Form 144 shows trusts selling DDOG Class A shares (DDOG)

Rhea-AI Filing Summary

Issuer reported dispositions of Class A Common stock via Form 144. The filing lists multiple sales executed under 10b5-1 arrangements and dispositions tied to previously exercised stock options. Examples shown include 20,000-share transfers by AGARWAL 2018 FAMILY TRUST on several dates and three ~38,893–38,896-share 10b5-1 sales on 05/07/2026.

Insights

Corporate Governance Analyst

Routine Form 144 notices of resale under 10b5-1 and option-related dispositions.

The filing lists multiple share dispositions of Class A Common stock, including repeated 20,000-share sales by a family trust and three near-38,900-share 10b5-1 trades dated 05/07/2026. These entries document planned or effected transfers rather than corporate actions.

Impact depends on holder liquidity decisions; cash amounts are shown per sale in the excerpt (for example, $7,444,057.97). Subsequent filings may provide additional context such as total outstanding holdings or whether transactions were completed under a trading plan.

Key Figures

Example trust sale size: 20,000 shares 10b5-1 sale sizes: 38,893; 38,893; 38,896 shares Proceeds example: $7,444,057.97 +2 more

5 metrics

Example trust sale size 20,000 shares AGARWAL 2018 FAMILY TRUST multiple dates (Mar–May 2026)

10b5-1 sale sizes 38,893; 38,893; 38,896 shares 10b5-1 Sales dated <date>05/07/2026</date>

Proceeds example $7,444,057.97 Proceeds shown for a 38,893-share 10b5-1 sale on <date>05/07/2026</date>

Proceeds example $7,444,632.17 Proceeds shown for a 38,896-share 10b5-1 sale on <date>05/07/2026</date>

Option-related disposition 20,000 shares Previously Exercised Stock Options dated <date>04/07/2021</date>

Key Terms

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

3 terms

10b5-1 regulatory

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

Previously Exercised Stock Options financial

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

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.

FAQ

What does the DDOG Form 144 filing disclose?

The filing discloses dispositions of Class A Common stock. It lists multiple 20,000-share transactions by AGARWAL 2018 FAMILY TRUST and three ~38,893–38,896-share 10b5-1 sales dated 05/07/2026.

How many shares were sold in the listed 10b5-1 transactions?

The excerpt shows three 10b5-1 transactions of 38,893, 38,893, and 38,896 shares executed on 05/07/2026, each with corresponding sale proceeds listed in the filing.

What sale amounts are shown for the example transactions?

The filing shows dollar proceeds for example trades, such as $7,444,057.97 for two 38,893-share transactions and $7,444,632.17 for a 38,896-share transaction on 05/07/2026.

Were any sales tied to option exercises?

Yes. The filing references Previously Exercised Stock Options dated 04/07/2021 and lists a 20,000-share disposition associated with that exercise, with Cash indicated as the consideration.

Who appear to be the selling parties in these transactions?

The excerpt identifies selling parties including AGARWAL 2018 FAMILY TRUST and several named 10b5-1 trusts (addressed at 620 8th Avenue, New York), which are listed as the sources of the dispositions.

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

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Accepted by SEC EDGAR 05/11/2026 - 04:36 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	4003200.00	330825798	05/11/2026	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 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
10b5-1 Sales for AGARWAL 2018 FAMILY TRUST 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	04/27/2026	20000	2629398.00
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	05/11/2026
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)