| 
                 
                    Closing price on 8/16/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    40.20 | 
                 
                
                    | High | 
                    40.40 | 
                 
                
                    | Low | 
                    40.20 | 
                     
                
                    | Volume | 
                    2,800 | 
                                 
                
                    | Split-adjusted Price | 
                    22.33 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                8/16/2019
             | 
            
                +0.10 / +0.25%
             |             
            
                40.20
             |           
            
                40.40
             |               
            
                40.20
             |                           
            
                40.20
             | 
            
                40.31
             |                     
            
                22.33
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2019
             | 
            
                0.00 / 0.00%
             |             
            
                40.10
             |           
            
                41.50
             |               
            
                40.10
             |                           
            
                40.10
             | 
            
                40.21
             |                     
            
                22.27
             |                                 
            
                3,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/14/2019
             | 
            
                -1.10 / -2.67%
             |             
            
                41.20
             |           
            
                41.20
             |               
            
                40.10
             |                           
            
                40.10
             | 
            
                40.99
             |                     
            
                22.27
             |                                 
            
                5,200
             |            
            
                 
             |                                       
         
    
        
            | 
                8/13/2019
             | 
            
                -0.40 / -0.96%
             |             
            
                41.60
             |           
            
                42.50
             |               
            
                41.20
             |                           
            
                41.20
             | 
            
                41.35
             |                     
            
                22.89
             |                                 
            
                7,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2019
             | 
            
                +0.40 / +0.97%
             |             
            
                41.30
             |           
            
                41.60
             |               
            
                41.30
             |                           
            
                41.60
             | 
            
                41.40
             |                     
            
                23.11
             |                                 
            
                600
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2019
             | 
            
                +0.20 / +0.49%
             |             
            
                41.20
             |           
            
                41.30
             |               
            
                41.00
             |                           
            
                41.20
             | 
            
                41.08
             |                     
            
                22.89
             |                                 
            
                19,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/8/2019
             | 
            
                0.00 / 0.00%
             |             
            
                41.00
             |           
            
                41.50
             |               
            
                40.80
             |                           
            
                41.00
             | 
            
                41.02
             |                     
            
                22.77
             |                                 
            
                10,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/7/2019
             | 
            
                -1.00 / -2.38%
             |             
            
                42.00
             |           
            
                42.00
             |               
            
                40.90
             |                           
            
                41.00
             | 
            
                41.13
             |                     
            
                22.77
             |                                 
            
                5,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/6/2019
             | 
            
                +2.20 / +5.53%
             |             
            
                40.00
             |           
            
                43.30
             |               
            
                39.90
             |                           
            
                42.00
             | 
            
                41.10
             |                     
            
                23.33
             |                                 
            
                11,500
             |            
            
                 
             |                                       
         
    
        
            | 
                8/5/2019
             | 
            
                +0.30 / +0.76%
             |             
            
                39.70
             |           
            
                40.00
             |               
            
                39.60
             |                           
            
                39.80
             | 
            
                39.76
             |                     
            
                22.11
             |                                 
            
                1,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/2/2019
             | 
            
                -0.10 / -0.25%
             |             
            
                39.60
             |           
            
                39.60
             |               
            
                39.50
             |                           
            
                39.50
             | 
            
                39.55
             |                     
            
                21.94
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/1/2019
             | 
            
                +0.60 / +1.54%
             |             
            
                39.60
             |           
            
                39.60
             |               
            
                39.60
             |                           
            
                39.60
             | 
            
                39.60
             |                     
            
                22.00
             |                                 
            
                1,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/31/2019
             | 
            
                +0.30 / +0.78%
             |             
            
                39.00
             |           
            
                39.00
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.00
             |                     
            
                21.66
             |                                 
            
                700
             |            
            
                 
             |                                       
         
    
        
            | 
                7/30/2019
             | 
            
                +0.20 / +0.52%
             |             
            
                38.50
             |           
            
                39.00
             |               
            
                38.50
             |                           
            
                38.70
             | 
            
                38.70
             |                     
            
                21.50
             |                                 
            
                5,360
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/29/2019
             | 
            
                -0.30 / -0.77%
             |             
            
                38.80
             |           
            
                38.80
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.74
             |                     
            
                21.39
             |                                 
            
                500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/26/2019
             | 
            
                -0.10 / -0.26%
             |             
            
                38.90
             |           
            
                38.90
             |               
            
                38.80
             |                           
            
                38.80
             | 
            
                38.88
             |                     
            
                21.55
             |                                 
            
                2,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/25/2019
             | 
            
                -0.10 / -0.26%
             |             
            
                39.10
             |           
            
                39.10
             |               
            
                38.70
             |                           
            
                38.90
             | 
            
                38.98
             |                     
            
                21.61
             |                                 
            
                5,400
             |            
            
                 
             |                                       
         
    
        
            | 
                7/24/2019
             | 
            
                -1.30 / -3.23%
             |             
            
                39.10
             |           
            
                39.50
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.20
             |                     
            
                21.66
             |                                 
            
                3,742
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/23/2019
             | 
            
                -0.30 / -0.74%
             |             
            
                40.50
             |           
            
                40.60
             |               
            
                40.30
             |                           
            
                40.30
             | 
            
                40.40
             |                     
            
                22.39
             |                                 
            
                3,900
             |            
            
                 
             |                                       
         
    
        
            | 
                7/22/2019
             | 
            
                +0.30 / +0.74%
             |             
            
                40.30
             |           
            
                41.20
             |               
            
                40.30
             |                           
            
                40.60
             | 
            
                40.57
             |                     
            
                22.55
             |                                 
            
                9,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/19/2019
             | 
            
                +1.30 / +3.33%
             |             
            
                38.60
             |           
            
                40.70
             |               
            
                38.40
             |                           
            
                40.30
             | 
            
                38.98
             |                     
            
                22.39
             |                                 
            
                10,300
             |            
            
                 
             |                                       
         
    
        
            | 
                7/18/2019
             | 
            
                -0.40 / -1.02%
             |             
            
                39.40
             |           
            
                39.40
             |               
            
                39.00
             |                           
            
                39.00
             | 
            
                39.08
             |                     
            
                21.66
             |                                 
            
                4,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/17/2019
             | 
            
                +0.40 / +1.03%
             |             
            
                38.50
             |           
            
                40.00
             |               
            
                37.50
             |                           
            
                39.40
             | 
            
                38.58
             |                     
            
                21.89
             |                                 
            
                5,300
             |            
            
                 
             |                                       
         
    
        
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
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