| 
                 
                    Closing price on 5/7/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.90 | 
                 
                
                    | High | 
                    2.00 | 
                 
                
                    | Low | 
                    1.80 | 
                     
                
                    | Volume | 
                    301,900 | 
                                 
                
                    | Split-adjusted Price | 
                    2.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SPI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/7/2018
             | 
            
                +0.10 / +5.26%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                2.00
             | 
            
                1.93
             |                     
            
                2.00
             |                                 
            
                301,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2018
             | 
            
                -0.10 / -5.00%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.84
             |                     
            
                1.90
             |                                 
            
                455,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.06
             |                     
            
                2.00
             |                                 
            
                162,200
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2018
             | 
            
                +0.10 / +5.26%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                2.00
             | 
            
                1.98
             |                     
            
                2.00
             |                                 
            
                101,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2018
             | 
            
                -0.10 / -5.00%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.87
             |                     
            
                1.90
             |                                 
            
                365,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2018
             | 
            
                -0.20 / -9.09%
             |             
            
                2.10
             |           
            
                2.20
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.04
             |                     
            
                2.00
             |                                 
            
                388,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2018
             | 
            
                -0.20 / -8.33%
             |             
            
                2.40
             |           
            
                2.40
             |               
            
                2.20
             |                           
            
                2.20
             | 
            
                2.20
             |                     
            
                2.20
             |                                 
            
                316,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2018
             | 
            
                +0.10 / +4.35%
             |             
            
                2.40
             |           
            
                2.40
             |               
            
                2.20
             |                           
            
                2.40
             | 
            
                2.31
             |                     
            
                2.40
             |                                 
            
                152,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.20
             |           
            
                2.40
             |               
            
                2.20
             |                           
            
                2.30
             | 
            
                2.25
             |                     
            
                2.30
             |                                 
            
                40,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2018
             | 
            
                -0.10 / -4.17%
             |             
            
                2.40
             |           
            
                2.40
             |               
            
                2.20
             |                           
            
                2.30
             | 
            
                2.31
             |                     
            
                2.30
             |                                 
            
                294,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2018
             | 
            
                -0.10 / -4.00%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.40
             | 
            
                2.40
             |                     
            
                2.40
             |                                 
            
                53,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.40
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.50
             | 
            
                2.40
             |                     
            
                2.50
             |                                 
            
                211,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2018
             | 
            
                +0.20 / +8.70%
             |             
            
                2.30
             |           
            
                2.50
             |               
            
                2.20
             |                           
            
                2.50
             | 
            
                2.37
             |                     
            
                2.50
             |                                 
            
                380,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.30
             |           
            
                2.30
             |               
            
                2.20
             |                           
            
                2.30
             | 
            
                2.27
             |                     
            
                2.30
             |                                 
            
                76,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2018
             | 
            
                -0.10 / -4.17%
             |             
            
                2.40
             |           
            
                2.40
             |               
            
                2.20
             |                           
            
                2.30
             | 
            
                2.28
             |                     
            
                2.30
             |                                 
            
                297,800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2018
             | 
            
                -0.10 / -4.00%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.40
             | 
            
                2.38
             |                     
            
                2.40
             |                                 
            
                63,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.40
             |           
            
                2.50
             |               
            
                2.40
             |                           
            
                2.50
             | 
            
                2.42
             |                     
            
                2.50
             |                                 
            
                198,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2018
             | 
            
                +0.10 / +4.17%
             |             
            
                2.40
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.50
             | 
            
                2.42
             |                     
            
                2.50
             |                                 
            
                583,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2018
             | 
            
                +0.10 / +4.35%
             |             
            
                2.40
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.40
             | 
            
                2.39
             |                     
            
                2.40
             |                                 
            
                250,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2018
             | 
            
                -0.10 / -4.17%
             |             
            
                2.40
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.30
             | 
            
                2.37
             |                     
            
                2.30
             |                                 
            
                70,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2018
             | 
            
                -0.10 / -4.00%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.30
             |                           
            
                2.40
             | 
            
                2.40
             |                     
            
                2.40
             |                                 
            
                57,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2018
             | 
            
                -0.10 / -3.85%
             |             
            
                2.50
             |           
            
                2.50
             |               
            
                2.40
             |                           
            
                2.50
             | 
            
                2.42
             |                     
            
                2.50
             |                                 
            
                964,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.60
             |           
            
                2.60
             |               
            
                2.50
             |                           
            
                2.60
             | 
            
                2.52
             |                     
            
                2.60
             |                                 
            
                923,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.50
             |           
            
                2.70
             |               
            
                2.50
             |                           
            
                2.60
             | 
            
                2.55
             |                     
            
                2.60
             |                                 
            
                133,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2018
             | 
            
                -0.10 / -3.70%
             |             
            
                2.60
             |           
            
                2.70
             |               
            
                2.50
             |                           
            
                2.60
             | 
            
                2.61
             |                     
            
                2.60
             |                                 
            
                36,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2018
             | 
            
                +0.20 / +8.00%
             |             
            
                2.50
             |           
            
                2.70
             |               
            
                2.50
             |                           
            
                2.70
             | 
            
                2.59
             |                     
            
                2.70
             |                                 
            
                130,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2018
             | 
            
                -0.10 / -3.85%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.50
             |                           
            
                2.50
             | 
            
                2.60
             |                     
            
                2.50
             |                                 
            
                279,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.50
             |                           
            
                2.60
             | 
            
                2.60
             |                     
            
                2.60
             |                                 
            
                576,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2018
             | 
            
                -0.10 / -3.70%
             |             
            
                2.70
             |           
            
                2.90
             |               
            
                2.50
             |                           
            
                2.60
             | 
            
                2.70
             |                     
            
                2.60
             |                                 
            
                485,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2018
             | 
            
                0.00 / 0.00%
             |             
            
                2.70
             |           
            
                2.70
             |               
            
                2.60
             |                           
            
                2.70
             | 
            
                2.61
             |                     
            
                2.70
             |                                 
            
                765,100
             |  
            
                 
             |                                                              
             
    
         
    
    
 |