Datadog, Inc. — Director's Dealing 2019

Sep 18, 2019

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2019-09-18

Reporting Person: Callahan Michael James (Director)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	707410	Direct
Common Stock	100000	Indirect
Common Stock	100000	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Series Seed Preferred Stock	$		Common Stock (200196)		Direct
Stock Option (Right to Buy)	$0.9092	2027-10-27	Common Stock (7932)		Direct

Footnotes

F1: Each share of Common Stock shall be reclassified into one share of Class B Common Stock immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock.

F2: Shares are held directly by The Michael Callahan Grantor Retained Annuity Trust, of which Reporting Person is Trustee.

F3: Shares are held directly by The Melanie Thernstrom Grantor Retained Annuity Trust, of which Reporting Person's spouse is Trustee.

F4: The Series Seed Preferred Stock will automatically convert into shares of Common Stock on a 1:1 basis immediately prior to the closing of the Issuer's initial public offering and have no expiration date.

F5: Option vests in 48 equal monthly installments from November 7, 2015.