Datadog counsel sells 5,280 shares in plan trade

Rhea-AI Filing Summary

Datadog, Inc. (DDOG) reported that General Counsel and Secretary Kerry Acocella sold a total of 5,280 shares of Class A Common Stock on September 14, 2026 in a series of open-market or private transactions under a Rule 10b5-1 trading plan dated December 11, 2025, at weighted-average prices in the low-$220s to low-$230s per share.

Insider Trade Summary 10b5-1

Net Seller: 5,280 shares

Net Sell 10 txns

Insider Acocella Kerry

Role General Counsel and Secretary

Sold 5,280 shs ($1.21M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2	200	$221.6285	$44K
Sale	Class A Common Stock F1, F3	300	$222.8033	$67K
Sale	Class A Common Stock F1, F4	400	$224.3175	$90K
Sale	Class A Common Stock F1, F5	409	$225.3354	$92K
Sale	Class A Common Stock F1, F6	191	$226.3243	$43K
Sale	Class A Common Stock F1, F7	600	$228.8934	$137K
Sale	Class A Common Stock F1, F8	1,156	$229.8443	$266K
Sale	Class A Common Stock F1, F9	1,024	$230.8722	$236K
Sale	Class A Common Stock F1, F10	900	$232.5087	$209K
Sale	Class A Common Stock F1	100	$233.37	$23K

Holdings After Transaction: Class A Common Stock — 115,243 shares (Direct)

Footnotes (10)

1. F1. Shares sold pursuant to a 10b5-1 plan dated December 11, 2025.
2. F2. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $221.27 to $221.98. 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. F3. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $222.38 to $223.22. 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.
4. F4. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $223.92 to $224.45. 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. F5. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $225.02 to $225.96. 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.
6. F6. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $226.21 to $226.45. 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. F7. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $228.31 to $229.3. 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.
8. F8. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $229.5 to $230.12. 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.
9. F9. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $230.55 to $231.42. 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.
10. F10. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $232.07 to $233.06. 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.

Key Figures

Shares sold: 5,280 shares Weighted-average sale price (example 1): $221.6285 per share Weighted-average sale price (example 2): $232.5087 per share +3 more

6 metrics

Shares sold 5,280 shares Aggregate Class A Common Stock sales reported for September 14, 2026

Weighted-average sale price (example 1) $221.6285 per share 200-share sale on September 14, 2026; prices ranged from $221.27 to $221.98

Weighted-average sale price (example 2) $232.5087 per share 900-share sale on September 14, 2026; prices ranged from $232.07 to $233.06

Number of sale transactions 10 transactions Separate non-derivative sale entries on September 14, 2026

Rule 10b5-1 plan date December 11, 2025 Date of trading plan under which the reported sales were made

Highest reported weighted-average price $233.37 per share 100-share sale of Class A Common Stock on September 14, 2026

Key Terms

Rule 10b5-1 plan, weighted-average sales price, Class A Common Stock, open market or private transaction

4 terms

Rule 10b5-1 plan regulatory

"Shares sold pursuant to a 10b5-1 plan dated December 11, 2025."

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

weighted-average sales price financial

"Price reported is a weighted-average sales price."

Class A Common Stock financial

"security title: Class A Common Stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

open market or private transaction financial

"Sale in open market or private transaction"

FAQ

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

What insider trading activity did Datadog (DDOG) report for Kerry Acocella?

Datadog reported that General Counsel and Secretary Kerry Acocella sold 5,280 shares of Class A Common Stock on September 14, 2026 in multiple open-market or private transactions at weighted-average prices between the low-$220s and low-$230s per share.

Was the DDOG insider sale by Kerry Acocella under a Rule 10b5-1 plan?

Yes. The filing states the shares were sold pursuant to a 10b5-1 plan dated December 11, 2025, indicating the trades were made under a pre-arranged trading plan rather than being timed at discretion.

How many Datadog (DDOG) shares did Kerry Acocella sell on September 14, 2026?

Kerry Acocella sold an aggregate of 5,280 shares of Datadog Class A Common Stock on September 14, 2026, reported across ten separate sale transactions in the Form 4 filing.

What prices were reported for Kerry Acocella’s Datadog (DDOG) share sales?

Reported weighted-average sale prices ranged from about $221.63 to $233.37 per share, with footnotes explaining that each figure is a weighted-average and that actual sale prices within each transaction ranged over specified price intervals.

Did the Datadog (DDOG) Form 4 include any derivative exercises for Kerry Acocella?

No. The Form 4 reports only non-derivative sales of Class A Common Stock. The derivative summary shows no option or other derivative exercises reported in this filing.

Does the DDOG Form 4 disclose Kerry Acocella’s holdings after the September 14, 2026 sales?

No post-transaction share balance is listed for these sales. The transaction rows leave the “shares following transaction” field blank, so the filing does not state Kerry Acocella’s remaining holdings after the reported trades.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/16/2026 - 04:39 PM Accepted by SEC EDGAR 09/16/2026 - 04:38 PM Learn about SEC filing dates

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).

X

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^*

Acocella Kerry

(Last) (First) (Middle)

C/O DATADOG, INC.

620 8TH AVENUE, 45TH FLOOR

(Street)

NEW YORK NEW YORK 10018

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel and Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/14/2026

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

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

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

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)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	09/14/2026		S(1)		200	D	$221.6285(2)	120,323	D
Class A Common Stock	09/14/2026		S(1)		300	D	$222.8033(3)	120,023	D
Class A Common Stock	09/14/2026		S(1)		400	D	$224.3175(4)	119,623	D
Class A Common Stock	09/14/2026		S(1)		409	D	$225.3354(5)	119,214	D
Class A Common Stock	09/14/2026		S(1)		191	D	$226.3243(6)	119,023	D
Class A Common Stock	09/14/2026		S(1)		600	D	$228.8934(7)	118,423	D
Class A Common Stock	09/14/2026		S(1)		1,156	D	$229.8443(8)	117,267	D
Class A Common Stock	09/14/2026		S(1)		1,024	D	$230.8722(9)	116,243	D
Class A Common Stock	09/14/2026		S(1)		900	D	$232.5087(10)	115,343	D
Class A Common Stock	09/14/2026		S(1)		100	D	$233.37	115,243	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Shares sold pursuant to a 10b5-1 plan dated December 11, 2025.

2. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $221.27 to $221.98. 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. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $222.38 to $223.22. 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.

4. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $223.92 to $224.45. 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 $225.02 to $225.96. 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.

6. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $226.21 to $226.45. 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 $228.31 to $229.3. 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.

8. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $229.5 to $230.12. 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.

9. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $230.55 to $231.42. 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.

10. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $232.07 to $233.06. 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	09/16/2026
	** 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.
* Form 4: SEC 1474 (03-26)