| 
                 
                    Closing price on 2/24/2021
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    15.80 | 
                 
                
                    | High | 
                    15.80 | 
                 
                
                    | Low | 
                    15.60 | 
                     
                
                    | Volume | 
                    7,800 | 
                                 
                
                    | Split-adjusted Price | 
                    15.60 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/24/2021
             | 
            
                -0.20 / -1.27%
             |             
            
                15.80
             |           
            
                15.80
             |               
            
                15.60
             |                           
            
                15.60
             | 
            
                15.64
             |                     
            
                15.60
             |                                 
            
                7,800
             |            
            
                 
             |                                       
         
    
        
            | 
                2/23/2021
             | 
            
                +0.15 / +0.96%
             |             
            
                16.20
             |           
            
                16.20
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                16.01
             |                     
            
                15.80
             |                                 
            
                13,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2021
             | 
            
                +1.00 / +6.83%
             |             
            
                14.60
             |           
            
                15.65
             |               
            
                14.50
             |                           
            
                15.65
             | 
            
                14.65
             |                     
            
                15.65
             |                                 
            
                75,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/19/2021
             | 
            
                -0.10 / -0.68%
             |             
            
                14.70
             |           
            
                14.70
             |               
            
                14.60
             |                           
            
                14.65
             | 
            
                14.63
             |                     
            
                14.65
             |                                 
            
                2,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2021
             | 
            
                0.00 / 0.00%
             |             
            
                14.75
             |           
            
                15.00
             |               
            
                14.60
             |                           
            
                14.75
             | 
            
                14.76
             |                     
            
                14.75
             |                                 
            
                9,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/17/2021
             | 
            
                -0.15 / -1.01%
             |             
            
                14.70
             |           
            
                14.85
             |               
            
                13.95
             |                           
            
                14.75
             | 
            
                14.12
             |                     
            
                14.75
             |                                 
            
                78,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/9/2021
             | 
            
                -0.20 / -1.32%
             |             
            
                14.60
             |           
            
                14.90
             |               
            
                14.30
             |                           
            
                14.90
             | 
            
                14.54
             |                     
            
                14.90
             |                                 
            
                22,200
             |            
            
                 
             |                                       
         
    
        
            | 
                2/8/2021
             | 
            
                0.00 / 0.00%
             |             
            
                15.10
             |           
            
                15.10
             |               
            
                14.25
             |                           
            
                15.10
             | 
            
                14.64
             |                     
            
                15.10
             |                                 
            
                20,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/5/2021
             | 
            
                +0.10 / +0.67%
             |             
            
                14.90
             |           
            
                15.10
             |               
            
                14.90
             |                           
            
                15.10
             | 
            
                14.97
             |                     
            
                15.10
             |                                 
            
                28,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/4/2021
             | 
            
                -0.20 / -1.32%
             |             
            
                15.20
             |           
            
                15.20
             |               
            
                14.25
             |                           
            
                15.00
             | 
            
                14.58
             |                     
            
                15.00
             |                                 
            
                21,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/3/2021
             | 
            
                +0.40 / +2.70%
             |             
            
                15.00
             |           
            
                15.20
             |               
            
                14.10
             |                           
            
                15.20
             | 
            
                14.43
             |                     
            
                15.20
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/2/2021
             | 
            
                +0.30 / +2.07%
             |             
            
                14.50
             |           
            
                15.40
             |               
            
                13.50
             |                           
            
                14.80
             | 
            
                14.50
             |                     
            
                14.80
             |                                 
            
                62,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/1/2021
             | 
            
                -0.95 / -6.15%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                14.50
             |                           
            
                14.50
             | 
            
                15.45
             |                     
            
                14.50
             |                                 
            
                10,800
             |            
            
                 
             |                                       
         
    
        
            | 
                1/29/2021
             | 
            
                +0.55 / +3.69%
             |             
            
                14.50
             |           
            
                15.50
             |               
            
                14.50
             |                           
            
                15.45
             | 
            
                15.17
             |                     
            
                15.45
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/28/2021
             | 
            
                -1.10 / -6.88%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                14.90
             |                           
            
                14.90
             | 
            
                15.08
             |                     
            
                14.90
             |                                 
            
                19,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/27/2021
             | 
            
                -0.50 / -3.03%
             |             
            
                16.50
             |           
            
                16.50
             |               
            
                15.80
             |                           
            
                16.00
             | 
            
                15.95
             |                     
            
                16.00
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/26/2021
             | 
            
                -0.35 / -2.08%
             |             
            
                16.30
             |           
            
                16.80
             |               
            
                15.80
             |                           
            
                16.50
             | 
            
                16.13
             |                     
            
                16.50
             |                                 
            
                22,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/25/2021
             | 
            
                -0.15 / -0.88%
             |             
            
                16.80
             |           
            
                17.00
             |               
            
                16.20
             |                           
            
                16.85
             | 
            
                17.00
             |                     
            
                16.85
             |                                 
            
                20,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2021
             | 
            
                +0.25 / +1.49%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.60
             |                           
            
                17.00
             | 
            
                16.75
             |                     
            
                17.00
             |                                 
            
                35,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2021
             | 
            
                +1.05 / +6.69%
             |             
            
                15.80
             |           
            
                16.75
             |               
            
                15.80
             |                           
            
                16.75
             | 
            
                16.56
             |                     
            
                16.75
             |                                 
            
                62,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2021
             | 
            
                +0.10 / +0.64%
             |             
            
                16.65
             |           
            
                16.65
             |               
            
                15.60
             |                           
            
                15.70
             | 
            
                16.03
             |                     
            
                15.70
             |                                 
            
                32,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/19/2021
             | 
            
                -0.20 / -1.27%
             |             
            
                16.00
             |           
            
                16.65
             |               
            
                15.20
             |                           
            
                15.60
             | 
            
                15.86
             |                     
            
                15.60
             |                                 
            
                55,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/18/2021
             | 
            
                0.00 / 0.00%
             |             
            
                15.90
             |           
            
                15.90
             |               
            
                15.20
             |                           
            
                15.80
             | 
            
                15.36
             |                     
            
                15.80
             |                                 
            
                33,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2021
             | 
            
                -0.40 / -2.47%
             |             
            
                16.95
             |           
            
                16.95
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                16.11
             |                     
            
                15.80
             |                                 
            
                27,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2021
             | 
            
                -0.50 / -2.99%
             |             
            
                17.20
             |           
            
                17.20
             |               
            
                16.20
             |                           
            
                16.20
             | 
            
                16.73
             |                     
            
                16.20
             |                                 
            
                6,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2021
             | 
            
                +0.80 / +5.03%
             |             
            
                15.90
             |           
            
                16.80
             |               
            
                15.90
             |                           
            
                16.70
             | 
            
                16.11
             |                     
            
                16.70
             |                                 
            
                34,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/12/2021
             | 
            
                -0.20 / -1.24%
             |             
            
                16.00
             |           
            
                16.00
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                15.90
             |                     
            
                15.90
             |                                 
            
                6,300
             |            
            
                 
             |                                       
         
    
        
            | 
                1/11/2021
             | 
            
                -0.70 / -4.17%
             |             
            
                16.80
             |           
            
                16.80
             |               
            
                16.00
             |                           
            
                16.10
             | 
            
                16.03
             |                     
            
                16.10
             |                                 
            
                24,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2021
             | 
            
                0.00 / 0.00%
             |             
            
                17.25
             |           
            
                17.25
             |               
            
                16.80
             |                           
            
                16.80
             | 
            
                16.95
             |                     
            
                16.80
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2021
             | 
            
                -0.20 / -1.18%
             |             
            
                16.30
             |           
            
                16.80
             |               
            
                15.90
             |                           
            
                16.80
             | 
            
                16.19
             |                     
            
                16.80
             |                                 
            
                7,700
             |  
            
                 
             |                                                              
             
    
         
    
    
 |