Datadog officer plans $2.8M stock sale

An officer of Datadog has filed a Rule 144 notice to sell 12,700 Class A shares with an indicated value of about $2.8 million.

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) received a Rule 144 notice that officer Yanbing Li plans to sell 12,700 shares of Class A common stock through Morgan Stanley Smith Barney LLC Executive Financial Services. The planned sale has an indicated value of $2,815,844 based on recent market prices.

The shares to be sold were acquired via an Employee Stock Purchase Plan and Performance Stock Units, and the company notes that equity acquired through RSU/PSU grants or option exercises was registered on Form S-8. Li also reported a prior sale of 11,206 shares on September 2, 2026.

Key Figures

Shares to be sold under Rule 144: 12,700 shares Aggregate market value of planned sale: $2,815,844 Shares outstanding: 334,904,614 shares +3 more

6 metrics

Shares to be sold under Rule 144 12,700 shares Planned sale of Datadog Class A common stock by officer Yanbing Li

Aggregate market value of planned sale $2,815,844 Indicated value for the 12,700 shares referenced in the notice

Shares outstanding 334,904,614 shares Datadog Class A common stock outstanding as of September 11, 2026; baseline figure

ESPP shares to be sold 401 shares Employee Stock Purchase Plan shares acquired May 15, 2025

Performance Stock Units shares to be sold 12,299 shares Shares from Performance Stock Units credited September 1, 2025

Recent sale in past 3 months 11,206 shares for $2,385,805.59 Sale of Datadog Class A common stock on September 2, 2026 by Yanbing Li

Key Terms

Rule 144, Employee Stock Purchase Plan, Performance Stock Units, Form S-8

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Employee Stock Purchase Plan financial

"Class A Common | 05/15/2025 | Employee Stock Purchase Plan | Issuer"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

Performance Stock Units financial

"Class A Common | 09/01/2025 | Performance Stock Units | Issuer"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

Form S-8 regulatory

"Securities to be sold, acquired through RSU/PSU or upon option exercise, were registered on Form S-8."

A Form S-8 is a U.S. Securities and Exchange Commission registration that lets a public company set aside shares for employee benefit plans and stock-based compensation. Think of it as opening a dedicated account that authorizes the company to issue or reserve stock for workers and directors; it matters to investors because it enables share dilution when those awards are granted or exercised and signals how management is compensated and incentivized.

FAQ

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

What does the Form 144 filing disclose for Datadog, Inc. (DDOG)?

It discloses that officer Yanbing Li has notified of an intent to sell 12,700 shares of Datadog Class A common stock under Rule 144, with an indicated value of $2,815,844, through Morgan Stanley Smith Barney LLC Executive Financial Services.

How many Datadog (DDOG) shares is the officer planning to sell and at what indicated value?

The notice covers 12,700 shares of Datadog Class A common stock, with an indicated aggregate market value of $2,815,844 as of the filing date reference.

How were the Datadog (DDOG) shares to be sold acquired by the officer?

The shares were acquired through an Employee Stock Purchase Plan (401 shares acquired on May 15, 2025) and Performance Stock Units (12,299 shares credited on September 1, 2025). The company states RSU/PSU or option-exercise shares were registered on Form S-8.

Has the Datadog (DDOG) officer sold any shares in the past three months?

Yes. The filing reports that Yanbing Li sold 11,206 shares of Datadog Class A common stock on September 2, 2026 for aggregate proceeds of $2,385,805.59 during the past three months.

What is the reported total number of Datadog (DDOG) shares outstanding in this notice?

The notice lists 334,904,614 shares of Datadog Class A common stock outstanding as of September 11, 2026; this figure is provided as context and is not the amount being sold under the notice.

Which broker is handling the planned Datadog (DDOG) share sale?

The planned sale of 12,700 shares of Datadog Class A common stock is to be handled through Morgan Stanley Smith Barney LLC Executive Financial Services, based at 1 New York Plaza, New York.

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

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Available on EDGAR 09/11/2026 - 04:33 PM Accepted by SEC EDGAR 09/11/2026 - 04:32 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	0001783061
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	YANBING LI
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	Officer

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	12700	2815844.00	334904614	09/11/2026	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	05/15/2025	Employee Stock Purchase Plan	Issuer			401	05/15/2025	Cash
Class A Common	09/01/2025	Performance Stock Units	Issuer			12299	09/01/2025	N/A

* 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
YANBING LI 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	09/02/2026	11206	2385805.59

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the purchase of employee stock purchase plan shares during the period of 05/15/2025 through 11/14/2025. Securities to be sold, acquired through RSU/PSU or upon option exercise, were registered on Form S-8.
Date of Notice	09/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/12/2026
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/ Yanbing Li
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)