A.M. Best has assigned Long-Term Issue Credit Ratings (Long-Term IR) of "a+" to Chubb INA Holdings Inc.'s (Chubb) recently announced EUR 900 million 1.55% Senior Unsecured Notes due 2028 and EUR 900 million 2.50% Senior Unsecured Notes due 2038. The notes are guaranteed by Chubb Limited (Zurich, Switzerland) [NYSE: CB]. The outlook assigned to the Credit Ratings (ratings) is stable. Following the senior unsecured notes issue, financial leverage and coverage measures will be supportive of the assigned ratings. Chubb intends to use the net proceeds of the offering to repay outstanding debt. This includes notes due in 2018 and 2019 and the redemption of the $1.0 billion aggregate principal amount of Directly Issued Subordinated Capital Securities with scheduled maturity in 2037. With these payments, including the payment of the March 2018 note, the next debt maturity is November 2020. Chubb's Long-Term Issuer Credit Rating of "a+," its existing Long-Term IRs and the ratings of its operating insurance subsidiaries are unchanged. This press release relates to Credit Ratings that have been published on A.M. Best's website. For all rating information relating to the release and pertinent disclosures, including details of the office responsible for issuing each of the individual ratings referenced in this release, please see A.M. Best's Recent Rating Activity web page. For additional information regarding the use and limitations of Credit Rating opinions, please view Understanding Best's Credit Ratings . For information on the proper media use of Best's Credit Ratings and A.M. Best press releases, please view Guide for Media - Proper Use of Best's Credit Ratings and A.M. Best Rating Action Press Releases . A.M. Best is the world's oldest and most authoritative insurance rating and information source. For more information, visit www.ambest.com. Copyright © 2018 by A.M. Best Rating Services, Inc. and/or its affiliates. ALL RIGHTS RESERVED.