13.	Incentive Compensation

Stock Based Compensation

We account for all stock-based compensation in accordance with ASC 718, Compensation – Stock Compensation. As of March 31, 2015, we have 15,501,430 shares available for future grants under the Plan, if all awards granted are full value awards, as defined in the 2014 Equity Incentive Plan. Stock based compensation for the three months ended March 31, 2015 was $3,035,000, and includes $1,861,000 of expense related to the acceleration of vesting of the stock awards in connection with a separation agreement and release.

On April 1, 2015, the compensation committee (the “Compensation Committee”) of the board of directors approved the Company’s 2015 Performance Program (the “2015 Performance Program”), a multi-year performance-based equity compensation program. The purpose of the 2015 Performance Program is to further align the interests of the Company’s stockholders with that of management by encouraging the Company’s senior officers to create stockholder value in a “pay for performance” structure. Under the 2015 Performance Program, participants may earn awards in the form of LTIP Units based on the Company’s total return to stockholders (“TRS”) over a three-year performance measurement period beginning on April 1, 2015 and continuing through March 31, 2018, on both an absolute basis and relative basis. One-half of the award is earned if the Company outperforms a predetermined absolute TRS and the other half is earned if the Company outperforms a predetermined relative TRS. Specifically, participants begin to earn awards under the 2015 Performance Program if the Company’s TRS for the performance measurement period equals or exceeds 21% on an absolute basis and exceeds the performance of the SNL Office REIT Index by 100 basis points on a relative basis, and awards will be fully earned if the Company’s TRS for the performance measurement period equals or exceeds 40% on an absolute basis and exceeds the performance of the SNL Office REIT Index by 700 basis points on a relative basis. Participants will not earn any awards under the 2015 Performance Program if the Company’s TRS during the performance measurement period does not meet these minimum thresholds. The number of LTIP Units that are earned if performance is above the minimum thresholds, but below the maximum thresholds, will be determined based on linear interpolation between the percentages earned at the minimum and maximum thresholds. During the performance measurement period, participants will receive only one-tenth of the dividends otherwise payable to the Company’s stockholders with respect to their LTIP Units and the remaining dividends on their LTIP Units will accrue during the performance measurement period and will be paid to participants only if the LTIP Units are ultimately earned based on the achievement of the designated performance objectives.

If the designated performance objectives are achieved, awards earned under the 2015 Performance Program will also be subject to vesting based on continued employment with the Company through April 1, 2020, with 50% of each award vesting on the date the Compensation Committee determines the awards earned under the 2015 Performance Program following the conclusion of the performance period, and 25% vesting on each of April 1, 2019 and April 1, 2020.

Deferred Compensation

In connection with the Formation Transactions, we assumed a deferred compensation plan (the “1993 Plan”) from our Predecessor. The 1993 Plan permits certain management employees to defer certain percentages of their compensation, as defined. The assets of the 1993 Plan remain the sole property of the Company and are subject to the claims of its general creditors. The assets of the 1993 Plan are included in “marketable securities” and “restricted cash,” with an offsetting liability included in “other liabilities” on our consolidated balance sheets. Income from the mark-to-market of investments in our deferred compensation plan are included in “interest and other income” and this amount is entirely offset by expense from the mark-to-market of plan liabilities, which is included as a component of “general and administrative” expenses on our consolidated statements of income.

The 1993 Plan had a balance of $29,110,000 and $28,148,000 as of March 31, 2015 and December 31, 2014, respectively.