[144] Datadog, Inc. SEC Filing

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) filed a Form 144 reporting a proposed sale of 91,667 shares of Class A common stock through Morgan Stanley Smith Barney LLC with an aggregate market value of $13,916,883.94. The filing lists the approximate date of sale as 10/06/2025 and names NASDAQ as the exchange.

The securities were acquired as Restricted Stock Units on 04/29/2011 from the issuer, and no sales by the filer are reported in the past three months. The notice includes the standard representation that the seller does not possess undisclosed material adverse information and contains the required signature attestation.

Positive

• Full disclosure of broker and sale details (Morgan Stanley Smith Barney LLC; approximate sale date 10/06/2025)
• Acquisition origin documented as Restricted Stock Units dated 04/29/2011, showing long-held position
• No securities sold in prior three months ("Nothing to Report") which clarifies recent insider activity

Negative

• Large aggregate market value of $13,916,883.94 could represent near-term selling pressure when executed
• Single-date approximate sale (10/06/2025) concentrates execution timing and potential market impact

Insights

Securities Insider Transactions Analyst

Insider sale of $13.9M via broker signals a sizable planned disposition.

The filing documents a proposed sale of 91,667 Class A shares to be executed through Morgan Stanley Smith Barney LLC on or about 10/06/2025

This is an off-schedule disclosure of a non-open-market issuance origin: the shares were acquired as restricted stock units on 04/29/2011

Watch near-term trading around 10/06/2025 for execution size; the seller also certifies absence of undisclosed material information as required.

Corporate Counsel (Securities Compliance)

Form 144 mechanics and attestation appear complete for a Rule 144 sale.

The filing includes required broker identification, share count, aggregate market value, acquisition date and acquisition type (Restricted Stock Units), and notes no recent sales in the prior three months.

The seller's signed representation about material information and the explicit sale date support compliance with Rule 144 timing and reporting; monitor actual trade reporting for conformity with this notice.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	91667	13916883.94	323270704	10/06/2025	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	04/29/2011	Restricted Stock Units	Issuer			91667	04/29/2011	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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Datadog (DDOG) report in this Form 144?

The filing reports a proposed sale of 91,667 Class A shares with an aggregate market value of $13,916,883.94, to be sold via Morgan Stanley Smith Barney LLC on or about 10/06/2025.

When were the shares being sold originally acquired?

The shares were acquired as Restricted Stock Units on 04/29/2011 from the issuer.

Does the filer report other recent sales of Datadog shares?

No. The Form 144 indicates "Nothing to Report" for securities sold during the past three months.

Which exchange will the proposed sale use?

The filing lists NASDAQ as the securities exchange for the proposed sale.

Who is the broker handling the proposed sale?

The broker named is Morgan Stanley Smith Barney LLC, located at 1 New York Plaza, New York, NY.