DDOG Form 144: Reporting Proposed Insider Sales

DDOG proposed sales by a reporting person under Form 144.

Rhea-AI Filing Summary

DDOG proposed sales by a reporting person under Form 144. The filing lists proposed sales of 22,330 shares of Class A Common on 03/11/2026 with an associated dollar figure of $2,806,479.06, and 32,118 shares on 03/02/2026 with an associated dollar figure of $3,550,192.04. The record also notes RSU/PSU activity dated 03/01/2026 described as Issuer origin.

Key Figures

Proposed sale: 22,330 shares Associated dollar figure: $2,806,479.06 Proposed sale: 32,118 shares +2 more

5 metrics

Proposed sale 22,330 shares Proposed sale date 03/11/2026

Associated dollar figure $2,806,479.06 Line item tied to 22,330 shares on 03/11/2026

Proposed sale 32,118 shares Proposed sale date 03/02/2026

Associated dollar figure $3,550,192.04 Line item tied to 32,118 shares on 03/02/2026

RSU/PSU entry RSU/PSU Grant/award dated 03/01/2026 listed as Issuer origin

Key Terms

Form 144, 10b5-1, RSU/PSU

3 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

10b5-1 regulatory

"10b5-1 Sales for SEAN WALTERS"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

RSU/PSU financial

"Common | 03/01/2026 | RSU/PSU | Issuer"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What sales does the DDOG Form 144 show?

The filing shows proposed sales of 22,330 shares on 03/11/2026 and 32,118 shares on 03/02/2026. Each sale line includes an associated dollar amount in the record.

Who is the reporting person named in the DDOG Form 144?

The filing identifies Sean Walters as the reporting person with an address listed in New York. The entries list his proposed 10b5-1 sales and related share counts and dollar figures.

Does the DDOG Form 144 show how the securities were acquired?

Yes. The record references RSU/PSU dated 03/01/2026 with the issuer listed as the source, indicating some holdings originated from equity awards granted by the company.

Do the amounts listed on DDOG Form 144 equal cash proceeds received?

The filing lists dollar figures alongside each share line ($2,806,479.06 and $3,550,192.04). The document records those amounts but does not state whether they are gross proceeds, net proceeds, or estimates.

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

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Accepted by SEC EDGAR 05/05/2026 - 04:31 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001903980
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	DATADOG, INC.
SEC File Number	001-39051
Address of Issuer	620 8th Avenue, 45th Floor New York NEW YORK 10018
Phone	8663294466
Name of Person for Whose Account the Securities are To Be Sold	SEAN MICHAEL WALTERS
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1914	280764.66	328274648	05/05/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/01/2026	RSU/PSU	Issuer			1914	03/01/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for SEAN WALTERS 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	03/11/2026	22330	2806479.06
SEAN WALTERS 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	03/02/2026	32118	3550192.04

144: Remarks and Signature

Remarks	Securities to be sold, acquired through RSU/PSU or upon option exercise, were registered on Form S-8.
Date of Notice	05/05/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/12/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Sean Michael Walters
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)