Nebius Group: Arne Grimme buys shares at $169.99

A director's purchases were made under a Rule 10b5-1 trading plan adopted on June 15, 2026.

Rhea-AI Filing Summary

Nebius Group N.V. director Arne Grimme purchased 148 Class A shares on October 15, 2026, and another 148 on October 16, 2026, at $169.99 per share. Both purchases were made pursuant to a Rule 10b5-1 trading plan adopted on June 15, 2026. The issuer is identified as a foreign private issuer, and the remarks state that the reporting person's transactions are exempt from Sections 16(b) and 16(c) pursuant to Rule 3a12-3(b).

Insider Trade Summary 10b5-1

Net Buyer: 296 shares

Net Buy 2 txns

Insider Grimme Arne

Role Director

Bought 296 shs ($50K)

Type	Security	Shares	Price	Value
Purchase	Class A Shares F1	148	$169.99	$25K
Purchase	Class A Shares F1	148	$169.99	$25K

Holdings After Transaction: Class A Shares — 6,181 shares (Direct)

Footnotes (1)

1. F1. The purchases reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 15 June 2026.

Key Figures

Class A shares purchased: 148 shares Purchase price per share: $169.99 per share Class A shares purchased: 148 shares +1 more

4 metrics

Class A shares purchased 148 shares October 15, 2026

Purchase price per share $169.99 per share October 15, 2026

Class A shares purchased 148 shares October 16, 2026

Purchase price per share $169.99 per share October 16, 2026

Key Terms

Rule 10b5-1 trading plan, foreign private issuer, Sections 16(b) and 16(c)

3 terms

Rule 10b5-1 trading plan regulatory

"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.

foreign private issuer regulatory

"issuer's status as a foreign private issuer"

A foreign private issuer is a company organized outside the United States that meets tests showing it is primarily foreign-controlled and therefore qualifies for a different set of U.S. reporting rules. For investors, that means the company files less frequent or differently formatted disclosures with U.S. regulators and may follow home-country accounting and governance practices, so buying its stock is like dining at a well-reviewed restaurant that follows its home kitchen’s rules instead of the local menu — you get access but should check what standards apply.

Sections 16(b) and 16(c) regulatory

"exempt from Sections 16(b) and 16(c)"

FAQ

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

How many NBIS shares did Arne Grimme buy, and at what price?

Arne Grimme purchased 148 NBIS Class A shares on October 15, 2026, and another 148 on October 16, 2026, at $169.99 per share. Both purchases were made pursuant to a Rule 10b5-1 trading plan adopted on June 15, 2026.

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

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Available on EDGAR 10/16/2026 - 04:05 PM EDT Accepted by SEC EDGAR 10/16/2026 - 04:05 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^*

Grimme Arne

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/15/2026

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	10/15/2026		P		148(1)	A	$169.99	6,033	D
Class A Shares	10/16/2026		P		148(1)	A	$169.99	6,181	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 purchases reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on 15 June 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. Arne Grimme	10/16/2026
	** 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)