| 
                 
                    Closing price on 5/23/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    39.50 | 
                 
                
                    | High | 
                    40.00 | 
                 
                
                    | Low | 
                    39.50 | 
                     
                
                    | Volume | 
                    600 | 
                                 
                
                    | Split-adjusted Price | 
                    21.94 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SLS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2019
             | 
            
                +0.40 / +0.90%
             |             
            
                45.00
             |           
            
                48.00
             |               
            
                45.00
             |                           
            
                45.00
             | 
            
                45.59
             |                     
            
                25.00
             |                                 
            
                2,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2019
             | 
            
                -4.60 / -9.35%
             |             
            
                48.70
             |           
            
                48.70
             |               
            
                44.30
             |                           
            
                44.60
             | 
            
                44.87
             |                     
            
                24.77
             |                                 
            
                26,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2019
             | 
            
                +0.10 / +0.20%
             |             
            
                49.10
             |           
            
                49.20
             |               
            
                49.10
             |                           
            
                49.20
             | 
            
                49.12
             |                     
            
                27.33
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2019
             | 
            
                -1.10 / -2.19%
             |             
            
                50.00
             |           
            
                50.50
             |               
            
                49.10
             |                           
            
                49.10
             | 
            
                50.05
             |                     
            
                27.27
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2019
             | 
            
                0.00 / 0.00%
             |             
            
                50.20
             |           
            
                50.20
             |               
            
                50.20
             |                           
            
                50.20
             | 
            
                50.20
             |                     
            
                27.88
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2019
             | 
            
                -1.30 / -2.52%
             |             
            
                50.00
             |           
            
                50.40
             |               
            
                50.00
             |                           
            
                50.20
             | 
            
                50.09
             |                     
            
                27.88
             |                                 
            
                1,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2019
             | 
            
                +0.10 / +0.19%
             |             
            
                53.00
             |           
            
                53.00
             |               
            
                51.50
             |                           
            
                51.50
             | 
            
                52.27
             |                     
            
                28.61
             |                                 
            
                1,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2019
             | 
            
                -0.40 / -0.77%
             |             
            
                51.90
             |           
            
                51.90
             |               
            
                50.20
             |                           
            
                51.40
             | 
            
                50.34
             |                     
            
                28.55
             |                                 
            
                5,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2019
             | 
            
                -0.10 / -0.19%
             |             
            
                50.20
             |           
            
                51.80
             |               
            
                50.00
             |                           
            
                51.80
             | 
            
                50.22
             |                     
            
                28.77
             |                                 
            
                2,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/9/2019
             | 
            
                -1.00 / -1.89%
             |             
            
                52.00
             |           
            
                52.50
             |               
            
                50.60
             |                           
            
                51.90
             | 
            
                51.06
             |                     
            
                28.83
             |                                 
            
                19,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2019
             | 
            
                -0.20 / -0.38%
             |             
            
                52.00
             |           
            
                52.90
             |               
            
                50.60
             |                           
            
                52.90
             | 
            
                51.00
             |                     
            
                29.38
             |                                 
            
                18,100
             |  
            
                 
             |                                                              
             
    
         
    
    
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