安达保险美股招股说明书(2026-06-05版)

Chubb INA Holdings LLC C$400,000,000 3.780% Senior Notes due 2031C$400,000,000 4.034% Senior Notes due 2033Fully and Unconditionally Guaranteed by Chubb Limited Chubb INA Holdings LLC (“Chubb INA”) is offering C$400,000,000 aggregate principal amount ofits3.780% Senior Notes due 2031 (the “2031 Notes”), and C$400,000,000 aggregate principal amount of its4.034% Senior Notes due 2033 (the “2033 Notes” and, together with the 2031 Notes, the “Notes”). The 2031Notes will bear interest at the rate of 3.780% per year, and the 2033 Notes will bear interest at the rate of4.034%per year. Interest on the Notes of each series is payable semi-annually on June10 and December10 of each year,beginning December10, 2026. The 2031 Notes will mature on June 10, 2031. The 2033 Notes will mature onJune10, 2033. Chubb INA may redeem some or all of the Notes of either series at any time and from time to timeat the applicable redemption price discussed under the caption “Description of the Notes and Guarantee —Optional Redemption.” In addition, Chubb INA may redeem all, but not less than all, of the Notes of either seriesunder the circumstances described under “Description of the Notes and Guarantee — Redemption for TaxReasons.” The Notes of each series will be issued only in registered form in denominations of C$2,000 andintegral multiples of C$1,000 in excess thereof. The Notes will be unsecured and rank equally in right of payment with all of Chubb INA’s other unsecuredsenior indebtedness from time to time outstanding. The Notes will be fully and unconditionally guaranteed on asenior unsecured basis by Chubb Limited, the ultimate parent corporation of Chubb INA. The Notes of each series are a new issue of securities with no established trading market. The Notes will notbe listed on any securities exchange or on any automated dealer quotation system. (1)Plus accrued interest, if any, from June10, 2026 to date of delivery. Neither the Securities and Exchange Commission (the “SEC”) nor any state or provincial securitiescommission has approved or disapproved of these securities or determined if this prospectus supplement or theaccompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense. The underwriters expect to deliver the Notes of each series to purchasers in fully registered, book-entry formonly through the facilities of CDS Clearing and Depository Services Inc. (“CDS”) for the accounts of itsparticipants, on or about June10, 2026, against payment in immediately available funds. Purchasers mayholdtheir notes outside Canada through Clearstream Banking S.A. (“Clearstream”) or Euroclear BankS.A./N.V.(“Euroclear” and, together with CDS and Clearstream, the “clearing systems”). Joint Book-Running Managers RBC Capital Markets Scotiabank TABLE OF CONTENTS Prospectus Supplement PageForward-Looking StatementsS-1Prospectus Supplement SummaryS-3Risk FactorsS-10Use of ProceedsS-15Capitalization of ChubbS-16Description of the Notes and GuaranteeS-18Certain Tax ConsequencesS-27UnderwritingS-33Legal MattersS-38Where You Can Find More InformationS-38 Prospectus PageAbout This Prospectus1Chubb Limited3Chubb INA5The Chubb Trusts5Use of Proceeds6General Description of the Offered Securities6Description of Chubb Common Shares6Description of Chubb INA Debt Securities and Chubb Guarantee13Description of the Warrants to Purchase Common Shares28Description of Preferred Securities29Description of Preferred Securities Guarantees38Plan of Distribution43Legal Opinions45Experts45Enforcement of Civil Liabilities Under United States Federal Securities Laws45Where You Can Find More Information46 No person is authorized to give any information or to make any representations other than thosecontained or incorporated by reference into this prospectus supplement, the accompanying prospectus or anyfree writing prospectus that we have authorized and, if given or made, such information or representationsmust not be relied upon as having been authorized. This prospectus supplement, the accompanyingprospectus and any free writing prospectus do not constitute an offer to sell or a solicitation of an offer tobuy any securities other than the securities described in this prospectus supplement or an offer to sell or asolicitation of an offer to buy such securities in any circumstances in which such offer or solicitation isunlawful. Neither the delivery of this prospectus supplement, the accompanying prospectus or any freewriting prospectus, nor any sale made hereunder and thereunder, shall, under any circumstances, create anyimplication that there has been no change in the affairs of Chubb INA or Chubb Limited since the date ofthis prospectus supplement, the accompanying prospectus or any free writing prospectus or that theinformation contained or incorporated by reference herein or therein is accurate as of any time subsequent tothe date of such information. Our business, financial condition, results of operat