17.	Incentive Compensation

Stock-Based Compensation

We account for all stock-based compensation in accordance with ASC 718, Compensation – Stock Compensation. As of June 30, 2018, we have 9,167,437 shares available for future grants under the 2014 Equity Incentive Plan (“Plan”), if all awards granted are full value awards, as defined in the Plan. Stock-based compensation expense was $4,650,000 and $4,438,000 for the three months ended June 30, 2018 and 2017, respectively, and $10,915,000 and $7,867,000 for the six months ended June 30, 2018 and 2017, respectively.

2017 Performance-Based Awards Program (“2017 Performance Program”)

On February 5, 2018, the Compensation Committee of our Board of Directors (the “Compensation Committee”) approved the 2017 Performance Program, a multi-year performance-based long-term equity compensation program. The purpose of the 2017 Performance Program is to further align the interests of our stockholders with that of management by encouraging our senior officers to create stockholder value in a “pay for performance” structure.

Under the 2017 Performance Program, participants may earn awards in the form of Long Term Incentive Plan (“LTIP”) units of our Operating Partnership based on our Total Shareholder Return (“TSR”) over a three-year performance measurement period beginning on January 1, 2018 and continuing through December 31, 2020, on both an absolute basis and relative basis as follows:

•

25.0% of the award is earned if our TSR over the three-year performance measurement period equals or exceeds 30.0%, with no awards being earned if our TSR over such period is less than 18.0% and awards being determined based on linear interpolation if our TSR over such period falls between such ranges.

•

75.0% of the award is earned if our TSR over the three-year performance measurement period equals or exceeds the 80th percentile of the performance of the SNL Office REIT Index constituents on a relative basis, with no awards being earned if our TSR over such period is less than the 30th percentile and awards being determined based on linear interpolation if our TSR over such period falls between such ranges.

Awards granted to our Chief Executive Officer, under the 2017 Performance Program include an additional performance feature requiring threshold TSR performance on both an absolute and a relative basis in order for any awards to be earned. Accordingly, our Chief Executive Officer will not earn any awards under the 2017 Performance Program unless our TSR for the performance measurement period is 18.0% or higher and in the 30th percentile or higher of the SNL Office REIT Index constituents.

In addition, if the designated performance objectives are achieved, awards earned under the 2017 Performance Program are also subject to vesting based on continued employment with us through December 31, 2021, with 50.0% of each award vesting upon the conclusion of the performance measurement period, and the remaining 50.0% vesting on December 31, 2021. Furthermore, our Named Executive Officers are required to hold earned awards for an additional year following vesting.

The fair value of the awards granted under the 2017 Performance Program on the date of the grant was $7,009,000 and is being amortized into expense over the four-year vesting period using a graded vesting attribution method.

2015 Performance-Based Awards Program (“2015 Performance Program”)

On April 3, 2018, the Compensation Committee determined that the performance goals set forth in the 2015 Performance Program were not satisfied during the performance measurement period, which ended on March 31, 2018. Accordingly, all of the 779,055 LTIP units that were granted on April 1, 2015, were forfeited, with no awards being earned.