| 
                 
                    Closing price on 5/21/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    6.30 | 
                 
                
                    | High | 
                    6.34 | 
                 
                
                    | Low | 
                    6.22 | 
                     
                
                    | Volume | 
                    293,120 | 
                                 
                
                    | Split-adjusted Price | 
                    6.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
QBS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/21/2018
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.34
             |               
            
                6.22
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                6.30
             |                                 
            
                293,120
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2018
             | 
            
                0.00 / 0.00%
             |             
            
                6.15
             |           
            
                6.35
             |               
            
                6.02
             |                           
            
                6.30
             | 
            
                6.25
             |                     
            
                6.30
             |                                 
            
                267,090
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2018
             | 
            
                +0.38 / +6.42%
             |             
            
                5.85
             |           
            
                6.33
             |               
            
                5.85
             |                           
            
                6.30
             | 
            
                6.25
             |                     
            
                6.30
             |                                 
            
                513,740
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2018
             | 
            
                +0.07 / +1.20%
             |             
            
                5.80
             |           
            
                6.00
             |               
            
                5.72
             |                           
            
                5.92
             | 
            
                5.88
             |                     
            
                5.92
             |                                 
            
                343,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2018
             | 
            
                +0.27 / +4.84%
             |             
            
                5.60
             |           
            
                5.97
             |               
            
                5.60
             |                           
            
                5.85
             | 
            
                5.83
             |                     
            
                5.85
             |                                 
            
                103,250
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2018
             | 
            
                +0.02 / +0.36%
             |             
            
                5.75
             |           
            
                5.75
             |               
            
                5.50
             |                           
            
                5.58
             | 
            
                5.58
             |                     
            
                5.58
             |                                 
            
                85,470
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2018
             | 
            
                0.00 / 0.00%
             |             
            
                5.32
             |           
            
                5.58
             |               
            
                5.32
             |                           
            
                5.56
             | 
            
                5.52
             |                     
            
                5.56
             |                                 
            
                72,470
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2018
             | 
            
                0.00 / 0.00%
             |             
            
                5.58
             |           
            
                5.59
             |               
            
                5.50
             |                           
            
                5.56
             | 
            
                5.57
             |                     
            
                5.56
             |                                 
            
                174,610
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2018
             | 
            
                -0.02 / -0.36%
             |             
            
                5.32
             |           
            
                5.60
             |               
            
                5.32
             |                           
            
                5.56
             | 
            
                5.47
             |                     
            
                5.56
             |                                 
            
                200,950
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2018
             | 
            
                +0.03 / +0.54%
             |             
            
                5.60
             |           
            
                5.60
             |               
            
                5.20
             |                           
            
                5.58
             | 
            
                5.35
             |                     
            
                5.58
             |                                 
            
                121,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2018
             | 
            
                +0.15 / +2.78%
             |             
            
                5.59
             |           
            
                5.59
             |               
            
                5.16
             |                           
            
                5.55
             | 
            
                5.40
             |                     
            
                5.55
             |                                 
            
                18,530
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2018
             | 
            
                +0.04 / +0.75%
             |             
            
                5.36
             |           
            
                5.65
             |               
            
                5.24
             |                           
            
                5.40
             | 
            
                5.29
             |                     
            
                5.40
             |                                 
            
                52,170
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2018
             | 
            
                -0.39 / -6.78%
             |             
            
                5.74
             |           
            
                5.74
             |               
            
                5.36
             |                           
            
                5.36
             | 
            
                5.50
             |                     
            
                5.36
             |                                 
            
                266,250
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2018
             | 
            
                +0.05 / +0.88%
             |             
            
                5.50
             |           
            
                5.75
             |               
            
                5.47
             |                           
            
                5.75
             | 
            
                5.62
             |                     
            
                5.75
             |                                 
            
                222,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2018
             | 
            
                +0.26 / +4.78%
             |             
            
                5.30
             |           
            
                5.79
             |               
            
                5.10
             |                           
            
                5.70
             | 
            
                5.45
             |                     
            
                5.70
             |                                 
            
                260,530
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2018
             | 
            
                -0.23 / -4.06%
             |             
            
                5.67
             |           
            
                5.67
             |               
            
                5.28
             |                           
            
                5.44
             | 
            
                5.44
             |                     
            
                5.44
             |                                 
            
                170,310
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2018
             | 
            
                -0.20 / -3.41%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.46
             |                           
            
                5.67
             | 
            
                5.56
             |                     
            
                5.67
             |                                 
            
                76,230
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2018
             | 
            
                -0.03 / -0.51%
             |             
            
                5.90
             |           
            
                5.98
             |               
            
                5.60
             |                           
            
                5.87
             | 
            
                5.83
             |                     
            
                5.87
             |                                 
            
                149,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2018
             | 
            
                -0.10 / -1.67%
             |             
            
                6.00
             |           
            
                6.00
             |               
            
                5.80
             |                           
            
                5.90
             | 
            
                5.94
             |                     
            
                5.90
             |                                 
            
                11,950
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2018
             | 
            
                -0.08 / -1.32%
             |             
            
                6.08
             |           
            
                6.08
             |               
            
                5.80
             |                           
            
                6.00
             | 
            
                5.92
             |                     
            
                6.00
             |                                 
            
                49,140
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2018
             | 
            
                +0.08 / +1.33%
             |             
            
                6.15
             |           
            
                6.15
             |               
            
                5.95
             |                           
            
                6.08
             | 
            
                6.00
             |                     
            
                6.08
             |                                 
            
                125,580
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2018
             | 
            
                +0.03 / +0.50%
             |             
            
                6.09
             |           
            
                6.09
             |               
            
                5.95
             |                           
            
                6.00
             | 
            
                6.01
             |                     
            
                6.00
             |                                 
            
                39,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2018
             | 
            
                -0.12 / -1.97%
             |             
            
                5.90
             |           
            
                5.98
             |               
            
                5.81
             |                           
            
                5.97
             | 
            
                5.94
             |                     
            
                5.97
             |                                 
            
                186,990
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2018
             | 
            
                +0.19 / +3.22%
             |             
            
                5.90
             |           
            
                6.13
             |               
            
                5.80
             |                           
            
                6.09
             | 
            
                5.93
             |                     
            
                6.09
             |                                 
            
                62,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2018
             | 
            
                0.00 / 0.00%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                5.75
             |                           
            
                5.90
             | 
            
                5.87
             |                     
            
                5.90
             |                                 
            
                19,590
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2018
             | 
            
                -0.25 / -4.07%
             |             
            
                6.00
             |           
            
                6.10
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.94
             |                     
            
                5.90
             |                                 
            
                73,190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2018
             | 
            
                -0.05 / -0.81%
             |             
            
                6.19
             |           
            
                6.28
             |               
            
                5.95
             |                           
            
                6.15
             | 
            
                6.13
             |                     
            
                6.15
             |                                 
            
                135,030
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2018
             | 
            
                -0.10 / -1.59%
             |             
            
                6.49
             |           
            
                6.49
             |               
            
                6.20
             |                           
            
                6.20
             | 
            
                6.30
             |                     
            
                6.20
             |                                 
            
                198,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2018
             | 
            
                +0.24 / +3.96%
             |             
            
                6.10
             |           
            
                6.46
             |               
            
                6.10
             |                           
            
                6.30
             | 
            
                6.31
             |                     
            
                6.30
             |                                 
            
                249,270
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2018
             | 
            
                +0.22 / +3.77%
             |             
            
                5.95
             |           
            
                6.06
             |               
            
                5.80
             |                           
            
                6.06
             | 
            
                5.95
             |                     
            
                6.06
             |                                 
            
                124,120
             |  
            
                 
             |                                                              
             
    
         
    
    
 |