Insider sale: Nebius (NASDAQ: NBIS) CRO sells 4,500 shares

Rhea-AI Filing Summary

Nebius Group N.V. Chief Revenue Officer Marc Boroditsky reported an open-market sale of 4,500 Class A Shares at an average price of $160.10 per share on April 15, 2026. After this transaction, he directly holds 42,162 Class A Shares.

The filing notes these sales were executed under a pre-arranged Rule 10b5-1 trading plan adopted on September 15, 2025, indicating the trades were scheduled in advance rather than timed discretionarily.

Insider Trade Summary 10b5-1

Net Seller: 4,500 shares ($720,450)

Net Sell 1 txn

Insider Boroditsky Marc

Role Chief Revenue Officer

Sold 4,500 shs ($720K)

Type	Security	Shares	Price	Value
Sale	Class A Shares	4,500	$160.10	$720K

Holdings After Transaction: Class A Shares — 42,162 shares (Direct)

Footnotes (1)

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Key Figures

Shares sold: 4,500 shares Sale price per share: $160.10 per share Shares held after transaction: 42,162 shares +3 more

6 metrics

Shares sold 4,500 shares Open-market sale on April 15, 2026

Sale price per share $160.10 per share Average price for Class A Shares sold

Shares held after transaction 42,162 shares Direct Class A holdings after sale

Net shares sold 4,500 shares Net-sell direction in transaction summary

Transaction date April 15, 2026 Date of reported open-market sale

10b5-1 plan adoption date September 15, 2025 Date trading plan was adopted

Key Terms

Rule 10b5-1 trading plan, open-market sale, Class A Shares, Form 4

4 terms

Rule 10b5-1 trading plan regulatory

"The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted..."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

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 Shares financial

"security_title": "Class A Shares""

Class A shares are one of a company’s distinct types of stock that come with a specific set of rights—commonly different voting power, dividend treatment, or transfer rules—defined in the company’s charter. Investors care because those rights affect control, income and resale value; like holding a seat at a table that has different rules or stronger chips than other seats, owning Class A changes how much influence and return you can expect.

Form 4 regulatory

"The sales reported on this Form 4 were made pursuant to a Rule 10b5-1..."

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 →

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^*

Boroditsky Marc

(Last) (First) (Middle)

SCHIPHOL BOULEVARD 165

(Street)

SCHIPHOL 1118BG

(City) (State) (Zip)

NETHERLANDS

(Country)

2. Issuer Name and Ticker or Trading Symbol
Nebius Group N.V. [ NBIS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/15/2026

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 Shares	04/15/2026		S		4,500(1)	D	$160.1	42,162	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. The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 15, 2025.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Anna Akimova, attorney-in-fact for Mr. Boroditsky	04/16/2026
	** 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 insider transaction did Nebius Group (NBIS) report for Marc Boroditsky?

Nebius Group reported that Chief Revenue Officer Marc Boroditsky sold 4,500 Class A Shares in an open-market transaction. The sale was disclosed in a Form 4 filing and reflects a routine insider trade rather than a change in company operations.

At what price did Marc Boroditsky sell Nebius Group (NBIS) shares?

Marc Boroditsky sold 4,500 Class A Shares at an average price of $160.10 per share. This per-share price gives a sense of the market level at which the pre-arranged trades under his Rule 10b5-1 plan were executed.

How many Nebius Group (NBIS) shares does Marc Boroditsky hold after the sale?

After the reported sale, Marc Boroditsky directly holds 42,162 Class A Shares of Nebius Group. This remaining stake shows he kept the large majority of his position despite the transaction disclosed in the Form 4 filing.

Was the Nebius Group (NBIS) insider sale under a Rule 10b5-1 plan?

Yes. The Form 4 states that the sales were made under a Rule 10b5-1 trading plan adopted on September 15, 2025. Such plans schedule trades in advance, reducing the significance of trade timing as a signal of insider sentiment.

Who is the insider involved in the latest Nebius Group (NBIS) Form 4?

The insider is Marc Boroditsky, Chief Revenue Officer of Nebius Group N.V. He reported an open-market sale of 4,500 Class A Shares, executed under a pre-arranged Rule 10b5-1 trading plan, and continues to directly own 42,162 shares after the trade.