CB · Chubb Ltd

The Common Shares reported herein as being sold were sold at the same price.

The Common Shares reported herein as being sold were sold at the same price.

Options vested as follows: 1/3 on February 23, 2018, 1/3 on February 23, 2019 and 1/3 on February 23, 2020.

There are 1,438 options remaining in this tranche. Total includes options from other tranches with different exercise prices, vesting and expiration dates.

Gift.

The Common Shares reported herein as being sold were sold at a range of between $320.86 and $321.86 per share. The sale price reported above represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Gift.

The Common Shares reported herein as being sold were sold at a range of between $321.87 and $321.98 per share. The sale price reported above represents the weighted average sale price for the reported transaction and has been rounded to the nearest cent. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

Gift.

Common Shares being withheld in order to pay tax liability.

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.

Total includes 629.95 shares credited at various times between April 2025 and April 2026 to the reporting person's deferred stock account pursuant to the dividend investment provisions of the Plan, which meets the requirements of Rule 16b-3.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

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.

Common Shares being withheld in order to pay tax liability.

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.

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.

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.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

Common Shares being withheld in order to pay tax liability.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

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.

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.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

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.

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.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

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.

Total includes 11.74 shares credited on April 6, 2026 to the reporting person's deferred stock account pursuant to the dividend investment provisions of the Plan, which meets the requirements of Rule 16b-3.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

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.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

Common Shares being withheld in order to pay tax liability.

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.

Represents the amount of restricted stock forfeited due to partial satisfaction of certain performance based criteria of restricted stock awarded pursuant to the Chubb Limited 2016 Long-Term Incentive Plan.

Common Shares being withheld in order to pay tax liability.