UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

~~October~~November 2212, 2025

NEBIUS GROUP N.V.

Schiphol Boulevard 165

1118 BG, Schiphol, the Netherlands.

Tel: +31 202 066 970

(Address, Including ZIP Code, and Telephone Number,

Including Area Code, of Registrant’s Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x Form 40-F o ¨

~~Furnished~~INCORPORATION asBY Exhibit 99.1 to this Report on Form 6-K is a press release of Avride Group, Inc., a subsidiary of Nebius Group N.V., dated October 22, 2025, announcing a strategic investment and other commitments of up to $375 million backed by Uber and Nebius.REFERENCE

This Report on Form 6-K is hereby incorporated by reference into the Company’s Registration Statements on Form F-3ASR (File No. 333-286932) and Form S-8 (File No. 333-286934), including any prospectuses forming a part of such Registration Statements, to the extent not superseded by documents or reports subsequently filed or furnished.

INDEX TO EXHIBITS

Exhibit No.	Description
99.1	~~Press~~Equity ~~release~~Distribution ofAgreement ~~Avride~~dated ~~Group~~November 12, ~~Inc.~~2025, abetween ~~subsidiary~~the ofCompany ~~Nebius~~and ~~Group~~Goldman ~~N.V.,~~Sachs ~~dated~~& ~~October~~Co. 22LLC, ~~2025,~~Morgan ~~announcing~~Stanley a& ~~strategic~~Co. ~~investment~~LLC, ~~and~~BofA ~~other~~Securities, ~~commitments~~Inc., ofand upCitigroup toGlobal ~~$375~~Markets ~~million~~Inc. ~~backed~~as ~~by Uber and Nebius~~managers.
99.2	Opinion of Warendorf
99.3	Consent of Warendorf (included in Exhibit 99.2)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	NEBIUS GROUP N.V.
Date: October 22, 2025	By:	/s/ BOAZ TAL
Date: November 12, 2025	By:	/s/ BOAZ TAL
		Boaz Tal
		General Counsel

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