Datadog officer plans sale of 13,169 shares

Officer Sean Michael Walters has filed a Rule 144 notice to sell Datadog Class A shares received from vested equity awards.

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) is the issuer of Class A common stock covered by this notice, which reports a planned sale of 13,169 shares on behalf of officer Sean Michael Walters under Rule 144. The shares to be sold arise from vested restricted stock units and performance stock units and were previously registered on Form S-8.

Key Figures

Planned shares to be sold: 13,169 shares Shares sold on June 11, 2026: 11,876 shares Proceeds on June 11, 2026 sale: $2,743,550.77 +3 more

6 metrics

Planned shares to be sold 13,169 shares Class A common stock planned for sale under Rule 144; trade date listed as September 1, 2026

Shares sold on June 11, 2026 11,876 shares Class A common stock sold by Sean Michael Walters in the last 3 months

Proceeds on June 11, 2026 sale $2,743,550.77 Aggregate sale price for 11,876 Datadog Class A shares

Shares sold on June 2, 2026 13,409 shares Class A common stock sold by Sean Michael Walters in the last 3 months

Proceeds on June 2, 2026 sale $3,582,273.35 Aggregate sale price for 13,409 Datadog Class A shares

Date of notice September 2, 2026 Filing date of the Rule 144 notice by Sean Michael Walters

Key Terms

Rule 144, Form S-8, Restricted Stock Units, Performance Stock Units, +1 more

5 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.

Form S-8 regulatory

"Securities to be sold 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.

Restricted Stock Units financial

"Restricted Stock Units and Performance Stock Units vesting"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Performance Stock Units financial

"Restricted Stock Units and Performance Stock Units vesting"

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.

Class A Common Stock financial

"Class A Common Stock | Morgan Stanley Smith Barney LLC"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

What does the Form 144 filing mean for Datadog (DDOG) shares?

It reports that Sean Michael Walters, an officer of Datadog, has filed a notice under Rule 144 to sell 13,169 shares of Datadog Class A common stock obtained from vested restricted and performance stock units.

How many Datadog (DDOG) shares are planned to be sold under this Form 144?

The notice states a planned sale of 13,169 shares of Datadog Class A common stock, with the securities to be sold on or after September 1, 2026, arising from vested restricted stock units and performance stock units.

What Datadog (DDOG) stock sales has Sean Michael Walters made in the last 3 months?

The notice lists two prior sales of Datadog Class A shares: 11,876 shares on June 11, 2026 for $2,743,550.77 and 13,409 shares on June 2, 2026 for $3,582,273.35.

On which market are the Datadog (DDOG) shares in this Form 144 traded?

The Class A common stock referenced in the notice is listed for trading on NASDAQ, as indicated in the securities information section.

Were the Datadog (DDOG) shares in this Form 144 registered previously?

Yes. The remarks state that the securities to be sold were registered on Form S-8, indicating they come from Datadog’s equity compensation arrangements.

What is the source of the Datadog (DDOG) shares being sold by Sean Michael Walters?

The securities to be sold are described as restricted stock units and performance stock units vesting, with Datadog listed as the issuer and the transaction categorized as compensation.

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

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Available on EDGAR 09/02/2026 - 04:34 PM Accepted by SEC EDGAR 09/02/2026 - 04:33 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	0001903980
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	866-329-4466
Name of Person for Whose Account the Securities are To Be Sold	Sean Michael Walters
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 Stock	Morgan Stanley Smith Barney LLC Executive Services 200 W Civic Center Dr - 4th Floor Sandy UT 84070	13169	3094715	334904614	09/02/2026	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 Stock	09/01/2026	Restricted Stock Units and Performance Stock Units vesting	Issuer			13169	09/01/2026	Compensation

* 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
Sean Michael Walters 620 8th Avenue, 45th floor New York NY 10018	Class A Common Stock	06/11/2026	11876	2743550.77
Sean Michael Walters 620 8th Avenue, 45th floor New York NY 10018	Class A Common Stock	06/02/2026	13409	3582273.35

144: Remarks and Signature

Remarks	Securities to be sold were registered on Form S-8
Date of Notice	09/02/2026
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/ Sean Michael Walters
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)