Nebius Group: Marc Boroditsky sells 7,000 shares

The chief revenue officer reported 336,000 stock options after exercising options that vested in quarterly installments beginning May 31, 2026.

Rhea-AI Filing Summary

Nebius Group N.V.'s Chief Revenue Officer Marc Boroditsky exercised options for 7,000 Class A shares on October 12, 2026, at a $40 exercise price, and sold 7,000 shares at $211.23 per share that day. The sale was made pursuant to a Rule 10b5-1 trading plan adopted June 15, 2026.

Insider Trade Summary 10b5-1

Exercise and Sale: 7,000 shares ($1.20M approx. pre-tax spread)

Exercise and Sale 3 txns

Insider Boroditsky Marc

Role Chief Revenue Officer

Sold 7,000 shs ($1.48M)

Approx. gross sale proceeds $1.48M

Approx. exercise cost $280K

Approx. pre-tax spread $1.20M

Type	Security	Shares	Price	Value
Exercise	Stock Options F2	7,000	$0.00	$0.00
Exercise	Class A Shares	7,000	$0.00	$0.00
Sale	Class A Shares F1	7,000	$211.23	$1.48M

Holdings After Transaction: Stock Options — 336,000 contracts (Direct); Class A Shares — 0 shares (Direct)

Footnotes (2)

1. F1. The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 15 June 2026.
2. F2. The options vested in quarterly installments beginning on 31 May 2026.

Key Figures

Options exercised: 7,000 options Exercise price: $40 per share Class A shares sold: 7,000 shares +2 more

5 metrics

Options exercised 7,000 options Exercise on October 12, 2026

Exercise price $40 per share Options exercised on October 12, 2026

Class A shares sold 7,000 shares Sale on October 12, 2026

Sale price $211.23 per share Sale on October 12, 2026

Stock options following exercise 336,000 options Position reported after the October 12, 2026 transaction

Key Terms

Rule 10b5-1 trading plan, quarterly installments, exercise price

3 terms

Rule 10b5-1 trading plan regulatory

"sales were made pursuant to a Rule 10b5-1 trading plan"

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.

quarterly installments financial

"options vested in quarterly installments"

exercise price financial

"options exercised at a $40 exercise price"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

FAQ

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

How many NBIS shares did Marc Boroditsky sell, and at what price?

Marc Boroditsky, Nebius Group N.V.'s Chief Revenue Officer, sold 7,000 Class A shares at $211.23 per share on October 12, 2026. The sale was made under a Rule 10b5-1 trading plan adopted June 15, 2026.

How many NBIS stock options remained after Marc Boroditsky exercised options?

Marc Boroditsky reported 336,000 stock options following the exercise. The options vested in quarterly installments beginning May 31, 2026.

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

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Available on EDGAR 10/13/2026 - 04:06 PM EDT Accepted by SEC EDGAR 10/13/2026 - 04:06 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).

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)

BURGERWEESHUISPAD 101

(Street)

AMSTERDAM 1076 ER

(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)
10/12/2026

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 Shares	10/12/2026		M		7,000	A	$0	7,000	D
Class A Shares	10/12/2026		S		7,000(1)	D	$211.23	0	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
Stock Options	$40	10/12/2026		M			7,000(2)	05/31/2026	06/01/2035	Class A Shares	7,000	$0	336,000	D

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 15 June 2026.

2. The options vested in quarterly installments beginning on 31 May 2026.

Remarks:

Due to the issuer's status as a foreign private issuer pursuant to Rule 3a12-3(b) under the Act, the reporting person's transactions in the issuer's equity securities are exempt from Sections 16(b) and 16(c) of the Act.

	/s/ Anna Akimova, attorney-in-fact for Mr. Boroditsky	10/13/2026
	** 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)