| 
                 
                    Closing price on 12/31/2015
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    2.70 | 
                 
                
                    | High | 
                    2.80 | 
                 
                
                    | Low | 
                    2.70 | 
                     
                
                    | Volume | 
                    32,170 | 
                                 
                
                    | Split-adjusted Price | 
                    2.51 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VOS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/31/2015
             | 
            
                -0.10 / -3.57%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.74
             |                     
            
                2.51
             |                                 
            
                32,170
             |            
            
                 
             |                                       
         
    
        
            | 
                12/30/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.78
             |                     
            
                2.61
             |                                 
            
                23,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/29/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.75
             |                     
            
                2.61
             |                                 
            
                2,720
             |            
            
                 
             |                                       
         
    
        
            | 
                12/28/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.75
             |                     
            
                2.61
             |                                 
            
                17,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/25/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.61
             |                                 
            
                20,290
             |            
            
                 
             |                                       
         
    
        
            | 
                12/24/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.73
             |                     
            
                2.61
             |                                 
            
                35,120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/23/2015
             | 
            
                -0.10 / -3.45%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.78
             |                     
            
                2.61
             |                                 
            
                50,050
             |            
            
                 
             |                                       
         
    
        
            | 
                12/22/2015
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.81
             |                     
            
                2.70
             |                                 
            
                11,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/21/2015
             | 
            
                -0.10 / -3.45%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.88
             |                     
            
                2.61
             |                                 
            
                8,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/18/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.85
             |                     
            
                2.70
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/17/2015
             | 
            
                +0.10 / +3.57%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.70
             |                                 
            
                23,280
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.89
             |                     
            
                2.61
             |                                 
            
                35,340
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/15/2015
             | 
            
                -0.10 / -3.45%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.81
             |                     
            
                2.61
             |                                 
            
                28,510
             |            
            
                 
             |                                       
         
    
        
            | 
                12/14/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.70
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/11/2015
             | 
            
                +0.10 / +3.57%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.90
             | 
            
                2.87
             |                     
            
                2.70
             |                                 
            
                93,930
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2015
             | 
            
                -0.10 / -3.45%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.84
             |                     
            
                2.61
             |                                 
            
                38,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.85
             |                     
            
                2.70
             |                                 
            
                27,040
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2015
             | 
            
                +0.10 / +3.57%
             |             
            
                2.70
             |           
            
                2.90
             |               
            
                2.70
             |                           
            
                2.90
             | 
            
                2.81
             |                     
            
                2.70
             |                                 
            
                24,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/7/2015
             | 
            
                +0.10 / +3.70%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.77
             |                     
            
                2.61
             |                                 
            
                6,490
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2015
             | 
            
                -0.10 / -3.57%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.78
             |                     
            
                2.51
             |                                 
            
                29,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.61
             |                                 
            
                12,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.83
             |                     
            
                2.61
             |                                 
            
                61,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.70
             |                     
            
                2.61
             |                                 
            
                5,920
             |            
            
                 
             |                                       
         
    
        
            | 
                11/30/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.80
             |                     
            
                2.61
             |                                 
            
                58,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/27/2015
             | 
            
                -0.10 / -3.45%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.81
             |                     
            
                2.61
             |                                 
            
                17,820
             |            
            
                 
             |                                       
         
    
        
            | 
                11/26/2015
             | 
            
                -0.10 / -3.33%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.92
             |                     
            
                2.70
             |                                 
            
                119,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2015
             | 
            
                +0.10 / +3.45%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                3.00
             | 
            
                2.92
             |                     
            
                2.79
             |                                 
            
                28,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                2.90
             | 
            
                2.89
             |                     
            
                2.70
             |                                 
            
                55,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/23/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.70
             |                                 
            
                45,860
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2015
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.93
             |                     
            
                2.70
             |                                 
            
                43,330
             |  
            
                 
             |                                                              
             
    
         
    
    
 |