Datadog, Inc. — Director's Dealing 2025

Aug 28, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Datadog, Inc. (DDOG)
CIK: 0001561550
Period of Report: 2025-08-26

Reporting Person: Jacobson Matthew (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-08-26	Class A Common Stock	S	178066	$126.6125	Disposed	274574	Indirect
2025-08-26	Class A Common Stock	S	262464	$126.6125	Disposed	404523	Indirect
2025-08-26	Class A Common Stock	S	29770	$127.6069	Disposed	244804	Indirect
2025-08-26	Class A Common Stock	S	43820	$127.6069	Disposed	360703	Indirect
2025-08-26	Class A Common Stock	S	24973	$128.6636	Disposed	219831	Indirect
2025-08-26	Class A Common Stock	S	36770	$128.6636	Disposed	323933	Indirect
2025-08-27	Class A Common Stock	S	9189	$128.644	Disposed	210642	Indirect
2025-08-27	Class A Common Stock	S	13514	$128.644	Disposed	310419	Indirect
2025-08-27	Class A Common Stock	S	12992	$129.5259	Disposed	197650	Indirect
2025-08-27	Class A Common Stock	S	19093	$129.5259	Disposed	291326	Indirect
2025-08-27	Class A Common Stock	S	10916	$130.6359	Disposed	186734	Indirect
2025-08-27	Class A Common Stock	S	16098	$130.6359	Disposed	275228	Indirect
2025-08-27	Class A Common Stock	S	10423	$131.1724	Disposed	176311	Indirect
2025-08-27	Class A Common Stock	S	15423	$131.1724	Disposed	259805	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 $126.26 to $127.26. 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 $127.27 to $128.26. 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 $128.27 to $129.02. 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 $128.07 to $129.07. 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 $129.08 to $130.07. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F8: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $130.08 to $131.07. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F9: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $131.08 to $131.69. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request.

F10: 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