| 
                 
                    Closing price on 7/16/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    39.50 | 
                 
                
                    | High | 
                    40.00 | 
                 
                
                    | Low | 
                    38.60 | 
                     
                
                    | Volume | 
                    10,500 | 
                                 
                
                    | Split-adjusted Price | 
                    21.66 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/16/2019
             | 
            
                -1.10 / -2.74%
             |             
            
                39.50
             |           
            
                40.00
             |               
            
                38.60
             |                           
            
                39.00
             | 
            
                38.94
             |                     
            
                21.66
             |                                 
            
                10,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/15/2019
             | 
            
                -2.00 / -4.75%
             |             
            
                41.00
             |           
            
                42.40
             |               
            
                40.00
             |                           
            
                40.10
             | 
            
                40.42
             |                     
            
                22.27
             |                                 
            
                6,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/12/2019
             | 
            
                -2.10 / -4.75%
             |             
            
                43.00
             |           
            
                43.00
             |               
            
                42.00
             |                           
            
                42.10
             | 
            
                42.38
             |                     
            
                23.39
             |                                 
            
                8,200
             |            
            
                 
             |                                       
         
    
        
            | 
                7/11/2019
             | 
            
                -1.00 / -2.21%
             |             
            
                46.50
             |           
            
                46.50
             |               
            
                44.00
             |                           
            
                44.20
             | 
            
                44.76
             |                     
            
                24.55
             |                                 
            
                4,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/10/2019
             | 
            
                +4.00 / +9.71%
             |             
            
                42.00
             |           
            
                45.30
             |               
            
                42.00
             |                           
            
                45.20
             | 
            
                45.22
             |                     
            
                25.11
             |                                 
            
                36,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/9/2019
             | 
            
                +3.70 / +9.87%
             |             
            
                38.00
             |           
            
                41.20
             |               
            
                38.00
             |                           
            
                41.20
             | 
            
                40.36
             |                     
            
                22.89
             |                                 
            
                15,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/8/2019
             | 
            
                +0.10 / +0.27%
             |             
            
                38.00
             |           
            
                38.60
             |               
            
                37.50
             |                           
            
                37.50
             | 
            
                38.06
             |                     
            
                20.83
             |                                 
            
                4,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/5/2019
             | 
            
                -0.10 / -0.27%
             |             
            
                38.00
             |           
            
                38.00
             |               
            
                37.40
             |                           
            
                37.40
             | 
            
                37.45
             |                     
            
                20.77
             |                                 
            
                4,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/4/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.20
             |           
            
                38.20
             |               
            
                37.10
             |                           
            
                37.50
             | 
            
                37.41
             |                     
            
                20.83
             |                                 
            
                10,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/3/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.00
             |           
            
                38.00
             |               
            
                37.10
             |                           
            
                37.50
             | 
            
                37.54
             |                     
            
                20.83
             |                                 
            
                5,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/2/2019
             | 
            
                -0.30 / -0.79%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                37.40
             |                           
            
                37.50
             | 
            
                37.62
             |                     
            
                20.83
             |                                 
            
                2,100
             |            
            
                 
             |                                       
         
    
        
            | 
                7/1/2019
             | 
            
                +0.30 / +0.80%
             |             
            
                37.40
             |           
            
                38.50
             |               
            
                37.40
             |                           
            
                37.80
             | 
            
                37.48
             |                     
            
                21.00
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/28/2019
             | 
            
                -0.70 / -1.83%
             |             
            
                37.40
             |           
            
                38.20
             |               
            
                37.40
             |                           
            
                37.50
             | 
            
                37.93
             |                     
            
                20.83
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/27/2019
             | 
            
                +1.10 / +2.96%
             |             
            
                37.30
             |           
            
                38.20
             |               
            
                37.20
             |                           
            
                38.20
             | 
            
                37.78
             |                     
            
                21.22
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/26/2019
             | 
            
                -0.20 / -0.54%
             |             
            
                37.10
             |           
            
                37.10
             |               
            
                37.10
             |                           
            
                37.10
             | 
            
                37.10
             |                     
            
                20.61
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                6/25/2019
             | 
            
                -0.10 / -0.27%
             |             
            
                37.10
             |           
            
                37.50
             |               
            
                37.10
             |                           
            
                37.30
             | 
            
                37.23
             |                     
            
                20.72
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/24/2019
             | 
            
                0.00 / 0.00%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                37.00
             |                           
            
                37.40
             | 
            
                37.22
             |                     
            
                20.77
             |                                 
            
                4,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/21/2019
             | 
            
                +0.20 / +0.54%
             |             
            
                37.20
             |           
            
                37.40
             |               
            
                37.20
             |                           
            
                37.40
             | 
            
                37.22
             |                     
            
                20.77
             |                                 
            
                1,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/20/2019
             | 
            
                -0.90 / -2.36%
             |             
            
                37.10
             |           
            
                38.00
             |               
            
                37.10
             |                           
            
                37.20
             | 
            
                37.25
             |                     
            
                20.66
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2019
             | 
            
                -0.80 / -2.06%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                38.10
             |                           
            
                38.10
             | 
            
                38.74
             |                     
            
                21.16
             |                                 
            
                2,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                38.90
             |                           
            
                38.90
             | 
            
                38.90
             |                     
            
                21.61
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                6/17/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                38.90
             |                           
            
                38.90
             | 
            
                38.90
             |                     
            
                21.61
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                38.90
             |                           
            
                38.90
             | 
            
                38.90
             |                     
            
                21.61
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2019
             | 
            
                +0.60 / +1.57%
             |             
            
                39.80
             |           
            
                39.80
             |               
            
                38.90
             |                           
            
                38.90
             | 
            
                39.40
             |                     
            
                21.61
             |                                 
            
                900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2019
             | 
            
                +0.30 / +0.79%
             |             
            
                38.00
             |           
            
                38.30
             |               
            
                38.00
             |                           
            
                38.30
             | 
            
                38.03
             |                     
            
                21.27
             |                                 
            
                1,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2019
             | 
            
                +0.40 / +1.06%
             |             
            
                38.00
             |           
            
                38.00
             |               
            
                38.00
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                21.11
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/10/2019
             | 
            
                +0.10 / +0.27%
             |             
            
                37.60
             |           
            
                37.60
             |               
            
                37.60
             |                           
            
                37.60
             | 
            
                37.60
             |                     
            
                20.89
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2019
             | 
            
                +0.50 / +1.35%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                37.00
             |                           
            
                37.50
             | 
            
                37.23
             |                     
            
                20.83
             |                                 
            
                9,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2019
             | 
            
                -1.00 / -2.63%
             |             
            
                37.50
             |           
            
                37.50
             |               
            
                37.00
             |                           
            
                37.00
             | 
            
                37.11
             |                     
            
                20.55
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.30
             |           
            
                38.30
             |               
            
                36.90
             |                           
            
                38.00
             | 
            
                37.20
             |                     
            
                21.11
             |                                 
            
                8,100
             |  
            
                 
             |                                                              
             
    
         
    
    
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