| 
                 
                    Closing price on 3/1/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.19 | 
                 
                
                    | High | 
                    4.19 | 
                 
                
                    | Low | 
                    4.19 | 
                     
                
                    | Volume | 
                    1,020 | 
                                 
                
                    | Split-adjusted Price | 
                    4.19 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PXT Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/1/2018
             | 
            
                +0.07 / +1.70%
             |             
            
                4.19
             |           
            
                4.19
             |               
            
                4.19
             |                           
            
                4.19
             | 
            
                4.19
             |                     
            
                4.19
             |                                 
            
                1,020
             |            
            
                 
             |                                       
         
    
        
            | 
                2/28/2018
             | 
            
                +0.02 / +0.49%
             |             
            
                4.19
             |           
            
                4.25
             |               
            
                4.09
             |                           
            
                4.12
             | 
            
                4.14
             |                     
            
                4.12
             |                                 
            
                102,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/27/2018
             | 
            
                -0.09 / -2.15%
             |             
            
                4.19
             |           
            
                4.20
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.11
             |                     
            
                4.10
             |                                 
            
                26,290
             |            
            
                 
             |                                       
         
    
        
            | 
                2/26/2018
             | 
            
                +0.02 / +0.48%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.05
             |                           
            
                4.19
             | 
            
                4.12
             |                     
            
                4.19
             |                                 
            
                46,330
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/23/2018
             | 
            
                +0.07 / +1.71%
             |             
            
                4.10
             |           
            
                4.17
             |               
            
                4.10
             |                           
            
                4.17
             | 
            
                4.14
             |                     
            
                4.17
             |                                 
            
                32,150
             |            
            
                 
             |                                       
         
    
        
            | 
                2/22/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.15
             |           
            
                4.15
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.08
             |                     
            
                4.10
             |                                 
            
                34,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/21/2018
             | 
            
                +0.10 / +2.50%
             |             
            
                4.00
             |           
            
                4.12
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.09
             |                     
            
                4.10
             |                                 
            
                153,920
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                3.95
             |                           
            
                4.00
             | 
            
                3.98
             |                     
            
                4.00
             |                                 
            
                14,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2018
             | 
            
                0.00 / 0.00%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.03
             |                     
            
                4.00
             |                                 
            
                14,520
             |            
            
                 
             |                                       
         
    
        
            | 
                2/9/2018
             | 
            
                -0.06 / -1.48%
             |             
            
                3.80
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                4.00
             | 
            
                3.81
             |                     
            
                4.00
             |                                 
            
                25,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/8/2018
             | 
            
                -0.01 / -0.25%
             |             
            
                4.29
             |           
            
                4.29
             |               
            
                3.82
             |                           
            
                4.06
             | 
            
                4.05
             |                     
            
                4.06
             |                                 
            
                8,150
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2018
             | 
            
                +0.08 / +2.01%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                3.99
             |                           
            
                4.07
             | 
            
                4.09
             |                     
            
                4.07
             |                                 
            
                46,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2018
             | 
            
                -0.29 / -6.78%
             |             
            
                3.99
             |           
            
                4.56
             |               
            
                3.99
             |                           
            
                3.99
             | 
            
                3.99
             |                     
            
                3.99
             |                                 
            
                152,780
             |            
            
                 
             |                                       
         
    
        
            | 
                2/5/2018
             | 
            
                -0.32 / -6.96%
             |             
            
                4.30
             |           
            
                4.60
             |               
            
                4.28
             |                           
            
                4.28
             | 
            
                4.37
             |                     
            
                4.28
             |                                 
            
                34,410
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/2/2018
             | 
            
                -0.09 / -1.92%
             |             
            
                4.45
             |           
            
                4.65
             |               
            
                4.38
             |                           
            
                4.60
             | 
            
                4.41
             |                     
            
                4.60
             |                                 
            
                11,110
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2018
             | 
            
                +0.19 / +4.22%
             |             
            
                4.73
             |           
            
                4.73
             |               
            
                4.22
             |                           
            
                4.69
             | 
            
                4.55
             |                     
            
                4.69
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2018
             | 
            
                -0.25 / -5.26%
             |             
            
                4.74
             |           
            
                4.76
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.71
             |                     
            
                4.50
             |                                 
            
                38,180
             |            
            
                 
             |                                       
         
    
        
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |