Datadog (DDOG) CTO sells 53,912 shares under 10b5-1 trading plan

Rhea-AI Filing Summary

Datadog, Inc.’s Chief Technology Officer Alexis Le-Quoc reported a mix of stock sales and equity conversions. On March 10, 2026, he sold a total of 53,912 shares of Class A Common Stock in multiple open-market transactions under a Rule 10b5-1 trading plan dated June 13, 2025, at weighted-average prices generally between about $121.99 and $128.72 per share.

He also exercised and converted derivative securities covering 91,412 shares, including stock options with a $10.74 exercise price and Class B shares converting into Class A. Following these moves, he holds 456,555 Class A shares directly, plus 6,203,835 Class B shares and 169 Class A shares indirectly through the Alexis Le-Quoc Revocable Trust, with each Class B share convertible into one Class A share and no expiration date.

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
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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^*

Le-Quoc Alexis

(Last) (First) (Middle)

C/O DATADOG, INC.

620 8TH AVENUE, 45TH FLOOR

(Street)

NEW YORK NY 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
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

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)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	03/10/2026		C		43,224	A	(1)	480,481	D
Class A Common Stock	03/10/2026		C		10,688	A	(1)	491,169	D
Class A Common Stock	03/10/2026		S(2)		4,935	D	$122.5421(3)	486,234	D
Class A Common Stock	03/10/2026		S(2)		12,867	D	$123.3242(4)	473,367	D
Class A Common Stock	03/10/2026		S(2)		7,798	D	$124.4747(5)	465,569	D
Class A Common Stock	03/10/2026		S(2)		9,014	D	$125.5331(6)	456,555	D
Class A Common Stock	03/10/2026		S(2)		2,124	D	$126.3056(3)	454,431	D
Class A Common Stock	03/10/2026		S(2)		5,376	D	$127.6869(7)	449,055	D
Class A Common Stock	03/10/2026		S(2)		11,798	D	$128.5967(8)	437,257	D
Class A Common Stock								169	I	By Trust(9)

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
Stock Option (Right to Buy)	$10.74	03/10/2026		M			18,750	(10)	07/19/2029	Class B Common Stock	18,750	$0	243,750	D
Class B Common Stock	(1)	03/10/2026		M		18,750		(1)	(1)	Class A Common Stock	18,750	$10.74	2,695,064	D
Class B Common Stock	(1)	03/10/2026		C			53,912	(1)	(1)	Class A Common Stock	53,912	$0	2,641,152	D
Class B Common Stock	(1)							(1)	(1)	Class A Common Stock	6,203,835		6,203,835	I	By Trust(9)

Explanation of Responses:

1. Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon the earliest of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's amended and restated certificate of incorporation, (ii) the death of the Reporting Person in the case of shares held directly or in a trustee capacity, and (iii) the tenth anniversary of the Issuer's initial public offering of its Class A Common Stock.

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

3. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $121.99 to $122.98. 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.

4. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $123.00 to $123.98. 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.

5. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $124.00 to $124.96. 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 $126.04 to $127.03. 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 $127.05 to $128.01. 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 $128.13 to $128.72. 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. Shares are held by the Alexis Le-Quoc Revocable Trust.

10. Option is fully vested and exercisable.

Remarks:

	/s/ Kerry Acocella, Attorney-in-Fact	03/12/2026
	** 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.

FAQ

What did Datadog (DDOG) CTO Alexis Le-Quoc report on this Form 4?

Alexis Le-Quoc reported a combination of stock sales and equity conversions. He sold Class A shares in open-market trades and exercised or converted derivative securities, while maintaining substantial direct and trust-held positions in Datadog Class A and Class B stock.

How many Datadog shares did Alexis Le-Quoc sell in this filing?

He sold a total of 53,912 shares of Datadog Class A Common Stock. These were executed through seven open-market transactions at weighted-average prices generally ranging from about $121.99 to $128.72 per share, as detailed in the accompanying footnotes.

Were Alexis Le-Quoc’s Datadog share sales pre-planned under a 10b5-1 plan?

Yes. The filing states that the shares were sold pursuant to a Rule 10b5-1 trading plan dated June 13, 2025. Such plans are established in advance and are designed to automate trades, reducing the significance of trade timing as a discretionary decision.

What derivative securities did Alexis Le-Quoc exercise or convert in this Datadog Form 4?

He exercised and converted derivative securities relating to 91,412 shares. This includes exercising a fully vested stock option for 18,750 shares at a $10.74 exercise price and converting Class B Common Stock into Class A Common Stock in additional transactions reported as derivative conversions.

What are Alexis Le-Quoc’s Datadog holdings after these transactions?

After the reported transactions, he holds 456,555 shares of Class A Common Stock directly. Indirectly, through the Alexis Le-Quoc Revocable Trust, he holds 6,203,835 shares of Class B Common Stock and 169 shares of Class A Common Stock, with each Class B share convertible into one Class A share.

How does Datadog’s Class B Common Stock held by Alexis Le-Quoc behave relative to Class A shares?

Each share of Class B Common Stock is convertible at any time into one Class A share and has no expiration date. Class B shares automatically convert into Class A upon certain transfers, upon the reporting person’s death in specified cases, or on the tenth anniversary of Datadog’s initial public offering.