| 
                 
                    Closing price on 6/10/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    24.30 | 
                 
                
                    | High | 
                    24.50 | 
                 
                
                    | Low | 
                    24.10 | 
                     
                
                    | Volume | 
                    17,920 | 
                                 
                
                    | Split-adjusted Price | 
                    12.01 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/10/2016
             | 
            
                -0.10 / -0.41%
             |             
            
                24.30
             |           
            
                24.50
             |               
            
                24.10
             |                           
            
                24.10
             | 
            
                24.36
             |                     
            
                12.01
             |                                 
            
                17,920
             |            
            
                 
             |                                       
         
    
        
            | 
                6/9/2016
             | 
            
                +0.20 / +0.83%
             |             
            
                24.00
             |           
            
                24.80
             |               
            
                23.90
             |                           
            
                24.20
             | 
            
                24.09
             |                     
            
                12.06
             |                                 
            
                8,409
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2016
             | 
            
                -2.00 / -7.69%
             |             
            
                26.00
             |           
            
                26.00
             |               
            
                23.80
             |                           
            
                24.00
             | 
            
                24.35
             |                     
            
                11.96
             |                                 
            
                2,612,943
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2016
             | 
            
                +0.20 / +0.78%
             |             
            
                25.80
             |           
            
                26.00
             |               
            
                25.80
             |                           
            
                26.00
             | 
            
                25.82
             |                     
            
                12.96
             |                                 
            
                4,459,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2016
             | 
            
                +2.30 / +9.79%
             |             
            
                23.60
             |           
            
                25.80
             |               
            
                23.60
             |                           
            
                25.80
             | 
            
                25.77
             |                     
            
                12.86
             |                                 
            
                63,697
             |            
            
                 
             |                                       
         
    
        
            | 
                6/3/2016
             | 
            
                +0.20 / +0.86%
             |             
            
                24.00
             |           
            
                24.00
             |               
            
                23.50
             |                           
            
                23.50
             | 
            
                23.86
             |                     
            
                11.71
             |                                 
            
                30,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/2/2016
             | 
            
                +0.10 / +0.43%
             |             
            
                23.20
             |           
            
                23.50
             |               
            
                23.20
             |                           
            
                23.30
             | 
            
                23.29
             |                     
            
                11.61
             |                                 
            
                5,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2016
             | 
            
                -0.10 / -0.43%
             |             
            
                23.40
             |           
            
                23.40
             |               
            
                23.20
             |                           
            
                23.20
             | 
            
                23.40
             |                     
            
                11.56
             |                                 
            
                5,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2016
             | 
            
                0.00 / 0.00%
             |             
            
                23.30
             |           
            
                23.30
             |               
            
                23.30
             |                           
            
                23.30
             | 
            
                23.30
             |                     
            
                11.61
             |                                 
            
                6,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2016
             | 
            
                0.00 / 0.00%
             |             
            
                23.30
             |           
            
                23.30
             |               
            
                23.30
             |                           
            
                23.30
             | 
            
                23.30
             |                     
            
                11.61
             |                                 
            
                644
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2016
             | 
            
                0.00 / 0.00%
             |             
            
                23.30
             |           
            
                23.30
             |               
            
                23.30
             |                           
            
                23.30
             | 
            
                23.30
             |                     
            
                11.61
             |                                 
            
                1,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                23.30
             |           
            
                23.30
             |               
            
                23.30
             |                           
            
                23.30
             | 
            
                23.30
             |                     
            
                11.61
             |                                 
            
                1,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2016
             | 
            
                -0.10 / -0.43%
             |             
            
                23.30
             |           
            
                23.50
             |               
            
                23.30
             |                           
            
                23.30
             | 
            
                23.39
             |                     
            
                11.61
             |                                 
            
                30,634
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2016
             | 
            
                +0.20 / +0.86%
             |             
            
                23.30
             |           
            
                23.40
             |               
            
                23.30
             |                           
            
                23.40
             | 
            
                23.35
             |                     
            
                11.66
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2016
             | 
            
                -0.80 / -3.33%
             |             
            
                23.30
             |           
            
                23.70
             |               
            
                23.20
             |                           
            
                23.20
             | 
            
                23.36
             |                     
            
                11.56
             |                                 
            
                20,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2016
             | 
            
                +0.50 / +2.13%
             |             
            
                23.50
             |           
            
                24.00
             |               
            
                22.50
             |                           
            
                24.00
             | 
            
                23.38
             |                     
            
                11.96
             |                                 
            
                26,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2016
             | 
            
                0.00 / 0.00%
             |             
            
                23.10
             |           
            
                23.50
             |               
            
                23.10
             |                           
            
                23.50
             | 
            
                23.50
             |                     
            
                11.71
             |                                 
            
                33,634
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2016
             | 
            
                +0.10 / +0.43%
             |             
            
                23.30
             |           
            
                23.60
             |               
            
                23.30
             |                           
            
                23.50
             | 
            
                23.51
             |                     
            
                11.71
             |                                 
            
                3,615
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2016
             | 
            
                -0.10 / -0.43%
             |             
            
                23.50
             |           
            
                23.50
             |               
            
                23.10
             |                           
            
                23.40
             | 
            
                23.50
             |                     
            
                11.66
             |                                 
            
                25,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2016
             | 
            
                +0.50 / +2.17%
             |             
            
                23.10
             |           
            
                23.50
             |               
            
                23.10
             |                           
            
                23.50
             | 
            
                23.10
             |                     
            
                11.71
             |                                 
            
                17,880
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2016
             | 
            
                -0.20 / -0.86%
             |             
            
                23.10
             |           
            
                23.10
             |               
            
                23.00
             |                           
            
                23.00
             | 
            
                23.01
             |                     
            
                11.46
             |                                 
            
                12,592
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2016
             | 
            
                -0.30 / -1.28%
             |             
            
                23.10
             |           
            
                23.50
             |               
            
                23.10
             |                           
            
                23.20
             | 
            
                23.50
             |                     
            
                11.56
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2016
             | 
            
                +0.40 / +1.73%
             |             
            
                23.20
             |           
            
                23.50
             |               
            
                23.10
             |                           
            
                23.50
             | 
            
                23.15
             |                     
            
                11.71
             |                                 
            
                11,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2016
             | 
            
                0.00 / 0.00%
             |             
            
                23.10
             |           
            
                23.40
             |               
            
                23.00
             |                           
            
                23.10
             | 
            
                23.16
             |                     
            
                11.51
             |                                 
            
                28,811
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2016
             | 
            
                -0.20 / -0.86%
             |             
            
                23.10
             |           
            
                23.10
             |               
            
                23.10
             |                           
            
                23.10
             | 
            
                23.10
             |                     
            
                11.51
             |                                 
            
                1,340
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2016
             | 
            
                -0.10 / -0.43%
             |             
            
                23.40
             |           
            
                23.50
             |               
            
                23.00
             |                           
            
                23.30
             | 
            
                23.19
             |                     
            
                11.61
             |                                 
            
                13,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2016
             | 
            
                +0.90 / +4.00%
             |             
            
                22.00
             |           
            
                23.50
             |               
            
                22.00
             |                           
            
                23.40
             | 
            
                23.35
             |                     
            
                11.66
             |                                 
            
                44,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2016
             | 
            
                -0.60 / -2.60%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                22.50
             |                           
            
                22.50
             | 
            
                22.50
             |                     
            
                11.21
             |                                 
            
                3,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2016
             | 
            
                +2.10 / +10.00%
             |             
            
                21.30
             |           
            
                23.10
             |               
            
                21.30
             |                           
            
                23.10
             | 
            
                22.66
             |                     
            
                11.51
             |                                 
            
                14,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2016
             | 
            
                -0.20 / -0.94%
             |             
            
                20.00
             |           
            
                21.10
             |               
            
                19.10
             |                           
            
                21.00
             | 
            
                20.76
             |                     
            
                10.47
             |                                 
            
                14,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |