| 
                 
                    Closing price on 6/7/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    37.50 | 
                 
                
                    | High | 
                    37.50 | 
                 
                
                    | Low | 
                    37.00 | 
                     
                
                    | Volume | 
                    9,800 | 
                                 
                
                    | Split-adjusted Price | 
                    20.83 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2019
             | 
            
                0.00 / 0.00%
             |             
            
                37.70
             |           
            
                38.00
             |               
            
                37.60
             |                           
            
                38.00
             | 
            
                37.72
             |                     
            
                21.11
             |                                 
            
                500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2019
             | 
            
                -0.50 / -1.30%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                37.60
             |                           
            
                38.00
             | 
            
                37.94
             |                     
            
                21.11
             |                                 
            
                4,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.50
             |           
            
                38.50
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                21.39
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.50
             |           
            
                38.50
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                21.39
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2019
             | 
            
                -0.10 / -0.26%
             |             
            
                38.60
             |           
            
                38.60
             |               
            
                38.00
             |                           
            
                38.50
             | 
            
                38.43
             |                     
            
                21.39
             |                                 
            
                2,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/28/2019
             | 
            
                +0.10 / +0.26%
             |             
            
                38.40
             |           
            
                38.60
             |               
            
                38.40
             |                           
            
                38.60
             | 
            
                38.49
             |                     
            
                21.44
             |                                 
            
                4,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2019
             | 
            
                +0.40 / +1.05%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                37.90
             |                           
            
                38.50
             | 
            
                38.47
             |                     
            
                21.39
             |                                 
            
                6,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/24/2019
             | 
            
                -1.40 / -3.54%
             |             
            
                38.20
             |           
            
                38.20
             |               
            
                37.70
             |                           
            
                38.10
             | 
            
                38.07
             |                     
            
                21.16
             |                                 
            
                1,400
             |            
            
                 
             |                                       
         
    
        
            | 
                5/23/2019
             | 
            
                0.00 / 0.00%
             |             
            
                39.50
             |           
            
                40.00
             |               
            
                39.50
             |                           
            
                39.50
             | 
            
                39.58
             |                     
            
                21.94
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/22/2019
             | 
            
                +0.50 / +1.28%
             |             
            
                40.50
             |           
            
                40.50
             |               
            
                38.00
             |                           
            
                39.50
             | 
            
                38.50
             |                     
            
                21.94
             |                                 
            
                5,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/21/2019
             | 
            
                -0.50 / -1.27%
             |             
            
                40.80
             |           
            
                40.80
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.11
             |                     
            
                21.66
             |                                 
            
                1,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/20/2019
             | 
            
                0.00 / 0.00%
             |             
            
                40.00
             |           
            
                40.00
             |               
            
                39.00
             |                           
            
                39.50
             | 
            
                39.52
             |                     
            
                21.94
             |                                 
            
                2,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/17/2019
             | 
            
                -1.90 / -4.59%
             |             
            
                40.00
             |           
            
                40.00
             |               
            
                39.50
             |                           
            
                39.50
             | 
            
                39.55
             |                     
            
                21.94
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/16/2019
             | 
            
                0.00 / 0.00%
             |             
            
                41.40
             |           
            
                41.40
             |               
            
                41.40
             |                           
            
                41.40
             | 
            
                41.40
             |                     
            
                23.00
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                5/15/2019
             | 
            
                +0.90 / +2.22%
             |             
            
                41.00
             |           
            
                41.40
             |               
            
                40.00
             |                           
            
                41.40
             | 
            
                40.85
             |                     
            
                23.00
             |                                 
            
                400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/14/2019
             | 
            
                -0.50 / -1.22%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                39.10
             |                           
            
                40.50
             | 
            
                39.60
             |                     
            
                22.50
             |                                 
            
                2,100
             |            
            
                 
             |                                       
         
    
        
            | 
                5/13/2019
             | 
            
                +2.00 / +5.13%
             |             
            
                39.00
             |           
            
                41.00
             |               
            
                39.00
             |                           
            
                41.00
             | 
            
                39.88
             |                     
            
                22.77
             |                                 
            
                2,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/10/2019
             | 
            
                +0.50 / +1.30%
             |             
            
                38.50
             |           
            
                39.00
             |               
            
                38.50
             |                           
            
                39.00
             | 
            
                38.74
             |                     
            
                21.66
             |                                 
            
                1,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/9/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.50
             |           
            
                38.50
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                21.39
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/8/2019
             | 
            
                0.00 / 0.00%
             |             
            
                38.50
             |           
            
                38.50
             |               
            
                38.00
             |                           
            
                38.50
             | 
            
                38.27
             |                     
            
                21.39
             |                                 
            
                4,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/7/2019
             | 
            
                0.00 / 0.00%
             |             
            
                42.20
             |           
            
                42.20
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.75
             |                     
            
                21.39
             |                                 
            
                1,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/6/2019
             | 
            
                -1.10 / -2.78%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.77
             |                     
            
                21.39
             |                                 
            
                13,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/3/2019
             | 
            
                -0.40 / -1.00%
             |             
            
                39.60
             |           
            
                41.00
             |               
            
                39.60
             |                           
            
                39.60
             | 
            
                40.11
             |                     
            
                22.00
             |                                 
            
                10,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/2/2019
             | 
            
                -1.50 / -3.61%
             |             
            
                41.00
             |           
            
                41.00
             |               
            
                40.00
             |                           
            
                40.00
             | 
            
                40.34
             |                     
            
                22.22
             |                                 
            
                6,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2019
             | 
            
                -1.40 / -3.26%
             |             
            
                42.50
             |           
            
                42.50
             |               
            
                41.00
             |                           
            
                41.50
             | 
            
                41.69
             |                     
            
                23.05
             |                                 
            
                8,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2019
             | 
            
                -0.10 / -0.23%
             |             
            
                43.00
             |           
            
                43.50
             |               
            
                42.90
             |                           
            
                42.90
             | 
            
                43.31
             |                     
            
                23.83
             |                                 
            
                10,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2019
             | 
            
                -2.00 / -4.44%
             |             
            
                42.60
             |           
            
                44.00
             |               
            
                42.00
             |                           
            
                43.00
             | 
            
                42.89
             |                     
            
                23.89
             |                                 
            
                10,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |