DDOG insider sale notice — 45,444 Class A shares via Morgan Stanley

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) filed a Form 144 notifying of a proposed sale of 45,444 Class A common shares through Morgan Stanley Smith Barney LLC on or about 10/01/2025. The filing lists an aggregate market value of $6,471,225.60 based on 323,270,704 shares outstanding. The shares to be sold were acquired on 04/07/2021 through previously exercised stock options and paid for in cash on the same date. The filing also discloses related recent sales by the AGARWAL 2018 FAMILY TRUST: 44,444, 33,333, 10,094, and 18 Class A shares on 09/15/2025–09/18/2025, which generated gross proceeds of approximately $12,000,138.59. The notice includes the standard representation that the seller is not aware of undisclosed material adverse information.

Positive

• None.

Negative

• Form 144 reports planned disposal of 45,444 Class A common shares with an aggregate market value of $6,471,225.60.
• The filing discloses recent 10b5-1 sales by AGARWAL 2018 FAMILY TRUST totaling 87,889 shares on 09/15/2025–09/18/2025 with gross proceeds of approximately $12,000,138.59.

Insights

Securities Analyst

TL;DR: Form 144 shows a planned sale of 45,444 DDOG shares and substantial prior 10b5-1 sales by a related trust totaling 87,889 shares.

The filing documents a routine Rule 144 notice for the sale of 45,444 Class A shares via Morgan Stanley Smith Barney, acquired by exercise of options in April 2021 and paid in cash. The filing also transparently reports multiple 10b5-1 plan sales by the AGARWAL 2018 FAMILY TRUST between 09/15/2025 and 09/18/2025 totaling 87,889 shares and gross proceeds of approximately $12.0 million. This is disclosure of insider-affiliated selling activity rather than operating results; it allows market participants to see the volume and timing of planned sales.

Corporate Governance Expert

TL;DR: The Form 144 provides compliant disclosure of insider-related sales and confirms use of a broker and 10b5-1 sales by a family trust.

The notice includes required statements about lack of undisclosed material information and cites a broker for execution. It also specifies the acquisition method (previously exercised options) and payment details, which supports regulatory transparency. The separate listing of recent 10b5-1 sales by the AGARWAL 2018 FAMILY TRUST documents executed transactions and gross proceeds, aiding governance oversight of insider dispositions.

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	45444	6471225.60	323270704	10/01/2025	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	04/07/2021	Previously Exercised Stock Options	Issuer			45444	04/07/2021	Cash

* 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 AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	09/18/2025	18	2434.14
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	09/17/2025	10094	1356208.64
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	09/16/2025	33333	4493188.40
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	09/15/2025	44444	6148307.41

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's (DDOG) Form 144 report?

The Form 144 notifies a proposed sale of 45,444 Class A common shares via Morgan Stanley Smith Barney, with an aggregate market value of $6,471,225.60.

How were the shares being sold by the filer acquired?

The shares were acquired on 04/07/2021 through previously exercised stock options and payment was made in cash on that date.

Did the filing disclose any recent related sales?

Yes. The AGARWAL 2018 FAMILY TRUST sold 44,444, 33,333, 10,094, and 18 Class A shares on 09/15/2025–09/18/2025, totaling 87,889 shares and about $12,000,138.59 gross proceeds.

Which broker is named for the proposed sale?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY 10004.

What representation does the seller make in the Form 144?

The seller represents that they do not know of any material adverse information about the issuer that has not been publicly disclosed.