Datadog officer plans $1.17M, 5,280-share sale

A Datadog officer filed a Rule 144 notice to sell 5,280 Class A shares, following over $2.8 million of sales in the prior three months.

Available on EDGAR 09/14/2026 - 04:45 PM EDT Accepted by SEC EDGAR 09/14/2026 - 04:40 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) received a notice that officer Kerry Acocella plans to sell 5,280 shares of Class A common stock under Rule 144, with an indicated aggregate market value of $1,167,988.80 and reference to 334,904,614 shares outstanding as of the notice. The shares are to be sold through Morgan Stanley Smith Barney LLC and were acquired via RSUs, PSUs or option exercises that were registered on Form S-8. In the prior three months, Acocella reported sales of 7,343 shares on September 1, 2026 for $1,563,353.34 and 5,371 shares on June 15, 2026 for $1,256,311.27, including sales made under a Rule 10b5-1 trading plan.

Key Figures

Shares planned for sale: 5,280 shares Aggregate market value of planned sale: $1,167,988.80 Shares outstanding (context): 334,904,614 shares +5 more

8 metrics

Shares planned for sale 5,280 shares Class A common stock to be sold under Rule 144

Aggregate market value of planned sale $1,167,988.80 Value associated with the 5,280 shares in the notice

Shares outstanding (context) 334,904,614 shares Referenced outstanding Datadog Class A shares

Shares sold on September 1, 2026 7,343 shares Prior sale of Class A common stock by Kerry Acocella

Proceeds on September 1, 2026 sale $1,563,353.34 Aggregate value of 7,343 shares sold

Shares sold on June 15, 2026 5,371 shares 10b5-1 sale of Class A common stock

Proceeds on June 15, 2026 sale $1,256,311.27 Aggregate value of 5,371 shares sold

Date of Rule 144 notice September 14, 2026 Date the notice was signed

Key Terms

Rule 144, Form S-8, RSU/PSU, 10b5-1, +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

"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.

RSU/PSU financial

"Securities to be sold, acquired through RSU/PSU or upon option exercise"

10b5-1 regulatory

"10b5-1 Sales for KERRY ACOCELLA"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Class A Common financial

"Class A Common | Morgan Stanley Smith Barney LLC"

FAQ

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

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

It discloses that officer Kerry Acocella plans to sell 5,280 shares of Datadog Class A common stock under Rule 144, with an indicated aggregate market value of $1,167,988.80, from shares acquired through RSUs, PSUs or option exercises registered on Form S-8.

How many Datadog (DDOG) shares has Kerry Acocella sold recently?

Over the past three months, Kerry Acocella reported selling 7,343 shares on September 1, 2026 for $1,563,353.34 and 5,371 shares on June 15, 2026 for $1,256,311.27, in addition to the planned sale of 5,280 shares disclosed in the notice.

What is the reference share count for Datadog (DDOG) in this Form 144?

The notice references 334,904,614 shares of Datadog Class A common stock outstanding in connection with the proposed Rule 144 sale of 5,280 shares. This figure provides context for the size of the planned disposition.

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

The filing states that the securities to be sold, acquired through RSU/PSU or upon option exercise, were registered on Form S-8. This indicates the shares were issued under an employee benefit or similar plan registered with the SEC.

Is there a trading plan mentioned in the Datadog (DDOG) Form 144?

Yes. The section on securities sold during the past three months notes 10b5-1 sales for Kerry Acocella, including a sale of 5,371 shares of Class A common stock on June 15, 2026 for $1,256,311.27.

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

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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	0001903975
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	Kerry Acocella
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	5280	1167988.80	334904614	09/14/2026	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	09/01/2026	RSU/PSU	Issuer			5280	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
KERRY ACOCELLA 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	09/01/2026	7343	1563353.34
10b5-1 Sales for KERRY ACOCELLA 620 8th Avenue, 45th Floor New York NY 10018	Class A Common	06/15/2026	5371	1256311.27

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	09/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/11/2025
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/ Kerry Acocella
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)