| 
                 
                    Closing price on 3/22/2019
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.10 | 
                 
                
                    | High | 
                    1.20 | 
                 
                
                    | Low | 
                    1.00 | 
                     
                
                    | Volume | 
                    336,600 | 
                                 
                
                    | Split-adjusted Price | 
                    1.20 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SPI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                3/22/2019
             | 
            
                +0.10 / +9.09%
             |             
            
                1.10
             |           
            
                1.20
             |               
            
                1.00
             |                           
            
                1.20
             | 
            
                1.11
             |                     
            
                1.20
             |                                 
            
                336,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2019
             | 
            
                -0.10 / -8.33%
             |             
            
                1.20
             |           
            
                1.30
             |               
            
                1.10
             |                           
            
                1.10
             | 
            
                1.15
             |                     
            
                1.10
             |                                 
            
                474,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/20/2019
             | 
            
                -0.10 / -7.69%
             |             
            
                1.30
             |           
            
                1.30
             |               
            
                1.20
             |                           
            
                1.20
             | 
            
                1.20
             |                     
            
                1.20
             |                                 
            
                889,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/19/2019
             | 
            
                +0.10 / +8.33%
             |             
            
                1.30
             |           
            
                1.30
             |               
            
                1.30
             |                           
            
                1.30
             | 
            
                1.30
             |                     
            
                1.30
             |                                 
            
                1,640,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2019
             | 
            
                +0.10 / +9.09%
             |             
            
                1.10
             |           
            
                1.20
             |               
            
                1.00
             |                           
            
                1.20
             | 
            
                1.16
             |                     
            
                1.20
             |                                 
            
                913,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2019
             | 
            
                +0.10 / +10.00%
             |             
            
                0.90
             |           
            
                1.10
             |               
            
                0.90
             |                           
            
                1.10
             | 
            
                1.02
             |                     
            
                1.10
             |                                 
            
                698,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.00
             |           
            
                1.00
             |               
            
                0.90
             |                           
            
                1.00
             | 
            
                0.95
             |                     
            
                1.00
             |                                 
            
                185,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/13/2019
             | 
            
                +0.10 / +11.11%
             |             
            
                0.90
             |           
            
                1.00
             |               
            
                0.80
             |                           
            
                1.00
             | 
            
                0.93
             |                     
            
                1.00
             |                                 
            
                220,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/12/2019
             | 
            
                0.00 / 0.00%
             |             
            
                1.00
             |           
            
                1.00
             |               
            
                0.80
             |                           
            
                0.90
             | 
            
                0.90
             |                     
            
                0.90
             |                                 
            
                211,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.90
             |           
            
                1.00
             |               
            
                0.90
             |                           
            
                0.90
             | 
            
                0.91
             |                     
            
                0.90
             |                                 
            
                224,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2019
             | 
            
                -0.10 / -10.00%
             |             
            
                1.10
             |           
            
                1.10
             |               
            
                0.90
             |                           
            
                0.90
             | 
            
                1.01
             |                     
            
                0.90
             |                                 
            
                959,500
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2019
             | 
            
                +0.10 / +11.11%
             |             
            
                1.00
             |           
            
                1.00
             |               
            
                1.00
             |                           
            
                1.00
             | 
            
                1.00
             |                     
            
                1.00
             |                                 
            
                273,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/6/2019
             | 
            
                +0.10 / +12.50%
             |             
            
                0.80
             |           
            
                0.90
             |               
            
                0.80
             |                           
            
                0.90
             | 
            
                0.86
             |                     
            
                0.90
             |                                 
            
                1,007,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/5/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.80
             |           
            
                0.90
             |               
            
                0.70
             |                           
            
                0.80
             | 
            
                0.82
             |                     
            
                0.80
             |                                 
            
                300,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/4/2019
             | 
            
                +0.10 / +14.29%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.70
             |                           
            
                0.80
             | 
            
                0.80
             |                     
            
                0.80
             |                                 
            
                316,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/1/2019
             | 
            
                -0.10 / -12.50%
             |             
            
                0.70
             |           
            
                0.90
             |               
            
                0.70
             |                           
            
                0.70
             | 
            
                0.74
             |                     
            
                0.70
             |                                 
            
                169,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/28/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.70
             |                           
            
                0.80
             | 
            
                0.78
             |                     
            
                0.80
             |                                 
            
                89,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/27/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.80
             |           
            
                0.90
             |               
            
                0.70
             |                           
            
                0.80
             | 
            
                0.82
             |                     
            
                0.80
             |                                 
            
                458,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/26/2019
             | 
            
                +0.10 / +14.29%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.60
             |                           
            
                0.80
             | 
            
                0.77
             |                     
            
                0.80
             |                                 
            
                907,400
             |            
            
                 
             |                                       
         
    
        
            | 
                2/25/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.70
             |           
            
                0.70
             |               
            
                0.60
             |                           
            
                0.70
             | 
            
                0.70
             |                     
            
                0.70
             |                                 
            
                66,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/22/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.70
             |           
            
                0.70
             |               
            
                0.60
             |                           
            
                0.70
             | 
            
                0.67
             |                     
            
                0.70
             |                                 
            
                121,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/21/2019
             | 
            
                -0.10 / -12.50%
             |             
            
                0.80
             |           
            
                0.80
             |               
            
                0.70
             |                           
            
                0.70
             | 
            
                0.70
             |                     
            
                0.70
             |                                 
            
                128,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/20/2019
             | 
            
                +0.10 / +14.29%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.60
             |                           
            
                0.80
             | 
            
                0.73
             |                     
            
                0.80
             |                                 
            
                397,100
             |            
            
                 
             |                                       
         
    
        
            | 
                2/19/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.70
             |                           
            
                0.70
             | 
            
                0.73
             |                     
            
                0.70
             |                                 
            
                85,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/18/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.60
             |                           
            
                0.70
             | 
            
                0.71
             |                     
            
                0.70
             |                                 
            
                309,700
             |            
            
                 
             |                                       
         
    
        
            | 
                2/15/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.60
             |                           
            
                0.70
             | 
            
                0.70
             |                     
            
                0.70
             |                                 
            
                284,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/14/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.80
             |           
            
                0.80
             |               
            
                0.70
             |                           
            
                0.70
             | 
            
                0.70
             |                     
            
                0.70
             |                                 
            
                24,000
             |            
            
                 
             |                                       
         
    
        
            | 
                2/13/2019
             | 
            
                0.00 / 0.00%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.70
             |                           
            
                0.70
             | 
            
                0.71
             |                     
            
                0.70
             |                                 
            
                170,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                2/12/2019
             | 
            
                -0.10 / -12.50%
             |             
            
                0.80
             |           
            
                0.80
             |               
            
                0.70
             |                           
            
                0.70
             | 
            
                0.78
             |                     
            
                0.70
             |                                 
            
                114,500
             |            
            
                 
             |                                       
         
    
        
            | 
                2/11/2019
             | 
            
                +0.10 / +14.29%
             |             
            
                0.70
             |           
            
                0.80
             |               
            
                0.60
             |                           
            
                0.80
             | 
            
                0.74
             |                     
            
                0.80
             |                                 
            
                225,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |