Datadog, Inc. — Director's Dealing 2025

Nov 13, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2025-11-10

Reporting Person: Jacobson Matthew (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-11-10	Class A Common Stock	S	61608	$198.4338	Disposed	114703	Indirect
2025-11-10	Class A Common Stock	S	90760	$198.4338	Disposed	169045	Indirect
2025-11-10	Class A Common Stock	S	26851	$199.5981	Disposed	87852	Indirect
2025-11-10	Class A Common Stock	S	39435	$199.5981	Disposed	129610	Indirect
2025-11-10	Class A Common Stock	S	74427	$200.5623	Disposed	13425	Indirect
2025-11-10	Class A Common Stock	S	109819	$200.5623	Disposed	19791	Indirect
2025-11-10	Class A Common Stock	S	566	$201.0687	Disposed	12859	Indirect
2025-11-10	Class A Common Stock	S	840	$201.0687	Disposed	18951	Indirect
2025-11-11	Class A Common Stock	S	12859	$200.1396	Disposed	0	Indirect
2025-11-11	Class A Common Stock	S	18951	$200.1396	Disposed	0	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	675558	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $198.00 to $199.00. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F2: ICONIQ Strategic Partners VI GP, L.P. ("ICONIQ VI GP") is the sole general partner of each of ICONIQ Strategic Partners VI, L.P. ("ICONIQ VI") and ICONIQ Strategic Partners VI-B, L.P. ("ICONIQ VI-B"). ICONIQ Strategic Partners VI TT GP, Ltd. ("ICONIQ VI Parent GP") is the sole general partner of ICONIQ VI GP. Divesh Makan, William J.G. Griffith and the Reporting Person are the sole equity holders of ICONIQ VI Parent GP.

F3: The Reporting Person is a General Partner and a Managing Director at ICONIQ Capital. The Reporting Person disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.

F4: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $199.01 to $200.00. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F5: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $200.01 to $201.00. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F6: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $201.02 to $201.14. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F7: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $200.00 to $200.61. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F8: These shares are directly held by the Reporting Person through a trust of which he is a trustee and another estate planning trust having an independent trustee. The Reporting Person disclaims beneficial ownership of the shares held by such trusts for purposes of Section 16 of the Exchange Act, except to the extent of his pecuniary interest therein, if any. This report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose