X0609 4 2026-04-06 0001513845 Nebius Group N.V. NBIS 0002115814 Korolenko Andrey true SCHIPHOL BOULEVARD 165 SCHIPHOL P7 1118BG NETHERLANDS 1 Chief Infrastructure Officer 0 Class A Shares 2026-04-06 4 S 0 31357 111.2002 D 585209 D The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 2, 2025. /s/ Anna Akimova, attorney-in fact for Mr. Korolenko 2026-04-08