Datadog (DDOG) HR chief sells 10,708 shares to cover tax withholding

Rhea-AI Filing Summary

Datadog, Inc. Chief People Officer David Galloreese reported an open-market sale of 10,708 shares of Class A common stock. The shares were sold on March 2, 2026 at a weighted-average price of $110.5358 per share, in a range from $110.53 to $111.78. According to the disclosure, Datadog required this sale solely to cover tax withholding obligations and related brokerage fees triggered by the vesting of restricted stock units and performance-based restricted stock units. After this transaction, Galloreese directly held 105,532 shares of Datadog Class A common stock.

Insider Trade Summary

Net Seller: 10,708 shares ($1,183,617)

Net Sell 1 txn

Insider Galloreese David

Role Chief People Officer

Sold 10,708 shs ($1.18M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	10,708	$110.5358	$1.18M

Holdings After Transaction: Class A Common Stock — 105,532 shares (Direct)

Footnotes (1)

1. The Reporting Person was required by the Issuer to sell only the number of shares of common stock necessary to cover applicable tax withholding obligations realized upon the vesting of restricted stock units and performance-based restricted stock units, as well as any related brokerage commission fees. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $110.53 to $111.78. 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.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Galloreese David

(Last) (First) (Middle)

C/O DATADOG, INC.

620 8TH AVENUE, 45TH FLOOR

(Street)

NEW YORK NY 10018

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Datadog, Inc. [ DDOG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief People Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	03/02/2026		S(1)		10,708	D	$110.5358(2)	105,532	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The Reporting Person was required by the Issuer to sell only the number of shares of common stock necessary to cover applicable tax withholding obligations realized upon the vesting of restricted stock units and performance-based restricted stock units, as well as any related brokerage commission fees.

2. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $110.53 to $111.78. 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.

Remarks:

	/s/ Kerry Acocella, Attorney-in-Fact	03/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Datadog (DDOG) report for David Galloreese?

Datadog reported that Chief People Officer David Galloreese sold 10,708 shares of Class A common stock. The transaction was an open-market sale executed on March 2, 2026, and was required to cover tax withholding obligations from vesting equity awards and related brokerage fees.

At what price did David Galloreese sell Datadog (DDOG) shares?

The reported weighted-average sale price was $110.5358 per Datadog share. Footnotes state the actual trades occurred in a range between $110.53 and $111.78, with full breakdowns of shares sold at each separate price available upon request to the SEC, Datadog, or shareholders.

Why did Datadog’s Chief People Officer sell 10,708 DDOG shares?

The sale was required by Datadog to cover applicable tax withholding obligations. These obligations arose from the vesting of restricted stock units and performance-based restricted stock units, as well as related brokerage commissions, rather than representing a discretionary liquidation of investment holdings.

How many Datadog (DDOG) shares does David Galloreese hold after the sale?

Following the March 2, 2026 transaction, David Galloreese directly held 105,532 shares of Datadog Class A common stock. This post-transaction holding reflects his remaining direct ownership after selling 10,708 shares to satisfy tax withholding and associated brokerage commission requirements.

What type of transaction was reported in this Datadog (DDOG) Form 4?

The filing reports a non-derivative, open-market sale of Class A common stock coded as “S.” It involved 10,708 shares sold to meet tax withholding obligations from vesting equity awards, consistent with an administrative sale rather than a strategic portfolio reallocation.