (239487)	Indirect
2021-02-01	Class B Common Stock	$	C	52400	Disposed		Class A Common Stock (52400)	Indirect
2021-02-01	Class B Common Stock	$	C	50000	Disposed		Class A Common Stock (50000)	Indirect
2021-02-01	Class B Common Stock	$	C	50000	Disposed		Class A Common Stock (50000)	Indirect
2021-02-02	Class B Common Stock	$	C	77513	Disposed		Class A Common Stock (77513)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	105910	Direct

Footnotes

F1: Each share of Class B Common Stock is convertible into an equal number of shares of Class A Common Stock at any time, at the holder's election, 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 nine-month anniversary of 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 are held by the Alexis Le-Quoc Revocable Trust.

F3: Shares sold pursuant to a 10b5-1 plan entered into on September 14, 2020.

F4: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $100.72 to $101.71. 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 $101.72 to $102.71. 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 $102.72 to $103.69. 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 $103.72 to $104.43. 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: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $104.74 to $105.04. 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.

F9: Shares are held by the Alexis Le-Quoc 2016 GRAT.

F10: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $100.76 to $101.75. 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 $101.76 to $102.75. 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 $102.76 to $103.69. 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 $103.83 to $104.38. 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.

F14: Shares are held by Offbeat Polymath Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

F15: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $100.77 to $101.76. 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 $101.77 to $102.765. 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 $102.77 to $103.69. 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 $103.78 to $104.25. 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: Shares are held by Endearing Viceroy Trust. Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest, if any, in the shares.

F20: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $100.77 to $101.76. 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 $101.77 to $102.76. 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 $102.77 to $103.69. 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: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $103.78 to $104.38. 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.

F24: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $102.70 to $103.69. 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.

F25: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $103.70 to $104.69. 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.

F26: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $104.78 to $105.77. 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.

F27: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $105.79 to $106.78. 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.

F28: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $106.79 to $107.12. 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.