144 0002096831 XXXXXXXX LIVE 0001513845 NEBIUS GROUP N.V. 001-35173 Schiphol Boulevard 165 Schiphol P7 1118 BG 31202066970 JOHN W BOYNTON TTEE THE JOHN W BOYNTON IV TR OF 2006 Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

5812 1350476.32 219465088 06/15/2026 NASDAQ Common 01/03/2025 Restricted Stock Units Issuer N 5812 01/03/2025 N/A Y 06/15/2026 03/06/2026 /s/ John W Boyton