| 
                 
                    Closing price on 6/25/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    18.10 | 
                 
                
                    | High | 
                    18.10 | 
                 
                
                    | Low | 
                    17.90 | 
                     
                
                    | Volume | 
                    4,600 | 
                                 
                
                    | Split-adjusted Price | 
                    17.90 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/25/2021
             | 
            
                -0.30 / -1.65%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                17.90
             |                           
            
                17.90
             | 
            
                18.04
             |                     
            
                17.90
             |                                 
            
                4,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/24/2021
             | 
            
                0.00 / 0.00%
             |             
            
                18.60
             |           
            
                18.60
             |               
            
                18.20
             |                           
            
                18.20
             | 
            
                18.46
             |                     
            
                18.20
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/23/2021
             | 
            
                -0.50 / -2.67%
             |             
            
                18.60
             |           
            
                18.60
             |               
            
                18.20
             |                           
            
                18.20
             | 
            
                18.29
             |                     
            
                18.20
             |                                 
            
                11,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2021
             | 
            
                +0.20 / +1.08%
             |             
            
                18.50
             |           
            
                18.80
             |               
            
                18.50
             |                           
            
                18.70
             | 
            
                18.59
             |                     
            
                18.70
             |                                 
            
                20,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2021
             | 
            
                -0.35 / -1.86%
             |             
            
                19.00
             |           
            
                19.00
             |               
            
                18.00
             |                           
            
                18.50
             | 
            
                18.21
             |                     
            
                18.50
             |                                 
            
                20,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/18/2021
             | 
            
                +0.70 / +3.86%
             |             
            
                18.10
             |           
            
                18.90
             |               
            
                18.10
             |                           
            
                18.85
             | 
            
                18.48
             |                     
            
                18.85
             |                                 
            
                60,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/17/2021
             | 
            
                +0.25 / +1.40%
             |             
            
                17.90
             |           
            
                18.15
             |               
            
                17.50
             |                           
            
                18.15
             | 
            
                17.99
             |                     
            
                18.15
             |                                 
            
                38,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/16/2021
             | 
            
                -0.10 / -0.56%
             |             
            
                18.50
             |           
            
                18.50
             |               
            
                17.90
             |                           
            
                17.90
             | 
            
                18.07
             |                     
            
                17.90
             |                                 
            
                10,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2021
             | 
            
                -0.35 / -1.91%
             |             
            
                18.90
             |           
            
                18.90
             |               
            
                18.00
             |                           
            
                18.00
             | 
            
                18.30
             |                     
            
                18.00
             |                                 
            
                40,500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2021
             | 
            
                +1.15 / +6.69%
             |             
            
                17.30
             |           
            
                18.40
             |               
            
                17.30
             |                           
            
                18.35
             | 
            
                17.96
             |                     
            
                18.35
             |                                 
            
                42,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/11/2021
             | 
            
                +0.10 / +0.58%
             |             
            
                17.30
             |           
            
                17.30
             |               
            
                16.80
             |                           
            
                17.20
             | 
            
                17.14
             |                     
            
                17.20
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                6/10/2021
             | 
            
                0.00 / 0.00%
             |             
            
                17.10
             |           
            
                17.10
             |               
            
                16.70
             |                           
            
                17.10
             | 
            
                17.04
             |                     
            
                17.10
             |                                 
            
                11,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2021
             | 
            
                +0.30 / +1.79%
             |             
            
                17.10
             |           
            
                17.40
             |               
            
                16.55
             |                           
            
                17.10
             | 
            
                16.80
             |                     
            
                17.10
             |                                 
            
                21,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2021
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                17.00
             |               
            
                16.50
             |                           
            
                16.80
             | 
            
                16.69
             |                     
            
                16.80
             |                                 
            
                11,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2021
             | 
            
                -0.50 / -2.89%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.20
             |                           
            
                16.80
             | 
            
                16.91
             |                     
            
                16.80
             |                                 
            
                23,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2021
             | 
            
                -0.10 / -0.57%
             |             
            
                17.10
             |           
            
                17.30
             |               
            
                17.00
             |                           
            
                17.30
             | 
            
                17.06
             |                     
            
                17.30
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2021
             | 
            
                +0.40 / +2.35%
             |             
            
                17.45
             |           
            
                17.60
             |               
            
                17.10
             |                           
            
                17.40
             | 
            
                17.27
             |                     
            
                17.40
             |                                 
            
                17,600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2021
             | 
            
                0.00 / 0.00%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.50
             |                           
            
                17.00
             | 
            
                16.93
             |                     
            
                17.00
             |                                 
            
                22,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2021
             | 
            
                -0.50 / -2.86%
             |             
            
                17.50
             |           
            
                17.50
             |               
            
                17.00
             |                           
            
                17.00
             | 
            
                17.15
             |                     
            
                17.00
             |                                 
            
                13,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2021
             | 
            
                -0.70 / -3.85%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                17.00
             |                           
            
                17.50
             | 
            
                17.58
             |                     
            
                17.50
             |                                 
            
                28,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2021
             | 
            
                +0.40 / +2.25%
             |             
            
                17.70
             |           
            
                18.50
             |               
            
                17.60
             |                           
            
                18.20
             | 
            
                18.11
             |                     
            
                18.20
             |                                 
            
                12,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2021
             | 
            
                -1.00 / -5.32%
             |             
            
                17.80
             |           
            
                18.15
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                17.95
             |                     
            
                17.80
             |                                 
            
                57,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/26/2021
             | 
            
                +0.65 / +3.58%
             |             
            
                19.35
             |           
            
                19.35
             |               
            
                18.60
             |                           
            
                18.80
             | 
            
                19.00
             |                     
            
                18.80
             |                                 
            
                109,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/25/2021
             | 
            
                +1.15 / +6.76%
             |             
            
                18.15
             |           
            
                18.15
             |               
            
                18.15
             |                           
            
                18.15
             | 
            
                18.15
             |                     
            
                18.15
             |                                 
            
                41,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2021
             | 
            
                +1.10 / +6.92%
             |             
            
                16.10
             |           
            
                17.00
             |               
            
                16.10
             |                           
            
                17.00
             | 
            
                16.98
             |                     
            
                17.00
             |                                 
            
                72,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2021
             | 
            
                +0.30 / +1.92%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                15.90
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2021
             | 
            
                -0.10 / -0.64%
             |             
            
                15.70
             |           
            
                15.70
             |               
            
                15.60
             |                           
            
                15.60
             | 
            
                15.68
             |                     
            
                15.60
             |                                 
            
                3,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/19/2021
             | 
            
                -0.10 / -0.63%
             |             
            
                15.60
             |           
            
                16.20
             |               
            
                15.60
             |                           
            
                15.70
             | 
            
                15.60
             |                     
            
                15.70
             |                                 
            
                2,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/18/2021
             | 
            
                -0.10 / -0.63%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                15.80
             |                     
            
                15.80
             |                                 
            
                9,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2021
             | 
            
                0.00 / 0.00%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                15.90
             |                                 
            
                300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |