Datadog officer plans $2.5M Class A stock sale

Datadog officer Adam Blitzer has filed a Rule 144 notice covering planned sales of Class A common stock sourced from recent RSU and PSU equity awards.

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) received a Rule 144 notice that officer Adam Blitzer plans to sell Class A common stock through Morgan Stanley Smith Barney LLC. The notice covers 12,032 shares of Class A common stock, with an aggregate market value of $2,517,455.36 and 334,904,614 shares outstanding as of the proposed sale date of September 3, 2026.

The shares to be sold come from equity awards, including 7,022 shares underlying Performance Stock Units and 5,010 shares underlying Restricted Stock Units, both acquired on September 1, 2026. The notice also reports that Blitzer sold 13,812 shares of Class A common stock for $2,940,631.43 on September 1, 2026. The securities were acquired under plans registered on Form S-8.

Key Figures

Shares to be sold under Rule 144: 12,032 shares Aggregate market value of planned sale: $2,517,455.36 Shares outstanding: 334,904,614 shares +4 more

7 metrics

Shares to be sold under Rule 144 12,032 shares Planned sale of Datadog Class A common stock by Adam Blitzer

Aggregate market value of planned sale $2,517,455.36 Value of 12,032 Datadog Class A shares to be sold

Shares outstanding 334,904,614 shares Datadog Class A common stock in connection with the planned sale on September 3, 2026

Performance Stock Units shares 7,022 shares Shares underlying Performance Stock Units acquired September 1, 2026

Restricted Stock Units shares 5,010 shares Shares underlying Restricted Stock Units acquired September 1, 2026

Recent shares sold 13,812 shares Datadog Class A shares sold by Adam Blitzer on September 1, 2026

Aggregate value of recent sale $2,940,631.43 Value of 13,812 shares sold on September 1, 2026

Key Terms

Rule 144, Form S-8, Restricted Stock Units, Performance Stock Units

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.

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.

Restricted Stock Units financial

"Common | 09/01/2026 | Restricted Stock Units | Issuer"

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

"Common | 09/01/2026 | 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.

FAQ

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

The filing discloses that officer Adam Blitzer plans to sell 12,032 shares of Datadog Class A common stock under Rule 144, with an aggregate market value of $2,517,455.36, and reports prior sales of 13,812 shares for $2,940,631.43.

How many Datadog (DDOG) shares is Adam Blitzer planning to sell under this notice?

Adam Blitzer plans to sell 12,032 shares of Datadog Class A common stock. The notice lists an aggregate market value of $2,517,455.36 for these shares and identifies Morgan Stanley Smith Barney LLC as the broker handling the transaction.

What Datadog equity awards are underlying the shares in this Rule 144 filing?

The shares in this filing come from Datadog equity awards: 7,022 shares from Performance Stock Units and 5,010 shares from Restricted Stock Units, both acquired on September 1, 2026. The securities were registered under Form S-8.

What recent Datadog (DDOG) share sales by Adam Blitzer are reported?

The notice reports that Adam Blitzer sold 13,812 shares of Datadog Class A common stock on September 1, 2026 for an aggregate sale price of $2,940,631.43 during the past three months.

How many Datadog (DDOG) shares were outstanding in this Rule 144 context?

The filing lists 334,904,614 shares of Datadog Class A common stock outstanding in connection with the planned sale of 12,032 shares as of the proposed sale date of September 3, 2026.

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

The planned sale of 12,032 shares of Datadog Class A common stock is to be handled by Morgan Stanley Smith Barney LLC, Executive Financial Services, at 1 New York Plaza, New York, as disclosed in the Rule 144 notice.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 09/03/2026 - 04:50 PM Accepted by SEC EDGAR 09/03/2026 - 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	0001861590
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	ADAM BLITZER
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	12032	2517455.36	334904614	09/03/2026	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 *
Common	09/01/2026	Performance Stock Units	Issuer			7022	09/01/2026	N/A
Common	09/01/2026	Restricted Stock Units	Issuer			5010	09/01/2026	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
ADAM BLITZER 620 8th Avenue, 45th Floor New York NY 10018	Common	09/01/2026	13812	2940631.43

144: Remarks and Signature

Remarks	Securities to be sold, acquired through RSU/PSU or upon option exercise, were registered on Form S-8
Date of Notice	09/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/22/2025
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/ Adam Roy Blitzer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)