Was Julie Richardson’s Datadog (DDOG) share sale made under a Rule 10b5-1 plan?

Yes. A footnote states the shares were sold pursuant to a Rule 10b5-1 trading plan dated November 7, 2025. Such plans are established in advance, signaling the timing of the May 5, 2026 sale was pre-scheduled rather than a spontaneous market-timing decision.

Datadog (DDOG) director sells 502 shares under Rule 10b5-1 plan

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Datadog, Inc. director Julie Richardson sold shares in a planned trade. On May 5, 2026, she executed an open-market sale of 502 shares of Datadog Class A Common Stock at $150.00 per share. The transaction was carried out under a pre-arranged Rule 10b5-1 trading plan dated November 7, 2025, indicating it was scheduled in advance. Following this sale, Richardson directly holds 4,168 Datadog shares.

Insider Trade Summary 10b5-1

Net Seller: 502 shares ($75,300)

Net Sell 1 txn

Insider Richardson Julie

Role null

Sold 502 shs ($75K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	502	$150.00	$75K

Holdings After Transaction: Class A Common Stock — 4,168 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 502 shares Sale price: $150.00 per share Shares held after sale: 4,168 shares +1 more

4 metrics

Shares sold 502 shares Open-market sale of Class A Common Stock on May 5, 2026

Sale price $150.00 per share Price for the 502 shares sold on May 5, 2026

Shares held after sale 4,168 shares Direct Class A Common Stock holdings following the transaction

Net shares sold 502 shares Net-sell direction in transaction summary for this Form 4

Key Terms

Rule 10b5-1, open-market sale, Class A Common Stock, Form 4

4 terms

Rule 10b5-1 regulatory

"Shares sold pursuant to a 10b5-1 plan dated November 7, 2025."

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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.

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.

Form 4 Insider Transactions: What Each Field Means →

05/07/2026 - 04:31 PM

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^*

Richardson Julie

(Last)

(First)

(Middle)

C/O DATADOG, INC.

620 8TH AVENUE, 45TH FLOOR

(Street)

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)
05/05/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	05/05/2026		S⁽¹⁾		502	D	$150	4,168	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Shares sold pursuant to a 10b5-1 plan dated November 7, 2025.

Remarks:

	/s/ Kerry Acocella, Attorney-in-Fact	05/07/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What did Datadog (DDOG) director Julie Richardson do in this Form 4 filing?

Julie Richardson reported an open-market sale of 502 Datadog Class A Common Stock shares at $150.00 each. The sale was executed on May 5, 2026, and followed a pre-arranged Rule 10b5-1 trading plan dated November 7, 2025.

How many Datadog (DDOG) shares did Julie Richardson sell and at what price?

She sold 502 Datadog Class A Common Stock shares at $150.00 per share. This was a single open-market transaction, reported as a sale code “S” in the Form 4, reflecting a routine insider disposition under a pre-arranged trading plan.

How many Datadog (DDOG) shares does Julie Richardson hold after this transaction?

After the reported sale, Julie Richardson directly holds 4,168 Datadog Class A Common Stock shares. This post-transaction holding figure comes from the Form 4 and helps investors see the sale as a partial adjustment rather than a full exit from her position.

What type of security did Julie Richardson sell in Datadog (DDOG)?

She sold Datadog Class A Common Stock, which is the company’s publicly traded equity. The Form 4 lists this as a non-derivative security, meaning the transaction involved actual shares rather than options or other derivative instruments, and was reported as an open-market sale.