Datadog, Inc. — Director's Dealing 2020

Oct 21, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2020-10-19

Reporting Person: OBSTLER DAVID M (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-10-19	Class A Common Stock	C	125750	$0.00	Acquired	508335	Direct
2020-10-19	Class A Common Stock	S	30427	$111.0052	Disposed	477908	Direct
2020-10-19	Class A Common Stock	S	43515	$111.9302	Disposed	434393	Direct
2020-10-19	Class A Common Stock	S	20652	$112.7833	Disposed	413741	Direct
2020-10-19	Class A Common Stock	S	1700	$113.54	Disposed	412041	Direct
2020-10-20	Class A Common Stock	S	31986	$108.5841	Disposed	380055	Direct
2020-10-20	Class A Common Stock	S	46642	$109.4595	Disposed	333413	Direct
2020-10-20	Class A Common Stock	S	33705	$110.27	Disposed	299708	Direct
2020-10-20	Class A Common Stock	S	1974	$111.265	Disposed	297734	Direct
2020-10-20	Class A Common Stock	S	300	$112.0367	Disposed	297434	Direct
2020-10-21	Class A Common Stock	S	5792	$101.1798	Disposed	291642	Direct
2020-10-21	Class A Common Stock	S	16230	$102.4005	Disposed	275412	Direct
2020-10-21	Class A Common Stock	S	29293	$103.3231	Disposed	246119	Direct
2020-10-21	Class A Common Stock	S	2600	$104.0346	Disposed	243519	Direct
2020-10-21	Class A Common Stock	S	3085	$105.375	Disposed	240434	Direct
2020-10-21	Class A Common Stock	S	3364	$106.8895	Disposed	237070	Direct
2020-10-21	Class A Common Stock	S	6091	$107.8619	Disposed	230979	Direct
2020-10-21	Class A Common Stock	S	6244	$108.6626	Disposed	224735	Direct
2020-10-21	Class A Common Stock	S	1400	$109.775	Disposed	223335	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-10-19	Class B Common Stock	$	C	125750	Disposed		Class A Common Stock (125750)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$		Class A Common (618750)	618750	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 11, 2019.

F3: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $110.40 to $111.39. 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 $111.40 to $112.39. 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 $112.40 to $113.37. 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 $113.42 to $113.75. 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.

F7: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $107.95 to $108.94. 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 $108.95 to $109.94. 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 $109.95 to $110.94. 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 $110.95 to $111.62. 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 $112.03 to $112.05. 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 $100.73 to $101.72. 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 $101.84 to $102.83. 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: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $102.84 to $103.83. 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 $103.84 to $104.53. 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.

F16: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $105.04 to $105.96. 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 $106.23 to $107.22. 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 $107.25 to $108.24. 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.

F19: Price reported is a weighted-average sales price. The shares were sold at prices ranging from $108.25 to $109.19. 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 $109.56 to $110.05. 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: Shares are held directly by the David Obstler 2019 GRAT, of which Reporting Person is Trustee.