144 0002060780 XXXXXXXX LIVE 0001513845 Nebius Group N.V. 001-35173 SCHIPHOL BOULEVARD 165 SCHIPHOL P7 1118 BG 31202066970 Volozh Arkadiy Officer Director 10% SHAREHOLDER CLASS A ORDINARY SHARES CITIGROUP GLOBAL MARKETS

390 GREENWICH ST NEW YORK NY 10013

38000 3831160.00 253282222 03/31/2026 NASDAQ CLASS A ORDINARY SHARES 03/31/2026 AWARDS RSP 2024 NEBIUS GROUP N V N 75000 03/31/2026 COMPENSATION N Volozh Arkadiy

SCHIPHOL BOULEVARD 165 SCHIPHOL P7 1118BG

ORDINARY SHARES 12/31/2025 37693 3194421.44 Under section 3 d market price is based on indicative market pricing--Shares being sold are pursuant to sell to cover transaction. 03/31/2026 CONFORMED SIGNATURE ON FILE