| 
                 
                    Closing price on 6/4/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    8.90 | 
                 
                
                    | High | 
                    8.90 | 
                 
                
                    | Low | 
                    8.80 | 
                     
                
                    | Volume | 
                    11,520 | 
                                 
                
                    | Split-adjusted Price | 
                    5.37 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
BSI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/4/2019
             | 
            
                0.00 / 0.00%
             |             
            
                8.90
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.85
             |                     
            
                5.37
             |                                 
            
                11,520
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2019
             | 
            
                +0.05 / +0.56%
             |             
            
                8.85
             |           
            
                8.90
             |               
            
                8.80
             |                           
            
                8.90
             | 
            
                8.86
             |                     
            
                5.37
             |                                 
            
                4,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2019
             | 
            
                -0.10 / -1.12%
             |             
            
                8.96
             |           
            
                9.00
             |               
            
                8.85
             |                           
            
                8.85
             | 
            
                8.92
             |                     
            
                5.34
             |                                 
            
                2,180
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2019
             | 
            
                0.00 / 0.00%
             |             
            
                8.60
             |           
            
                8.96
             |               
            
                8.60
             |                           
            
                8.95
             | 
            
                8.80
             |                     
            
                5.40
             |                                 
            
                2,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2019
             | 
            
                -0.15 / -1.65%
             |             
            
                8.62
             |           
            
                9.10
             |               
            
                8.62
             |                           
            
                8.95
             | 
            
                8.91
             |                     
            
                5.40
             |                                 
            
                6,170
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2019
             | 
            
                -0.10 / -1.09%
             |             
            
                9.20
             |           
            
                9.20
             |               
            
                9.00
             |                           
            
                9.10
             | 
            
                9.13
             |                     
            
                5.49
             |                                 
            
                2,380
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2019
             | 
            
                +0.22 / +2.45%
             |             
            
                9.60
             |           
            
                9.60
             |               
            
                9.00
             |                           
            
                9.20
             | 
            
                9.14
             |                     
            
                5.55
             |                                 
            
                11,380
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2019
             | 
            
                -0.02 / -0.20%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.70
             |                           
            
                9.78
             | 
            
                9.74
             |                     
            
                5.42
             |                                 
            
                20,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2019
             | 
            
                +0.09 / +0.93%
             |             
            
                9.72
             |           
            
                9.80
             |               
            
                9.72
             |                           
            
                9.80
             | 
            
                9.76
             |                     
            
                5.43
             |                                 
            
                19,680
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2019
             | 
            
                -0.04 / -0.41%
             |             
            
                9.84
             |           
            
                9.84
             |               
            
                9.70
             |                           
            
                9.71
             | 
            
                9.72
             |                     
            
                5.38
             |                                 
            
                60,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2019
             | 
            
                +0.05 / +0.52%
             |             
            
                9.70
             |           
            
                9.80
             |               
            
                9.70
             |                           
            
                9.75
             | 
            
                9.74
             |                     
            
                5.40
             |                                 
            
                2,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2019
             | 
            
                0.00 / 0.00%
             |             
            
                9.70
             |           
            
                9.70
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                9.70
             |                     
            
                5.37
             |                                 
            
                2,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2019
             | 
            
                0.00 / 0.00%
             |             
            
                9.70
             |           
            
                9.70
             |               
            
                9.50
             |                           
            
                9.70
             | 
            
                9.55
             |                     
            
                5.37
             |                                 
            
                8,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2019
             | 
            
                +0.05 / +0.52%
             |             
            
                9.26
             |           
            
                9.70
             |               
            
                9.26
             |                           
            
                9.70
             | 
            
                9.48
             |                     
            
                5.37
             |                                 
            
                140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2019
             | 
            
                0.00 / 0.00%
             |             
            
                9.65
             |           
            
                9.70
             |               
            
                9.65
             |                           
            
                9.65
             | 
            
                9.66
             |                     
            
                5.35
             |                                 
            
                8,950
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2019
             | 
            
                +0.05 / +0.52%
             |             
            
                9.50
             |           
            
                9.65
             |               
            
                9.50
             |                           
            
                9.65
             | 
            
                9.65
             |                     
            
                5.35
             |                                 
            
                2,280
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2019
             | 
            
                -0.06 / -0.62%
             |             
            
                9.70
             |           
            
                9.70
             |               
            
                9.60
             |                           
            
                9.60
             | 
            
                9.64
             |                     
            
                5.32
             |                                 
            
                7,880
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2019
             | 
            
                +0.06 / +0.63%
             |             
            
                9.70
             |           
            
                9.70
             |               
            
                9.66
             |                           
            
                9.66
             | 
            
                9.68
             |                     
            
                5.35
             |                                 
            
                120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2019
             | 
            
                -0.10 / -1.03%
             |             
            
                9.70
             |           
            
                9.70
             |               
            
                9.60
             |                           
            
                9.60
             | 
            
                9.65
             |                     
            
                5.32
             |                                 
            
                4,510
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2019
             | 
            
                -0.02 / -0.21%
             |             
            
                9.71
             |           
            
                9.72
             |               
            
                9.70
             |                           
            
                9.70
             | 
            
                9.71
             |                     
            
                5.37
             |                                 
            
                3,820
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2019
             | 
            
                -0.08 / -0.82%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.72
             |                           
            
                9.72
             | 
            
                9.72
             |                     
            
                5.39
             |                                 
            
                720
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2019
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                9.80
             |               
            
                9.50
             |                           
            
                9.80
             | 
            
                9.54
             |                     
            
                5.43
             |                                 
            
                2,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2019
             | 
            
                0.00 / 0.00%
             |             
            
                9.80
             |           
            
                9.85
             |               
            
                9.75
             |                           
            
                9.80
             | 
            
                9.81
             |                     
            
                5.43
             |                                 
            
                18,150
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2019
             | 
            
                0.00 / 0.00%
             |             
            
                9.90
             |           
            
                9.90
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.85
             |                     
            
                5.43
             |                                 
            
                1,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2019
             | 
            
                0.00 / 0.00%
             |             
            
                9.99
             |           
            
                9.99
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.86
             |                     
            
                5.43
             |                                 
            
                8,420
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2019
             | 
            
                -0.15 / -1.51%
             |             
            
                9.95
             |           
            
                9.95
             |               
            
                9.80
             |                           
            
                9.80
             | 
            
                9.80
             |                     
            
                5.43
             |                                 
            
                10,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2019
             | 
            
                -0.04 / -0.40%
             |             
            
                9.60
             |           
            
                10.00
             |               
            
                9.60
             |                           
            
                9.95
             | 
            
                9.63
             |                     
            
                5.51
             |                                 
            
                2,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2019
             | 
            
                +0.09 / +0.91%
             |             
            
                10.00
             |           
            
                10.00
             |               
            
                9.90
             |                           
            
                9.99
             | 
            
                9.97
             |                     
            
                5.53
             |                                 
            
                11,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2019
             | 
            
                +0.16 / +1.64%
             |             
            
                10.25
             |           
            
                10.25
             |               
            
                9.90
             |                           
            
                9.90
             | 
            
                10.12
             |                     
            
                5.48
             |                                 
            
                56,730
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2019
             | 
            
                +0.12 / +1.25%
             |             
            
                9.70
             |           
            
                9.80
             |               
            
                9.70
             |                           
            
                9.74
             | 
            
                9.71
             |                     
            
                5.40
             |                                 
            
                64,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |