Sean Walters to sell 22,330 DDOG shares via Morgan Stanley (NASDAQ: DDOG)

Rhea-AI Filing Summary

Sean Walters filed a Form 144 proposing the sale of 22,330 shares of Class A Common stock. The notice lists the securities as RSU/PSU issued by the company and identifies Morgan Stanley Smith Barney LLC as the broker. The filing also discloses a prior sale of 32,118 shares on 03/02/2026 for $3,550,192.04.

Insights

Insider Transactions Analyst

Form 144 filed for a proposed insider sale of 22,330 Class A shares.

The filing lists the shares as RSU/PSU and shows Morgan Stanley Smith Barney LLC as the executing broker. The prior reported sale on 03/02/2026 totaled 32,118 shares for $3,550,192.04, indicating recent disposition activity by the holder.

Timing and method for the proposed sale are those reported on the notice; cashflow treatment for the new sale is not detailed in the excerpt. Subsequent filings or broker reports would confirm execution details.

FAQ

What did the DDOG Form 144 filed by Sean Walters report?

The filing proposes the sale of 22,330 Class A Common shares and lists the securities as RSU/PSU. It names Morgan Stanley Smith Barney LLC as the broker and notes a recent prior sale on 03/02/2026.

How many DDOG shares were sold recently by the same holder?

The excerpt shows a prior sale of 32,118 shares on 03/02/2026 for $3,550,192.04. That sale is listed separately from the proposed 22,330 share notice in the Form 144 excerpt.

Does the Form 144 specify the broker for the proposed DDOG sale?

Yes. The broker is listed as Morgan Stanley Smith Barney LLC at 1 New York Plaza, 8th Floor. The notice identifies the broker in the securities-to-be-sold section.

Are the shares being sold described as restricted awards in the DDOG filing?

Yes. The shares to be sold are identified as RSU/PSU, indicating they derive from restricted stock units or performance stock units as listed in the filing excerpt.

Does the Form 144 show proceeds expected from the proposed sale?

The excerpt does not state proceeds for the proposed 22,330 share sale. The prior sale on 03/02/2026 shows proceeds of $3,550,192.04; proceeds for the new notice are not included in the excerpt.

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Accepted by SEC EDGAR 03/11/2026 - 04:40 PM 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 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	22330	2748376.40	328274648	03/11/2026	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			22330	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
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	03/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/10/2024
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 Walters
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)