144 0001704816 XXXXXXXX LIVE 0001513845 Nebius Group N.V. 001-35173 SCHIPHOL BOULEVARD 165 SCHIPHOL P7 1118BG 31202066970 Ryan Charles E Director NON EXECUTIVE DIRECTOR CLASS A ORDINARY SHARES CITIGROUP GLOBAL MARKETS

390 GREENWICH ST NEW YORK NY 10013

50000 12752000.00 271855218 08/14/2026 NASDAQ CLASS A ORDINARY SHARES 08/14/2026 AWARDS RSP NEBIUS GROUP NV N 50000 08/14/2026 COMPENSATION Y UNDER SECTION 3 D MARKET PRICE IS BASED ON CLOSING PRICE AUGUST 13 OF 255.04 . SHARES ARE BEING SOLD PURSUANT TO A 10B51 PLAN DATED MAY 15 2026 08/14/2026 05/15/2026 CONFORMED SIGNATURE ON FILE