| Id | Content |
|---|---|
| F1 | Portion vested at anniversary of three-year award. |
| F2 | Convert without cost to shares of common stock on a one-for-one basis. |
| F3 | The reported transaction involved the vesting of 10,292 restricted stock units at the anniversary of the three-year award. The reporting person has previously reported awards of restricted stock units in Table II of Form 4. The total reported in Column 5 includes the 10,292 newly vested shares, 62,230 restricted stock units previously reported in Table II (including 10,292 unvested restricted stock units unvested in connection with the three-year award reported herein), and 55,327 shares of common stock. |
| F4 | Shares deemed surrendered in payment of tax liability resulting from vesting of restricted stock units. |