| 
                 
                    Closing price on 7/26/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.81 | 
                 
                
                    | High | 
                    1.92 | 
                 
                
                    | Low | 
                    1.80 | 
                     
                
                    | Volume | 
                    99,680 | 
                                 
                
                    | Split-adjusted Price | 
                    1.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PXT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/26/2018
             | 
            
                -0.13 / -6.74%
             |             
            
                1.81
             |           
            
                1.92
             |               
            
                1.80
             |                           
            
                1.80
             | 
            
                1.81
             |                     
            
                1.80
             |                                 
            
                99,680
             |            
            
                 
             |                                       
         
    
        
            | 
                7/25/2018
             | 
            
                +0.03 / +1.58%
             |             
            
                1.91
             |           
            
                1.93
             |               
            
                1.78
             |                           
            
                1.93
             | 
            
                1.85
             |                     
            
                1.93
             |                                 
            
                2,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/24/2018
             | 
            
                -0.06 / -3.06%
             |             
            
                1.96
             |           
            
                1.96
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.93
             |                     
            
                1.90
             |                                 
            
                870
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2018
             | 
            
                +0.02 / +1.03%
             |             
            
                1.81
             |           
            
                1.96
             |               
            
                1.81
             |                           
            
                1.96
             | 
            
                1.89
             |                     
            
                1.96
             |                                 
            
                5,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/20/2018
             | 
            
                +0.09 / +4.86%
             |             
            
                1.94
             |           
            
                1.94
             |               
            
                1.94
             |                           
            
                1.94
             | 
            
                1.94
             |                     
            
                1.94
             |                                 
            
                60
             |            
            
                 
             |                                       
         
    
        
            | 
                7/19/2018
             | 
            
                -0.03 / -1.60%
             |             
            
                1.87
             |           
            
                1.87
             |               
            
                1.85
             |                           
            
                1.85
             | 
            
                1.86
             |                     
            
                1.85
             |                                 
            
                940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/18/2018
             | 
            
                +0.11 / +6.21%
             |             
            
                1.67
             |           
            
                1.88
             |               
            
                1.67
             |                           
            
                1.88
             | 
            
                1.83
             |                     
            
                1.88
             |                                 
            
                14,750
             |            
            
                 
             |                                       
         
    
        
            | 
                7/17/2018
             | 
            
                +0.07 / +4.12%
             |             
            
                1.65
             |           
            
                1.77
             |               
            
                1.65
             |                           
            
                1.77
             | 
            
                1.77
             |                     
            
                1.77
             |                                 
            
                40
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/16/2018
             | 
            
                -0.10 / -5.56%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.75
             |                     
            
                1.70
             |                                 
            
                9,160
             |            
            
                 
             |                                       
         
    
        
            | 
                7/13/2018
             | 
            
                +0.08 / +4.65%
             |             
            
                1.84
             |           
            
                1.84
             |               
            
                1.73
             |                           
            
                1.80
             | 
            
                1.80
             |                     
            
                1.80
             |                                 
            
                4,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2018
             | 
            
                -0.04 / -2.27%
             |             
            
                1.66
             |           
            
                1.73
             |               
            
                1.66
             |                           
            
                1.72
             | 
            
                1.69
             |                     
            
                1.72
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2018
             | 
            
                +0.06 / +3.53%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.76
             |                           
            
                1.76
             | 
            
                1.78
             |                     
            
                1.76
             |                                 
            
                1,020
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2018
             | 
            
                +0.09 / +5.59%
             |             
            
                1.63
             |           
            
                1.70
             |               
            
                1.63
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                210
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2018
             | 
            
                -0.01 / -0.62%
             |             
            
                1.68
             |           
            
                1.71
             |               
            
                1.61
             |                           
            
                1.61
             | 
            
                1.65
             |                     
            
                1.61
             |                                 
            
                14,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/6/2018
             | 
            
                +0.04 / +2.53%
             |             
            
                1.60
             |           
            
                1.68
             |               
            
                1.60
             |                           
            
                1.62
             | 
            
                1.63
             |                     
            
                1.62
             |                                 
            
                760
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2018
             | 
            
                -0.09 / -5.39%
             |             
            
                1.78
             |           
            
                1.78
             |               
            
                1.57
             |                           
            
                1.58
             | 
            
                1.66
             |                     
            
                1.58
             |                                 
            
                31,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2018
             | 
            
                -0.11 / -6.18%
             |             
            
                1.68
             |           
            
                1.78
             |               
            
                1.67
             |                           
            
                1.67
             | 
            
                1.70
             |                     
            
                1.67
             |                                 
            
                16,330
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2018
             | 
            
                -0.12 / -6.32%
             |             
            
                1.90
             |           
            
                1.90
             |               
            
                1.77
             |                           
            
                1.78
             | 
            
                1.85
             |                     
            
                1.78
             |                                 
            
                3,250
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2018
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                1.90
             |               
            
                1.88
             |                           
            
                1.90
             | 
            
                1.90
             |                     
            
                1.90
             |                                 
            
                20,530
             |            
            
                 
             |                                       
         
    
        
            | 
                6/29/2018
             | 
            
                +0.02 / +1.06%
             |             
            
                1.91
             |           
            
                1.91
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.91
             |                     
            
                1.90
             |                                 
            
                20,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2018
             | 
            
                -0.08 / -4.08%
             |             
            
                1.89
             |           
            
                1.95
             |               
            
                1.84
             |                           
            
                1.88
             | 
            
                1.89
             |                     
            
                1.88
             |                                 
            
                1,890
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2018
             | 
            
                +0.01 / +0.51%
             |             
            
                1.95
             |           
            
                1.99
             |               
            
                1.87
             |                           
            
                1.96
             | 
            
                1.94
             |                     
            
                1.96
             |                                 
            
                14,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                1.95
             | 
            
                1.90
             |                     
            
                1.95
             |                                 
            
                6,830
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2018
             | 
            
                -0.12 / -5.80%
             |             
            
                2.05
             |           
            
                2.05
             |               
            
                1.93
             |                           
            
                1.95
             | 
            
                1.97
             |                     
            
                1.95
             |                                 
            
                24,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/22/2018
             | 
            
                -0.02 / -0.96%
             |             
            
                2.19
             |           
            
                2.19
             |               
            
                1.98
             |                           
            
                2.07
             | 
            
                2.11
             |                     
            
                2.07
             |                                 
            
                2,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2018
             | 
            
                +0.11 / +5.56%
             |             
            
                2.11
             |           
            
                2.11
             |               
            
                1.92
             |                           
            
                2.09
             | 
            
                2.06
             |                     
            
                2.09
             |                                 
            
                270
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2018
             | 
            
                -0.12 / -5.71%
             |             
            
                1.96
             |           
            
                2.20
             |               
            
                1.96
             |                           
            
                1.98
             | 
            
                2.19
             |                     
            
                1.98
             |                                 
            
                4,570
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2018
             | 
            
                -0.15 / -6.67%
             |             
            
                2.10
             |           
            
                2.11
             |               
            
                2.10
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                12,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2018
             | 
            
                -0.05 / -2.17%
             |             
            
                2.29
             |           
            
                2.29
             |               
            
                2.15
             |                           
            
                2.25
             | 
            
                2.25
             |                     
            
                2.25
             |                                 
            
                4,670
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2018
             | 
            
                -0.07 / -2.95%
             |             
            
                2.25
             |           
            
                2.30
             |               
            
                2.21
             |                           
            
                2.30
             | 
            
                2.21
             |                     
            
                2.30
             |                                 
            
                278,730
             |  
            
                 
             |                                                              
             
    
         
    
    
 |