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represent the performance-based RSU awards, which are scheduled to vest between 0% and 150% of the number of shares shown in the "Target" sub-column based on
attainment of a specified share price performance goal during the three-year performance period. If the threshold performance level is not attained, the awards will be forfeited. The amounts in the
"Threshold" sub-column reflect the 45% of the shares shown in the "Target" sub-column that will vest on attainment of the threshold performance level. The amounts in the "Maximum" sub-column reflect
the 150% of the shares that will vest on attainment of the maximum performance level. See the information under the heading "Elements of Our Compensation
Program" in the subsection entitled "Compensation Discussion and Analysis" for more information about these performance-based RSU awards.
for the time-based RSU awards represent their aggregate grant date fair values, calculated in accordance with FASB ASC Topic 718, excluding the effect of
for the performance-based RSU awards were calculated based on the probable outcome of the performance goal as of the grant date, consistent with the estimate of aggregate compensation cost to
be recognized over the service period determined as of the grant date under FASB ASC Topic 718, excluding the effect of estimated forfeitures. For the values of these awards, assuming attainment of
the maximum level of performance, see footnote 1 to the "2018 Summary Compensation Table" above. The actual value, if any, that each NEO will realize for these performance-based RSU awards is a
function of the value of the shares if and when the awards vest.
additional information on how we account for equity-based compensation, see Note 19 to our consolidated financial statements for the year ended December 31, 2018 and under the
heading "Stock-Based Compensation" in the section entitled "Critical Accounting Policies" included in our Annual Report on Form 10-K for the year ended December 31, 2018.
represent the time-based RSU awards that are scheduled to vest three years from the grant date.
represent the retention RSU awards that are scheduled to vest on the following schedule: 20% on the first anniversary of the grant date, 30% on the second
anniversary of the grant date and 50% on the third anniversary of the grant date.