| 
                 
                    Closing price on 2/12/2020
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    45.00 | 
                 
                
                    | High | 
                    48.20 | 
                 
                
                    | Low | 
                    45.00 | 
                     
                
                    | Volume | 
                    20,100 | 
                                 
                
                    | Split-adjusted Price | 
                    29.89 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                2/12/2020
             | 
            
                +4.30 / +9.79%
             |             
            
                45.00
             |           
            
                48.20
             |               
            
                45.00
             |                           
            
                48.20
             | 
            
                47.29
             |                     
            
                29.89
             |                                 
            
                20,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2020
             | 
            
                +0.10 / +0.23%
             |             
            
                44.00
             |           
            
                44.00
             |               
            
                43.90
             |                           
            
                43.90
             | 
            
                43.96
             |                     
            
                27.23
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/10/2020
             | 
            
                +2.20 / +5.29%
             |             
            
                42.00
             |           
            
                45.50
             |               
            
                42.00
             |                           
            
                43.80
             | 
            
                42.82
             |                     
            
                27.17
             |                                 
            
                7,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/7/2020
             | 
            
                +0.10 / +0.24%
             |             
            
                41.60
             |           
            
                41.60
             |               
            
                41.00
             |                           
            
                41.60
             | 
            
                41.40
             |                     
            
                25.80
             |                                 
            
                7,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/6/2020
             | 
            
                +0.50 / +1.22%
             |             
            
                41.10
             |           
            
                41.50
             |               
            
                41.00
             |                           
            
                41.50
             | 
            
                41.20
             |                     
            
                25.74
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                2/5/2020
             | 
            
                0.00 / 0.00%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                41.00
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                25.43
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/4/2020
             | 
            
                0.00 / 0.00%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                41.00
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                25.43
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                2/3/2020
             | 
            
                0.00 / 0.00%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                39.80
             |                           
            
                41.00
             | 
            
                40.68
             |                     
            
                25.43
             |                                 
            
                5,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/31/2020
             | 
            
                -0.90 / -2.15%
             |             
            
                41.60
             |           
            
                41.60
             |               
            
                41.00
             |                           
            
                41.00
             | 
            
                41.27
             |                     
            
                25.43
             |                                 
            
                4,700
             |            
            
                 
             |                                       
         
    
        
            | 
                1/30/2020
             | 
            
                -0.10 / -0.24%
             |             
            
                42.00
             |           
            
                42.00
             |               
            
                41.10
             |                           
            
                41.90
             | 
            
                41.69
             |                     
            
                25.99
             |                                 
            
                1,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/22/2020
             | 
            
                -0.50 / -1.18%
             |             
            
                42.50
             |           
            
                42.50
             |               
            
                42.00
             |                           
            
                42.00
             | 
            
                42.17
             |                     
            
                26.05
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/21/2020
             | 
            
                0.00 / 0.00%
             |             
            
                43.00
             |           
            
                43.00
             |               
            
                42.50
             |                           
            
                42.50
             | 
            
                42.59
             |                     
            
                26.36
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/20/2020
             | 
            
                0.00 / 0.00%
             |             
            
                42.50
             |           
            
                42.50
             |               
            
                42.50
             |                           
            
                42.50
             | 
            
                42.50
             |                     
            
                26.36
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/17/2020
             | 
            
                +1.00 / +2.41%
             |             
            
                41.50
             |           
            
                42.50
             |               
            
                41.50
             |                           
            
                42.50
             | 
            
                41.86
             |                     
            
                26.36
             |                                 
            
                4,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/16/2020
             | 
            
                -0.50 / -1.19%
             |             
            
                42.00
             |           
            
                42.10
             |               
            
                41.50
             |                           
            
                41.50
             | 
            
                41.86
             |                     
            
                25.74
             |                                 
            
                4,900
             |            
            
                 
             |                                       
         
    
        
            | 
                1/15/2020
             | 
            
                0.00 / 0.00%
             |             
            
                42.10
             |           
            
                42.10
             |               
            
                42.00
             |                           
            
                42.00
             | 
            
                42.03
             |                     
            
                26.05
             |                                 
            
                2,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/14/2020
             | 
            
                -0.50 / -1.18%
             |             
            
                42.50
             |           
            
                42.50
             |               
            
                42.00
             |                           
            
                42.00
             | 
            
                42.35
             |                     
            
                26.05
             |                                 
            
                3,200
             |            
            
                 
             |                                       
         
    
        
            | 
                1/13/2020
             | 
            
                0.00 / 0.00%
             |             
            
                42.50
             |           
            
                42.90
             |               
            
                42.00
             |                           
            
                42.50
             | 
            
                42.46
             |                     
            
                26.36
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/10/2020
             | 
            
                +0.70 / +1.67%
             |             
            
                42.50
             |           
            
                42.50
             |               
            
                42.50
             |                           
            
                42.50
             | 
            
                42.50
             |                     
            
                26.36
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                1/9/2020
             | 
            
                -0.90 / -2.11%
             |             
            
                42.00
             |           
            
                42.70
             |               
            
                41.80
             |                           
            
                41.80
             | 
            
                41.92
             |                     
            
                25.92
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/8/2020
             | 
            
                0.00 / 0.00%
             |             
            
                42.70
             |           
            
                43.00
             |               
            
                42.70
             |                           
            
                42.70
             | 
            
                42.71
             |                     
            
                26.48
             |                                 
            
                7,400
             |            
            
                 
             |                                       
         
    
        
            | 
                1/7/2020
             | 
            
                +0.40 / +0.95%
             |             
            
                41.80
             |           
            
                42.70
             |               
            
                41.70
             |                           
            
                42.70
             | 
            
                42.64
             |                     
            
                26.48
             |                                 
            
                7,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/6/2020
             | 
            
                0.00 / 0.00%
             |             
            
                42.30
             |           
            
                42.30
             |               
            
                42.30
             |                           
            
                42.30
             | 
            
                42.30
             |                     
            
                26.23
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2020
             | 
            
                -0.10 / -0.24%
             |             
            
                42.40
             |           
            
                42.40
             |               
            
                42.30
             |                           
            
                42.30
             | 
            
                42.31
             |                     
            
                26.23
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/2/2020
             | 
            
                0.00 / 0.00%
             |             
            
                42.80
             |           
            
                42.80
             |               
            
                42.30
             |                           
            
                42.40
             | 
            
                42.51
             |                     
            
                26.30
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/31/2019
             | 
            
                -0.10 / -0.24%
             |             
            
                42.50
             |           
            
                43.50
             |               
            
                42.40
             |                           
            
                42.40
             | 
            
                42.55
             |                     
            
                26.30
             |                                 
            
                2,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/30/2019
             | 
            
                -0.20 / -0.47%
             |             
            
                42.70
             |           
            
                42.70
             |               
            
                42.50
             |                           
            
                42.50
             | 
            
                42.59
             |                     
            
                26.36
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2019
             | 
            
                0.00 / 0.00%
             |             
            
                44.00
             |           
            
                44.00
             |               
            
                42.70
             |                           
            
                42.70
             | 
            
                43.03
             |                     
            
                26.48
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2019
             | 
            
                -0.30 / -0.70%
             |             
            
                43.00
             |           
            
                43.00
             |               
            
                42.70
             |                           
            
                42.70
             | 
            
                42.96
             |                     
            
                26.48
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2019
             | 
            
                +0.50 / +1.18%
             |             
            
                42.50
             |           
            
                43.00
             |               
            
                42.50
             |                           
            
                43.00
             | 
            
                42.60
             |                     
            
                26.67
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
         
    
    
 |