X0306 4 2020-12-10 0 0000896159 Chubb Ltd CB 0001162125 GREENBERG EVAN G THE CHUBB BUILDING 17 WOODBOURNE AVENUE HAMILTON D0 HM 08 BERMUDA 1 1 0 0 Chairman & CEO Common Shares 680478 D Common Shares 23321 I By Son's Trust Common Shares 48764 I By Daughter's Trust Options to Acquire Common Shares 73.35 2020-12-10 4 G 0 115542 0.00 D 2022-02-23 Common Shares 115542 1363 D Options to Acquire Common Shares 85.39 2020-12-10 4 G 0 142288 0.00 D 2023-02-28 Common Shares 142288 1171 D Options to Acquire Common Shares 96.76 2020-12-10 4 G 0 97148 0.00 D 2024-02-27 Common Shares 97148 1033 D Options to Acquire Common Shares 114.78 2020-12-10 4 G 0 101916 0.00 D 2025-02-26 Common Shares 101916 871 D Options to Acquire Common Shares 118.39 2020-12-10 4 G 0 98818 0.00 D 2026-02-25 Common Shares 98818 844 D Options to Acquire Common Shares 139.01 2020-12-10 4 G 0 84173 0.00 D 2027-02-23 Common Shares 84173 719 D Options to Acquire Common Shares 143.07 2020-12-10 4 G 0 81773 0.00 D 2028-02-22 Common Shares 81773 698 D Options to Acquire Common Shares 133.90 2020-12-10 4 G 0 91099 0.00 D 2029-02-28 Common Shares 91099 747 D The number of shares reported in Column 5 is the number of shares as of December 10, 2020 and does not take into account transactions reported on Forms 4 since the date of the transactions reported herein. This transaction involved a gift of securities to entities for which adult family members of the reporting person are beneficiaries. Options vested as follows: 1/3 on February 23, 2013, 1/3 on February 23, 2014 and 1/3 on February 23, 2015. Total does not include options from other tranches with different exercise prices, vesting and expiration dates. Options vested as follows: 1/3 on February 28, 2014, 1/3 on February 28, 2015 and 1/3 on February 28, 2016. Options vested as follows: 1/3 on February 27, 2015, 1/3 on February 27, 2016 and 1/3 on February 27, 2017. Options vested as follows: 1/3 on February 26, 2016, 1/3 on February 26, 2017 and 1/3 on February 26, 2018. Options vested as follows: 1/3 on February 25, 2017, 1/3 on February 25, 2018 and 1/3 on February 25, 2019. Options vested as follows: 1/3 on February 23, 2018, 1/3 on February 23, 2019 and 1/3 on February 23, 2020. Options vested as follows: 1/3 on February 22, 2019, 1/3 on February 22, 2020 and 1/3 on February 22, 2021. Options vested or will vest as follows: 1/3 on February 28, 2020, 1/3 on February 28, 2021 and 1/3 on February 28, 2022. /s/Samantha Froud, Attorney-in-fact 2021-10-28