| 
                 
                    Closing price on 4/9/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    34.00 | 
                 
                
                    | High | 
                    35.00 | 
                 
                
                    | Low | 
                    34.00 | 
                     
                
                    | Volume | 
                    900 | 
                                 
                
                    | Split-adjusted Price | 
                    23.77 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PGS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/9/2019
             | 
            
                -0.20 / -0.57%
             |             
            
                34.00
             |           
            
                35.00
             |               
            
                34.00
             |                           
            
                35.00
             | 
            
                34.53
             |                     
            
                23.77
             |                                 
            
                900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2019
             | 
            
                +0.60 / +1.73%
             |             
            
                35.00
             |           
            
                35.30
             |               
            
                34.60
             |                           
            
                35.20
             | 
            
                34.88
             |                     
            
                23.91
             |                                 
            
                4,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2019
             | 
            
                -0.20 / -0.57%
             |             
            
                34.60
             |           
            
                34.60
             |               
            
                34.60
             |                           
            
                34.60
             | 
            
                34.60
             |                     
            
                23.50
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2019
             | 
            
                -0.10 / -0.29%
             |             
            
                34.80
             |           
            
                34.80
             |               
            
                34.60
             |                           
            
                34.80
             | 
            
                34.76
             |                     
            
                23.64
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/3/2019
             | 
            
                -0.40 / -1.13%
             |             
            
                34.90
             |           
            
                34.90
             |               
            
                34.90
             |                           
            
                34.90
             | 
            
                34.90
             |                     
            
                23.70
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/2/2019
             | 
            
                0.00 / 0.00%
             |             
            
                35.30
             |           
            
                35.30
             |               
            
                34.20
             |                           
            
                35.30
             | 
            
                34.98
             |                     
            
                23.98
             |                                 
            
                5,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2019
             | 
            
                +0.50 / +1.44%
             |             
            
                35.60
             |           
            
                35.60
             |               
            
                33.60
             |                           
            
                35.30
             | 
            
                34.01
             |                     
            
                23.98
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2019
             | 
            
                -0.90 / -2.52%
             |             
            
                33.60
             |           
            
                35.00
             |               
            
                33.60
             |                           
            
                34.80
             | 
            
                34.55
             |                     
            
                23.64
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2019
             | 
            
                0.00 / 0.00%
             |             
            
                35.70
             |           
            
                35.70
             |               
            
                35.70
             |                           
            
                35.70
             | 
            
                35.70
             |                     
            
                24.25
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/27/2019
             | 
            
                -0.30 / -0.83%
             |             
            
                35.70
             |           
            
                35.70
             |               
            
                35.70
             |                           
            
                35.70
             | 
            
                35.70
             |                     
            
                24.25
             |                                 
            
                100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/26/2019
             | 
            
                +1.60 / +4.65%
             |             
            
                34.30
             |           
            
                36.00
             |               
            
                34.30
             |                           
            
                36.00
             | 
            
                34.61
             |                     
            
                24.45
             |                                 
            
                4,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2019
             | 
            
                -0.20 / -0.58%
             |             
            
                33.20
             |           
            
                34.40
             |               
            
                33.20
             |                           
            
                34.40
             | 
            
                33.25
             |                     
            
                23.36
             |                                 
            
                2,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2019
             | 
            
                -0.20 / -0.57%
             |             
            
                34.60
             |           
            
                34.60
             |               
            
                34.60
             |                           
            
                34.60
             | 
            
                34.60
             |                     
            
                23.50
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2019
             | 
            
                -0.70 / -1.97%
             |             
            
                34.80
             |           
            
                34.80
             |               
            
                34.80
             |                           
            
                34.80
             | 
            
                34.80
             |                     
            
                23.64
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/20/2019
             | 
            
                0.00 / 0.00%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                24.11
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2019
             | 
            
                0.00 / 0.00%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                24.11
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2019
             | 
            
                +1.00 / +2.90%
             |             
            
                34.50
             |           
            
                35.50
             |               
            
                33.30
             |                           
            
                35.50
             | 
            
                35.16
             |                     
            
                24.11
             |                                 
            
                196,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2019
             | 
            
                -1.00 / -2.82%
             |             
            
                34.50
             |           
            
                34.50
             |               
            
                34.50
             |                           
            
                34.50
             | 
            
                34.50
             |                     
            
                23.43
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2019
             | 
            
                +1.00 / +2.90%
             |             
            
                35.80
             |           
            
                35.80
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.54
             |                     
            
                24.11
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/13/2019
             | 
            
                0.00 / 0.00%
             |             
            
                33.40
             |           
            
                35.30
             |               
            
                33.40
             |                           
            
                34.50
             | 
            
                34.46
             |                     
            
                23.43
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/12/2019
             | 
            
                -1.00 / -2.82%
             |             
            
                35.40
             |           
            
                35.90
             |               
            
                33.30
             |                           
            
                34.50
             | 
            
                33.92
             |                     
            
                23.43
             |                                 
            
                3,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2019
             | 
            
                +0.50 / +1.43%
             |             
            
                35.80
             |           
            
                35.80
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.53
             |                     
            
                24.11
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2019
             | 
            
                +1.10 / +3.24%
             |             
            
                34.90
             |           
            
                35.70
             |               
            
                34.90
             |                           
            
                35.00
             | 
            
                35.08
             |                     
            
                23.77
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2019
             | 
            
                +0.50 / +1.50%
             |             
            
                35.60
             |           
            
                36.00
             |               
            
                33.00
             |                           
            
                33.90
             | 
            
                33.92
             |                     
            
                23.03
             |                                 
            
                9,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/6/2019
             | 
            
                -1.60 / -4.57%
             |             
            
                36.80
             |           
            
                36.80
             |               
            
                33.30
             |                           
            
                33.40
             | 
            
                35.34
             |                     
            
                22.69
             |                                 
            
                32,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2019
             | 
            
                -1.70 / -4.63%
             |             
            
                36.50
             |           
            
                40.00
             |               
            
                34.00
             |                           
            
                35.00
             | 
            
                34.24
             |                     
            
                23.77
             |                                 
            
                30,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2019
             | 
            
                +0.70 / +1.94%
             |             
            
                35.90
             |           
            
                37.00
             |               
            
                34.00
             |                           
            
                36.70
             | 
            
                34.03
             |                     
            
                24.93
             |                                 
            
                81,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2019
             | 
            
                -1.00 / -2.70%
             |             
            
                33.60
             |           
            
                36.00
             |               
            
                33.60
             |                           
            
                36.00
             | 
            
                33.90
             |                     
            
                24.45
             |                                 
            
                27,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2019
             | 
            
                +2.00 / +5.71%
             |             
            
                37.00
             |           
            
                37.00
             |               
            
                37.00
             |                           
            
                37.00
             | 
            
                37.00
             |                     
            
                25.13
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2019
             | 
            
                -0.50 / -1.41%
             |             
            
                35.40
             |           
            
                36.40
             |               
            
                34.00
             |                           
            
                35.00
             | 
            
                34.38
             |                     
            
                23.77
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |