Datadog director gifts 2,500 shares to charity

Datadog, Inc. director Michael James Callahan reported a bona fide gift of 2,500 shares of Class A Common Stock.

Rhea-AI Filing Summary

Datadog, Inc. director Michael James Callahan reported a bona fide gift of 2,500 shares of Class A Common Stock. The shares were donated to a donor-advised fund, which will use them for charitable purposes, and were held through The Callahan-Thernstrom Family Trust, where he is trustee.

After the gift, the trust holds 14,996 Class A shares indirectly. A separate holding entry in the filing shows 19,612 Class A shares held directly following the reported transactions. The gift is a non-market, no‑consideration transfer rather than an open-market sale.

Insider Trade Summary

2,500 shares gifted

Gift 2 txns

Insider Callahan Michael James

Role Director

Type	Security	Shares	Price	Value
Gift	Class A Common Stock	2,500	$0.00	$0.00
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 14,996 shares (Indirect, By Trust); Class A Common Stock — 19,612 shares (Direct)

Footnotes (2)

1. F1. Shares donated to a donor-advised fund, which will use the gifted shares for charitable purposes.
2. F2. The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Key Figures

Gifted shares: 2,500 shares Trust holdings after gift: 14,996 shares Direct holdings entry: 19,612 shares +1 more

4 metrics

Gifted shares 2,500 shares Class A Common Stock donated as bona fide gift

Trust holdings after gift 14,996 shares Class A Common Stock held indirectly by family trust

Direct holdings entry 19,612 shares Class A Common Stock held directly following transactions

Gift price per share $0.0000 per share No consideration for bona fide gift transfer

Key Terms

bona fide gift, donor-advised fund, Class A Common Stock, indirect ownership, +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.

donor-advised fund financial

"Shares donated to a donor-advised fund, which will use the gifted shares"

A donor-advised fund is a charitable giving account that lets an individual or family deposit cash, stock, or other assets now, get an immediate tax benefit, and then recommend grants to charities over time. Think of it like a private charitable bucket you control without running a charity yourself; investors care because it’s a tax-efficient way to give appreciated securities, can change when and how donated shares enter the market, and affects personal and corporate tax planning.

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.

indirect ownership financial

"direct_or_indirect: I, nature_of_ownership: By Trust"

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did Datadog (DDOG) report for Michael James Callahan?

Datadog reported that director Michael James Callahan made a bona fide gift of 2,500 shares of Class A Common Stock. The transfer was a charitable donation, not an open-market trade, and therefore carries limited signaling value about his view of the stock.

Who received the 2,500 Datadog (DDOG) shares gifted by Michael James Callahan?

The 2,500 Datadog shares were donated to a donor-advised fund for charitable purposes. These funds typically sell donated securities over time to support charities, meaning the transfer primarily reflects Callahan’s philanthropy rather than a conventional investment transaction.

How are Michael James Callahan’s Datadog (DDOG) shares held after the reported gift?

After the gift, The Callahan-Thernstrom Family Trust holds 14,996 Datadog Class A shares indirectly, with Callahan as trustee. A separate holding entry shows 19,612 Class A shares held directly, giving investors a clearer picture of his remaining reported equity position.

How is the Callahan-Thernstrom Family Trust involved in Datadog (DDOG) share ownership?

The Callahan-Thernstrom Family Trust holds Datadog Class A shares indirectly, with Michael James Callahan serving as trustee. The 2,500-share gift came from this trust, which retained 14,996 shares afterward, highlighting that part of his reported stake is managed through this family trust.

Does the Datadog (DDOG) Form 4 show any open-market buys or sells by Michael James Callahan?

The Form 4 does not show any open-market purchases or sales by Michael James Callahan. It reports a bona fide gift of 2,500 Class A shares and a holding entry, indicating this filing mainly documents a charitable transfer and resulting share balances.

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

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Accepted by SEC EDGAR 05/19/2026 - 04:50 PM EDT 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).

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^*

Callahan Michael James

(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)
05/15/2026

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	05/15/2026		G(1)		2,500	D	$0	14,996	I	By Trust(2)
Class A Common Stock								19,612	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 donated to a donor-advised fund, which will use the gifted shares for charitable purposes.

2. The Shares are held by The Callahan-Thernstrom Family Trust, of which Reporting Person is Trustee.

Remarks:

	/s/ Kerry Acocella, Attorney-in-Fact	05/19/2026
	** 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)