144 0002093081 XXXXXXXX LIVE 0001563411 CONSTELLIUM SE 001-35931 300 E. LOMBARD STREET SUITE 1710 BALTIMORE MD 21202 412-403-3233 Brandjes Michiel Director Ordinary Shares ING Bank NV

Bijlmerplein 888, Amsterdam P7 1102 MG

10400 336440 136150450 05/05/2026 NYSE Ordinary Shares 06/15/2018 Ordinary Shares Issuer N 10400 05/05/2026 Open Market Purchase Y 05/07/2026 /s/ MICHIEL BRANDJES