| 
                 
                    Closing price on 11/28/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.10 | 
                 
                
                    | High | 
                    4.30 | 
                 
                
                    | Low | 
                    4.10 | 
                     
                
                    | Volume | 
                    375,315 | 
                                 
                
                    | Split-adjusted Price | 
                    4.20 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
SPI Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/24/2017
             | 
            
                +0.30 / +7.50%
             |             
            
                4.00
             |           
            
                4.30
             |               
            
                3.90
             |                           
            
                4.30
             | 
            
                4.14
             |                     
            
                4.30
             |                                 
            
                405,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/23/2017
             | 
            
                -0.10 / -2.44%
             |             
            
                4.00
             |           
            
                4.20
             |               
            
                3.90
             |                           
            
                4.00
             | 
            
                4.02
             |                     
            
                4.00
             |                                 
            
                254,577
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2017
             | 
            
                -0.10 / -2.38%
             |             
            
                4.20
             |           
            
                4.20
             |               
            
                4.00
             |                           
            
                4.10
             | 
            
                4.03
             |                     
            
                4.10
             |                                 
            
                194,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2017
             | 
            
                -0.10 / -2.33%
             |             
            
                4.30
             |           
            
                4.30
             |               
            
                4.10
             |                           
            
                4.20
             | 
            
                4.16
             |                     
            
                4.20
             |                                 
            
                207,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/20/2017
             | 
            
                +0.30 / +7.50%
             |             
            
                4.10
             |           
            
                4.40
             |               
            
                3.90
             |                           
            
                4.30
             | 
            
                4.19
             |                     
            
                4.30
             |                                 
            
                718,330
             |            
            
                 
             |                                       
         
    
        
            | 
                11/17/2017
             | 
            
                -0.30 / -6.98%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.00
             |                           
            
                4.00
             | 
            
                4.14
             |                     
            
                4.00
             |                                 
            
                253,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2017
             | 
            
                +0.20 / +4.88%
             |             
            
                4.20
             |           
            
                4.50
             |               
            
                4.00
             |                           
            
                4.30
             | 
            
                4.25
             |                     
            
                4.30
             |                                 
            
                629,270
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2017
             | 
            
                -0.20 / -4.65%
             |             
            
                4.00
             |           
            
                4.10
             |               
            
                3.90
             |                           
            
                4.10
             | 
            
                3.92
             |                     
            
                4.10
             |                                 
            
                1,201,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2017
             | 
            
                -0.40 / -8.51%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.30
             | 
            
                4.33
             |                     
            
                4.30
             |                                 
            
                619,319
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2017
             | 
            
                -0.50 / -9.62%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.70
             |                           
            
                4.70
             | 
            
                4.77
             |                     
            
                4.70
             |                                 
            
                729,277
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2017
             | 
            
                -0.10 / -1.89%
             |             
            
                5.10
             |           
            
                5.20
             |               
            
                5.00
             |                           
            
                5.20
             | 
            
                5.09
             |                     
            
                5.20
             |                                 
            
                644,343
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.10
             |                           
            
                5.30
             | 
            
                5.18
             |                     
            
                5.30
             |                                 
            
                252,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                4.90
             |                           
            
                5.30
             | 
            
                5.07
             |                     
            
                5.30
             |                                 
            
                999,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2017
             | 
            
                -0.10 / -1.85%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.33
             |                     
            
                5.30
             |                                 
            
                410,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2017
             | 
            
                +0.30 / +5.88%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.10
             |                           
            
                5.40
             | 
            
                5.32
             |                     
            
                5.40
             |                                 
            
                581,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2017
             | 
            
                -0.30 / -5.56%
             |             
            
                5.20
             |           
            
                5.40
             |               
            
                5.10
             |                           
            
                5.10
             | 
            
                5.21
             |                     
            
                5.10
             |                                 
            
                329,951
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.10
             |                           
            
                5.40
             | 
            
                5.29
             |                     
            
                5.40
             |                                 
            
                325,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2017
             | 
            
                -0.10 / -1.82%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                5.40
             |                                 
            
                510,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.30
             |                           
            
                5.50
             | 
            
                5.42
             |                     
            
                5.50
             |                                 
            
                260,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2017
             | 
            
                -0.10 / -1.79%
             |             
            
                5.60
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.59
             |                     
            
                5.50
             |                                 
            
                504,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/27/2017
             | 
            
                +0.20 / +3.70%
             |             
            
                5.60
             |           
            
                5.70
             |               
            
                5.50
             |                           
            
                5.60
             | 
            
                5.59
             |                     
            
                5.60
             |                                 
            
                1,224,401
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2017
             | 
            
                +0.20 / +3.85%
             |             
            
                5.20
             |           
            
                5.60
             |               
            
                5.10
             |                           
            
                5.40
             | 
            
                5.30
             |                     
            
                5.40
             |                                 
            
                679,335
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/25/2017
             | 
            
                -0.20 / -3.70%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.33
             |                     
            
                5.20
             |                                 
            
                375,341
             |            
            
                 
             |                                       
         
    
        
            | 
                10/24/2017
             | 
            
                +0.10 / +1.89%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.37
             |                     
            
                5.40
             |                                 
            
                322,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/23/2017
             | 
            
                -0.10 / -1.85%
             |             
            
                5.30
             |           
            
                5.50
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                5.30
             |                                 
            
                227,900
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2017
             | 
            
                +0.10 / +1.89%
             |             
            
                5.30
             |           
            
                5.50
             |               
            
                5.30
             |                           
            
                5.40
             | 
            
                5.35
             |                     
            
                5.40
             |                                 
            
                251,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2017
             | 
            
                -0.20 / -3.64%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.30
             |                           
            
                5.30
             | 
            
                5.40
             |                     
            
                5.30
             |                                 
            
                256,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/18/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.60
             |           
            
                5.60
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.52
             |                     
            
                5.50
             |                                 
            
                299,000
             |  
            
                 
             |                                                              
             
    
         
    
    
 |