| 
                 
                    Closing price on 1/30/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.85 | 
                 
                
                    | High | 
                    4.88 | 
                 
                
                    | Low | 
                    4.54 | 
                     
                
                    | Volume | 
                    74,640 | 
                                 
                
                    | Split-adjusted Price | 
                    4.75 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PXT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/30/2018
             | 
            
                -0.13 / -2.66%
             |             
            
                4.85
             |           
            
                4.88
             |               
            
                4.54
             |                           
            
                4.75
             | 
            
                4.70
             |                     
            
                4.75
             |                                 
            
                74,640
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2018
             | 
            
                +0.23 / +4.95%
             |             
            
                4.65
             |           
            
                4.89
             |               
            
                4.40
             |                           
            
                4.88
             | 
            
                4.71
             |                     
            
                4.88
             |                                 
            
                2,080
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2018
             | 
            
                -0.05 / -1.06%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.65
             |                           
            
                4.65
             | 
            
                4.67
             |                     
            
                4.65
             |                                 
            
                49,430
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2018
             | 
            
                -0.29 / -5.81%
             |             
            
                4.99
             |           
            
                4.99
             |               
            
                4.68
             |                           
            
                4.70
             | 
            
                4.76
             |                     
            
                4.70
             |                                 
            
                79,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2018
             | 
            
                +0.25 / +5.27%
             |             
            
                4.78
             |           
            
                5.05
             |               
            
                4.78
             |                           
            
                4.99
             | 
            
                4.94
             |                     
            
                4.99
             |                                 
            
                81,920
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2018
             | 
            
                +0.01 / +0.21%
             |             
            
                4.70
             |           
            
                4.79
             |               
            
                4.69
             |                           
            
                4.74
             | 
            
                4.69
             |                     
            
                4.74
             |                                 
            
                46,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2018
             | 
            
                -0.12 / -2.47%
             |             
            
                4.64
             |           
            
                4.85
             |               
            
                4.60
             |                           
            
                4.73
             | 
            
                4.64
             |                     
            
                4.73
             |                                 
            
                80,990
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.85
             |           
            
                4.95
             |               
            
                4.60
             |                           
            
                4.85
             | 
            
                4.84
             |                     
            
                4.85
             |                                 
            
                69,860
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2018
             | 
            
                -0.34 / -6.55%
             |             
            
                5.19
             |           
            
                5.19
             |               
            
                4.83
             |                           
            
                4.85
             | 
            
                4.91
             |                     
            
                4.85
             |                                 
            
                142,910
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2018
             | 
            
                +0.27 / +5.49%
             |             
            
                5.25
             |           
            
                5.25
             |               
            
                4.92
             |                           
            
                5.19
             | 
            
                5.15
             |                     
            
                5.19
             |                                 
            
                264,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2018
             | 
            
                +0.32 / +6.96%
             |             
            
                4.92
             |           
            
                4.92
             |               
            
                4.92
             |                           
            
                4.92
             | 
            
                4.92
             |                     
            
                4.92
             |                                 
            
                113,830
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2018
             | 
            
                +0.30 / +6.98%
             |             
            
                4.49
             |           
            
                4.60
             |               
            
                4.45
             |                           
            
                4.60
             | 
            
                4.53
             |                     
            
                4.60
             |                                 
            
                243,480
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.39
             |           
            
                4.50
             |               
            
                4.21
             |                           
            
                4.30
             | 
            
                4.36
             |                     
            
                4.30
             |                                 
            
                190,850
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.23
             |           
            
                4.30
             |               
            
                4.20
             |                           
            
                4.30
             | 
            
                4.21
             |                     
            
                4.30
             |                                 
            
                28,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2018
             | 
            
                -0.05 / -1.15%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.21
             |                           
            
                4.30
             | 
            
                4.27
             |                     
            
                4.30
             |                                 
            
                65,340
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.30
             |           
            
                4.40
             |               
            
                4.26
             |                           
            
                4.35
             | 
            
                4.32
             |                     
            
                4.35
             |                                 
            
                44,910
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2018
             | 
            
                -0.05 / -1.14%
             |             
            
                4.30
             |           
            
                4.50
             |               
            
                4.20
             |                           
            
                4.35
             | 
            
                4.30
             |                     
            
                4.35
             |                                 
            
                42,810
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2018
             | 
            
                +0.13 / +3.04%
             |             
            
                4.50
             |           
            
                4.56
             |               
            
                4.20
             |                           
            
                4.40
             | 
            
                4.33
             |                     
            
                4.40
             |                                 
            
                51,990
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/2/2018
             | 
            
                -0.31 / -6.77%
             |             
            
                4.50
             |           
            
                4.68
             |               
            
                4.27
             |                           
            
                4.27
             | 
            
                4.38
             |                     
            
                4.27
             |                                 
            
                115,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2017
             | 
            
                -0.02 / -0.43%
             |             
            
                4.75
             |           
            
                4.75
             |               
            
                4.41
             |                           
            
                4.58
             | 
            
                4.59
             |                     
            
                4.58
             |                                 
            
                17,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2017
             | 
            
                +0.10 / +2.22%
             |             
            
                4.56
             |           
            
                4.70
             |               
            
                4.41
             |                           
            
                4.60
             | 
            
                4.55
             |                     
            
                4.60
             |                                 
            
                16,050
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2017
             | 
            
                +0.20 / +4.65%
             |             
            
                4.48
             |           
            
                4.60
             |               
            
                4.36
             |                           
            
                4.50
             | 
            
                4.45
             |                     
            
                4.50
             |                                 
            
                91,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.13
             |           
            
                4.54
             |               
            
                4.13
             |                           
            
                4.30
             | 
            
                4.39
             |                     
            
                4.30
             |                                 
            
                76,090
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2017
             | 
            
                +0.07 / +1.65%
             |             
            
                4.30
             |           
            
                4.35
             |               
            
                4.11
             |                           
            
                4.30
             | 
            
                4.19
             |                     
            
                4.30
             |                                 
            
                34,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2017
             | 
            
                -0.26 / -5.79%
             |             
            
                4.49
             |           
            
                4.49
             |               
            
                4.23
             |                           
            
                4.23
             | 
            
                4.31
             |                     
            
                4.23
             |                                 
            
                2,320
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.59
             |           
            
                4.59
             |               
            
                4.18
             |                           
            
                4.49
             | 
            
                4.41
             |                     
            
                4.49
             |                                 
            
                28,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2017
             | 
            
                +0.29 / +6.90%
             |             
            
                3.95
             |           
            
                4.49
             |               
            
                3.95
             |                           
            
                4.49
             | 
            
                4.41
             |                     
            
                4.49
             |                                 
            
                193,220
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2017
             | 
            
                -0.20 / -4.55%
             |             
            
                4.20
             |           
            
                4.40
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.13
             |                     
            
                4.20
             |                                 
            
                19,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/18/2017
             | 
            
                +0.20 / +4.76%
             |             
            
                4.20
             |           
            
                4.47
             |               
            
                4.20
             |                           
            
                4.40
             | 
            
                4.32
             |                     
            
                4.40
             |                                 
            
                2,950
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                3.95
             |                           
            
                4.20
             | 
            
                4.09
             |                     
            
                4.20
             |                                 
            
                22,960
             |  
            
                 
             |                                                              
             
    
         
    
    
 |