Datadog CFO sells 16,524 shares for tax bill

Datadog’s CFO sold shares solely to cover tax withholding from vesting equity awards and continues to hold a substantial direct position.

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) reported that Chief Financial Officer David M. Obstler sold 16,524 shares of Class A Common Stock on September 2, 2026, in an open-market transaction at a weighted-average price of $212.9041 per share. According to the company, he was required to sell only the number of shares needed to cover tax withholding obligations and related brokerage commissions arising from the vesting of restricted stock units and performance-based restricted stock units. Following this sale, he directly holds 418,067 shares of Class A Common Stock, and no Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Net Seller: 16,524 shares

Net Sell 1 txn

Insider OBSTLER DAVID M

Role Chief Financial Officer

Sold 16,524 shs ($3.52M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2	16,524	$212.9041	$3.52M

Holdings After Transaction: Class A Common Stock — 418,067 shares (Direct)

Footnotes (2)

1. F1. 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. F2. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $210.12 to $213.01. 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.

Key Figures

Shares sold: 16,524 shares Weighted-average sale price: $212.9041 per share Sale price range: $210.12–$213.01 per share +1 more

4 metrics

Shares sold 16,524 shares Class A Common Stock sold by CFO on September 2, 2026

Weighted-average sale price $212.9041 per share Open-market sale to cover tax withholding

Sale price range $210.12–$213.01 per share Range of individual trade prices within the reported sale

Shares held after transaction 418,067 shares Direct Class A Common Stock holdings of CFO after the sale

Key Terms

weighted-average sales price, restricted stock units, performance-based restricted stock units

3 terms

weighted-average sales price financial

"Price reported is a weighted-average sales price."

restricted stock units financial

"tax withholding obligations realized upon the vesting of 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

"vesting of restricted stock units and performance-based restricted stock units"

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.

FAQ

What did Datadog (DDOG) disclose about the CFO’s recent stock sale?

Datadog disclosed that CFO David M. Obstler sold 16,524 shares of Class A Common Stock on September 2, 2026 at a weighted-average price of $212.9041 per share and now directly holds 418,067 shares.

Why did Datadog’s CFO sell 16,524 DDOG shares?

The company states the CFO was required to sell only the number of shares needed to cover tax withholding obligations from vesting restricted stock units and performance-based restricted stock units, plus related brokerage commission fees.

At what prices were the Datadog (DDOG) shares sold by the CFO?

The transaction is reported at a weighted-average price of $212.9041 per share. The filing states the shares were sold at individual prices ranging from $210.12 to $213.01.

How many Datadog (DDOG) shares does the CFO hold after this Form 4 transaction?

After the reported sale, Datadog’s CFO directly holds 418,067 shares of Datadog Class A Common Stock, according to the ownership figure reported following the transaction.

Was Datadog’s CFO stock sale under a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is not marked, and no footnote describes the sale as made under a Rule 10b5-1 or other pre-arranged trading plan.

What type of equity awards caused the Datadog (DDOG) tax-withholding sale?

The sale was tied to tax withholding obligations realized upon vesting of restricted stock units and performance-based restricted stock units, as stated in the footnote.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/04/2026 - 04:38 PM Accepted by SEC EDGAR 09/04/2026 - 04:37 PM Learn about SEC filing dates

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^*

OBSTLER DAVID M

(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 Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/02/2026

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	09/02/2026		S(1)		16,524	D	$212.9041(2)	418,067	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 $210.12 to $213.01. 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	09/04/2026
	** 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)