| 
                 
                    Closing price on 6/2/2014
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    28.60 | 
                 
                
                    | High | 
                    28.60 | 
                 
                
                    | Low | 
                    27.60 | 
                     
                
                    | Volume | 
                    404,220 | 
                                 
                
                    | Split-adjusted Price | 
                    9.25 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PGS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/2/2014
             | 
            
                -1.00 / -3.50%
             |             
            
                28.60
             |           
            
                28.60
             |               
            
                27.60
             |                           
            
                27.60
             | 
            
                28.16
             |                     
            
                9.25
             |                                 
            
                404,220
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2014
             | 
            
                -0.90 / -3.05%
             |             
            
                29.10
             |           
            
                29.50
             |               
            
                28.60
             |                           
            
                28.60
             | 
            
                28.92
             |                     
            
                9.59
             |                                 
            
                355,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2014
             | 
            
                +0.60 / +2.08%
             |             
            
                28.60
             |           
            
                30.50
             |               
            
                28.60
             |                           
            
                29.50
             | 
            
                29.71
             |                     
            
                9.89
             |                                 
            
                568,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2014
             | 
            
                +1.60 / +5.86%
             |             
            
                27.30
             |           
            
                29.10
             |               
            
                27.30
             |                           
            
                28.90
             | 
            
                28.43
             |                     
            
                9.69
             |                                 
            
                522,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/27/2014
             | 
            
                +0.40 / +1.49%
             |             
            
                26.90
             |           
            
                27.50
             |               
            
                26.60
             |                           
            
                27.30
             | 
            
                27.08
             |                     
            
                9.15
             |                                 
            
                875,270
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2014
             | 
            
                +0.30 / +1.13%
             |             
            
                26.10
             |           
            
                27.20
             |               
            
                26.10
             |                           
            
                26.90
             | 
            
                26.68
             |                     
            
                9.02
             |                                 
            
                79,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2014
             | 
            
                -0.20 / -0.75%
             |             
            
                26.80
             |           
            
                26.90
             |               
            
                26.40
             |                           
            
                26.60
             | 
            
                26.63
             |                     
            
                8.92
             |                                 
            
                205,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2014
             | 
            
                -0.60 / -2.19%
             |             
            
                27.50
             |           
            
                27.50
             |               
            
                26.80
             |                           
            
                26.80
             | 
            
                27.16
             |                     
            
                8.98
             |                                 
            
                327,620
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2014
             | 
            
                +1.30 / +4.98%
             |             
            
                26.10
             |           
            
                27.60
             |               
            
                26.00
             |                           
            
                27.40
             | 
            
                26.70
             |                     
            
                9.19
             |                                 
            
                288,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2014
             | 
            
                -0.90 / -3.33%
             |             
            
                26.50
             |           
            
                26.50
             |               
            
                25.50
             |                           
            
                26.10
             | 
            
                25.97
             |                     
            
                8.75
             |                                 
            
                384,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2014
             | 
            
                +0.50 / +1.89%
             |             
            
                26.50
             |           
            
                27.20
             |               
            
                26.30
             |                           
            
                27.00
             | 
            
                26.83
             |                     
            
                8.55
             |                                 
            
                182,610
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2014
             | 
            
                +1.00 / +3.92%
             |             
            
                25.80
             |           
            
                26.50
             |               
            
                25.70
             |                           
            
                26.50
             | 
            
                26.10
             |                     
            
                8.39
             |                                 
            
                112,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2014
             | 
            
                -0.90 / -3.41%
             |             
            
                26.50
             |           
            
                26.80
             |               
            
                23.90
             |                           
            
                25.50
             | 
            
                25.86
             |                     
            
                8.07
             |                                 
            
                240,130
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2014
             | 
            
                +1.10 / +4.35%
             |             
            
                26.00
             |           
            
                26.90
             |               
            
                25.80
             |                           
            
                26.40
             | 
            
                26.18
             |                     
            
                8.36
             |                                 
            
                206,890
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2014
             | 
            
                0.00 / 0.00%
             |             
            
                24.90
             |           
            
                26.00
             |               
            
                24.70
             |                           
            
                25.30
             | 
            
                25.43
             |                     
            
                8.01
             |                                 
            
                443,710
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2014
             | 
            
                -2.60 / -9.32%
             |             
            
                28.00
             |           
            
                28.00
             |               
            
                25.30
             |                           
            
                25.30
             | 
            
                25.94
             |                     
            
                8.01
             |                                 
            
                390,490
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2014
             | 
            
                +1.50 / +5.68%
             |             
            
                25.70
             |           
            
                28.50
             |               
            
                25.70
             |                           
            
                27.90
             | 
            
                27.90
             |                     
            
                8.83
             |                                 
            
                390,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2014
             | 
            
                -2.90 / -9.90%
             |             
            
                29.00
             |           
            
                29.00
             |               
            
                26.40
             |                           
            
                26.40
             | 
            
                26.63
             |                     
            
                8.36
             |                                 
            
                1,397,030
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2014
             | 
            
                +0.10 / +0.34%
             |             
            
                29.20
             |           
            
                29.40
             |               
            
                28.80
             |                           
            
                29.30
             | 
            
                29.20
             |                     
            
                9.28
             |                                 
            
                250,320
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2014
             | 
            
                +0.50 / +1.74%
             |             
            
                28.50
             |           
            
                29.20
             |               
            
                27.80
             |                           
            
                29.20
             | 
            
                28.21
             |                     
            
                9.25
             |                                 
            
                544,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2014
             | 
            
                -0.60 / -2.05%
             |             
            
                29.30
             |           
            
                29.30
             |               
            
                28.30
             |                           
            
                28.70
             | 
            
                28.72
             |                     
            
                9.09
             |                                 
            
                554,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/29/2014
             | 
            
                0.00 / 0.00%
             |             
            
                29.30
             |           
            
                29.40
             |               
            
                29.10
             |                           
            
                29.30
             | 
            
                29.24
             |                     
            
                9.28
             |                                 
            
                305,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/28/2014
             | 
            
                +0.10 / +0.34%
             |             
            
                29.50
             |           
            
                29.70
             |               
            
                29.10
             |                           
            
                29.30
             | 
            
                29.36
             |                     
            
                9.28
             |                                 
            
                193,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2014
             | 
            
                +0.30 / +1.04%
             |             
            
                29.00
             |           
            
                29.50
             |               
            
                28.80
             |                           
            
                29.20
             | 
            
                29.28
             |                     
            
                9.25
             |                                 
            
                253,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2014
             | 
            
                -0.10 / -0.34%
             |             
            
                28.90
             |           
            
                29.40
             |               
            
                28.80
             |                           
            
                28.90
             | 
            
                29.13
             |                     
            
                9.15
             |                                 
            
                421,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2014
             | 
            
                -0.80 / -2.68%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                29.00
             |                           
            
                29.00
             | 
            
                29.49
             |                     
            
                9.18
             |                                 
            
                334,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2014
             | 
            
                +1.80 / +6.43%
             |             
            
                28.10
             |           
            
                29.90
             |               
            
                28.00
             |                           
            
                29.80
             | 
            
                28.45
             |                     
            
                9.44
             |                                 
            
                492,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2014
             | 
            
                -2.30 / -7.59%
             |             
            
                30.00
             |           
            
                30.00
             |               
            
                28.00
             |                           
            
                28.00
             | 
            
                28.92
             |                     
            
                8.87
             |                                 
            
                716,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2014
             | 
            
                -1.10 / -3.50%
             |             
            
                31.40
             |           
            
                31.40
             |               
            
                30.30
             |                           
            
                30.30
             | 
            
                30.51
             |                     
            
                9.59
             |                                 
            
                556,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2014
             | 
            
                +0.70 / +2.28%
             |             
            
                31.00
             |           
            
                32.00
             |               
            
                31.00
             |                           
            
                31.40
             | 
            
                31.31
             |                     
            
                9.94
             |                                 
            
                688,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |