| 
                 
                    Closing price on 9/6/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    20.60 | 
                 
                
                    | High | 
                    22.40 | 
                 
                
                    | Low | 
                    20.60 | 
                     
                
                    | Volume | 
                    152,200 | 
                                 
                
                    | Split-adjusted Price | 
                    17.22 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PGS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/6/2021
             | 
            
                +2.00 / +9.80%
             |             
            
                20.60
             |           
            
                22.40
             |               
            
                20.60
             |                           
            
                22.40
             | 
            
                22.23
             |                     
            
                17.22
             |                                 
            
                152,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/1/2021
             | 
            
                +0.40 / +2.00%
             |             
            
                20.00
             |           
            
                20.40
             |               
            
                20.00
             |                           
            
                20.40
             | 
            
                20.17
             |                     
            
                15.68
             |                                 
            
                28,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/31/2021
             | 
            
                +0.50 / +2.56%
             |             
            
                19.70
             |           
            
                20.10
             |               
            
                19.50
             |                           
            
                20.00
             | 
            
                19.93
             |                     
            
                15.38
             |                                 
            
                30,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/30/2021
             | 
            
                0.00 / 0.00%
             |             
            
                19.50
             |           
            
                19.80
             |               
            
                19.50
             |                           
            
                19.50
             | 
            
                19.51
             |                     
            
                14.99
             |                                 
            
                8,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/27/2021
             | 
            
                -0.20 / -1.02%
             |             
            
                19.70
             |           
            
                19.70
             |               
            
                19.50
             |                           
            
                19.50
             | 
            
                19.70
             |                     
            
                14.99
             |                                 
            
                7,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/26/2021
             | 
            
                0.00 / 0.00%
             |             
            
                20.10
             |           
            
                20.70
             |               
            
                19.70
             |                           
            
                19.70
             | 
            
                20.34
             |                     
            
                15.14
             |                                 
            
                17,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/25/2021
             | 
            
                +0.40 / +2.07%
             |             
            
                19.50
             |           
            
                19.70
             |               
            
                19.30
             |                           
            
                19.70
             | 
            
                19.50
             |                     
            
                15.14
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/24/2021
             | 
            
                +0.40 / +2.12%
             |             
            
                18.90
             |           
            
                19.70
             |               
            
                18.90
             |                           
            
                19.30
             | 
            
                19.55
             |                     
            
                14.84
             |                                 
            
                31,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/23/2021
             | 
            
                -0.40 / -2.07%
             |             
            
                19.80
             |           
            
                19.80
             |               
            
                18.70
             |                           
            
                18.90
             | 
            
                18.92
             |                     
            
                14.53
             |                                 
            
                6,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/20/2021
             | 
            
                -0.30 / -1.53%
             |             
            
                19.50
             |           
            
                19.50
             |               
            
                19.00
             |                           
            
                19.30
             | 
            
                19.44
             |                     
            
                14.84
             |                                 
            
                50,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/19/2021
             | 
            
                0.00 / 0.00%
             |             
            
                19.50
             |           
            
                19.70
             |               
            
                19.50
             |                           
            
                19.60
             | 
            
                19.51
             |                     
            
                15.07
             |                                 
            
                20,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/18/2021
             | 
            
                +0.10 / +0.51%
             |             
            
                19.50
             |           
            
                19.70
             |               
            
                19.50
             |                           
            
                19.60
             | 
            
                19.53
             |                     
            
                15.07
             |                                 
            
                23,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/17/2021
             | 
            
                -0.10 / -0.51%
             |             
            
                18.60
             |           
            
                19.70
             |               
            
                18.60
             |                           
            
                19.50
             | 
            
                19.48
             |                     
            
                14.99
             |                                 
            
                27,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/16/2021
             | 
            
                -0.10 / -0.51%
             |             
            
                19.20
             |           
            
                19.90
             |               
            
                19.00
             |                           
            
                19.60
             | 
            
                19.30
             |                     
            
                15.07
             |                                 
            
                24,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/13/2021
             | 
            
                -0.40 / -1.99%
             |             
            
                20.10
             |           
            
                20.10
             |               
            
                19.50
             |                           
            
                19.70
             | 
            
                19.74
             |                     
            
                15.14
             |                                 
            
                23,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/12/2021
             | 
            
                +0.70 / +3.61%
             |             
            
                19.00
             |           
            
                21.00
             |               
            
                19.00
             |                           
            
                20.10
             | 
            
                19.83
             |                     
            
                15.45
             |                                 
            
                46,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/11/2021
             | 
            
                +0.60 / +3.19%
             |             
            
                18.80
             |           
            
                19.40
             |               
            
                18.80
             |                           
            
                19.40
             | 
            
                19.29
             |                     
            
                14.91
             |                                 
            
                44,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/10/2021
             | 
            
                +0.30 / +1.62%
             |             
            
                18.80
             |           
            
                18.80
             |               
            
                18.20
             |                           
            
                18.80
             | 
            
                18.58
             |                     
            
                14.45
             |                                 
            
                17,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/9/2021
             | 
            
                +0.30 / +1.65%
             |             
            
                17.50
             |           
            
                18.70
             |               
            
                17.50
             |                           
            
                18.50
             | 
            
                18.44
             |                     
            
                14.22
             |                                 
            
                26,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/6/2021
             | 
            
                -0.10 / -0.55%
             |             
            
                18.30
             |           
            
                18.30
             |               
            
                18.20
             |                           
            
                18.20
             | 
            
                18.20
             |                     
            
                13.99
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/5/2021
             | 
            
                +0.30 / +1.67%
             |             
            
                18.00
             |           
            
                18.30
             |               
            
                18.00
             |                           
            
                18.30
             | 
            
                18.10
             |                     
            
                14.07
             |                                 
            
                10,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/4/2021
             | 
            
                -0.10 / -0.55%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.03
             |                     
            
                13.84
             |                                 
            
                14,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/3/2021
             | 
            
                +0.60 / +3.43%
             |             
            
                17.60
             |           
            
                18.10
             |               
            
                17.60
             |                           
            
                18.10
             | 
            
                17.99
             |                     
            
                13.91
             |                                 
            
                27,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/2/2021
             | 
            
                -0.50 / -2.78%
             |             
            
                17.90
             |           
            
                17.90
             |               
            
                17.50
             |                           
            
                17.50
             | 
            
                17.57
             |                     
            
                13.45
             |                                 
            
                7,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/30/2021
             | 
            
                +0.20 / +1.12%
             |             
            
                17.80
             |           
            
                18.00
             |               
            
                17.50
             |                           
            
                18.00
             | 
            
                17.76
             |                     
            
                13.84
             |                                 
            
                6,700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/29/2021
             | 
            
                0.00 / 0.00%
             |             
            
                17.50
             |           
            
                17.80
             |               
            
                17.50
             |                           
            
                17.80
             | 
            
                17.61
             |                     
            
                13.68
             |                                 
            
                7,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/28/2021
             | 
            
                -0.20 / -1.11%
             |             
            
                17.70
             |           
            
                18.10
             |               
            
                17.70
             |                           
            
                17.80
             | 
            
                17.86
             |                     
            
                13.68
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/27/2021
             | 
            
                +0.20 / +1.12%
             |             
            
                17.50
             |           
            
                18.00
             |               
            
                17.40
             |                           
            
                18.00
             | 
            
                17.45
             |                     
            
                13.84
             |                                 
            
                5,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/26/2021
             | 
            
                0.00 / 0.00%
             |             
            
                17.30
             |           
            
                17.80
             |               
            
                17.20
             |                           
            
                17.80
             | 
            
                17.71
             |                     
            
                13.68
             |                                 
            
                14,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/23/2021
             | 
            
                0.00 / 0.00%
             |             
            
                17.30
             |           
            
                17.80
             |               
            
                17.20
             |                           
            
                17.80
             | 
            
                17.50
             |                     
            
                13.68
             |                                 
            
                9,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |