Ticker        Shares
 Person/Entity                Symbol        Owned (1)    At the Current Market

 Bill Schrader, Pres          PSIX           5,441,200         $62,573,800
 Matrix Partners, VC          PSIX           3,641,254         $41,874,421
 Humphreys/Matrix, Dir        PSIX           3,641,254         $41,874,421
 Woodson/Sigma, Dir           PSIX           2,670,254         $30,707,921
 Sigma Partners, VC           PSIX           2,481,954         $28,542,471
 Marty Schoffstall, CTO       PSIX           2,392,992         $27,519,408
 Bessmer Ventures, Indiv.     PSIX           2,239,814         $25,757,861
 Bessmer Venture Partners     PSIX           2,202,863         $25,332,924
 James Gleick, Pipeline guy   PSIX           1,782,343         $20,496,944