| 
                 
                    Closing price on 12/14/2012
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.90 | 
                 
                
                    | High | 
                    3.90 | 
                 
                
                    | Low | 
                    3.70 | 
                     
                
                    | Volume | 
                    506,700 | 
                                 
                
                    | Split-adjusted Price | 
                    3.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PV2 Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/14/2012
             | 
            
                -0.10 / -2.56%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.82
             |                     
            
                3.80
             |                                 
            
                506,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2012
             | 
            
                -0.10 / -2.50%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.96
             |                     
            
                3.90
             |                                 
            
                403,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2012
             | 
            
                +0.10 / +2.56%
             |             
            
                3.90
             |           
            
                4.10
             |               
            
                3.80
             |                           
            
                4.00
             | 
            
                3.94
             |                     
            
                4.00
             |                                 
            
                536,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/11/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.96
             |                     
            
                3.90
             |                                 
            
                486,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/10/2012
             | 
            
                +0.10 / +2.63%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.86
             |                     
            
                3.90
             |                                 
            
                768,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2012
             | 
            
                +0.20 / +5.56%
             |             
            
                3.60
             |           
            
                3.80
             |               
            
                3.60
             |                           
            
                3.80
             | 
            
                3.78
             |                     
            
                3.80
             |                                 
            
                746,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.50
             |                           
            
                3.60
             | 
            
                3.60
             |                     
            
                3.60
             |                                 
            
                154,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2012
             | 
            
                +0.10 / +2.86%
             |             
            
                3.60
             |           
            
                3.70
             |               
            
                3.50
             |                           
            
                3.60
             | 
            
                3.63
             |                     
            
                3.60
             |                                 
            
                619,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/4/2012
             | 
            
                +0.10 / +2.94%
             |             
            
                3.40
             |           
            
                3.60
             |               
            
                3.30
             |                           
            
                3.50
             | 
            
                3.42
             |                     
            
                3.50
             |                                 
            
                161,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.20
             |           
            
                3.40
             |               
            
                3.20
             |                           
            
                3.40
             | 
            
                3.30
             |                     
            
                3.40
             |                                 
            
                134,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/30/2012
             | 
            
                -0.10 / -2.86%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.30
             |                           
            
                3.40
             | 
            
                3.40
             |                     
            
                3.40
             |                                 
            
                49,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.44
             |                     
            
                3.50
             |                                 
            
                263,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/28/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.50
             |                     
            
                3.50
             |                                 
            
                89,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/27/2012
             | 
            
                -0.10 / -2.78%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.50
             |                     
            
                3.50
             |                                 
            
                209,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/26/2012
             | 
            
                -0.10 / -2.70%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.50
             |                           
            
                3.60
             | 
            
                3.60
             |                     
            
                3.60
             |                                 
            
                260,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/23/2012
             | 
            
                -0.20 / -5.13%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.80
             |                     
            
                3.70
             |                                 
            
                41,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2012
             | 
            
                +0.20 / +5.41%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.90
             | 
            
                3.74
             |                     
            
                3.90
             |                                 
            
                102,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2012
             | 
            
                -0.20 / -5.13%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.76
             |                     
            
                3.70
             |                                 
            
                328,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/20/2012
             | 
            
                +0.10 / +2.63%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.90
             |                     
            
                3.90
             |                                 
            
                125,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2012
             | 
            
                -0.20 / -5.00%
             |             
            
                3.90
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.83
             |                     
            
                3.80
             |                                 
            
                94,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2012
             | 
            
                +0.10 / +2.56%
             |             
            
                3.90
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                4.00
             | 
            
                3.90
             |                     
            
                4.00
             |                                 
            
                59,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2012
             | 
            
                -0.10 / -2.50%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                3.90
             | 
            
                3.90
             |                     
            
                3.90
             |                                 
            
                148,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                3.99
             |                     
            
                4.00
             |                                 
            
                98,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2012
             | 
            
                -0.10 / -2.44%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.01
             |                     
            
                4.00
             |                                 
            
                244,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.12
             |                     
            
                4.10
             |                                 
            
                185,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2012
             | 
            
                +0.10 / +2.50%
             |             
            
                3.90
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.10
             | 
            
                4.01
             |                     
            
                4.10
             |                                 
            
                53,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2012
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                4.00
             | 
            
                3.92
             |                     
            
                4.00
             |                                 
            
                77,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2012
             | 
            
                +0.10 / +2.56%
             |             
            
                3.90
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                3.98
             |                     
            
                4.00
             |                                 
            
                127,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.84
             |                     
            
                3.90
             |                                 
            
                80,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2012
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.90
             | 
            
                3.79
             |                     
            
                3.90
             |                                 
            
                129,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |