144 0001162125 XXXXXXXX LIVE 0000896159 Chubb Ltd 001-11778 1133 Avenue of the Americas New York NY 10036 441-526-6319 Greenberg CH Dynasty LLC (Evan Greenberg) Officer Director Common UBS Financial Services Inc

1000 Harbor Blvd 3rd Floor Weehawken NJ 07086

15060 5000603.57 393000000 05/19/2026 NYSE Common 12/15/2025 RSUs Evan Greenberg N 15060 12/15/2025 no payment N Incomplete Gift Investment LLC

81 Maple Ave Katonah NY 10536

Common 05/19/2026 15060 5000250 Greenberg CH Dynasty LLC is the seller. Evan Greenberg is the sole managing member of Greenberg CH Dynasty LLC. Evan Greenberg is the CEO of Chubb Ltd. 05/19/2026 /s/Mijo Suric, for UBS Financial Services Inc, as attorney-in-fact for Greenberg CH Dynasty LLC (Evan Greenberg)