[144] Datadog, Inc. SEC Filing

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) Form 144 notice reports a proposed sale of 2,573 Class A common shares by a filing party through Morgan Stanley Smith Barney, with an aggregate market value of $351,677.64 based on the filing. The shares were acquired on 09/01/2025 upon vesting of Restricted Stock Units and Performance Stock Units and were to be sold approximately on 09/02/2025. The filing lists 323,270,704 shares outstanding for the class. The notice also discloses a prior sale by David Galloreese of 10,216 shares on 06/02/2025 for gross proceeds of $1,193,647.66. The filer certifies no undisclosed material adverse information and includes the standard attestation language regarding trading plans and Rule 10b5-1.

Positive

• Disclosure completeness: The Form 144 includes acquisition date, nature of acquisition (RSUs/PSUs), broker, and prior three-month sales.
• Attestation present: Filer certifies no undisclosed material adverse information and references Rule 10b5-1 trading plans.

Negative

• Insider selling: The filing records a proposed sale and a recent prior sale by an insider, which market participants may view negatively despite small size relative to outstanding shares.

Insights

Securities Analyst

TL;DR: Routine insider sale of vested equity; size is immaterial relative to shares outstanding.

The filing documents an ordinary-course disposition of vested RSUs/PSUs through a broker, indicating liquidity realization rather than a corporate event. At 2,573 shares and $351,677.64, the proposed sale represents a negligible fraction of the 323 million shares outstanding, suggesting limited market impact. The prior June sale of 10,216 shares for $1.19 million is consistent with periodic insider liquidity. No earnings or operational data are disclosed to change the investment thesis.

Compliance/Risk Analyst

TL;DR: Form 144 appears complete for a routine Rule 144 disposition; attestation on material nonpublic information included.

The notice provides required purchase and payment details, acquisition date (09/01/2025), nature of acquisition (RSUs/PSUs vesting), broker identity, and prior sales within three months. The signer represents absence of undisclosed material adverse information and references trading-plan considerations. From a compliance perspective, the filing meets disclosure expectations for an insider sale under Rule 144; no regulatory flags are evident from the data provided.

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
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	2573	351677.64	323270704	09/02/2025	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	09/01/2025	Restricted Stock Units and Performance Stock Units vesting	Issuer			2573	09/01/2025	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	06/02/2025	10216	1193647.66

144: Remarks and Signature

Remarks

Date of Notice

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

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

FAQ

What shares of DDOG are being offered for sale under this Form 144?

The filer proposes to sell 2,573 shares of Class A common stock acquired on 09/01/2025 upon RSU/PSU vesting.

What is the reported market value of the proposed DDOG sale?

The aggregate market value is reported as $351,677.64 for the 2,573 shares.

Who is the broker handling the proposed DDOG sale?

The broker named is Morgan Stanley Smith Barney LLC Executive Services based in Sandy, UT.

Has the seller made other recent DDOG sales?

Yes; the filing discloses a sale by David Galloreese of 10,216 shares on 06/02/2025 for gross proceeds of $1,193,647.66.

Does the filer state there is any undisclosed material information?

The filer signs a representation that they do not know of any material adverse information about the issuer that has not been publicly disclosed.