| 
                 
                    Closing price on 6/20/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.50 | 
                 
                
                    | High | 
                    1.50 | 
                 
                
                    | Low | 
                    1.40 | 
                     
                
                    | Volume | 
                    238,100 | 
                                 
                
                    | Split-adjusted Price | 
                    1.50 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SPI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                6/20/2018
             | 
            
                +0.10 / +7.14%
             |             
            
                1.50
             |           
            
                1.50
             |               
            
                1.40
             |                           
            
                1.50
             | 
            
                1.44
             |                     
            
                1.50
             |                                 
            
                238,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/19/2018
             | 
            
                -0.10 / -6.67%
             |             
            
                1.50
             |           
            
                1.60
             |               
            
                1.40
             |                           
            
                1.40
             | 
            
                1.46
             |                     
            
                1.40
             |                                 
            
                418,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/18/2018
             | 
            
                -0.10 / -6.25%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.50
             |                           
            
                1.50
             | 
            
                1.59
             |                     
            
                1.50
             |                                 
            
                254,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/15/2018
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.50
             |                           
            
                1.60
             | 
            
                1.60
             |                     
            
                1.60
             |                                 
            
                153,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/14/2018
             | 
            
                0.00 / 0.00%
             |             
            
                1.60
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.61
             |                     
            
                1.60
             |                                 
            
                388,900
             |            
            
                 
             |                                       
         
    
        
            | 
                6/13/2018
             | 
            
                -0.10 / -5.88%
             |             
            
                1.70
             |           
            
                1.70
             |               
            
                1.60
             |                           
            
                1.60
             | 
            
                1.61
             |                     
            
                1.60
             |                                 
            
                653,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/12/2018
             | 
            
                0.00 / 0.00%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                295,200
             |            
            
                 
             |                                       
         
    
        
            | 
                6/11/2018
             | 
            
                0.00 / 0.00%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.73
             |                     
            
                1.70
             |                                 
            
                84,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/8/2018
             | 
            
                -0.10 / -5.56%
             |             
            
                1.80
             |           
            
                1.90
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.74
             |                     
            
                1.70
             |                                 
            
                836,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/7/2018
             | 
            
                -0.10 / -5.26%
             |             
            
                1.80
             |           
            
                1.90
             |               
            
                1.80
             |                           
            
                1.80
             | 
            
                1.80
             |                     
            
                1.80
             |                                 
            
                494,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/6/2018
             | 
            
                0.00 / 0.00%
             |             
            
                1.80
             |           
            
                1.90
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.84
             |                     
            
                1.90
             |                                 
            
                212,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/5/2018
             | 
            
                +0.10 / +5.56%
             |             
            
                1.90
             |           
            
                1.90
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.90
             |                     
            
                1.90
             |                                 
            
                603,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/4/2018
             | 
            
                +0.10 / +5.88%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.60
             |                           
            
                1.80
             | 
            
                1.76
             |                     
            
                1.80
             |                                 
            
                756,800
             |            
            
                 
             |                                       
         
    
        
            | 
                6/1/2018
             | 
            
                -0.10 / -5.56%
             |             
            
                1.80
             |           
            
                1.90
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.71
             |                     
            
                1.70
             |                                 
            
                1,043,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/31/2018
             | 
            
                -0.10 / -5.26%
             |             
            
                1.90
             |           
            
                1.90
             |               
            
                1.80
             |                           
            
                1.80
             | 
            
                1.80
             |                     
            
                1.80
             |                                 
            
                1,108,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/30/2018
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.89
             |                     
            
                1.90
             |                                 
            
                65,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/29/2018
             | 
            
                -0.10 / -5.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.91
             |                     
            
                1.90
             |                                 
            
                124,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/28/2018
             | 
            
                +0.10 / +5.26%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                2.00
             | 
            
                1.91
             |                     
            
                2.00
             |                                 
            
                120,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2018
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.99
             |                     
            
                1.90
             |                                 
            
                171,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2018
             | 
            
                -0.10 / -5.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.93
             |                     
            
                1.90
             |                                 
            
                364,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/23/2018
             | 
            
                +0.10 / +5.26%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                1.99
             |                     
            
                2.00
             |                                 
            
                149,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/22/2018
             | 
            
                -0.20 / -9.52%
             |             
            
                2.20
             |           
            
                2.20
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.98
             |                     
            
                1.90
             |                                 
            
                341,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2018
             | 
            
                -0.10 / -4.55%
             |             
            
                2.30
             |           
            
                2.30
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.11
             |                     
            
                2.10
             |                                 
            
                381,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2018
             | 
            
                -0.10 / -4.35%
             |             
            
                2.20
             |           
            
                2.30
             |               
            
                2.20
             |                           
            
                2.20
             | 
            
                2.21
             |                     
            
                2.20
             |                                 
            
                146,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2018
             | 
            
                +0.10 / +4.55%
             |             
            
                2.10
             |           
            
                2.40
             |               
            
                2.00
             |                           
            
                2.30
             | 
            
                2.29
             |                     
            
                2.30
             |                                 
            
                70,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/16/2018
             | 
            
                -0.20 / -8.33%
             |             
            
                2.20
             |           
            
                2.30
             |               
            
                2.20
             |                           
            
                2.20
             | 
            
                2.20
             |                     
            
                2.20
             |                                 
            
                217,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/15/2018
             | 
            
                -0.10 / -4.00%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.40
             | 
            
                2.32
             |                     
            
                2.40
             |                                 
            
                467,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2018
             | 
            
                +0.10 / +4.17%
             |             
            
                2.40
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.50
             | 
            
                2.42
             |                     
            
                2.50
             |                                 
            
                149,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.30
             |           
            
                2.50
             |               
            
                2.20
             |                           
            
                2.40
             | 
            
                2.40
             |                     
            
                2.40
             |                                 
            
                282,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.40
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.40
             | 
            
                2.43
             |                     
            
                2.40
             |                                 
            
                279,900
             |  
            
                 
             |                                                              
             
    
         
    
    
 |