Nebius (NBIS) completes acquisition of Eigen AI to expand AI cloud stack

Rhea-AI Filing Summary

Nebius Group N.V., an AI cloud company listed on Nasdaq, has completed its acquisition of Eigen AI, a leading inference and model optimization company. The deal was originally announced on May 1, 2026 and closed on June 10, 2026 after required regulatory approvals and customary conditions were satisfied.

The completion strengthens Nebius’s full-stack AI cloud platform, which supports data processing, model training and production deployment for startups and enterprises. The company states it is expanding its global footprint from its headquarters in Amsterdam, aiming to serve customers building AI products, agents and services worldwide.

Insights

Technology M&A analyst

Nebius adds an inference and optimization specialist to its AI cloud stack.

Nebius has closed its acquisition of Eigen AI, described as a leading inference and model optimization company. This targets a key layer of the AI stack where efficient deployment and serving of models is critical for real‑world applications.

The transaction, announced on May 1, 2026 and completed on June 10, 2026, followed required regulatory approvals and customary conditions. No purchase price or financial metrics are disclosed in this content, so the scale and financial impact of the deal cannot be assessed here.

Strategically, bringing inference and optimization technology in‑house may help Nebius deepen its full‑stack AI cloud offering for startups and enterprises. Future company filings and updates may clarify integration progress, commercial uptake of Eigen’s capabilities, and any quantified contribution to revenue or margins.

Key Figures

Announcement date: May 1, 2026 Completion date: June 10, 2026 Form type: Form 6-K +2 more

5 metrics

Announcement date May 1, 2026 Transaction originally announced

Completion date June 10, 2026 Acquisition of Eigen AI closed

Form type Form 6-K Report of Foreign Private Issuer

Form F-3ASR file number 333-286932 Registration statement referenced

Form S-8 file number 333-286934 Registration statement referenced

Key Terms

Report of Foreign Private Issuer, Form 6-K, inference and model optimization, Registration Statements on Form F-3ASR, +1 more

5 terms

Report of Foreign Private Issuer regulatory

"FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16"

A report of a foreign private issuer is a formal filing that a non‑U.S. company makes to U.S. regulators to share important business, financial, or governance information with American investors. Think of it as a regular update or press packet that keeps investors informed about events that could change a company’s value—like earnings, management changes, contracts, or regulatory developments—so investors can make timely, informed decisions.

Form 6-K regulatory

"Furnished as Exhibit 99.1 to this Report on Form 6-K is a press release"

A Form 6-K is a report that companies listed in certain countries file to provide important updates, such as financial results, corporate changes, or other significant information, to regulators and investors. It functions like an official company update or news release, helping investors stay informed about developments that could affect their investment decisions.

inference and model optimization technical

"Eigen AI, a leading inference and model optimization company"

Registration Statements on Form F-3ASR regulatory

"incorporated by reference into the Company’s Registration Statements on Form F-3ASR"

Form S-8 regulatory

"Registration Statements on Form F-3ASR and Form S-8"

A Form S-8 is a U.S. Securities and Exchange Commission registration that lets a public company set aside shares for employee benefit plans and stock-based compensation. Think of it as opening a dedicated account that authorizes the company to issue or reserve stock for workers and directors; it matters to investors because it enables share dilution when those awards are granted or exercised and signals how management is compensated and incentivized.

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Form 6-K: How Foreign Companies Report to the SEC →

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

June 16, 2026

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 ¨

Furnished as Exhibit 99.1 to this Report on Form 6-K is a press release of Nebius Group N.V. (the “Company”) dated June 16, 2026, announcing the closing of the acquisition of MagicByte, Inc. (d/b/a Eigen AI Labs) by the Company.

INCORPORATION BY REFERENCE

Exhibit 99.1 to 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 release of Nebius Group N.V. dated June 16, 2026, announcing the closing of the acquisition of MagicByte, Inc. (d/b/a Eigen AI Labs) by the Company.

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: June 16, 2026	By:	/s/ NATHALIE VAN WIGGEN
		Nathalie van Wiggen
		Company Secretary

Exhibit 99.1

Tripolis Park,
Burgerweeshuispad 101,
1076 ES Amsterdam

Nebius completes acquisition of Eigen AI

Amsterdam, June 16, 2026 — Nebius (Nasdaq: NBIS), the AI cloud company, today announced the closing of its acquisition of Eigen AI, a leading inference and model optimization company.

The transaction was announced on May 1, 2026, and completed on June 10, 2026, following receipt of the required regulatory approvals and satisfaction of other customary closing conditions.

About Nebius

Nebius, the AI cloud company, is building the full-stack platform for developers and companies to take charge of their AI future — from data and model training to production deployment. Founded on deep in-house technological expertise and operating at scale with a rapidly expanding global footprint, Nebius serves startups and enterprises building AI products, agents and services worldwide.

Nebius is listed on Nasdaq (Nasdaq: NBIS) and headquartered in Amsterdam.

For more information please visit www.nebius.com.

Media kit www.nebius.com/media-kit.

Contacts

Media relations: media@nebius.com

Investor relations: askIR@nebius.com

FAQ

What did Nebius Group (NBIS) announce in its latest Form 6-K?

Nebius Group announced it has completed the acquisition of Eigen AI, a leading inference and model optimization company. The transaction strengthens Nebius’s AI cloud platform, which serves startups and enterprises building AI products, agents and services worldwide from its Amsterdam headquarters.

When did Nebius (NBIS) complete its acquisition of Eigen AI?

Nebius completed the acquisition of Eigen AI on June 10, 2026, after receiving required regulatory approvals and satisfying customary closing conditions. The transaction had been previously announced on May 1, 2026, and is now confirmed as closed in the company’s Form 6-K filing.

Who is Eigen AI, the company acquired by Nebius Group (NBIS)?

Eigen AI, acquired by Nebius Group, is described as a leading inference and model optimization company. Its technology focuses on efficiently running and optimizing AI models, which complements Nebius’s full-stack AI cloud platform spanning data handling, training and production deployment for global customers.

How does the Eigen AI acquisition fit Nebius Group’s (NBIS) strategy?

The acquisition supports Nebius’s strategy to build a full-stack AI cloud platform, from data and training to deployment. By adding Eigen AI’s inference and optimization capabilities, Nebius aims to better serve startups and enterprises developing AI products, agents and services across its expanding global footprint.

Did Nebius (NBIS) disclose financial terms of the Eigen AI acquisition?

The provided content does not disclose financial terms of the Eigen AI acquisition. The Form 6-K and accompanying press release focus on confirming the closing date, regulatory approvals and strategic fit with Nebius’s AI cloud platform, without detailing purchase price or revenue contribution figures.

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 EXHIBIT 99.1 5.1 KB