| 
                 
                    Closing price on 2/15/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    34.60 | 
                 
                
                    | High | 
                    35.00 | 
                 
                
                    | Low | 
                    34.60 | 
                     
                
                    | Volume | 
                    29,000 | 
                                 
                
                    | Split-adjusted Price | 
                    23.77 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PGS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/15/2019
             | 
            
                0.00 / 0.00%
             |             
            
                34.60
             |           
            
                35.00
             |               
            
                34.60
             |                           
            
                35.00
             | 
            
                34.81
             |                     
            
                23.77
             |                                 
            
                29,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/14/2019
             | 
            
                0.00 / 0.00%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                35.00
             |                           
            
                35.00
             | 
            
                35.00
             |                     
            
                23.77
             |                                 
            
                10,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/13/2019
             | 
            
                +2.00 / +6.06%
             |             
            
                33.80
             |           
            
                35.00
             |               
            
                33.80
             |                           
            
                35.00
             | 
            
                34.14
             |                     
            
                23.77
             |                                 
            
                61,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/12/2019
             | 
            
                -1.40 / -4.07%
             |             
            
                33.00
             |           
            
                33.00
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                22.41
             |                                 
            
                2,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/11/2019
             | 
            
                +1.10 / +3.30%
             |             
            
                32.00
             |           
            
                34.40
             |               
            
                32.00
             |                           
            
                34.40
             | 
            
                32.31
             |                     
            
                23.36
             |                                 
            
                76,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/1/2019
             | 
            
                +0.80 / +2.46%
             |             
            
                31.50
             |           
            
                33.30
             |               
            
                31.50
             |                           
            
                33.30
             | 
            
                31.54
             |                     
            
                22.62
             |                                 
            
                8,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2019
             | 
            
                0.00 / 0.00%
             |             
            
                33.50
             |           
            
                33.50
             |               
            
                32.50
             |                           
            
                32.50
             | 
            
                32.55
             |                     
            
                22.07
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2019
             | 
            
                0.00 / 0.00%
             |             
            
                32.40
             |           
            
                33.00
             |               
            
                32.40
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                22.07
             |                                 
            
                14,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/29/2019
             | 
            
                -1.10 / -3.27%
             |             
            
                32.50
             |           
            
                32.50
             |               
            
                32.40
             |                           
            
                32.50
             | 
            
                32.49
             |                     
            
                22.07
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/28/2019
             | 
            
                +1.10 / +3.38%
             |             
            
                33.60
             |           
            
                33.60
             |               
            
                33.60
             |                           
            
                33.60
             | 
            
                33.60
             |                     
            
                22.82
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/25/2019
             | 
            
                0.00 / 0.00%
             |             
            
                31.00
             |           
            
                32.50
             |               
            
                29.70
             |                           
            
                32.50
             | 
            
                31.26
             |                     
            
                22.07
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/24/2019
             | 
            
                -0.50 / -1.52%
             |             
            
                32.50
             |           
            
                32.50
             |               
            
                32.50
             |                           
            
                32.50
             | 
            
                32.50
             |                     
            
                22.07
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/23/2019
             | 
            
                -0.50 / -1.49%
             |             
            
                33.10
             |           
            
                33.40
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.25
             |                     
            
                22.41
             |                                 
            
                110,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/22/2019
             | 
            
                -0.10 / -0.30%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                32.50
             |                           
            
                33.50
             | 
            
                32.74
             |                     
            
                22.75
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/21/2019
             | 
            
                +0.20 / +0.60%
             |             
            
                33.90
             |           
            
                34.30
             |               
            
                33.40
             |                           
            
                33.60
             | 
            
                33.91
             |                     
            
                22.82
             |                                 
            
                300,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/18/2019
             | 
            
                +0.40 / +1.21%
             |             
            
                34.30
             |           
            
                34.80
             |               
            
                30.20
             |                           
            
                33.40
             | 
            
                34.51
             |                     
            
                22.69
             |                                 
            
                200,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/17/2019
             | 
            
                -0.10 / -0.30%
             |             
            
                33.00
             |           
            
                33.00
             |               
            
                33.00
             |                           
            
                33.00
             | 
            
                33.00
             |                     
            
                22.41
             |                                 
            
                204,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/16/2019
             | 
            
                +0.20 / +0.61%
             |             
            
                32.00
             |           
            
                33.60
             |               
            
                32.00
             |                           
            
                33.10
             | 
            
                32.94
             |                     
            
                22.48
             |                                 
            
                413,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/15/2019
             | 
            
                +2.10 / +6.82%
             |             
            
                30.60
             |           
            
                33.80
             |               
            
                30.60
             |                           
            
                32.90
             | 
            
                30.84
             |                     
            
                22.35
             |                                 
            
                137,100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/14/2019
             | 
            
                -0.10 / -0.32%
             |             
            
                30.60
             |           
            
                30.80
             |               
            
                30.60
             |                           
            
                30.80
             | 
            
                30.61
             |                     
            
                20.92
             |                                 
            
                62,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/11/2019
             | 
            
                +0.20 / +0.65%
             |             
            
                30.90
             |           
            
                30.90
             |               
            
                30.90
             |                           
            
                30.90
             | 
            
                30.90
             |                     
            
                20.99
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/10/2019
             | 
            
                -0.10 / -0.32%
             |             
            
                28.60
             |           
            
                30.70
             |               
            
                28.10
             |                           
            
                30.70
             | 
            
                28.46
             |                     
            
                20.85
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/9/2019
             | 
            
                0.00 / 0.00%
             |             
            
                30.80
             |           
            
                30.80
             |               
            
                30.80
             |                           
            
                30.80
             | 
            
                30.80
             |                     
            
                20.92
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/8/2019
             | 
            
                0.00 / 0.00%
             |             
            
                30.80
             |           
            
                30.80
             |               
            
                30.80
             |                           
            
                30.80
             | 
            
                30.80
             |                     
            
                20.92
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/7/2019
             | 
            
                +1.10 / +3.70%
             |             
            
                30.90
             |           
            
                30.90
             |               
            
                28.00
             |                           
            
                30.80
             | 
            
                30.46
             |                     
            
                20.92
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/4/2019
             | 
            
                -0.30 / -1.00%
             |             
            
                29.70
             |           
            
                29.70
             |               
            
                29.70
             |                           
            
                29.70
             | 
            
                29.70
             |                     
            
                20.17
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/3/2019
             | 
            
                -0.10 / -0.33%
             |             
            
                29.00
             |           
            
                30.00
             |               
            
                29.00
             |                           
            
                30.00
             | 
            
                29.83
             |                     
            
                20.38
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                1/2/2019
             | 
            
                -0.10 / -0.33%
             |             
            
                30.10
             |           
            
                30.10
             |               
            
                30.10
             |                           
            
                30.10
             | 
            
                30.10
             |                     
            
                20.44
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2018
             | 
            
                -0.10 / -0.33%
             |             
            
                28.70
             |           
            
                30.20
             |               
            
                28.70
             |                           
            
                30.20
             | 
            
                29.90
             |                     
            
                20.51
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2018
             | 
            
                0.00 / 0.00%
             |             
            
                30.30
             |           
            
                30.30
             |               
            
                30.30
             |                           
            
                30.30
             | 
            
                30.30
             |                     
            
                20.58
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |