| 
                 
                    Closing price on 5/17/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    33.50 | 
                 
                
                    | High | 
                    35.00 | 
                 
                
                    | Low | 
                    33.50 | 
                     
                
                    | Volume | 
                    600 | 
                                 
                
                    | Split-adjusted Price | 
                    23.70 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PGS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/17/2019
             | 
            
                -0.60 / -1.69%
             |             
            
                33.50
             |           
            
                35.00
             |               
            
                33.50
             |                           
            
                34.90
             | 
            
                34.68
             |                     
            
                23.70
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2019
             | 
            
                +0.30 / +0.85%
             |             
            
                34.00
             |           
            
                35.50
             |               
            
                33.50
             |                           
            
                35.50
             | 
            
                33.76
             |                     
            
                24.11
             |                                 
            
                7,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2019
             | 
            
                +0.10 / +0.28%
             |             
            
                35.20
             |           
            
                35.20
             |               
            
                35.20
             |                           
            
                35.20
             | 
            
                35.20
             |                     
            
                23.91
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2019
             | 
            
                -0.20 / -0.57%
             |             
            
                35.10
             |           
            
                35.10
             |               
            
                35.10
             |                           
            
                35.10
             | 
            
                35.10
             |                     
            
                23.84
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2019
             | 
            
                -0.40 / -1.12%
             |             
            
                35.00
             |           
            
                35.30
             |               
            
                33.70
             |                           
            
                35.30
             | 
            
                35.21
             |                     
            
                23.98
             |                                 
            
                60,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2019
             | 
            
                +1.30 / +3.78%
             |             
            
                34.40
             |           
            
                35.90
             |               
            
                34.40
             |                           
            
                35.70
             | 
            
                34.72
             |                     
            
                24.25
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/9/2019
             | 
            
                +0.20 / +0.58%
             |             
            
                34.40
             |           
            
                34.40
             |               
            
                34.40
             |                           
            
                34.40
             | 
            
                34.40
             |                     
            
                23.36
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2019
             | 
            
                +0.40 / +1.18%
             |             
            
                33.70
             |           
            
                34.40
             |               
            
                33.70
             |                           
            
                34.20
             | 
            
                33.97
             |                     
            
                23.23
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2019
             | 
            
                -0.20 / -0.59%
             |             
            
                33.80
             |           
            
                33.80
             |               
            
                33.80
             |                           
            
                33.80
             | 
            
                33.80
             |                     
            
                22.96
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2019
             | 
            
                0.00 / 0.00%
             |             
            
                32.80
             |           
            
                34.00
             |               
            
                32.30
             |                           
            
                34.00
             | 
            
                32.88
             |                     
            
                23.09
             |                                 
            
                3,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2019
             | 
            
                -0.40 / -1.16%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                34.00
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                23.09
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2019
             | 
            
                -1.60 / -4.44%
             |             
            
                33.50
             |           
            
                34.80
             |               
            
                32.90
             |                           
            
                34.40
             | 
            
                33.51
             |                     
            
                23.36
             |                                 
            
                3,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/26/2019
             | 
            
                +2.00 / +5.88%
             |             
            
                36.00
             |           
            
                36.00
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.00
             |                     
            
                24.45
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/25/2019
             | 
            
                +0.30 / +0.89%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                34.00
             |                           
            
                34.00
             | 
            
                34.00
             |                     
            
                23.09
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2019
             | 
            
                -0.70 / -2.03%
             |             
            
                33.70
             |           
            
                33.70
             |               
            
                33.70
             |                           
            
                33.70
             | 
            
                33.70
             |                     
            
                22.89
             |                                 
            
                2,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2019
             | 
            
                0.00 / 0.00%
             |             
            
                34.40
             |           
            
                34.40
             |               
            
                34.40
             |                           
            
                34.40
             | 
            
                34.40
             |                     
            
                23.36
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2019
             | 
            
                +0.50 / +1.47%
             |             
            
                33.90
             |           
            
                34.80
             |               
            
                33.90
             |                           
            
                34.40
             | 
            
                34.68
             |                     
            
                23.36
             |                                 
            
                134,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2019
             | 
            
                -0.80 / -2.31%
             |             
            
                34.00
             |           
            
                34.00
             |               
            
                33.90
             |                           
            
                33.90
             | 
            
                33.95
             |                     
            
                23.03
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2019
             | 
            
                0.00 / 0.00%
             |             
            
                34.70
             |           
            
                34.70
             |               
            
                34.70
             |                           
            
                34.70
             | 
            
                34.70
             |                     
            
                23.57
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2019
             | 
            
                +0.60 / +1.76%
             |             
            
                35.00
             |           
            
                35.00
             |               
            
                34.20
             |                           
            
                34.70
             | 
            
                34.88
             |                     
            
                23.57
             |                                 
            
                22,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2019
             | 
            
                -1.60 / -4.48%
             |             
            
                33.80
             |           
            
                35.20
             |               
            
                33.80
             |                           
            
                34.10
             | 
            
                33.94
             |                     
            
                23.16
             |                                 
            
                1,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2019
             | 
            
                +0.20 / +0.56%
             |             
            
                33.50
             |           
            
                36.00
             |               
            
                33.50
             |                           
            
                35.70
             | 
            
                35.39
             |                     
            
                24.25
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2019
             | 
            
                0.00 / 0.00%
             |             
            
                35.50
             |           
            
                35.50
             |               
            
                35.50
             |                           
            
                35.50
             | 
            
                35.50
             |                     
            
                24.11
             |                                 
            
                200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2019
             | 
            
                +0.50 / +1.43%
             |             
            
                35.90
             |           
            
                35.90
             |               
            
                33.70
             |                           
            
                35.50
             | 
            
                35.46
             |                     
            
                24.11
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |