| Explanation of Responses: |
| (1) | Represents deferred stock units purchased by the reporting person with automatic payroll deductions and partial company matching contributions. Deferred stock units are settled only in stock on a 1-for-1 basis. |
| (2) | Restricted stock units acquired pursuant to the 2018 Incentive Plan. Each unit will convert into one share of issuer's common stock. One-third of the units vests and distributes on each of 1/15/2025,1/15/2026, and 1/15/2027. Vesting (but not distribution) is accelerated on retirement eligibility. |
| (3) | Mandatory tax withholding on vested restricted stock units. |
| (4) | Based on a 401(k) plan statement dated 10/31/2024. |
