Trust for Datadog (NASDAQ: DDOG) director sells 20,000 shares

Rhea-AI Filing Summary

Datadog director Amit Agarwal, through a family trust, converted 20,000 shares of Class B Common Stock into Class A and then sold 20,000 Class A shares in open-market transactions on March 16, 2026.

The sales, executed under a Rule 10b5-1 trading plan dated December 8, 2025, occurred at weighted-average prices around $126–$129 per share. After these trades, associated entities still hold substantial positions, including 603,464 and 53,063 Class B shares convertible into Class A, 6,541 Class A shares via a trust, and 27,999 Class A shares held directly.

Insider Trade Summary 10b5-1

Net Seller: 20,000 shares ($2,534,673)

Net Sell 9 txns

Insider Agarwal Amit

Role Director

Sold 20,000 shs ($2.53M)

Type	Security	Shares	Price	Value
Conversion	Class B Common Stock	20,000	$0.00	--
Conversion	Class A Common Stock	20,000	$0.00	--
Sale	Class A Common Stock	15,796	$126.338	$2.00M
Sale	Class A Common Stock	4,000	$128.1991	$513K
Sale	Class A Common Stock	204	$128.6365	$26K
holding	Class B Common Stock	--	--	--
holding	Class B Common Stock	--	--	--
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class B Common Stock — 550,059 shares (Indirect, By Trust); Class A Common Stock — 21,640 shares (Indirect, By Trust); Class A Common Stock — 27,999 shares (Direct)

Footnotes (1)

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. Shares are held directly by Agarwal 2018 Family Trust, of which the Reporting Person's spouse is Trustee. Shares sold pursuant to a 10b5-1 plan dated December 8, 2025. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $125.86 to $126.84. 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 $127.58 to $128.57. 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 $128.61 to $128.65. 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. Shares are held directly by Agarwal 2019 Family Trust, of which the Reporting Person's spouse is Trustee. Shares are held by Reporting Person's spouse.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Agarwal Amit

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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	03/16/2026		C(1)		20,000	A	$0	21,640	I	By Trust(2)
Class A Common Stock	03/16/2026		S(3)		15,796	D	$126.338(4)	5,844	I	By Trust(2)
Class A Common Stock	03/16/2026		S(3)		4,000	D	$128.1991(5)	1,844	I	By Trust(2)
Class A Common Stock	03/16/2026		S(3)		204	D	$128.6365(6)	1,640	I	By Trust(2)
Class A Common Stock								6,541	I	By Trust(7)
Class A Common Stock								27,999	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
Class B Common Stock	(1)	03/16/2026		C			20,000	(1)	(1)	Class A Common Stock	20,000	$0	550,059	I	By Trust(2)
Class B Common Stock	(1)							(1)	(1)	Class A Common Stock	603,464		603,464	I	By Trust(7)
Class B Common Stock	(1)							(1)	(1)	Class A Common Stock	53,063		53,063	I	By Spouse(8)

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 are held directly by Agarwal 2018 Family Trust, of which the Reporting Person's spouse is Trustee.

3. Shares sold pursuant to a 10b5-1 plan dated December 8, 2025.

4. Price reported is a weighted-average sales price. The shares were sold at prices ranging from $125.86 to $126.84. 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 $127.58 to $128.57. 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 $128.61 to $128.65. 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. Shares are held directly by Agarwal 2019 Family Trust, of which the Reporting Person's spouse is Trustee.

8. Shares are held by Reporting Person's spouse.

Remarks:

	/s/ Kerry Acocella, Attorney-in-Fact	03/18/2026
	** 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)

FAQ

What did Datadog (DDOG) director Amit Agarwal report in this Form 4?

Amit Agarwal reported a conversion and sale of Datadog shares. A family trust converted 20,000 Class B shares into Class A, then sold 20,000 Class A shares in open-market transactions on March 16, 2026, under a pre-arranged Rule 10b5-1 trading plan.

How many Datadog (DDOG) shares were sold in the reported transactions?

The trust sold 20,000 shares of Datadog Class A Common Stock. These shares were disposed of in three open-market transactions, with individual trade blocks of 15,796 shares, 4,000 shares, and 204 shares, all executed on March 16, 2026.

At what prices were the Datadog (DDOG) shares sold in this Form 4?

Shares were sold at weighted-average prices around $126–$129. Footnotes state sales occurred in ranges of $125.86–$126.84, $127.58–$128.57, and $128.61–$128.65 per share, with weighted-average prices of $126.3380, $128.1991, and $128.6365 respectively.

How many Datadog (DDOG) shares are still held after these transactions?

Associated holdings remain significant after the reported sales. Entities related to Amit Agarwal hold 603,464 and 53,063 Class B shares convertible into Class A, 6,541 Class A shares indirectly via a trust, and 27,999 Class A shares held directly, according to the holding entries.

What is the role of Class B Common Stock in this Datadog (DDOG) filing?

Class B shares are convertible into Class A on a one-for-one basis. The filing notes each Class B share can be converted at any time into one Class A share and has no expiration, with automatic conversion triggered by transfers, certain events, or a specified IPO anniversary.

Were the Datadog (DDOG) insider sales made under a trading plan?

Yes, the reported Datadog share sales used a Rule 10b5-1 plan. A footnote specifies that the transactions were executed pursuant to a 10b5-1 plan dated December 8, 2025, indicating the sales were pre-arranged rather than discretionary market-timing decisions.