| 
                 
                    Closing price on 10/16/2014
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    14.40 | 
                 
                
                    | High | 
                    14.40 | 
                 
                
                    | Low | 
                    13.10 | 
                     
                
                    | Volume | 
                    17,145 | 
                                 
                
                    | Split-adjusted Price | 
                    6.12 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PTI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/16/2014
             | 
            
                -1.40 / -9.66%
             |             
            
                14.40
             |           
            
                14.40
             |               
            
                13.10
             |                           
            
                13.10
             | 
            
                13.10
             |                     
            
                6.12
             |                                 
            
                17,145
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2014
             | 
            
                +0.80 / +5.84%
             |             
            
                14.50
             |           
            
                14.50
             |               
            
                14.50
             |                           
            
                14.50
             | 
            
                14.50
             |                     
            
                6.77
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2014
             | 
            
                0.00 / 0.00%
             |             
            
                13.50
             |           
            
                13.90
             |               
            
                13.50
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                6.40
             |                                 
            
                81,916
             |            
            
                 
             |                                       
         
    
        
            | 
                10/13/2014
             | 
            
                +0.30 / +2.24%
             |             
            
                13.50
             |           
            
                13.70
             |               
            
                13.40
             |                           
            
                13.70
             | 
            
                13.70
             |                     
            
                6.40
             |                                 
            
                41,222
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2014
             | 
            
                0.00 / 0.00%
             |             
            
                13.40
             |           
            
                13.50
             |               
            
                13.20
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                6.26
             |                                 
            
                23,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2014
             | 
            
                0.00 / 0.00%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.30
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                6.26
             |                                 
            
                3,430
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2014
             | 
            
                +0.50 / +3.88%
             |             
            
                13.00
             |           
            
                13.40
             |               
            
                12.90
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                6.26
             |                                 
            
                32,830
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2014
             | 
            
                -0.30 / -2.27%
             |             
            
                12.70
             |           
            
                13.20
             |               
            
                12.70
             |                           
            
                12.90
             | 
            
                12.90
             |                     
            
                6.03
             |                                 
            
                25,979
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/6/2014
             | 
            
                -0.20 / -1.49%
             |             
            
                13.60
             |           
            
                13.60
             |               
            
                13.20
             |                           
            
                13.20
             | 
            
                13.20
             |                     
            
                6.17
             |                                 
            
                75,730
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2014
             | 
            
                +0.60 / +4.69%
             |             
            
                13.80
             |           
            
                13.80
             |               
            
                13.00
             |                           
            
                13.40
             | 
            
                13.40
             |                     
            
                6.26
             |                                 
            
                37,570
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/2/2014
             | 
            
                +0.60 / +4.92%
             |             
            
                12.40
             |           
            
                12.80
             |               
            
                12.40
             |                           
            
                12.80
             | 
            
                12.80
             |                     
            
                5.98
             |                                 
            
                41,358
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2014
             | 
            
                +0.20 / +1.67%
             |             
            
                12.00
             |           
            
                12.40
             |               
            
                12.00
             |                           
            
                12.20
             | 
            
                12.20
             |                     
            
                5.70
             |                                 
            
                26,230
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2014
             | 
            
                0.00 / 0.00%
             |             
            
                12.00
             |           
            
                12.20
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                5.61
             |                                 
            
                13,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2014
             | 
            
                0.00 / 0.00%
             |             
            
                12.60
             |           
            
                12.60
             |               
            
                12.00
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                5.61
             |                                 
            
                16,381
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2014
             | 
            
                +0.30 / +2.56%
             |             
            
                11.70
             |           
            
                12.50
             |               
            
                11.70
             |                           
            
                12.00
             | 
            
                12.00
             |                     
            
                5.61
             |                                 
            
                24,279
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2014
             | 
            
                +0.50 / +4.46%
             |             
            
                11.00
             |           
            
                11.70
             |               
            
                11.00
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                5.47
             |                                 
            
                2,640
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2014
             | 
            
                -0.50 / -4.27%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.20
             |                           
            
                11.20
             | 
            
                11.20
             |                     
            
                5.23
             |                                 
            
                18,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2014
             | 
            
                -0.10 / -0.85%
             |             
            
                10.90
             |           
            
                11.70
             |               
            
                10.90
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                5.47
             |                                 
            
                1,766
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/22/2014
             | 
            
                -0.10 / -0.84%
             |             
            
                11.70
             |           
            
                11.80
             |               
            
                11.50
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                5.51
             |                                 
            
                5,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2014
             | 
            
                +0.50 / +4.39%
             |             
            
                10.90
             |           
            
                12.40
             |               
            
                10.90
             |                           
            
                11.90
             | 
            
                11.90
             |                     
            
                5.56
             |                                 
            
                57,346
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2014
             | 
            
                -0.20 / -1.72%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.40
             |                           
            
                11.40
             | 
            
                11.40
             |                     
            
                5.33
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2014
             | 
            
                +0.10 / +0.87%
             |             
            
                11.30
             |           
            
                11.60
             |               
            
                11.30
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                5.42
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2014
             | 
            
                -0.10 / -0.86%
             |             
            
                11.50
             |           
            
                11.50
             |               
            
                11.50
             |                           
            
                11.50
             | 
            
                11.50
             |                     
            
                5.37
             |                                 
            
                52,488
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2014
             | 
            
                -0.10 / -0.85%
             |             
            
                11.60
             |           
            
                11.60
             |               
            
                11.60
             |                           
            
                11.60
             | 
            
                11.60
             |                     
            
                5.42
             |                                 
            
                2,003
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2014
             | 
            
                -0.10 / -0.85%
             |             
            
                11.70
             |           
            
                11.70
             |               
            
                11.70
             |                           
            
                11.70
             | 
            
                11.70
             |                     
            
                5.47
             |                                 
            
                256
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2014
             | 
            
                +0.50 / +4.42%
             |             
            
                10.40
             |           
            
                11.80
             |               
            
                10.40
             |                           
            
                11.80
             | 
            
                11.80
             |                     
            
                5.51
             |                                 
            
                31,940
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2014
             | 
            
                +0.40 / +3.67%
             |             
            
                11.00
             |           
            
                11.30
             |               
            
                11.00
             |                           
            
                11.30
             | 
            
                11.30
             |                     
            
                5.28
             |                                 
            
                6,236
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2014
             | 
            
                0.00 / 0.00%
             |             
            
                11.00
             |           
            
                11.00
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                5.09
             |                                 
            
                2,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2014
             | 
            
                -0.20 / -1.80%
             |             
            
                11.10
             |           
            
                11.50
             |               
            
                10.90
             |                           
            
                10.90
             | 
            
                10.90
             |                     
            
                5.09
             |                                 
            
                7,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2014
             | 
            
                0.00 / 0.00%
             |             
            
                11.10
             |           
            
                11.10
             |               
            
                11.10
             |                           
            
                11.10
             | 
            
                11.10
             |                     
            
                5.19
             |                                 
            
                76
             |  
            
                 
             |                                                              
             
    
         
    
    
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