Datadog (NASDAQ: DDOG) CRO sells 22,330 shares under 10b5-1 plan

Rhea-AI Filing Summary

Datadog, Inc. Chief Revenue Officer Sean Michael Walters reported open-market sales of Class A common stock. On March 11, 2026, he sold a total of 22,330 shares in multiple transactions at weighted-average prices between $124.35 and $127.58, under a pre-arranged Rule 10b5-1 trading plan dated December 10, 2024. Following these sales, he continued to hold 238,384 shares directly and 8 shares indirectly through his son.

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

X

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^*

Walters Sean Michael

(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 Revenue Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/11/2026

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	03/11/2026		S(1)		10,971	D	$124.9839(2)	249,743	D
Class A Common Stock	03/11/2026		S(1)		7,005	D	$125.9825(3)	242,738	D
Class A Common Stock	03/11/2026		S(1)		3,769	D	$126.869(4)	238,969	D
Class A Common Stock	03/11/2026		S(1)		585	D	$127.5285(5)	238,384	D
Class A Common Stock								8	I	By Son

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. Shares sold pursuant to a 10b5-1 plan dated December 10, 2024.

2. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $124.35 to $125.28. 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. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $125.49 to $126.48. 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.

4. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $126.49 to $127.42. 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.

5. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $127.49 to $127.58. 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	03/13/2026
	** 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 Sean Michael Walters?

Datadog reported that Chief Revenue Officer Sean Michael Walters sold 22,330 shares of Class A common stock. The trades occurred on March 11, 2026, as multiple open-market sales disclosed in a Form 4 insider filing with the SEC.

At what prices did Datadog (DDOG) CRO Sean Walters sell his shares?

Sean Walters’ sales were executed at weighted-average prices between $124.35 and $127.58 per share. The filing notes he will provide detailed share counts at each individual price level to the SEC, the company, or any security holder upon request.

Was the Datadog (DDOG) insider sale by Sean Walters under a 10b5-1 plan?

Yes. The filing states the shares were sold pursuant to a Rule 10b5-1 trading plan dated December 10, 2024. Such plans are pre-arranged trading programs designed to allow insiders to sell shares on a scheduled basis.

How many Datadog (DDOG) shares does Sean Walters hold after the reported sales?

After the March 11, 2026 transactions, Sean Walters holds 238,384 Datadog Class A shares directly. The Form 4 also shows an additional 8 shares held indirectly through his son, reflecting a small indirect ownership position.

How many Datadog (DDOG) shares did Sean Walters sell in total on March 11, 2026?

He sold a total of 22,330 Class A common shares on March 11, 2026. The trades were split across several transactions, each reported with a separate weighted-average sale price in the Form 4 insider filing.

What role does Sean Michael Walters hold at Datadog (DDOG) in this Form 4?

In the Form 4, Sean Michael Walters is identified as Datadog’s Chief Revenue Officer. As an executive officer, his open-market stock transactions must be reported to the SEC to provide transparency into insider trading activity.