X0306 4 2021-05-20 0 0000896159 Chubb Ltd CB 0001197209 BURKE SHEILA P CHUBB BUILDING 17 WOODBOURNE AVE. HAMILTON D0 HM 08 BERMUDA 1 0 0 0 Common Shares 2021-05-20 4 A 0 1083 A 6758 D Common Shares 2021-05-20 4 F 0 431 166.16 D 6327 D Market Value Units 0.00 Common Shares 10867.29 10867.29 D Restricted stock award granted as director fees under a Chubb Limited long-term incentive plan (the "Plan"), which meets the requirements of Rule 16b-3. Such restricted stock will vest on the day of the next annual Chubb Limited shareholders meeting, assuming the reporting person is a director of Chubb Limited on such date. Common Shares being withheld in order to pay tax liability. Market Value Units are fully vested and are payable in common shares and are paid out at separation from service, unless further deferred by the participant. Total includes Market Value Units previously reported as held by the reporting person plus 240.29 shares credited at various times between July 2020 and April 2021 to the reporting person's account pursuant to the dividend investment provisions of the Plan which meets the requirements of Rule 16b-3, but excludes derivative securities of other types and other tranches, different vesting terms, performance periods and conditions, exercise terms and conditions, and expiration dates, as applicable. /s/ Samantha Froud, Attorney-in-fact 2021-05-24