Insider plans sale of 20,000 Class A shares

An affiliated holder has filed to sell 20,000 shares of Class A Common Stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with the proposed transaction dated 07/30/2026 on NASDAQ.

Rhea-AI Filing Summary

An affiliated holder has filed to sell 20,000 shares of Class A Common Stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with the proposed transaction dated 07/30/2026 on NASDAQ. The shares were acquired on 04/07/2021 via previously exercised stock options paid in cash.

The filing also lists multiple Rule 10b5-1 plan sales over the prior three months by related trusts and a family foundation, each involving blocks of Class A Common shares.

Key Figures

Proposed shares to be sold: 20,000 shares Aggregate amount for proposed sale: $5,284,000.00 Shares acquired from options: 20,000 shares +4 more

7 metrics

Proposed shares to be sold 20,000 shares Class A Common, proposed NASDAQ sale on 07/30/2026

Aggregate amount for proposed sale $5,284,000.00 Associated with 20,000 Class A Common shares in securities information

Shares acquired from options 20,000 shares Acquired 04/07/2021 via previously exercised stock options, cash payment

Recent 10b5-1 block sale size 20,000 shares Repeated sale size for Agarwal 2018 Family Trust between 05/2026 and 07/2026

10b5-1 sale on 07/23/2026 20,000 shares; $4,897,334.00 Class A Common, Agarwal 2018 Family Trust

Foundation sale on 06/16/2026 10,000 shares; $2,324,900.00 Class A Common, Agarwal Jan Family Foundation

A-J-M 2025 Trust sale on 05/07/2026 38,893 shares; $7,444,057.97 Class A Common, 10b5-1 sale

Key Terms

Form 144, Rule 10b5-1, Previously Exercised Stock Options, Class A Common, +1 more

5 terms

Form 144 regulatory

"144: Securities Information Class A Common"

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.

Rule 10b5-1 regulatory

"10b5-1 Sales for AGARWAL 2018 FAMILY TRUST"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Previously Exercised Stock Options financial

"Class A | 04/07/2021 | Previously Exercised Stock Options"

Class A Common financial

"Class A Common | Morgan Stanley Smith Barney LLC"

Non-Exempt Trust financial

"10b5-1 Sales for A-J-M 2025 NON-EXEMPT TRUST"

FAQ

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

What does the Form 144 filing for DDOG report?

The Form 144 reports a proposed sale of 20,000 Class A Common shares on NASDAQ on 07/30/2026. These shares were previously acquired on 04/07/2021 through exercised stock options paid in cash.

How many DDOG shares are proposed to be sold under this Form 144?

The filing covers a proposed sale of 20,000 Class A Common shares. These are listed under the securities to be sold section, with Morgan Stanley Smith Barney LLC Executive Financial Services as the broker.

At what aggregate amount are the 20,000 DDOG shares indicated in the Form 144?

The 20,000 Class A Common shares are associated with an aggregate amount of $5,284,000.00. This figure appears in the securities information section alongside the proposed NASDAQ sale dated 07/30/2026.

How were the DDOG shares in this Form 144 originally acquired?

The 20,000 Class A shares were acquired on 04/07/2021 through previously exercised stock options. The acquisition was for cash, as indicated in the securities to be sold section of the filing.

What recent DDOG share sales are disclosed for related trusts and foundations?

The filing lists several Rule 10b5-1 sales from May to July 2026, including multiple 20,000-share blocks by the Agarwal 2018 Family Trust and other 2025 Non-Exempt Trusts, plus a 10,000-share sale by the Agarwal Jan Family Foundation.

Are the recent DDOG sales made under a Rule 10b5-1 trading plan?

Yes. Many of the sales disclosed for the Agarwal 2018 Family Trust and certain 2025 Non-Exempt Trusts are labeled as "10b5-1 Sales", indicating they were executed under Rule 10b5-1 trading plans.

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

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Available on EDGAR 07/30/2026 - 04:22 PM Accepted by SEC EDGAR 07/30/2026 - 04:22 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	0001540517
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	AGARWAL 2018 FAMILY TRUST
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	Director

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	20000	5284000.00	330825798	07/30/2026	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 *
Class A	04/07/2021	Previously Exercised Stock Options	Issuer			20000	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	07/23/2026	20000	4897334.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	07/16/2026	20000	5230676.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	07/09/2026	20000	5348252.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	07/02/2026	20000	5224412.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	06/25/2026	20000	4402376.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	06/18/2026	20000	4418366.00
Agarwal Jan Family Foundation 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	06/16/2026	10000	2324900.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	06/12/2026	20000	4631192.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	05/11/2026	20000	4002638.00
10b5-1 Sales for A-J-M 2025 NON-EXEMPT TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	05/07/2026	38893	7444057.97
10b5-1 Sales for A-J-K 2025 NON-EXEMPT TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	05/07/2026	38893	7444057.97
10b5-1 Sales for A-J-I 2025 NON-EXEMPT TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	05/07/2026	38896	7444632.17
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	05/04/2026	20000	2894938.00

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the previous exercise of stock options during the period of 04/07/2021 through 07/14/2021. Securities to be sold, acquired through RSU/PSU or upon option exercise, were registered on Form S-8.
Date of Notice	07/30/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/13/2026
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/ Ellen Jan
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)