CB: Other company developments

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. Item 9.01. Financial Statements and Exhibits. (d) Exhibits. EXHIBIT INDEX Number Description Method of Filing 1.1* Underwriting Agreement, dated as of June 4, 2026, between Chubb INA Holdings LLC, Chubb Limited and the underwriters named in the related terms agreement Filed herewith 1.2* Terms Agreement, dated as of June 4, 2026, among Chubb INA Holdings LLC, Chubb Limited, RBC Dominion Securities Inc., Scotia Capital Inc. and TD Securities Inc. Filed herewith 4.1* Form of Officer’s Certificate related to the 3.780% Senior Notes due 2031 and the 4.034% Senior Notes due 2033 Filed herewith 4.2 Form of Global Note for the 3.780% Senior Notes due 2031 Filed herewith 4.3 Form of Global Note for the 4.034% Senior Notes due 2033 Filed herewith 5.1 Opinion of Bär & Karrer AG Filed herewith 5.2 Opinion of Willkie Farr & Gallagher LLP Filed herewith 23.1 Consent of Bär & Karrer AG Included in Exhibit 5.1 23.2 Consent of Willkie Farr & Gallagher LLP Included in Exhibit 5.2 104 Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document) * Certain