DDOG Rule 144 Notice: 10,094 Class A Shares Proposed Sale ($1.36M)

Rhea-AI Filing Summary

Datadog, Inc. Form 144 notice reports a proposed sale of 10,094 Class A common shares through Morgan Stanley Smith Barney, valued at approximately $1,358,551.46, with an approximate sale date of 09/17/2025 on NASDAQ. The shares were acquired on 04/07/2021 via previously exercised stock options and paid in cash at acquisition. The filing also discloses prior 10b5-1 sales in the past three months totaling 100,835 shares with gross proceeds of about $13,844,017.87 across three transactions on 06/25/2025, 09/15/2025, and 09/16/2025. Outstanding shares are listed as 323,270,704, so the proposed sale represents a small fraction of total shares.

Insights

Securities Analyst

TL;DR: Routine insider sale under Rule 144 and 10b5-1; not clearly material given outstanding share count.

The filing documents a planned disposition of 10,094 shares by a person who acquired the stock via option exercise in 2021, with prior 10b5-1-driven sales totaling 100,835 shares in the past three months. Relative to the issuer's reported outstanding shares (323,270,704), these disposals are small in percentage terms (<0.04%). The presence of 10b5-1 plans suggests scheduled, prearranged trading rather than opportunistic sales, which typically reduces the likelihood of information-driven transactions. For investors, this appears to be routine liquidity by insiders rather than a material event.

Corporate Governance Expert

TL;DR: Disclosure aligns with Rule 144 and 10b5-1 standards; documentation and representation are present.

The form provides required acquisition details, sale mechanics, broker identity, and a representation that the seller is unaware of undisclosed material adverse information. It lists the plan adoption/sale dates tied to 10b5-1 sales, which supports compliance with safe-harbor procedures. No indications of deviations from standard disclosure requirements are shown. From a governance perspective, the submission meets formal obligations but does not by itself indicate change in corporate control or strategy.

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	10094	1358551.46	323270704	09/17/2025	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			10094	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	09/16/2025	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
10b5-1 Sales for AMIT AGARWAL 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	06/25/2025	23058	3017522.06

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 reports a proposed sale of 10,094 Class A common shares valued at about $1,358,551.46, with an approximate sale date of 09/17/2025 on NASDAQ.

How were the shares being sold originally acquired?

The shares were acquired on 04/07/2021 through previously exercised stock options and paid for in cash.

Were there recent related sales by the same parties?

Yes. The filing discloses 10b5-1 sales totaling 100,835 shares on 06/25/2025, 09/15/2025, and 09/16/2025 with gross proceeds of about $13,844,017.87.

Who is the broker handling the proposed sale?

The broker listed is Morgan Stanley Smith Barney LLC, Executive Financial Services, New York, NY.

How large is the proposed sale relative to outstanding shares?

The issuer's outstanding shares are listed as 323,270,704, so the 10,094-share sale represents a very small fraction of total shares.