PRSS 2018 Proxy Statement

21 2017 Outstanding Equity Awards at Fiscal Year-End The following table lists all outstanding equity awards held by our named executive officers as of December 31, 2017. (1) Except as otherwise noted, all non-statutory stock option awards listed in the table vest over four years, with 1/4 th of the shares subject to the option vesting on the first anniversary of the date of grant and the remaining vesting in equal monthly installments thereafter over the subsequent three years. (2) Except as otherwise noted, all awards are RSUs vesting over four years, with 25% vesting each year on a quarterly basis. (3) Except as otherwise noted, the grant date for all non-statutory stock option awards is ten years prior to the option expiration date. (4) Represents unearned and unvested performance stock options that may vest based on the achievement of certain Company performance metrics from 2016-2018 to be evaluated at the end of 2018. (5) Market value calculated using the closing price of our common stock as of December 31, 2017 of $1.85. (6) Represents unearned and unvested PSUs that may vest based on the achievement of certain Company performance metrics from 2017-2019 to be evaluated at the end of 2019. (7) These awards were granted on April 30, 2015, April 22, 2016, and March 10, 2017. (8) These awards were granted on August 29, 2016 and March 10, 2017. (9) This award was granted on March 10, 2017. (10) These awards were granted on November 11, 2015, April 22, 2016, and March 10, 2017. Option Awards Stock Awards Name Number of Securities Underlying Unexercised Options Exercisable (#)(1) Number of Securities Underlying Unexercised Options Unexercisable (#)(1)(3) Equity Incentive Plan Awards: Number of Securities Underlying Unexercised Unearned Options (#)(1) Option Exercise Price ($/sh) Option Expiration Date Number of Shares or Units of Stock that Have Not Vested (#)(2) Market Value of Shares or Units of Stocks That Have Not Vested (#$)(5) Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights That Have Not Vested (#))6) Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units or Other Rights That Have Not Vested ($)(5) Fred E. Durham, III 78,892 19,723 5.58 8/4/2019 163,500 (7) 301,723 65,407 120,702 206,201 41,241 5.07 8/4/2021 156,937 86,063 4.30 5/15/2022 42,000 182,000 3.13 3/10/2027 37,352 (4) 3.74 12/31/2025 112,000 (4) 3.74 12/31/2025 56,000 (4) 3.74 12/31/2025 Phillip L. Milliner 15,166 30,334 3.08 8/29/2026 53,513 (8) 98,752 36,337 67,056 15,375 66,625 3.13 3/10/2027 9,204 (4) 3.08 12/31/2025 27,600 (4) 3.08 12/31/2025 13,800 (4) 3.08 12/31/2025 Robert D. Barton 39,583 60,417 3.27 5/16/2026 28,500 (9) 52,594 36,337 67,056 12,375 53,625 3.13 3/10/2027 13,340 (4) 3.27 12/31/2025 40,000 (4) 3.27 12/31/2025 20,000 (4) 3.27 12/31/2025 Ekumene M. Lysonge 44,270 40,730 4.66 11/11/2022 43,500 (10) 80,276 27,907 51,500 11,625 50,375 3.13 3/10/2027 4,668 (4) 3.74 12/31/2025 14,000 (4) 3.74 12/31/2025 7,000 (4) 3.74 12/31/2025