Datadog officer plans sale of 4,626 shares in 2026

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) received a notice that officer David Galloreese intends to sell 4,626 shares of Class A common stock through Morgan Stanley Smith Barney LLC, with the securities to be sold on or after September 1, 2026 following the vesting of restricted stock units and performance stock units as compensation.

The notice also lists prior sales by David Galloreese in the last three months, and states that the securities to be sold were registered on Form S-8.

Key Figures

Planned shares to be sold: 4,626 shares Shares sold June 9, 2026: 4,013 shares Proceeds June 9, 2026 sale: $918,590.15 +3 more

6 metrics

Planned shares to be sold 4,626 shares Class A common stock for David Galloreese under Rule 144, tied to awards vesting September 1, 2026

Shares sold June 9, 2026 4,013 shares Class A common stock sold by David Galloreese in the past three months

Proceeds June 9, 2026 sale $918,590.15 Consideration for 4,013 shares of Datadog Class A common stock sold by David Galloreese

Shares sold June 2, 2026 4,711 shares Class A common stock sold by David Galloreese in the past three months

Proceeds June 2, 2026 sale $1,258,564.38 Consideration for 4,711 shares of Datadog Class A common stock sold by David Galloreese

Date of Notice September 2, 2026 Filing date of the Rule 144 notice by David Galloreese

Key Terms

Rule 144, Restricted Stock Units, 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.

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.

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.

FAQ

What did Datadog (DDOG) disclose about David Galloreese’s planned stock sale?

Datadog disclosed that officer David Galloreese filed a Rule 144 notice to sell 4,626 shares of Class A common stock after restricted stock units and performance stock units vest on September 1, 2026 as part of compensation.

Which Datadog (DDOG) securities are covered by this Rule 144 notice?

The notice covers 4,626 shares of Datadog Class A common stock held for David Galloreese, to be sold through Morgan Stanley Smith Barney LLC after vesting of equity awards granted as compensation.

When are the Datadog (DDOG) shares expected to vest for David Galloreese?

The Class A common stock to be sold under the notice is tied to restricted stock units and performance stock units vesting on September 1, 2026, with the issuer identified as Datadog and the transaction type noted as compensation.

What Datadog (DDOG) stock sales has David Galloreese made in the past three months?

The notice lists two prior sales of Datadog Class A common stock by David Galloreese: 4,013 shares on June 9, 2026 for $918,590.15 and 4,711 shares on June 2, 2026 for $1,258,564.38.

How were the Datadog (DDOG) shares that may be sold registered?

The remarks state that the securities to be sold by David Galloreese under Rule 144 were registered on Form S-8, indicating they were issued under Datadog’s equity compensation arrangements.

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	0001757760
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	David Galloreese
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	4626	1087110	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			4626	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
David Galloreese 620 8th Avenue, 45th floor New York NY 10018	Class A Common Stock	06/09/2026	4013	918590.15
David Galloreese 620 8th Avenue, 45th floor New York NY 10018	Class A Common Stock	06/02/2026	4711	1258564.38

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/ David Galloreese
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)