DDOG Form 144: 20,000‑Share 10b5‑1 Sales Listed

Issuer: DDOG Form 144 notice reports proposed and recent sales of Class A Common stock by the Agarwal 2018 Family Trust.

Rhea-AI Filing Summary

Issuer: DDOG Form 144 notice reports proposed and recent sales of Class A Common stock by the Agarwal 2018 Family Trust. The filing lists multiple 10b5-1 programmed sales of 20,000 shares each on 03/09/2026, 03/16/2026, 03/23/2026, 04/01/2026, 04/08/2026, 04/15/2026, and 04/20/2026, with gross proceeds shown for each sale. The cover line shows a proposed sale of 20,000 shares with an aggregate amount listed as $2,589,600.00.

Insights

Securities Counsel

Form 144 lists scheduled 10b5-1 dispositions by a family trust; multiple 20,000-share trades are reported.

The filing documents proposed and completed sales of Class A Common stock under a Rule 10b5-1 plan, showing discrete sale dates and gross proceeds per trade. The trust is the selling holder named throughout the excerpt.

Cash‑flow treatment to issuer is not stated in the excerpt; regulatory mechanics for Form 144 filing and broker execution would follow standard resale procedures.

Key Figures

Proposed shares on cover: 20,000 shares Aggregate amount shown on cover: $2,589,600.00 Sale on 03/09/2026: 20,000 shares +2 more

5 metrics

Proposed shares on cover 20,000 shares cover/proposed sale line

Aggregate amount shown on cover $2,589,600.00 cover line associated with 20,000 shares

Sale on 03/09/2026 20,000 shares 10b5-1 sale listing dated 03/09/2026 with proceeds $2,496,116.00

Sale on 03/16/2026 20,000 shares 10b5-1 sale listing dated 03/16/2026 with proceeds $2,534,672.00

Sale on 04/20/2026 20,000 shares 10b5-1 sale listing dated 04/20/2026 with proceeds $2,519,524.00

Key Terms

10b5-1, Form 144, Previously Exercised Stock Options

3 terms

10b5-1 regulatory

"10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue"

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.

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.

Previously Exercised Stock Options financial

"Previously Exercised Stock Options | Issuer | 20000 | 04/07/2021"

FAQ

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

What does DDOG Form 144 disclose about the Agarwal 2018 Family Trust?

It discloses planned and completed sales of Class A Common stock by the Agarwal 2018 Family Trust. The excerpt lists multiple 20,000-share sales executed under a 10b5-1 plan on specific dates in March–April 2026.

How many shares were sold under the 10b5-1 plan in the excerpt?

The excerpt shows multiple discrete sales of 20,000 shares each. Sales dated 03/09/2026 through 04/20/2026 are listed, each with separate gross proceeds figures.

What proceeds are shown for the sales in the filing?

Each listed 20,000-share transaction includes a gross proceeds figure, for example $2,496,116.00 on 03/09/2026 and $2,519,524.00 on 04/20/2026. Other sale dates show similar per-trade amounts in the excerpt.

Was the issuer selling shares or were these resales by a holder?

The excerpt identifies the transactions as 10b5-1 Sales for the Agarwal 2018 Family Trust, indicating these are resales by a selling holder rather than primary issuer sales in this excerpt.

Does the Form 144 excerpt state whether proceeds go to the issuer?

The excerpt does not state the issuer’s receipt of proceeds; it lists sales by the Agarwal 2018 Family Trust. The filing language and table indicate these are resale transactions by the named trust.

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

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Accepted by SEC EDGAR 04/27/2026 - 04:33 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	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	2589600.00	328274648	04/27/2026	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 Common	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	04/20/2026	20000	2519524.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	04/15/2026	20000	2400000.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	04/08/2026	20000	2445600.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	04/01/2026	20000	2410600.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	03/23/2026	20000	2547238.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	03/16/2026	20000	2534672.00
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	03/09/2026	20000	2496116.00

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	04/27/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/08/2025
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/ Ellen Jan
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)