| 
                 
                    Closing price on 10/2/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    41.80 | 
                 
                
                    | High | 
                    41.80 | 
                 
                
                    | Low | 
                    40.40 | 
                     
                
                    | Volume | 
                    7,300 | 
                                 
                
                    | Split-adjusted Price | 
                    22.72 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/2/2019
             | 
            
                -0.50 / -1.21%
             |             
            
                41.80
             |           
            
                41.80
             |               
            
                40.40
             |                           
            
                40.90
             | 
            
                41.25
             |                     
            
                22.72
             |                                 
            
                7,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/1/2019
             | 
            
                +0.10 / +0.24%
             |             
            
                42.00
             |           
            
                42.00
             |               
            
                41.40
             |                           
            
                41.40
             | 
            
                41.46
             |                     
            
                23.00
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/30/2019
             | 
            
                -0.70 / -1.67%
             |             
            
                42.00
             |           
            
                42.00
             |               
            
                41.10
             |                           
            
                41.30
             | 
            
                41.47
             |                     
            
                22.94
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                9/27/2019
             | 
            
                +0.50 / +1.20%
             |             
            
                41.50
             |           
            
                42.00
             |               
            
                40.60
             |                           
            
                42.00
             | 
            
                41.17
             |                     
            
                23.33
             |                                 
            
                3,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/26/2019
             | 
            
                -1.50 / -3.49%
             |             
            
                43.00
             |           
            
                43.00
             |               
            
                41.50
             |                           
            
                41.50
             | 
            
                42.57
             |                     
            
                23.05
             |                                 
            
                3,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/25/2019
             | 
            
                +1.90 / +4.62%
             |             
            
                42.90
             |           
            
                43.00
             |               
            
                42.90
             |                           
            
                43.00
             | 
            
                42.99
             |                     
            
                23.89
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/24/2019
             | 
            
                -1.70 / -3.97%
             |             
            
                41.60
             |           
            
                41.60
             |               
            
                41.10
             |                           
            
                41.10
             | 
            
                41.45
             |                     
            
                22.83
             |                                 
            
                2,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/23/2019
             | 
            
                -0.20 / -0.47%
             |             
            
                43.00
             |           
            
                43.00
             |               
            
                40.20
             |                           
            
                42.80
             | 
            
                42.08
             |                     
            
                23.77
             |                                 
            
                7,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/20/2019
             | 
            
                -0.60 / -1.38%
             |             
            
                43.60
             |           
            
                43.90
             |               
            
                43.00
             |                           
            
                43.00
             | 
            
                43.22
             |                     
            
                23.89
             |                                 
            
                20,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2019
             | 
            
                0.00 / 0.00%
             |             
            
                44.50
             |           
            
                44.50
             |               
            
                43.00
             |                           
            
                43.60
             | 
            
                43.57
             |                     
            
                24.22
             |                                 
            
                23,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/18/2019
             | 
            
                +3.50 / +8.73%
             |             
            
                40.10
             |           
            
                43.70
             |               
            
                40.10
             |                           
            
                43.60
             | 
            
                42.45
             |                     
            
                24.22
             |                                 
            
                21,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/17/2019
             | 
            
                -0.40 / -0.99%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                40.10
             |                           
            
                40.10
             | 
            
                40.48
             |                     
            
                22.27
             |                                 
            
                3,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2019
             | 
            
                +2.50 / +6.58%
             |             
            
                39.00
             |           
            
                41.00
             |               
            
                38.60
             |                           
            
                40.50
             | 
            
                39.51
             |                     
            
                22.50
             |                                 
            
                5,500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2019
             | 
            
                +1.20 / +3.26%
             |             
            
                36.90
             |           
            
                38.00
             |               
            
                36.20
             |                           
            
                38.00
             | 
            
                36.71
             |                     
            
                21.11
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2019
             | 
            
                -1.30 / -3.41%
             |             
            
                36.80
             |           
            
                36.80
             |               
            
                36.80
             |                           
            
                36.80
             | 
            
                36.80
             |                     
            
                20.44
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                9/11/2019
             | 
            
                +1.00 / +2.70%
             |             
            
                36.50
             |           
            
                38.10
             |               
            
                36.10
             |                           
            
                38.10
             | 
            
                36.19
             |                     
            
                21.16
             |                                 
            
                4,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/10/2019
             | 
            
                -1.00 / -2.62%
             |             
            
                37.10
             |           
            
                37.20
             |               
            
                37.10
             |                           
            
                37.10
             | 
            
                37.14
             |                     
            
                20.61
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.10
             |           
            
                38.10
             |               
            
                38.10
             |                           
            
                38.10
             | 
            
                38.10
             |                     
            
                21.16
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.10
             |           
            
                38.10
             |               
            
                38.10
             |                           
            
                38.10
             | 
            
                38.10
             |                     
            
                21.16
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.10
             |           
            
                38.10
             |               
            
                38.10
             |                           
            
                38.10
             | 
            
                38.10
             |                     
            
                21.16
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/4/2019
             | 
            
                -0.90 / -2.31%
             |             
            
                37.60
             |           
            
                38.10
             |               
            
                37.60
             |                           
            
                38.10
             | 
            
                37.69
             |                     
            
                21.16
             |                                 
            
                3,400
             |            
            
                 
             |                                       
         
    
        
            | 
                9/3/2019
             | 
            
                0.00 / 0.00%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                38.50
             |                           
            
                39.00
             | 
            
                38.55
             |                     
            
                21.66
             |                                 
            
                3,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2019
             | 
            
                +0.10 / +0.26%
             |             
            
                38.50
             |           
            
                39.00
             |               
            
                38.50
             |                           
            
                39.00
             | 
            
                38.52
             |                     
            
                21.66
             |                                 
            
                5,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2019
             | 
            
                +0.40 / +1.04%
             |             
            
                38.50
             |           
            
                39.00
             |               
            
                38.00
             |                           
            
                38.90
             | 
            
                38.40
             |                     
            
                21.61
             |                                 
            
                14,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/28/2019
             | 
            
                -0.50 / -1.28%
             |             
            
                38.60
             |           
            
                38.60
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                21.39
             |                                 
            
                2,600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/27/2019
             | 
            
                +0.10 / +0.26%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                21.66
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2019
             | 
            
                -1.00 / -2.51%
             |             
            
                39.90
             |           
            
                40.00
             |               
            
                38.90
             |                           
            
                38.90
             | 
            
                39.45
             |                     
            
                21.61
             |                                 
            
                1,100
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2019
             | 
            
                0.00 / 0.00%
             |             
            
                39.00
             |           
            
                39.90
             |               
            
                39.00
             |                           
            
                39.90
             | 
            
                39.45
             |                     
            
                22.16
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2019
             | 
            
                +0.50 / +1.27%
             |             
            
                41.30
             |           
            
                41.30
             |               
            
                38.50
             |                           
            
                39.90
             | 
            
                39.32
             |                     
            
                22.16
             |                                 
            
                7,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/21/2019
             | 
            
                -0.40 / -1.01%
             |             
            
                39.60
             |           
            
                39.90
             |               
            
                39.40
             |                           
            
                39.40
             | 
            
                39.49
             |                     
            
                21.89
             |                                 
            
                9,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |