#1 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.345 to $183.120, inclusive. 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.

#2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.335 to $182.330, inclusive. 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.

#1 These common stock units were acquired upon Mr. Topalian's election to defer a portion of his cash award received under the Company's annual incentive plan. Mr. Topalian is immediately vested in these common stock units, which will be distributed to him after his retirement from the Company based upon the following schedule: 50% received three years after retirement and 50% received four years after retirement.

#1 Represents shares withheld by the Issuer for payment of the tax liability incurred upon the vesting of previously awarded restricted stock units as reported on Form 4 dated 6/3/21.

#2 Represents shares withheld by the Issuer for payment of the tax liability incurred upon the vesting of previously awarded restricted stock units as reported on Form 4 dated 6/3/22.

#3 Represents shares withheld by the Issuer for payment of the tax liability incurred upon the vesting of previously awarded restricted stock units as reported on Form 4 dated 6/5/23.

#4 The shares of common stock reported are issuable to the reporting person upon vesting of restricted stock units that represent the right to receive one share of common stock. The restricted stock units vest in three annual installments commencing on June 1, 2025, subject to acceleration upon the date of termination of the reporting person's employment with the company by reason of death, disability or retirement or upon a change in control of the company. The company will issue the shares of common stock represented by the units to the reporting person or, if applicable, his or her estate, as soon as administratively practicable after the units become vested.

#1 Represents shares withheld by the Issuer for payment of the tax liability incurred upon the vesting of previously awarded restricted stock units as reported on Form 4 dated 6/3/21.

#2 Represents shares withheld by the Issuer for payment of the tax liability incurred upon the vesting of previously awarded restricted stock units as reported on Form 4 dated 6/3/22.

#3 Represents shares withheld by the Issuer for payment of the tax liability incurred upon the vesting of previously awarded restricted stock units as reported on Form 4 dated 6/5/23.

#4 The shares of common stock reported are issuable to the reporting person upon vesting of restricted stock units that represent the right to receive one share of common stock. The restricted stock units vest in three annual installments commencing on June 1, 2025, subject to acceleration upon the date of termination of the reporting person's employment with the company by reason of death, disability or retirement or upon a change in control of the company. The company will issue the shares of common stock represented by the units to the reporting person or, if applicable, his or her estate, as soon as administratively practicable after the units become vested.