Trust files Form 144 to sell 20,000 DDOG shares

AGARWAL 2018 FAMILY TRUST submitted a Form 144 notice to sell Class A Common shares.

Rhea-AI Filing Summary

AGARWAL 2018 FAMILY TRUST submitted a Form 144 notice to sell Class A Common shares. The filing lists a proposed sale of 20,000 shares with proceeds shown as $2,211,400.00 on 04/15/2026. The excerpt also lists executed 10b5-1 sales of 20,000 shares on 03/09, 03/16, 03/23, 04/01, and 04/08/2026 with the proceeds reported for each sale. The cover line shows 328,274,648 shares outstanding as of 04/15/2026.

Insights

Insider Transactions Compliance Specialist

Form 144 records proposed and recent 10b5-1 sales by an affiliate trust; filings are routine notices of proposed resale.

The filing lists a proposed sale of 20,000 Class A Common shares and shows recent 10b5-1 executions of identical lot sizes with explicit cash proceeds. These are notification filings under resale rules, not company issuances.

Timing and cash‑flow recipients are the selling trust based on the entries; the filing ties several executed trades to a 10b5-1 plan. Subsequent SEC forms (e.g., Form 4) or broker confirmations would show final settlement details.

Key Figures

Proposed sale: 20,000 shares Proceeds (cover line): $2,211,400.00 Shares outstanding: 328,274,648 shares +3 more

6 metrics

Proposed sale 20,000 shares Form 144 cover entry, 04/15/2026

Proceeds (cover line) $2,211,400.00 Proceeds listed with 20,000-share cover entry, 04/15/2026

Shares outstanding 328,274,648 shares Cover line, as of 04/15/2026

10b5-1 sale proceeds (04/08/2026) $2,445,600.00 10b5-1 sale of 20,000 shares on 04/08/2026

10b5-1 sale proceeds (04/01/2026) $2,410,600.00 10b5-1 sale of 20,000 shares on 04/01/2026

10b5-1 sale proceeds (03/23/2026) $2,547,238.00 10b5-1 sale of 20,000 shares on 03/23/2026

Key Terms

Form 144, 10b5-1, Class A Common

3 terms

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.

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.

Class A Common financial

"Class A Common | Morgan Stanley Smith Barney LLC"

FAQ

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

What does the DDOG Form 144 from AGARWAL 2018 FAMILY TRUST report?

It reports a proposed resale of 20,000 Class A Common shares with proceeds listed as $2,211,400.00 on 04/15/2026. The excerpt also lists executed 10b5-1 sales of 20,000 shares on several dates in March–April 2026.

Were there recent sales by the trust under a 10b5-1 plan for DDOG?

Yes. The excerpt lists five executed 10b5-1 sales of 20,000 shares each on 03/09, 03/16, 03/23, 04/01, and 04/08/2026, with cash proceeds reported for each trade in the filing.

How many shares outstanding are shown in the filing for DDOG?

The cover line in the excerpt shows 328,274,648 shares outstanding as of 04/15/2026. This appears as a context line on the filing cover rather than a statement of shares being registered.

Does this Form 144 change DDOG's capitalization or issue new shares?

No. The Form 144 is a resale notice by an affiliate trust and lists secondary market sales under a 10b5-1 plan; it does not authorize new issuance or company dilution.

What proceeds were reported for the recent 10b5-1 sales in the excerpt?

The five listed 10b5-1 sales each for 20,000 shares show proceeds of $2,496,116.00, $2,534,672.00, $2,547,238.00, $2,410,600.00, and $2,445,600.00 on the respective dates in March–April 2026.

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

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Accepted by SEC EDGAR 04/15/2026 - 04:42 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	2211400.00	328274648	04/15/2026	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	04/08/2026	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	04/15/2026
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)