Material Event (Form 8-K)

Item 8.01. Other Events.

On June 4, 2026, Chubb INA Holdings LLC (the "Company") agreed to sell in a public offering C$400,000,000 of 3.780% Senior Notes due 2031 (the "2031 Notes") and C$400,000,000 of 4.034% Senior Notes due 2033 (the "2033 Notes" and, together with the 2031 Notes, the "Notes"). The Notes will be fully and unconditionally guaranteed by Chubb Limited.

Attached as Exhibits 1.1 and 1.2 are copies of the underwriting agreement and terms agreement relating to such public offering. Attached as Exhibits 4.1, 4.2 and 4.3 are the form of officer's certificate establishing the Notes and the forms of the Notes. Attached as Exhibits 5.1 and 5.2 are certain opinions related to the Notes.