Transaction Details

Footnotes

Represents shares of common stock acquired upon settlement of the performance restricted stock units ("PRSUs") listed in Table II. | Represents shares of common stock that have been sold by the Reporting Person to satisfy income tax withholding and remittance obligations in connection with the net settlement of the PRSUs. | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.83 to $3.02 per share, inclusive. The reporting person hereby undertakes to provide to the Issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. | Each PRSU represents a contingent right to receive one share of the issuer's common stock at settlement. | Pursuant to the terms of the award agreement governing the PRSU, the total number of shares underlying the PRSU vest on the achievement of one of certain milestones.