| 
                 
                    Closing price on 6/11/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    2.48 | 
                 
                
                    | High | 
                    2.48 | 
                 
                
                    | Low | 
                    2.20 | 
                     
                
                    | Volume | 
                    65,190 | 
                                 
                
                    | Split-adjusted Price | 
                    2.20 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PXT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/11/2018
             | 
            
                -0.16 / -6.78%
             |             
            
                2.48
             |           
            
                2.48
             |               
            
                2.20
             |                           
            
                2.20
             | 
            
                2.25
             |                     
            
                2.20
             |                                 
            
                65,190
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2018
             | 
            
                -0.04 / -1.67%
             |             
            
                2.36
             |           
            
                2.36
             |               
            
                2.36
             |                           
            
                2.36
             | 
            
                2.36
             |                     
            
                2.36
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2018
             | 
            
                -0.06 / -2.44%
             |             
            
                2.33
             |           
            
                2.45
             |               
            
                2.33
             |                           
            
                2.40
             | 
            
                2.37
             |                     
            
                2.40
             |                                 
            
                6,340
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2018
             | 
            
                +0.02 / +0.82%
             |             
            
                2.29
             |           
            
                2.46
             |               
            
                2.28
             |                           
            
                2.46
             | 
            
                2.37
             |                     
            
                2.46
             |                                 
            
                10,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2018
             | 
            
                +0.02 / +0.83%
             |             
            
                2.42
             |           
            
                2.45
             |               
            
                2.42
             |                           
            
                2.44
             | 
            
                2.44
             |                     
            
                2.44
             |                                 
            
                22,580
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2018
             | 
            
                -0.18 / -6.92%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.42
             |                           
            
                2.42
             | 
            
                2.42
             |                     
            
                2.42
             |                                 
            
                173,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.50
             |           
            
                2.60
             |               
            
                2.42
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                90
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.50
             |           
            
                2.60
             |               
            
                2.50
             |                           
            
                2.60
             | 
            
                2.56
             |                     
            
                2.60
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.63
             |           
            
                2.63
             |               
            
                2.42
             |                           
            
                2.60
             | 
            
                2.57
             |                     
            
                2.60
             |                                 
            
                640
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2018
             | 
            
                +0.11 / +4.42%
             |             
            
                2.65
             |           
            
                2.65
             |               
            
                2.50
             |                           
            
                2.60
             | 
            
                2.63
             |                     
            
                2.60
             |                                 
            
                760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2018
             | 
            
                -0.18 / -6.74%
             |             
            
                2.49
             |           
            
                2.49
             |               
            
                2.49
             |                           
            
                2.49
             | 
            
                2.49
             |                     
            
                2.49
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2018
             | 
            
                +0.12 / +4.71%
             |             
            
                2.45
             |           
            
                2.67
             |               
            
                2.45
             |                           
            
                2.67
             | 
            
                2.67
             |                     
            
                2.67
             |                                 
            
                130
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2018
             | 
            
                -0.16 / -5.90%
             |             
            
                2.55
             |           
            
                2.55
             |               
            
                2.55
             |                           
            
                2.55
             | 
            
                2.55
             |                     
            
                2.55
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2018
             | 
            
                -0.04 / -1.45%
             |             
            
                2.60
             |           
            
                2.76
             |               
            
                2.56
             |                           
            
                2.71
             | 
            
                2.57
             |                     
            
                2.71
             |                                 
            
                28,370
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2018
             | 
            
                +0.12 / +4.56%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.63
             |                           
            
                2.75
             | 
            
                2.77
             |                     
            
                2.75
             |                                 
            
                10,470
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2018
             | 
            
                -0.16 / -5.73%
             |             
            
                2.80
             |           
            
                2.80
             |               
            
                2.62
             |                           
            
                2.63
             | 
            
                2.65
             |                     
            
                2.63
             |                                 
            
                6,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2018
             | 
            
                -0.20 / -6.69%
             |             
            
                2.85
             |           
            
                2.89
             |               
            
                2.79
             |                           
            
                2.79
             | 
            
                2.82
             |                     
            
                2.79
             |                                 
            
                35,780
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2018
             | 
            
                +0.14 / +4.91%
             |             
            
                3.04
             |           
            
                3.04
             |               
            
                2.85
             |                           
            
                2.99
             | 
            
                2.98
             |                     
            
                2.99
             |                                 
            
                5,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2018
             | 
            
                +0.06 / +2.15%
             |             
            
                2.96
             |           
            
                2.96
             |               
            
                2.85
             |                           
            
                2.85
             | 
            
                2.86
             |                     
            
                2.85
             |                                 
            
                7,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2018
             | 
            
                -0.10 / -3.46%
             |             
            
                2.71
             |           
            
                2.80
             |               
            
                2.69
             |                           
            
                2.79
             | 
            
                2.69
             |                     
            
                2.79
             |                                 
            
                217,560
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2018
             | 
            
                -0.03 / -1.03%
             |             
            
                2.92
             |           
            
                2.92
             |               
            
                2.89
             |                           
            
                2.89
             | 
            
                2.91
             |                     
            
                2.89
             |                                 
            
                6,750
             |            
            
                 
             |                                       
         
    
        
            | 
                5/11/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.90
             |           
            
                2.92
             |               
            
                2.90
             |                           
            
                2.92
             | 
            
                2.92
             |                     
            
                2.92
             |                                 
            
                6,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2018
             | 
            
                -0.01 / -0.34%
             |             
            
                3.00
             |           
            
                3.10
             |               
            
                2.92
             |                           
            
                2.92
             | 
            
                2.99
             |                     
            
                2.92
             |                                 
            
                14,810
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.00
             |               
            
                2.93
             |                           
            
                2.93
             | 
            
                2.98
             |                     
            
                2.93
             |                                 
            
                6,720
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2018
             | 
            
                -0.12 / -3.93%
             |             
            
                2.93
             |           
            
                3.00
             |               
            
                2.93
             |                           
            
                2.93
             | 
            
                2.93
             |                     
            
                2.93
             |                                 
            
                33,430
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.00
             |           
            
                3.05
             |               
            
                2.97
             |                           
            
                3.05
             | 
            
                3.02
             |                     
            
                3.05
             |                                 
            
                4,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/4/2018
             | 
            
                +0.03 / +0.99%
             |             
            
                3.08
             |           
            
                3.08
             |               
            
                3.05
             |                           
            
                3.05
             | 
            
                3.07
             |                     
            
                3.05
             |                                 
            
                220
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2018
             | 
            
                -0.03 / -0.98%
             |             
            
                2.92
             |           
            
                3.03
             |               
            
                2.91
             |                           
            
                3.02
             | 
            
                2.93
             |                     
            
                3.02
             |                                 
            
                2,730
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2018
             | 
            
                -0.05 / -1.61%
             |             
            
                3.09
             |           
            
                3.09
             |               
            
                2.89
             |                           
            
                3.05
             | 
            
                3.07
             |                     
            
                3.05
             |                                 
            
                6,190
             |            
            
                 
             |                                       
         
    
        
            | 
                4/27/2018
             | 
            
                +0.10 / +3.33%
             |             
            
                3.00
             |           
            
                3.10
             |               
            
                3.00
             |                           
            
                3.10
             | 
            
                3.06
             |                     
            
                3.10
             |                                 
            
                6,530
             |  
            
                 
             |                                                              
             
    
         
    
    
 |