Datadog (DDOG) CFO sells shares to cover tax obligations

Rhea-AI Filing Summary

Datadog, Inc. Chief Financial Officer David M. Obstler reported an open-market sale of Class A common stock. He sold 40,057 shares on March 2, 2026 at a weighted-average price of $110.5359 per share, with trade prices ranging from $110.53 to $111.78. According to the disclosure, the issuer required this sale solely to cover tax withholding obligations and related brokerage commissions arising from the vesting of restricted stock units and performance-based restricted stock units. After this transaction, Obstler continued to hold 466,619 shares of Datadog common stock directly.

Insider Trade Summary

Net Seller: 40,057 shares ($4,427,737)

Net Sell 1 txn

Insider OBSTLER DAVID M

Role Chief Financial Officer

Sold 40,057 shs ($4.43M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	40,057	$110.5359	$4.43M

Holdings After Transaction: Class A Common Stock — 466,619 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^*

OBSTLER DAVID M

(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 Financial 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)		40,057	D	$110.5359(2)	466,619	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 its CFO?

Datadog reported that CFO David M. Obstler sold 40,057 Class A common shares on March 2, 2026. The sale was an open-market transaction required to cover tax withholding and related commissions from vested restricted and performance-based stock units.

At what price did Datadog CFO David Obstler sell DDOG shares?

The weighted-average sale price was $110.5359 per share for 40,057 Datadog Class A shares. The filing notes the individual trades occurred in a price range between $110.53 and $111.78, and detailed breakdowns are available upon request.

Why did Datadog CFO sell 40,057 DDOG shares on March 2, 2026?

The sale was required by Datadog to cover applicable tax withholding obligations and brokerage commissions. These obligations arose when restricted stock units and performance-based restricted stock units vested, prompting an automatic sale of only the necessary number of shares.

How many Datadog shares does the CFO hold after this Form 4 sale?

Following the March 2, 2026 transaction, CFO David M. Obstler directly owned 466,619 shares of Datadog Class A common stock. This figure reflects his remaining holdings after selling 40,057 shares to satisfy tax withholding and related brokerage fee obligations.

Was the Datadog CFO’s March 2026 share sale discretionary or for taxes?

The transaction was not a discretionary liquidation but a tax-related sale. The company required the CFO to sell only the number of shares needed to cover tax withholding from vested equity awards and any associated brokerage commission fees.