| 
                 
                    Closing price on 1/8/2018
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    3.50 | 
                 
                
                    | High | 
                    3.60 | 
                 
                
                    | Low | 
                    3.40 | 
                     
                
                    | Volume | 
                    370,070 | 
                                 
                
                    | Split-adjusted Price | 
                    3.60 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SPI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                1/8/2018
             | 
            
                +0.20 / +5.88%
             |             
            
                3.50
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.60
             | 
            
                3.51
             |                     
            
                3.60
             |                                 
            
                370,070
             |            
            
                 
             |                                       
         
    
        
            | 
                1/5/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.30
             |                           
            
                3.40
             | 
            
                3.43
             |                     
            
                3.40
             |                                 
            
                606,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/4/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.40
             |           
            
                3.50
             |               
            
                3.30
             |                           
            
                3.40
             | 
            
                3.41
             |                     
            
                3.40
             |                                 
            
                384,500
             |            
            
                 
             |                                       
         
    
        
            | 
                1/3/2018
             | 
            
                0.00 / 0.00%
             |             
            
                3.40
             |           
            
                3.60
             |               
            
                3.40
             |                           
            
                3.40
             | 
            
                3.49
             |                     
            
                3.40
             |                                 
            
                318,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                1/2/2018
             | 
            
                -0.10 / -2.86%
             |             
            
                3.50
             |           
            
                3.50
             |               
            
                3.40
             |                           
            
                3.40
             | 
            
                3.44
             |                     
            
                3.40
             |                                 
            
                268,390
             |            
            
                 
             |                                       
         
    
        
            | 
                12/29/2017
             | 
            
                -0.20 / -5.41%
             |             
            
                3.80
             |           
            
                3.80
             |               
            
                3.40
             |                           
            
                3.50
             | 
            
                3.53
             |                     
            
                3.50
             |                                 
            
                367,220
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/28/2017
             | 
            
                +0.10 / +2.78%
             |             
            
                3.30
             |           
            
                3.80
             |               
            
                3.30
             |                           
            
                3.70
             | 
            
                3.41
             |                     
            
                3.70
             |                                 
            
                1,541,710
             |            
            
                 
             |                                       
         
    
        
            | 
                12/27/2017
             | 
            
                -0.30 / -7.69%
             |             
            
                3.60
             |           
            
                3.60
             |               
            
                3.60
             |                           
            
                3.60
             | 
            
                3.60
             |                     
            
                3.60
             |                                 
            
                266,315
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/26/2017
             | 
            
                -0.10 / -2.50%
             |             
            
                4.00
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.94
             |                     
            
                3.90
             |                                 
            
                457,750
             |            
            
                 
             |                                       
         
    
        
            | 
                12/25/2017
             | 
            
                -0.30 / -6.98%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.09
             |                     
            
                4.00
             |                                 
            
                312,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/22/2017
             | 
            
                +0.20 / +4.88%
             |             
            
                4.40
             |           
            
                4.50
             |               
            
                4.10
             |                           
            
                4.30
             | 
            
                4.40
             |                     
            
                4.30
             |                                 
            
                1,322,440
             |            
            
                 
             |                                       
         
    
        
            | 
                12/21/2017
             | 
            
                +0.30 / +7.89%
             |             
            
                3.80
             |           
            
                4.10
             |               
            
                3.80
             |                           
            
                4.10
             | 
            
                4.06
             |                     
            
                4.10
             |                                 
            
                888,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.80
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.73
             |                     
            
                3.80
             |                                 
            
                55,310
             |            
            
                 
             |                                       
         
    
        
            | 
                12/19/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.81
             |                     
            
                3.80
             |                                 
            
                178,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/18/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.86
             |                     
            
                3.80
             |                                 
            
                369,310
             |            
            
                 
             |                                       
         
    
        
            | 
                12/15/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.76
             |                     
            
                3.80
             |                                 
            
                518,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/14/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.81
             |                     
            
                3.80
             |                                 
            
                233,152
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2017
             | 
            
                +0.10 / +2.70%
             |             
            
                3.70
             |           
            
                4.00
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.84
             |                     
            
                3.80
             |                                 
            
                489,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2017
             | 
            
                -0.20 / -5.13%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.70
             | 
            
                3.75
             |                     
            
                3.70
             |                                 
            
                278,600
             |            
            
                 
             |                                       
         
    
        
            | 
                12/11/2017
             | 
            
                +0.10 / +2.63%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.82
             |                     
            
                3.90
             |                                 
            
                421,453
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/8/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.90
             |           
            
                3.90
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.85
             |                     
            
                3.80
             |                                 
            
                169,855
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                4.10
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.88
             |                     
            
                3.80
             |                                 
            
                375,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2017
             | 
            
                0.00 / 0.00%
             |             
            
                3.80
             |           
            
                3.90
             |               
            
                3.70
             |                           
            
                3.80
             | 
            
                3.77
             |                     
            
                3.80
             |                                 
            
                285,387
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2017
             | 
            
                -0.10 / -2.56%
             |             
            
                3.90
             |           
            
                4.00
             |               
            
                3.80
             |                           
            
                3.80
             | 
            
                3.89
             |                     
            
                3.80
             |                                 
            
                379,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/4/2017
             | 
            
                -0.10 / -2.50%
             |             
            
                4.10
             |           
            
                4.10
             |               
            
                3.80
             |                           
            
                3.90
             | 
            
                3.94
             |                     
            
                3.90
             |                                 
            
                344,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/1/2017
             | 
            
                +0.10 / +2.56%
             |             
            
                3.90
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                4.05
             |                     
            
                4.00
             |                                 
            
                368,763
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/30/2017
             | 
            
                -0.10 / -2.50%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                3.90
             | 
            
                3.96
             |                     
            
                3.90
             |                                 
            
                480,677
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2017
             | 
            
                -0.20 / -4.76%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.09
             |                     
            
                4.00
             |                                 
            
                186,150
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/28/2017
             | 
            
                +0.10 / +2.44%
             |             
            
                4.10
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.14
             |                     
            
                4.20
             |                                 
            
                375,315
             |            
            
                 
             |                                       
         
    
        
            | 
                11/27/2017
             | 
            
                -0.20 / -4.65%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.10
             | 
            
                4.18
             |                     
            
                4.10
             |                                 
            
                376,800
             |  
            
                 
             |                                                              
             
    
         
    
    
 |