X0609 4/A 2026-07-22 2026-08-04 0 0001874252 Quantum Cyber N.V. QUCY 0001797586 Buffalino Louis R. false SUITE 400, 200 CONNECTICUT AVE NORWALK CT 06854 1 0 0 0 0 Stock Option (Right to Buy) 1.14 2026-07-22 4 A 0 425000 0 A 2036-08-03 Ordinary Shares 425000 425000 D The purpose of this Form 4/A is to correct the date of the reported transaction. The Stock Options will vest in eighteen substantially equal installments on each monthly anniversary of the date of grant, provided that the Reporting Person is providing services to the Issuer through the applicable vesting dates. /s/ Louis Buffalino 2026-08-06