| 
                 
                    Closing price on 10/2/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    76.30 | 
                 
                
                    | High | 
                    76.50 | 
                 
                
                    | Low | 
                    75.20 | 
                     
                
                    | Volume | 
                    29,400 | 
                                 
                
                    | Split-adjusted Price | 
                    46.89 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/2/2020
             | 
            
                -0.70 / -0.92%
             |             
            
                76.30
             |           
            
                76.50
             |               
            
                75.20
             |                           
            
                75.60
             | 
            
                76.05
             |                     
            
                46.89
             |                                 
            
                29,400
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2020
             | 
            
                -0.60 / -0.78%
             |             
            
                76.90
             |           
            
                76.90
             |               
            
                75.20
             |                           
            
                76.30
             | 
            
                76.08
             |                     
            
                47.32
             |                                 
            
                39,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2020
             | 
            
                0.00 / 0.00%
             |             
            
                77.00
             |           
            
                77.00
             |               
            
                76.50
             |                           
            
                76.90
             | 
            
                76.85
             |                     
            
                47.69
             |                                 
            
                20,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/29/2020
             | 
            
                +0.70 / +0.92%
             |             
            
                76.20
             |           
            
                77.20
             |               
            
                76.20
             |                           
            
                76.90
             | 
            
                76.75
             |                     
            
                47.69
             |                                 
            
                68,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/28/2020
             | 
            
                +3.20 / +4.38%
             |             
            
                73.00
             |           
            
                77.00
             |               
            
                72.90
             |                           
            
                76.20
             | 
            
                75.25
             |                     
            
                47.26
             |                                 
            
                65,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2020
             | 
            
                -0.40 / -0.54%
             |             
            
                73.30
             |           
            
                73.30
             |               
            
                72.40
             |                           
            
                73.00
             | 
            
                72.90
             |                     
            
                45.28
             |                                 
            
                15,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2020
             | 
            
                -0.60 / -0.81%
             |             
            
                73.90
             |           
            
                73.90
             |               
            
                73.00
             |                           
            
                73.40
             | 
            
                73.53
             |                     
            
                45.52
             |                                 
            
                4,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2020
             | 
            
                -0.50 / -0.67%
             |             
            
                74.00
             |           
            
                74.50
             |               
            
                73.70
             |                           
            
                74.00
             | 
            
                74.11
             |                     
            
                45.90
             |                                 
            
                11,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/22/2020
             | 
            
                +0.10 / +0.13%
             |             
            
                74.20
             |           
            
                74.50
             |               
            
                73.50
             |                           
            
                74.50
             | 
            
                74.26
             |                     
            
                46.21
             |                                 
            
                10,300
             |            
            
                 
             |                                       
         
    
        
            | 
                9/21/2020
             | 
            
                -0.50 / -0.67%
             |             
            
                74.90
             |           
            
                74.90
             |               
            
                74.00
             |                           
            
                74.40
             | 
            
                74.35
             |                     
            
                46.14
             |                                 
            
                20,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2020
             | 
            
                +0.20 / +0.27%
             |             
            
                74.90
             |           
            
                75.10
             |               
            
                74.10
             |                           
            
                74.90
             | 
            
                74.88
             |                     
            
                46.45
             |                                 
            
                16,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2020
             | 
            
                -2.40 / -3.11%
             |             
            
                76.00
             |           
            
                77.20
             |               
            
                74.50
             |                           
            
                74.70
             | 
            
                75.40
             |                     
            
                46.33
             |                                 
            
                26,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2020
             | 
            
                -0.40 / -0.52%
             |             
            
                77.50
             |           
            
                77.60
             |               
            
                77.00
             |                           
            
                77.10
             | 
            
                77.24
             |                     
            
                47.82
             |                                 
            
                25,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2020
             | 
            
                -0.50 / -0.64%
             |             
            
                77.90
             |           
            
                77.90
             |               
            
                75.30
             |                           
            
                77.50
             | 
            
                76.90
             |                     
            
                48.07
             |                                 
            
                6,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2020
             | 
            
                +5.80 / +8.03%
             |             
            
                75.10
             |           
            
                78.60
             |               
            
                72.50
             |                           
            
                78.00
             | 
            
                76.52
             |                     
            
                48.38
             |                                 
            
                56,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2020
             | 
            
                0.00 / 0.00%
             |             
            
                72.10
             |           
            
                72.70
             |               
            
                70.80
             |                           
            
                72.20
             | 
            
                72.23
             |                     
            
                44.78
             |                                 
            
                15,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2020
             | 
            
                +1.60 / +2.27%
             |             
            
                70.60
             |           
            
                74.00
             |               
            
                70.60
             |                           
            
                72.20
             | 
            
                71.80
             |                     
            
                44.78
             |                                 
            
                25,800
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2020
             | 
            
                0.00 / 0.00%
             |             
            
                70.20
             |           
            
                70.60
             |               
            
                70.00
             |                           
            
                70.60
             | 
            
                70.26
             |                     
            
                43.79
             |                                 
            
                4,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2020
             | 
            
                +0.50 / +0.71%
             |             
            
                69.80
             |           
            
                70.60
             |               
            
                69.50
             |                           
            
                70.60
             | 
            
                70.21
             |                     
            
                43.79
             |                                 
            
                14,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2020
             | 
            
                +0.10 / +0.14%
             |             
            
                69.60
             |           
            
                70.50
             |               
            
                69.00
             |                           
            
                70.10
             | 
            
                69.56
             |                     
            
                43.48
             |                                 
            
                14,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2020
             | 
            
                -2.00 / -2.78%
             |             
            
                71.00
             |           
            
                72.90
             |               
            
                70.00
             |                           
            
                70.00
             | 
            
                70.94
             |                     
            
                43.41
             |                                 
            
                10,600
             |            
            
                 
             |                                       
         
    
        
            | 
                9/3/2020
             | 
            
                +1.10 / +1.55%
             |             
            
                70.50
             |           
            
                72.00
             |               
            
                70.50
             |                           
            
                72.00
             | 
            
                71.09
             |                     
            
                44.66
             |                                 
            
                18,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2020
             | 
            
                +2.20 / +3.20%
             |             
            
                69.00
             |           
            
                71.00
             |               
            
                69.00
             |                           
            
                70.90
             | 
            
                70.48
             |                     
            
                43.97
             |                                 
            
                6,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2020
             | 
            
                -0.60 / -0.87%
             |             
            
                68.50
             |           
            
                69.50
             |               
            
                68.30
             |                           
            
                68.70
             | 
            
                68.83
             |                     
            
                42.61
             |                                 
            
                12,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2020
             | 
            
                -2.60 / -3.62%
             |             
            
                71.00
             |           
            
                71.00
             |               
            
                69.30
             |                           
            
                69.30
             | 
            
                70.10
             |                     
            
                42.98
             |                                 
            
                8,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2020
             | 
            
                +0.80 / +1.13%
             |             
            
                69.00
             |           
            
                71.90
             |               
            
                68.20
             |                           
            
                71.90
             | 
            
                69.68
             |                     
            
                44.59
             |                                 
            
                6,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2020
             | 
            
                +0.10 / +0.14%
             |             
            
                72.00
             |           
            
                75.00
             |               
            
                71.10
             |                           
            
                71.10
             | 
            
                73.43
             |                     
            
                44.10
             |                                 
            
                13,700
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2020
             | 
            
                +3.00 / +4.41%
             |             
            
                68.00
             |           
            
                71.00
             |               
            
                67.60
             |                           
            
                71.00
             | 
            
                69.33
             |                     
            
                44.04
             |                                 
            
                23,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2020
             | 
            
                +1.60 / +2.41%
             |             
            
                66.40
             |           
            
                69.00
             |               
            
                66.40
             |                           
            
                68.00
             | 
            
                67.74
             |                     
            
                42.17
             |                                 
            
                22,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2020
             | 
            
                -0.90 / -1.34%
             |             
            
                67.30
             |           
            
                67.30
             |               
            
                66.00
             |                           
            
                66.40
             | 
            
                66.58
             |                     
            
                41.18
             |                                 
            
                10,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |