Datadog (DDOG) CFO reports 7,500-share gift and Class B-to-A conversion

Rhea-AI Filing Summary

Datadog, Inc. Chief Financial Officer David M. Obstler reported a mix of equity movements involving 7,500 shares of Class A and Class B Common Stock. He converted 7,500 shares of Class B Common Stock into 7,500 shares of Class A Common Stock in a derivative conversion coded "C" at a stated price of $0.00 per share.

He also made a bona fide gift of 7,500 shares of Class A Common Stock, coded "G", leaving him with 434,591 shares of Class A Common Stock held directly after the gift. Following the derivative conversion, he held 8,103 shares of Class B Common Stock directly.

Separately, indirect holdings are reported through two Obstler Children 2019 Trusts for his children, each holding Class B Common Stock that is convertible into an equal number of Class A shares. His spouse serves as trustee of these trusts, and each Class B share is convertible into one Class A share with no expiration date.

Insider Trade Summary

7,500 shares exercised/converted

Mixed 5 txns

Insider OBSTLER DAVID M

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Conversion	Class B Common Stock	7,500	$0.00	--
Conversion	Class A Common Stock	7,500	$0.00	--
Gift	Class A Common Stock	7,500	$0.00	--
holding	Class B Common Stock	--	--	--
holding	Class B Common Stock	--	--	--

Holdings After Transaction: Class B Common Stock — 8,103 shares (Direct, null); Class A Common Stock — 442,091 shares (Direct, null); Class B Common Stock — 46,199 shares (Indirect, By Trust)

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 Obstler Children 2019 Trust FBO the Reporting Person's child, of which the Reporting Person's spouse is Trustee. Obstler Children 2019 Trust FBO the Reporting Person's child and Obstler Children 2019 Trust FBO the Reporting Person's other child are separate trusts for the benefit of the Reporting Person's children with substantially identical terms. Shares are held directly by Obstler Children 2019 Trust FBO the Reporting Person's other child, of which the Reporting Person's spouse is Trustee. See Footnote 2.

Key Figures

Gifted shares: 7,500 shares Converted shares: 7,500 shares Direct Class A holding: 434,591 shares +3 more

6 metrics

Gifted shares 7,500 shares Bona fide gift of Class A Common Stock on 2026-06-12

Converted shares 7,500 shares Conversion of Class B into Class A on 2026-06-12

Direct Class A holding 434,591 shares Class A Common Stock held directly after transactions

Direct Class B holding 8,103 shares Class B Common Stock held directly after derivative conversion

Indirect derivative position (trust 1) 46,198 underlying shares Class B convertible into Class A, held by 2019 children’s trust

Indirect derivative position (trust 2) 46,199 underlying shares Class B convertible into Class A, held by second 2019 trust

Key Terms

bona fide gift, Conversion of derivative security, Class B Common Stock, Permitted Transfers, +1 more

5 terms

bona fide gift financial

"transaction_code_description": "Bona fide gift""

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

Conversion of derivative security financial

"transaction_code_description": "Conversion of derivative security""

Class B Common Stock financial

"Each share of Class B Common Stock is convertible at any time"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

Permitted Transfers regulatory

"except for certain "Permitted Transfers" as defined in the Issuer's amended"

amended and restated certificate of incorporation regulatory

"as defined in the Issuer's amended and restated certificate of incorporation"

A company’s amended and restated certificate of incorporation is an updated version of its foundational legal charter that replaces the older document and folds in all changes into one clear copy; it spells out corporate structure, classes of stock, shareholder rights and key governance rules. Investors care because it can change who controls the company, how votes are counted, what claims shareholders have on assets or dividends, and can introduce or remove protections against takeovers—like updating a house title after a major renovation to show who owns what and under what rules.

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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).

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^*

OBSTLER DAVID M

(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)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/12/2026

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	06/12/2026		C(1)		7,500	A	$0	442,091	D
Class A Common Stock	06/12/2026		G		7,500	D	$0	434,591	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)	06/12/2026		C(1)			7,500	(1)	(1)	Class A Common Stock	7,500	$0	8,103	D
Class B Common Stock	(1)							(1)	(1)	Class A Common Stock	46,199		46,199	I	By Trust(2)
Class B Common Stock	(1)							(1)	(1)	Class A Common Stock	46,198		46,198	I	By Trust(3)

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 Obstler Children 2019 Trust FBO the Reporting Person's child, of which the Reporting Person's spouse is Trustee. Obstler Children 2019 Trust FBO the Reporting Person's child and Obstler Children 2019 Trust FBO the Reporting Person's other child are separate trusts for the benefit of the Reporting Person's children with substantially identical terms.

3. Shares are held directly by Obstler Children 2019 Trust FBO the Reporting Person's other child, of which the Reporting Person's spouse is Trustee. See Footnote 2.

Remarks:

	/s/ Kerry Acocella, Attorney-in-Fact	06/16/2026
	** 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)

FAQ

What did Datadog (DDOG) CFO David Obstler report in this Form 4?

He reported a derivative conversion and a gift. David Obstler converted 7,500 Class B shares into 7,500 Class A shares, then made a bona fide gift of 7,500 Class A shares, while retaining a substantial direct and indirect ownership position.

How many Datadog (DDOG) shares did the CFO gift in this filing?

He gifted 7,500 shares of Class A Common Stock. The transaction is coded "G" for bona fide gift at a stated price of $0.00 per share, meaning it was a non-market transfer with no sale proceeds reported in this filing.

What is the Datadog (DDOG) CFO’s direct Class A shareholding after these transactions?

After the reported transactions, David Obstler directly holds 434,591 shares of Class A Common Stock. This figure reflects his position following the 7,500-share derivative conversion and the 7,500-share bona fide gift reported for the same date.

How do Datadog (DDOG) Class B shares held by trusts relate to Class A shares?

Each Class B share is convertible into one Class A share with no expiration date. The trusts for the CFO’s children hold Class B shares that can convert automatically upon certain transfers, the reporting person’s death, or a specified IPO anniversary event.

What indirect Datadog (DDOG) holdings are reported for the CFO in this Form 4?

Indirect holdings are reported through two Obstler Children 2019 Trusts. One trust holds Class B shares convertible into 46,198 Class A shares and the other into 46,199 Class A shares, with the CFO’s spouse serving as trustee for these children’s trusts.