| 
                 
                    Closing price on 9/17/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    27.95 | 
                 
                
                    | High | 
                    27.95 | 
                 
                
                    | Low | 
                    26.80 | 
                     
                
                    | Volume | 
                    79,700 | 
                                 
                
                    | Split-adjusted Price | 
                    26.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/17/2021
             | 
            
                -0.10 / -0.37%
             |             
            
                27.95
             |           
            
                27.95
             |               
            
                26.80
             |                           
            
                26.80
             | 
            
                27.05
             |                     
            
                26.80
             |                                 
            
                79,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/16/2021
             | 
            
                -0.55 / -2.00%
             |             
            
                27.40
             |           
            
                27.45
             |               
            
                26.70
             |                           
            
                26.90
             | 
            
                27.04
             |                     
            
                26.90
             |                                 
            
                101,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/15/2021
             | 
            
                +0.25 / +0.92%
             |             
            
                27.20
             |           
            
                27.50
             |               
            
                26.60
             |                           
            
                27.45
             | 
            
                27.17
             |                     
            
                27.45
             |                                 
            
                32,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/14/2021
             | 
            
                +1.20 / +4.62%
             |             
            
                26.60
             |           
            
                27.50
             |               
            
                26.60
             |                           
            
                27.20
             | 
            
                27.10
             |                     
            
                27.20
             |                                 
            
                83,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/13/2021
             | 
            
                -1.40 / -5.11%
             |             
            
                26.65
             |           
            
                27.40
             |               
            
                25.60
             |                           
            
                26.00
             | 
            
                26.62
             |                     
            
                26.00
             |                                 
            
                118,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/10/2021
             | 
            
                -0.50 / -1.79%
             |             
            
                27.70
             |           
            
                28.00
             |               
            
                27.20
             |                           
            
                27.40
             | 
            
                27.49
             |                     
            
                27.40
             |                                 
            
                116,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/9/2021
             | 
            
                -0.10 / -0.36%
             |             
            
                28.00
             |           
            
                28.00
             |               
            
                27.10
             |                           
            
                27.90
             | 
            
                27.80
             |                     
            
                27.90
             |                                 
            
                45,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/8/2021
             | 
            
                -0.20 / -0.71%
             |             
            
                27.50
             |           
            
                29.20
             |               
            
                26.95
             |                           
            
                28.00
             | 
            
                27.77
             |                     
            
                28.00
             |                                 
            
                105,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/7/2021
             | 
            
                -1.40 / -4.73%
             |             
            
                29.60
             |           
            
                30.00
             |               
            
                27.70
             |                           
            
                28.20
             | 
            
                28.75
             |                     
            
                28.20
             |                                 
            
                96,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/6/2021
             | 
            
                +1.80 / +6.47%
             |             
            
                29.35
             |           
            
                29.70
             |               
            
                28.40
             |                           
            
                29.60
             | 
            
                29.20
             |                     
            
                29.60
             |                                 
            
                173,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2021
             | 
            
                +1.50 / +5.70%
             |             
            
                26.30
             |           
            
                28.00
             |               
            
                25.80
             |                           
            
                27.80
             | 
            
                27.29
             |                     
            
                27.80
             |                                 
            
                172,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2021
             | 
            
                0.00 / 0.00%
             |             
            
                26.30
             |           
            
                26.30
             |               
            
                25.45
             |                           
            
                26.30
             | 
            
                26.08
             |                     
            
                26.30
             |                                 
            
                78,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2021
             | 
            
                +0.70 / +2.73%
             |             
            
                25.60
             |           
            
                27.00
             |               
            
                25.50
             |                           
            
                26.30
             | 
            
                26.21
             |                     
            
                26.30
             |                                 
            
                63,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2021
             | 
            
                -0.60 / -2.29%
             |             
            
                26.30
             |           
            
                26.30
             |               
            
                25.55
             |                           
            
                25.60
             | 
            
                25.82
             |                     
            
                25.60
             |                                 
            
                39,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2021
             | 
            
                +1.35 / +5.43%
             |             
            
                24.80
             |           
            
                26.55
             |               
            
                24.80
             |                           
            
                26.20
             | 
            
                26.09
             |                     
            
                26.20
             |                                 
            
                200,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2021
             | 
            
                -0.05 / -0.20%
             |             
            
                24.50
             |           
            
                24.85
             |               
            
                24.10
             |                           
            
                24.85
             | 
            
                24.32
             |                     
            
                24.85
             |                                 
            
                33,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2021
             | 
            
                -0.10 / -0.40%
             |             
            
                24.50
             |           
            
                25.45
             |               
            
                24.00
             |                           
            
                24.90
             | 
            
                24.56
             |                     
            
                24.90
             |                                 
            
                43,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2021
             | 
            
                -0.55 / -2.15%
             |             
            
                25.55
             |           
            
                25.55
             |               
            
                24.05
             |                           
            
                25.00
             | 
            
                24.80
             |                     
            
                25.00
             |                                 
            
                58,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/20/2021
             | 
            
                -0.20 / -0.78%
             |             
            
                25.20
             |           
            
                26.40
             |               
            
                24.20
             |                           
            
                25.55
             | 
            
                25.35
             |                     
            
                25.55
             |                                 
            
                135,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2021
             | 
            
                -0.95 / -3.56%
             |             
            
                26.55
             |           
            
                26.65
             |               
            
                25.50
             |                           
            
                25.75
             | 
            
                25.80
             |                     
            
                25.75
             |                                 
            
                61,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/18/2021
             | 
            
                0.00 / 0.00%
             |             
            
                26.70
             |           
            
                27.50
             |               
            
                26.00
             |                           
            
                26.70
             | 
            
                26.55
             |                     
            
                26.70
             |                                 
            
                51,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2021
             | 
            
                -1.10 / -3.96%
             |             
            
                27.00
             |           
            
                27.60
             |               
            
                26.50
             |                           
            
                26.70
             | 
            
                27.02
             |                     
            
                26.70
             |                                 
            
                143,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2021
             | 
            
                +0.20 / +0.72%
             |             
            
                29.50
             |           
            
                29.50
             |               
            
                27.80
             |                           
            
                27.80
             | 
            
                28.98
             |                     
            
                27.80
             |                                 
            
                139,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2021
             | 
            
                +1.80 / +6.98%
             |             
            
                24.30
             |           
            
                27.60
             |               
            
                24.30
             |                           
            
                27.60
             | 
            
                25.06
             |                     
            
                27.60
             |                                 
            
                148,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2021
             | 
            
                -1.50 / -5.49%
             |             
            
                29.20
             |           
            
                29.20
             |               
            
                25.50
             |                           
            
                25.80
             | 
            
                27.50
             |                     
            
                25.80
             |                                 
            
                466,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2021
             | 
            
                +1.75 / +6.85%
             |             
            
                27.30
             |           
            
                27.30
             |               
            
                27.30
             |                           
            
                27.30
             | 
            
                27.30
             |                     
            
                27.30
             |                                 
            
                82,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2021
             | 
            
                +1.65 / +6.90%
             |             
            
                25.55
             |           
            
                25.55
             |               
            
                25.55
             |                           
            
                25.55
             | 
            
                25.55
             |                     
            
                25.55
             |                                 
            
                83,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2021
             | 
            
                +1.55 / +6.94%
             |             
            
                22.65
             |           
            
                23.90
             |               
            
                22.65
             |                           
            
                23.90
             | 
            
                23.64
             |                     
            
                23.90
             |                                 
            
                192,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2021
             | 
            
                +1.45 / +6.94%
             |             
            
                20.30
             |           
            
                22.35
             |               
            
                20.30
             |                           
            
                22.35
             | 
            
                22.13
             |                     
            
                22.35
             |                                 
            
                201,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2021
             | 
            
                -0.70 / -3.24%
             |             
            
                20.15
             |           
            
                22.00
             |               
            
                20.15
             |                           
            
                20.90
             | 
            
                21.28
             |                     
            
                20.90
             |                                 
            
                96,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |