Datadog (DDOG) Chief People Officer sells 4,711 shares to cover tax withholding

Rhea-AI Filing Summary

Datadog, Inc. Chief People Officer David Galloreese sold 4,711 shares of Class A common stock on June 2, 2026 at a weighted-average price of $267.1544 per share. According to the filing, the issuer required this sale solely to cover tax withholding obligations arising from the vesting of restricted stock units and performance-based restricted stock units, including related brokerage commission fees. After the transaction, Galloreese directly holds 126,204 shares, indicating he retained the large majority of his position.

Insider Trade Summary

Net Seller: 4,711 shares ($1,258,564)

Net Sell 1 txn

Insider Galloreese David

Role Chief People Officer

Sold 4,711 shs ($1.26M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	4,711	$267.1544	$1.26M

Holdings After Transaction: Class A Common Stock — 126,204 shares (Direct, null)

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 $267.15 to $268.36. 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. Includes 29 shares acquired on May 15, 2026 under the Issuers Employee Stock Purchase Plan.

Key Figures

Shares sold: 4,711 shares Weighted-average sale price: $267.1544 per share Post-transaction holdings: 126,204 shares +2 more

5 metrics

Shares sold 4,711 shares Class A Common Stock sold on June 2, 2026

Weighted-average sale price $267.1544 per share Open-market sale to cover tax withholding

Post-transaction holdings 126,204 shares Direct ownership after June 2, 2026 sale

Sale price range $267.15–$268.36 per share Price range for executed trades in the transaction

ESPP acquisition 29 shares Acquired on May 15, 2026 under Employee Stock Purchase Plan

Key Terms

restricted stock units, performance-based restricted stock units, weighted-average sales price, Employee Stock Purchase Plan, +1 more

5 terms

restricted stock units financial

"tax withholding obligations realized upon the vesting of restricted stock units and performance-based restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

performance-based restricted stock units financial

"upon the vesting of restricted stock units and performance-based restricted stock units, as well as any related brokerage commission fees"

Performance-based restricted stock units are a type of employee equity award that converts into company shares only if predefined financial or operational targets are met over a set period. Think of it like a bonus check that becomes stock only when specific goals are hit; it ties pay to results, aligning managers’ incentives with shareholders. Investors care because these awards affect future share count, executive incentives, and signal how management’s success will be measured and rewarded.

weighted-average sales price financial

"Price reported is a weighted-average sales price. The shares were sold at prices ranging"

Employee Stock Purchase Plan financial

"Includes 29 shares acquired on May 15, 2026 under the Issuers Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

open-market sale financial

"transaction_action": "open-market sale", "transaction_code_description": "Sale in open market or private transaction""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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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 NEW YORK 10018

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/02/2026

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

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

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

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	06/02/2026		S(1)		4,711	D	$267.1544(2)	126,204(3)	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 $267.15 to $268.36. 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.

3. Includes 29 shares acquired on May 15, 2026 under the Issuers Employee Stock Purchase Plan.

Remarks:

	/s/ Kerry Acocella, Attorney-in-Fact	06/04/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Datadog (DDOG) Chief People Officer David Galloreese report in this Form 4?

David Galloreese reported selling 4,711 shares of Datadog Class A common stock. The transaction occurred on June 2, 2026 and was conducted at a weighted-average price of $267.1544 per share, as disclosed in the Form 4 filing.

Why did Datadog (DDOG) executive David Galloreese sell 4,711 shares?

The shares were sold to cover tax withholding obligations tied to vesting equity awards. The filing states the issuer required Galloreese to sell only the number of shares needed for tax withholding and related brokerage commission fees on vested RSUs and performance-based RSUs.

What price did David Galloreese receive for his Datadog (DDOG) share sale?

The reported weighted-average sales price was $267.1544 per share. The footnotes explain that individual sales prices ranged from $267.15 to $268.36, and that detailed trade information is available upon request to regulators, the issuer, or its security holders.

How many Datadog (DDOG) shares does David Galloreese hold after this transaction?

Following the sale, Galloreese holds 126,204 shares of Datadog Class A common stock directly. This post-transaction holding shows that the 4,711 shares sold for tax withholding represent a relatively small portion of his overall equity position in the company.

Was the Datadog (DDOG) share sale by David Galloreese a discretionary transaction?

The filing indicates the sale was not discretionary. It specifies that the issuer required Galloreese to sell only the number of shares necessary to cover applicable tax withholding obligations and related brokerage fees arising from the vesting of restricted and performance-based stock units.

Did David Galloreese acquire any Datadog (DDOG) shares around this period?

Yes. A footnote states that his holdings include 29 shares acquired on May 15, 2026. These shares were obtained under the issuer’s Employee Stock Purchase Plan and are included within his reported post-transaction balance of 126,204 shares.