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

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49504 4415261.00 238108831 09/12/2025 NASDAQ CLASS A ORDINARY SHARES 07/05/2016 ACQUIRED AS COMPENSATION RESTRICTED STOCK AWARDS NEBIUS GROUP NV N 49504 09/12/2025 COMPENSATION Y UNDER SECTION 3 D MARKET PRICE IS BASED ON CLOSING PRICE SEP 11 25 OF 89.19 SHARES ARE BEING SOLD PURSUANT TO A 10B51 PLAN DATED JUNE 13 25 UNDER SECURITIES TO BE SOLD THE PLANS ARE FROM 2015 2016 2017 AND 2019 09/12/2025 06/13/2025 CONFORMED SIGNATURE ON FILE