| 
                 
                    Closing price on 8/31/2015
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.00 | 
                 
                
                    | High | 
                    3.10 | 
                 
                
                    | Low | 
                    3.00 | 
                     
                
                    | Volume | 
                    46,070 | 
                                 
                
                    | Split-adjusted Price | 
                    2.79 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
VOS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/31/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.10
             |               
            
                3.00
             |                           
            
                3.00
             | 
            
                3.03
             |                     
            
                2.79
             |                                 
            
                46,070
             |            
            
                 
             |                                       
         
    
        
            | 
                8/28/2015
             | 
            
                +0.10 / +3.45%
             |             
            
                3.00
             |           
            
                3.10
             |               
            
                2.90
             |                           
            
                3.00
             | 
            
                3.00
             |                     
            
                2.79
             |                                 
            
                96,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/27/2015
             | 
            
                +0.10 / +3.57%
             |             
            
                2.90
             |           
            
                2.90
             |               
            
                2.90
             |                           
            
                2.90
             | 
            
                2.90
             |                     
            
                2.70
             |                                 
            
                36,360
             |            
            
                 
             |                                       
         
    
        
            | 
                8/26/2015
             | 
            
                +0.10 / +3.70%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.80
             | 
            
                2.77
             |                     
            
                2.61
             |                                 
            
                17,680
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/25/2015
             | 
            
                -0.10 / -3.57%
             |             
            
                2.70
             |           
            
                2.80
             |               
            
                2.70
             |                           
            
                2.70
             | 
            
                2.75
             |                     
            
                2.51
             |                                 
            
                92,130
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2015
             | 
            
                -0.20 / -6.67%
             |             
            
                2.90
             |           
            
                3.00
             |               
            
                2.80
             |                           
            
                2.80
             | 
            
                2.82
             |                     
            
                2.61
             |                                 
            
                74,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/21/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.10
             |               
            
                2.80
             |                           
            
                3.00
             | 
            
                2.86
             |                     
            
                2.79
             |                                 
            
                122,730
             |            
            
                 
             |                                       
         
    
        
            | 
                8/20/2015
             | 
            
                -0.20 / -6.25%
             |             
            
                3.10
             |           
            
                3.20
             |               
            
                3.00
             |                           
            
                3.00
             | 
            
                3.06
             |                     
            
                2.79
             |                                 
            
                87,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/19/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.10
             |           
            
                3.20
             |               
            
                3.10
             |                           
            
                3.20
             | 
            
                3.15
             |                     
            
                2.98
             |                                 
            
                28,410
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2015
             | 
            
                +0.10 / +3.23%
             |             
            
                3.20
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.20
             | 
            
                3.14
             |                     
            
                2.98
             |                                 
            
                173,530
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2015
             | 
            
                -0.10 / -3.13%
             |             
            
                3.10
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.10
             | 
            
                3.18
             |                     
            
                2.89
             |                                 
            
                47,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/14/2015
             | 
            
                -0.10 / -3.03%
             |             
            
                3.10
             |           
            
                3.30
             |               
            
                3.10
             |                           
            
                3.20
             | 
            
                3.18
             |                     
            
                2.98
             |                                 
            
                51,960
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/13/2015
             | 
            
                -0.20 / -5.71%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.32
             |                     
            
                3.07
             |                                 
            
                218,180
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2015
             | 
            
                +0.10 / +2.94%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.45
             |                     
            
                3.26
             |                                 
            
                55,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2015
             | 
            
                -0.10 / -2.86%
             |             
            
                3.30
             |           
            
                3.60
             |               
            
                3.30
             |                           
            
                3.40
             | 
            
                3.48
             |                     
            
                3.16
             |                                 
            
                78,530
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2015
             | 
            
                +0.20 / +6.06%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.41
             |                     
            
                3.26
             |                                 
            
                27,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/7/2015
             | 
            
                -0.10 / -2.94%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.30
             |                           
            
                3.30
             | 
            
                3.37
             |                     
            
                3.07
             |                                 
            
                13,040
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2015
             | 
            
                -0.20 / -5.56%
             |             
            
                3.50
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.40
             | 
            
                3.40
             |                     
            
                3.16
             |                                 
            
                37,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2015
             | 
            
                +0.10 / +2.86%
             |             
            
                3.50
             |           
            
                3.60
             |               
            
                3.50
             |                           
            
                3.60
             | 
            
                3.55
             |                     
            
                3.35
             |                                 
            
                11,750
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.50
             |                           
            
                3.50
             | 
            
                3.50
             |                     
            
                3.26
             |                                 
            
                50
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2015
             | 
            
                +0.10 / +2.94%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.45
             |                     
            
                3.26
             |                                 
            
                93,310
             |            
            
                 
             |                                       
         
    
        
            | 
                7/31/2015
             | 
            
                -0.10 / -2.86%
             |             
            
                3.50
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.40
             | 
            
                3.49
             |                     
            
                3.16
             |                                 
            
                20,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.40
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.53
             |                     
            
                3.26
             |                                 
            
                77,640
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2015
             | 
            
                +0.10 / +2.94%
             |             
            
                3.40
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.50
             |                     
            
                3.26
             |                                 
            
                151,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2015
             | 
            
                -0.10 / -2.86%
             |             
            
                3.40
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.40
             | 
            
                3.44
             |                     
            
                3.16
             |                                 
            
                29,670
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.44
             |                     
            
                3.26
             |                                 
            
                158,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2015
             | 
            
                -0.10 / -2.78%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.50
             |                           
            
                3.50
             | 
            
                3.55
             |                     
            
                3.26
             |                                 
            
                154,970
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.50
             |           
            
                3.70
             |               
            
                3.50
             |                           
            
                3.60
             | 
            
                3.59
             |                     
            
                3.35
             |                                 
            
                96,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/22/2015
             | 
            
                -0.10 / -2.70%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.60
             | 
            
                3.68
             |                     
            
                3.35
             |                                 
            
                9,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/21/2015
             | 
            
                0.00 / 0.00%
             |             
            
                3.70
             |           
            
                3.70
             |               
            
                3.60
             |                           
            
                3.70
             | 
            
                3.62
             |                     
            
                3.44
             |                                 
            
                119,410
             |  
            
                 
             |                                                              
             
    
         
    
    
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