Nebius (NBIS)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Nebius Group N.V. (NBIS) CIK: 0001513845 --- Reporting Owner --- Name: Weigand Matthew Robert CIK: 0002083213 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Shares Date: 2026-09-01 | Code: A (Grant or award) Shares: +1,352 | Price: $0.00 Shares Owned After: 14,987 | Ownership: D (Direct) Footnotes: [F1] Represents restricted share units ("RSUs") granted on September 1, 2026 under the Company's Amended and Restated Equity Incentive Plan, as amended on August 15, 2024. The RSUs vest in full on January 2, 2027. Each RSU represents a right to receive one Class A Share of Nebius upon vesting. [F2] These holdings have been updated to reflect 9,102 Class A Shares of Nebius that have been distributed by various Accel-affiliated funds, in each case to the limited partners or members of the distributing entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares in accordance with the exemptions afforded by Rule 16a-13 of the Securities Exchange Act of 1934, as amended. --- Footnotes (Complete Index) --- F1: Represents restricted share units ("RSUs") granted on September 1, 2026 under the Company's Amended and Restated Equity Incentive Plan, as amended on August 15, 2024. The RSUs vest in full on January 2, 2027. Each RSU represents a right to receive one Class A Share of Nebius upon vesting. F2: These holdings have been updated to reflect 9,102 Class A Shares of Nebius that have been distributed by various Accel-affiliated funds, in each case to the limited partners or members of the distributing entity for no consideration, representing each limited partner's or member's pro-rata interest in such shares in accordance with the exemptions afforded by Rule 16a-13 of the Securities Exchange Act of 1934, as amended. --- Signature --- /s/ /s/ Anna Akimova, attorney-in fact for Mr. Weigand (2026-09-02)