| 
                 
                    Closing price on 10/16/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    49.00 | 
                 
                
                    | High | 
                    49.00 | 
                 
                
                    | Low | 
                    47.70 | 
                     
                
                    | Volume | 
                    17,400 | 
                                 
                
                    | Split-adjusted Price | 
                    26.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                10/16/2019
             | 
            
                -0.80 / -1.65%
             |             
            
                49.00
             |           
            
                49.00
             |               
            
                47.70
             |                           
            
                47.70
             | 
            
                48.02
             |                     
            
                26.50
             |                                 
            
                17,400
             |            
            
                 
             |                                       
         
    
        
            | 
                10/15/2019
             | 
            
                +1.00 / +2.11%
             |             
            
                47.50
             |           
            
                48.80
             |               
            
                47.50
             |                           
            
                48.50
             | 
            
                48.08
             |                     
            
                26.94
             |                                 
            
                11,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/14/2019
             | 
            
                +0.40 / +0.85%
             |             
            
                48.30
             |           
            
                50.80
             |               
            
                47.50
             |                           
            
                47.50
             | 
            
                48.51
             |                     
            
                26.38
             |                                 
            
                14,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/11/2019
             | 
            
                +3.00 / +6.80%
             |             
            
                44.20
             |           
            
                48.50
             |               
            
                44.20
             |                           
            
                47.10
             | 
            
                46.71
             |                     
            
                26.16
             |                                 
            
                62,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/10/2019
             | 
            
                +0.50 / +1.15%
             |             
            
                44.00
             |           
            
                44.50
             |               
            
                44.00
             |                           
            
                44.10
             | 
            
                44.18
             |                     
            
                24.50
             |                                 
            
                8,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/9/2019
             | 
            
                -0.60 / -1.36%
             |             
            
                44.40
             |           
            
                44.40
             |               
            
                43.60
             |                           
            
                43.60
             | 
            
                43.97
             |                     
            
                24.22
             |                                 
            
                10,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/8/2019
             | 
            
                +2.60 / +6.25%
             |             
            
                43.20
             |           
            
                44.20
             |               
            
                42.20
             |                           
            
                44.20
             | 
            
                43.68
             |                     
            
                24.55
             |                                 
            
                14,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/7/2019
             | 
            
                +0.10 / +0.24%
             |             
            
                41.50
             |           
            
                42.10
             |               
            
                41.50
             |                           
            
                41.60
             | 
            
                41.60
             |                     
            
                23.11
             |                                 
            
                3,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/4/2019
             | 
            
                +0.80 / +1.97%
             |             
            
                40.70
             |           
            
                41.50
             |               
            
                40.50
             |                           
            
                41.50
             | 
            
                40.71
             |                     
            
                23.05
             |                                 
            
                9,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/3/2019
             | 
            
                -0.20 / -0.49%
             |             
            
                40.90
             |           
            
                41.00
             |               
            
                40.70
             |                           
            
                40.70
             | 
            
                40.81
             |                     
            
                22.61
             |                                 
            
                800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
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