| 
                 
                    Closing price on 12/23/2014
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    29.70 | 
                 
                
                    | High | 
                    29.70 | 
                 
                
                    | Low | 
                    27.80 | 
                     
                
                    | Volume | 
                    305,080 | 
                                 
                
                    | Split-adjusted Price | 
                    9.35 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PGS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/23/2014
             | 
            
                -0.60 / -2.11%
             |             
            
                29.70
             |           
            
                29.70
             |               
            
                27.80
             |                           
            
                27.90
             | 
            
                28.28
             |                     
            
                9.35
             |                                 
            
                305,080
             |            
            
                 
             |                                       
         
    
        
            | 
                12/22/2014
             | 
            
                +1.00 / +3.64%
             |             
            
                30.20
             |           
            
                30.20
             |               
            
                27.70
             |                           
            
                28.50
             | 
            
                28.46
             |                     
            
                9.55
             |                                 
            
                308,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2014
             | 
            
                -0.20 / -0.72%
             |             
            
                27.50
             |           
            
                28.70
             |               
            
                27.10
             |                           
            
                27.50
             | 
            
                27.63
             |                     
            
                9.22
             |                                 
            
                205,160
             |            
            
                 
             |                                       
         
    
        
            | 
                12/18/2014
             | 
            
                +2.00 / +7.78%
             |             
            
                23.20
             |           
            
                28.20
             |               
            
                23.20
             |                           
            
                27.70
             | 
            
                26.99
             |                     
            
                9.29
             |                                 
            
                631,670
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/17/2014
             | 
            
                -1.70 / -6.20%
             |             
            
                27.40
             |           
            
                28.00
             |               
            
                24.70
             |                           
            
                25.70
             | 
            
                26.54
             |                     
            
                8.62
             |                                 
            
                826,720
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2014
             | 
            
                -2.10 / -7.12%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                26.70
             |                           
            
                27.40
             | 
            
                27.96
             |                     
            
                9.19
             |                                 
            
                563,540
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/15/2014
             | 
            
                -0.20 / -0.67%
             |             
            
                29.70
             |           
            
                30.00
             |               
            
                29.50
             |                           
            
                29.50
             | 
            
                29.71
             |                     
            
                9.89
             |                                 
            
                162,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2014
             | 
            
                +0.20 / +0.68%
             |             
            
                30.10
             |           
            
                30.10
             |               
            
                29.00
             |                           
            
                29.70
             | 
            
                29.69
             |                     
            
                9.96
             |                                 
            
                303,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/11/2014
             | 
            
                -1.90 / -6.05%
             |             
            
                30.60
             |           
            
                31.00
             |               
            
                29.50
             |                           
            
                29.50
             | 
            
                30.47
             |                     
            
                9.89
             |                                 
            
                272,330
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2014
             | 
            
                +0.80 / +2.61%
             |             
            
                30.60
             |           
            
                31.40
             |               
            
                29.00
             |                           
            
                31.40
             | 
            
                30.46
             |                     
            
                10.53
             |                                 
            
                485,436
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2014
             | 
            
                -3.30 / -9.73%
             |             
            
                33.00
             |           
            
                33.00
             |               
            
                30.60
             |                           
            
                30.60
             | 
            
                31.34
             |                     
            
                10.26
             |                                 
            
                866,800
             |            
            
                 
             |                                       
         
    
        
            | 
                12/8/2014
             | 
            
                -1.80 / -5.04%
             |             
            
                35.70
             |           
            
                35.80
             |               
            
                33.60
             |                           
            
                33.90
             | 
            
                34.53
             |                     
            
                11.36
             |                                 
            
                430,320
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2014
             | 
            
                +2.40 / +7.21%
             |             
            
                33.00
             |           
            
                35.70
             |               
            
                32.90
             |                           
            
                35.70
             | 
            
                33.26
             |                     
            
                11.97
             |                                 
            
                447,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2014
             | 
            
                -0.20 / -0.60%
             |             
            
                33.00
             |           
            
                33.90
             |               
            
                33.00
             |                           
            
                33.30
             | 
            
                33.60
             |                     
            
                11.16
             |                                 
            
                196,810
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2014
             | 
            
                0.00 / 0.00%
             |             
            
                33.80
             |           
            
                33.80
             |               
            
                33.40
             |                           
            
                33.50
             | 
            
                33.47
             |                     
            
                11.23
             |                                 
            
                153,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2014
             | 
            
                +0.40 / +1.21%
             |             
            
                33.00
             |           
            
                33.80
             |               
            
                33.00
             |                           
            
                33.50
             | 
            
                33.36
             |                     
            
                11.23
             |                                 
            
                132,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/1/2014
             | 
            
                0.00 / 0.00%
             |             
            
                32.50
             |           
            
                34.00
             |               
            
                32.00
             |                           
            
                33.10
             | 
            
                33.49
             |                     
            
                11.10
             |                                 
            
                322,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2014
             | 
            
                -0.90 / -2.65%
             |             
            
                34.20
             |           
            
                34.20
             |               
            
                32.30
             |                           
            
                33.10
             | 
            
                33.08
             |                     
            
                11.10
             |                                 
            
                411,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/27/2014
             | 
            
                -0.50 / -1.45%
             |             
            
                34.50
             |           
            
                34.50
             |               
            
                33.10
             |                           
            
                34.00
             | 
            
                33.70
             |                     
            
                11.40
             |                                 
            
                513,300
             |            
            
                 
             |                                       
         
    
        
            | 
                11/26/2014
             | 
            
                -0.70 / -1.99%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                34.20
             |                           
            
                34.50
             | 
            
                34.71
             |                     
            
                11.57
             |                                 
            
                388,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2014
             | 
            
                +0.50 / +1.44%
             |             
            
                34.70
             |           
            
                35.30
             |               
            
                34.70
             |                           
            
                35.20
             | 
            
                34.91
             |                     
            
                11.80
             |                                 
            
                139,600
             |            
            
                 
             |                                       
         
    
        
            | 
                11/24/2014
             | 
            
                -0.70 / -1.98%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                34.50
             |                           
            
                34.70
             | 
            
                34.71
             |                     
            
                11.63
             |                                 
            
                648,750
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2014
             | 
            
                -0.60 / -1.67%
             |             
            
                36.10
             |           
            
                36.20
             |               
            
                35.30
             |                           
            
                35.40
             | 
            
                35.63
             |                     
            
                11.87
             |                                 
            
                229,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2014
             | 
            
                +0.50 / +1.41%
             |             
            
                35.80
             |           
            
                36.00
             |               
            
                35.40
             |                           
            
                36.00
             | 
            
                35.64
             |                     
            
                12.07
             |                                 
            
                317,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/19/2014
             | 
            
                -0.40 / -1.11%
             |             
            
                35.90
             |           
            
                35.90
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.68
             |                     
            
                11.90
             |                                 
            
                437,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/18/2014
             | 
            
                -0.60 / -1.64%
             |             
            
                36.50
             |           
            
                36.70
             |               
            
                35.90
             |                           
            
                35.90
             | 
            
                36.27
             |                     
            
                12.04
             |                                 
            
                351,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/17/2014
             | 
            
                -0.20 / -0.54%
             |             
            
                36.70
             |           
            
                36.90
             |               
            
                36.50
             |                           
            
                36.50
             | 
            
                36.67
             |                     
            
                12.24
             |                                 
            
                401,501
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2014
             | 
            
                -0.80 / -2.13%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                36.50
             |                           
            
                36.70
             | 
            
                36.95
             |                     
            
                12.30
             |                                 
            
                464,120
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/13/2014
             | 
            
                -0.40 / -1.06%
             |             
            
                37.90
             |           
            
                38.20
             |               
            
                37.40
             |                           
            
                37.50
             | 
            
                37.78
             |                     
            
                12.57
             |                                 
            
                455,850
             |            
            
                 
             |                                       
         
    
        
            | 
                11/12/2014
             | 
            
                +0.40 / +1.07%
             |             
            
                37.80
             |           
            
                37.90
             |               
            
                37.30
             |                           
            
                37.90
             | 
            
                37.57
             |                     
            
                12.71
             |                                 
            
                499,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |