Were the Datadog (DDOG) share sales made under a Rule 10b5-1 trading plan?

Yes. The filing states that the shares were sold pursuant to a Rule 10b5-1 plan dated June 13, 2025 , described as a contract, instruction or written plan intended to satisfy Rule 10b5-1(c) affirmative defense conditions.

Datadog (NASDAQ: DDOG) director discloses December 2025 Class A share sales

Q: What insider stock transaction did Datadog (DDOG) disclose in this Form 4?

The filing shows a Datadog, Inc. director reporting multiple sales of Class A common stock on December 12, 2025 executed by the 2019 Shah Family Trust .

Q: How many Datadog shares were held after the reported transactions?

Following the reported sales, the 2019 Shah Family Trust held 348,617 shares of Datadog Class A common stock , reported as indirect beneficial ownership for the insider.

Q: At what prices were the Datadog Class A shares sold on December 12, 2025?

The reported sales used weighted-average prices , with execution ranges from $144.97 to $149.96 per share across several blocks, plus one separate sale at $150.10 per share.

Q: Who is reported as holding the Datadog shares involved in the transactions?

The shares are held by the 2019 Shah Family Trust , and the reporting person is identified as the trustee , with indirect beneficial ownership reported through the trust.

Q: What does the Datadog insider say about beneficial ownership of these shares?

The reporting person disclaims Section 16 beneficial ownership of the trust-held shares, except to the extent of any pecuniary interest, and notes that the report should not be deemed an admission of beneficial ownership for any purpose.

Filing Impact

(High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Datadog, Inc. director reported insider stock sales executed by the 2019 Shah Family Trust, for which the director serves as trustee. On December 12, 2025, the trust sold several blocks of Datadog Class A common stock under a Rule 10b5-1 trading plan dated June 13, 2025. The shares were sold at weighted-average prices with execution ranges from $144.97 to $149.96 per share, plus one sale at $150.10 per share. After these transactions, the trust held 348,617 Datadog Class A shares indirectly for the reporting person.

Insider Trade Summary

Net Seller: 7,916 shares ($1,163,207)

Net Sell 7 txns

Insider Shah Shardul

Role Director

Sold 7,916 shs ($1.16M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	1,310	$145.658	$191K
Sale	Class A Common Stock	4,406	$146.4386	$645K
Sale	Class A Common Stock	700	$147.4504	$103K
Sale	Class A Common Stock	500	$148.598	$74K
Sale	Class A Common Stock	900	$149.6244	$135K
Sale	Class A Common Stock	100	$150.10	$15K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 355,223 shares (Indirect, By Trust); Class A Common Stock — 2,106 shares (Direct)

Footnotes (1)

Shares sold pursuant to a 10b5-1 plan dated June 13, 2025. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $144.97 to $145.89. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price. The shares are held by the 2019 Shah Family Trust, of which Reporting Person is Trustee. The Reporting Person disclaims Section 16 beneficial ownership of these shares, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares for Section 16 or any other purpose. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $145.98 to $146.94. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $146.99 to $147.73. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $148.04 to $148.94. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $149.05 to $149.96. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

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Form 4 Insider Transactions: What Each Field Means →

12/16/2025 - 04:10 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Shah Shardul

(Last)

(First)

(Middle)

C/O DATADOG, INC.

620 8TH AVENUE, 45TH FLOOR

(Street)

NEW YORK

10018

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Datadog, Inc. [ DDOG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	12/12/2025		S⁽¹⁾		1,310	D	$145.658⁽²⁾	355,223	I	By Trust⁽³⁾
Class A Common Stock	12/12/2025		S⁽¹⁾		4,406	D	$146.4386⁽⁴⁾	350,817	I	By Trust⁽³⁾
Class A Common Stock	12/12/2025		S⁽¹⁾		700	D	$147.4504⁽⁵⁾	350,117	I	By Trust⁽³⁾
Class A Common Stock	12/12/2025		S⁽¹⁾		500	D	$148.598⁽⁶⁾	349,617	I	By Trust⁽³⁾
Class A Common Stock	12/12/2025		S⁽¹⁾		900	D	$149.6244⁽⁷⁾	348,717	I	By Trust⁽³⁾
Class A Common Stock	12/12/2025		S⁽¹⁾		100	D	$150.1	348,617	I	By Trust⁽³⁾
Class A Common Stock								2,106	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Shares sold pursuant to a 10b5-1 plan dated June 13, 2025.

2. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $144.97 to $145.89. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

3. The shares are held by the 2019 Shah Family Trust, of which Reporting Person is Trustee. The Reporting Person disclaims Section 16 beneficial ownership of these shares, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares for Section 16 or any other purpose.

4. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $145.98 to $146.94. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

5. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $146.99 to $147.73. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

6. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $148.04 to $148.94. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

7. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $149.05 to $149.96. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

Remarks:

	/s/ Kerry Acocella, Attorney-in-Fact	12/16/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

What insider stock transaction did Datadog (DDOG) disclose in this Form 4?

The filing shows a Datadog, Inc. director reporting multiple sales of Class A common stock on December 12, 2025 executed by the 2019 Shah Family Trust.

How many Datadog shares were held after the reported transactions?

Following the reported sales, the 2019 Shah Family Trust held 348,617 shares of Datadog Class A common stock, reported as indirect beneficial ownership for the insider.

At what prices were the Datadog Class A shares sold on December 12, 2025?

The reported sales used weighted-average prices, with execution ranges from $144.97 to $149.96 per share across several blocks, plus one separate sale at $150.10 per share.

Who is reported as holding the Datadog shares involved in the transactions?

The shares are held by the 2019 Shah Family Trust, and the reporting person is identified as the trustee, with indirect beneficial ownership reported through the trust.

What does the Datadog insider say about beneficial ownership of these shares?

The reporting person disclaims Section 16 beneficial ownership of the trust-held shares, except to the extent of any pecuniary interest, and notes that the report should not be deemed an admission of beneficial ownership for any purpose.