| 
                 
                    Closing price on 12/23/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    42.50 | 
                 
                
                    | High | 
                    43.00 | 
                 
                
                    | Low | 
                    42.20 | 
                     
                
                    | Volume | 
                    1,300 | 
                                 
                
                    | Split-adjusted Price | 
                    26.67 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/23/2019
             | 
            
                0.00 / 0.00%
             |             
            
                42.50
             |           
            
                43.00
             |               
            
                42.20
             |                           
            
                43.00
             | 
            
                42.90
             |                     
            
                26.67
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/20/2019
             | 
            
                0.00 / 0.00%
             |             
            
                43.00
             |           
            
                43.00
             |               
            
                43.00
             |                           
            
                43.00
             | 
            
                43.00
             |                     
            
                26.67
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/19/2019
             | 
            
                -0.60 / -1.38%
             |             
            
                43.20
             |           
            
                43.20
             |               
            
                43.00
             |                           
            
                43.00
             | 
            
                43.11
             |                     
            
                26.67
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/18/2019
             | 
            
                -1.10 / -2.46%
             |             
            
                44.00
             |           
            
                44.10
             |               
            
                43.10
             |                           
            
                43.60
             | 
            
                43.84
             |                     
            
                27.04
             |                                 
            
                3,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/17/2019
             | 
            
                0.00 / 0.00%
             |             
            
                44.70
             |           
            
                46.90
             |               
            
                44.00
             |                           
            
                44.70
             | 
            
                44.39
             |                     
            
                27.72
             |                                 
            
                3,300
             |            
            
                 
             |                                       
         
    
        
            | 
                12/16/2019
             | 
            
                0.00 / 0.00%
             |             
            
                44.70
             |           
            
                45.00
             |               
            
                44.70
             |                           
            
                44.70
             | 
            
                44.75
             |                     
            
                27.72
             |                                 
            
                1,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/13/2019
             | 
            
                -0.70 / -1.54%
             |             
            
                45.80
             |           
            
                45.80
             |               
            
                44.70
             |                           
            
                44.70
             | 
            
                45.22
             |                     
            
                27.72
             |                                 
            
                4,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/12/2019
             | 
            
                +0.10 / +0.22%
             |             
            
                45.50
             |           
            
                45.60
             |               
            
                45.40
             |                           
            
                45.40
             | 
            
                45.54
             |                     
            
                28.16
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/11/2019
             | 
            
                +0.40 / +0.89%
             |             
            
                46.00
             |           
            
                47.00
             |               
            
                45.30
             |                           
            
                45.30
             | 
            
                45.71
             |                     
            
                28.10
             |                                 
            
                4,200
             |            
            
                 
             |                                       
         
    
        
            | 
                12/10/2019
             | 
            
                +0.20 / +0.45%
             |             
            
                45.50
             |           
            
                45.50
             |               
            
                44.70
             |                           
            
                44.90
             | 
            
                44.88
             |                     
            
                27.85
             |                                 
            
                6,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/9/2019
             | 
            
                -0.30 / -0.67%
             |             
            
                46.00
             |           
            
                46.00
             |               
            
                44.60
             |                           
            
                44.70
             | 
            
                44.69
             |                     
            
                27.72
             |                                 
            
                3,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/6/2019
             | 
            
                +1.00 / +2.27%
             |             
            
                44.50
             |           
            
                45.10
             |               
            
                44.50
             |                           
            
                45.00
             | 
            
                44.87
             |                     
            
                27.91
             |                                 
            
                3,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/5/2019
             | 
            
                +0.90 / +2.09%
             |             
            
                47.00
             |           
            
                47.00
             |               
            
                43.70
             |                           
            
                44.00
             | 
            
                44.17
             |                     
            
                27.29
             |                                 
            
                3,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/4/2019
             | 
            
                0.00 / 0.00%
             |             
            
                43.20
             |           
            
                43.20
             |               
            
                43.00
             |                           
            
                43.10
             | 
            
                43.11
             |                     
            
                26.73
             |                                 
            
                14,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/3/2019
             | 
            
                +0.10 / +0.23%
             |             
            
                43.50
             |           
            
                43.50
             |               
            
                43.00
             |                           
            
                43.10
             | 
            
                43.11
             |                     
            
                26.73
             |                                 
            
                10,500
             |            
            
                 
             |                                       
         
    
        
            | 
                12/2/2019
             | 
            
                +0.30 / +0.70%
             |             
            
                43.00
             |           
            
                43.50
             |               
            
                43.00
             |                           
            
                43.00
             | 
            
                43.49
             |                     
            
                26.67
             |                                 
            
                12,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/29/2019
             | 
            
                +1.20 / +2.89%
             |             
            
                42.00
             |           
            
                42.80
             |               
            
                42.00
             |                           
            
                42.70
             | 
            
                42.25
             |                     
            
                26.48
             |                                 
            
                6,400
             |            
            
                 
             |                                       
         
    
        
            | 
                11/28/2019
             | 
            
                +0.10 / +0.24%
             |             
            
                41.50
             |           
            
                41.80
             |               
            
                41.50
             |                           
            
                41.50
             | 
            
                41.73
             |                     
            
                25.74
             |                                 
            
                11,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/27/2019
             | 
            
                +0.10 / +0.24%
             |             
            
                41.40
             |           
            
                41.60
             |               
            
                41.30
             |                           
            
                41.40
             | 
            
                41.34
             |                     
            
                25.68
             |                                 
            
                3,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/26/2019
             | 
            
                -0.40 / -0.96%
             |             
            
                41.10
             |           
            
                41.50
             |               
            
                41.10
             |                           
            
                41.30
             | 
            
                41.31
             |                     
            
                25.61
             |                                 
            
                4,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/25/2019
             | 
            
                +0.20 / +0.48%
             |             
            
                41.50
             |           
            
                41.70
             |               
            
                41.10
             |                           
            
                41.70
             | 
            
                41.26
             |                     
            
                25.86
             |                                 
            
                7,300
             |            
            
                 
             |                                       
         
    
        
            | 
                11/22/2019
             | 
            
                -0.30 / -0.72%
             |             
            
                41.70
             |           
            
                41.70
             |               
            
                40.00
             |                           
            
                41.50
             | 
            
                41.42
             |                     
            
                25.74
             |                                 
            
                9,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/21/2019
             | 
            
                +0.70 / +1.70%
             |             
            
                41.10
             |           
            
                41.80
             |               
            
                41.00
             |                           
            
                41.80
             | 
            
                41.19
             |                     
            
                25.92
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/20/2019
             | 
            
                0.00 / 0.00%
             |             
            
                41.10
             |           
            
                41.10
             |               
            
                41.10
             |                           
            
                41.10
             | 
            
                41.10
             |                     
            
                25.49
             |                                 
            
                4,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/19/2019
             | 
            
                +0.10 / +0.24%
             |             
            
                41.50
             |           
            
                41.70
             |               
            
                41.10
             |                           
            
                41.10
             | 
            
                41.47
             |                     
            
                25.49
             |                                 
            
                3,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/18/2019
             | 
            
                -0.40 / -0.97%
             |             
            
                41.80
             |           
            
                41.90
             |               
            
                41.00
             |                           
            
                41.00
             | 
            
                41.44
             |                     
            
                25.43
             |                                 
            
                1,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/15/2019
             | 
            
                +0.70 / +1.72%
             |             
            
                40.80
             |           
            
                41.40
             |               
            
                40.80
             |                           
            
                41.40
             | 
            
                40.93
             |                     
            
                25.68
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/14/2019
             | 
            
                +0.20 / +0.49%
             |             
            
                41.00
             |           
            
                41.50
             |               
            
                40.50
             |                           
            
                40.70
             | 
            
                40.94
             |                     
            
                25.24
             |                                 
            
                4,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/13/2019
             | 
            
                +0.60 / +1.50%
             |             
            
                40.70
             |           
            
                40.80
             |               
            
                40.50
             |                           
            
                40.50
             | 
            
                40.66
             |                     
            
                25.12
             |                                 
            
                1,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/12/2019
             | 
            
                +0.40 / +1.01%
             |             
            
                40.00
             |           
            
                40.00
             |               
            
                39.80
             |                           
            
                39.90
             | 
            
                39.94
             |                     
            
                24.75
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |