KBR

The price reported in Table I, Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $31.44 to $31.458, inclusive. The reporting person undertakes to provide KBR, Inc., any security holder of KBR, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The total number reported includes 192.81 additional shares resulting from an automatic broker-administered dividend reinvestment plan.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Shares acquired under dividend reinvestment in the Directors' deferred compensation plan.

Shares acquired under dividend reinvestment in the Directors' deferred compensation plan.

Shares acquired under dividend reinvestment in the Directors' deferred compensation plan.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

The reporting person was granted restricted stock units that convert to common stock on a 1-to-1 ratio where 80% vest 33 1/3% on each anniversary of the grant date and 20% vest 33 1/3% on each anniversary of the grant date subject to meeting a performance requirement. These restricted stock units represent the portion of the grant (80%) not subject to a performance requirement.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

Restricted stock units will convert to common stock on a 1-to-1 ratio. 100% of the restricted stock units will vest 6 months after the grant date.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents stock acquired as a result of the achievement of the total stockholder return performance metric of the KBR Long-Term Performance Cash and Stock Award granted in 2023.

Represents stock acquired as a result of the achievement of the total stockholder return performance metric of the KBR Long-Term Performance Cash and Stock Award granted in 2023.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents stock acquired as a result of the achievement of the total stockholder return performance metric of the KBR Long-Term Performance Cash and Stock Award granted in 2023.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents shares withheld to pay withholding taxes due upon vesting.

Represents stock acquired as a result of the achievement of the total stockholder return performance metric of the KBR Long-Term Performance Cash and Stock Award granted in 2023.

Represents stock acquired as a result of the achievement of the total stockholder return performance metric of the KBR Long-Term Performance Cash and Stock Award granted in 2023.

Represents stock acquired as a result of the achievement of the total stockholder return performance metric of the KBR Long-Term Performance Cash and Stock Award granted in 2023.