| 
                 
                    Closing price on 5/3/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    5.40 | 
                 
                
                    | High | 
                    5.80 | 
                 
                
                    | Low | 
                    5.40 | 
                     
                
                    | Volume | 
                    657 | 
                                 
                
                    | Split-adjusted Price | 
                    2.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/3/2017
             | 
            
                +0.20 / +3.57%
             |             
            
                5.40
             |           
            
                5.80
             |               
            
                5.40
             |                           
            
                5.80
             | 
            
                5.60
             |                     
            
                2.30
             |                                 
            
                657
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2017
             | 
            
                +0.10 / +1.82%
             |             
            
                5.60
             |           
            
                5.60
             |               
            
                5.60
             |                           
            
                5.60
             | 
            
                5.60
             |                     
            
                2.22
             |                                 
            
                165
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2017
             | 
            
                +0.10 / +1.85%
             |             
            
                5.70
             |           
            
                5.90
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.65
             |                     
            
                2.18
             |                                 
            
                29,537
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2017
             | 
            
                +0.10 / +1.89%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.40
             |                     
            
                2.14
             |                                 
            
                6,603
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/25/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.30
             |           
            
                5.40
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.30
             |                     
            
                2.10
             |                                 
            
                11,300
             |            
            
                 
             |                                       
         
    
        
            | 
                4/24/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.30
             |               
            
                5.20
             |                           
            
                5.30
             | 
            
                5.28
             |                     
            
                2.10
             |                                 
            
                9,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/21/2017
             | 
            
                +0.10 / +1.92%
             |             
            
                4.70
             |           
            
                5.30
             |               
            
                4.70
             |                           
            
                5.30
             | 
            
                5.16
             |                     
            
                2.10
             |                                 
            
                7,003
             |            
            
                 
             |                                       
         
    
        
            | 
                4/20/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                2.06
             |                                 
            
                6,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/19/2017
             | 
            
                +0.10 / +1.96%
             |             
            
                5.20
             |           
            
                5.20
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.20
             |                     
            
                2.06
             |                                 
            
                101
             |            
            
                 
             |                                       
         
    
        
            | 
                4/18/2017
             | 
            
                +0.10 / +2.00%
             |             
            
                5.00
             |           
            
                5.40
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.08
             |                     
            
                2.02
             |                                 
            
                3,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/17/2017
             | 
            
                +0.10 / +2.04%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                1.98
             |                                 
            
                23,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2017
             | 
            
                -0.20 / -3.92%
             |             
            
                4.70
             |           
            
                5.10
             |               
            
                4.70
             |                           
            
                4.90
             | 
            
                5.10
             |                     
            
                1.94
             |                                 
            
                76,276
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2017
             | 
            
                -0.40 / -7.27%
             |             
            
                5.40
             |           
            
                5.40
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.09
             |                     
            
                2.02
             |                                 
            
                55,408
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                2.18
             |                                 
            
                644
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                2.18
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                4/10/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                2.18
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.50
             |           
            
                5.50
             |               
            
                5.50
             |                           
            
                5.50
             | 
            
                5.50
             |                     
            
                2.18
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2017
             | 
            
                +0.10 / +1.85%
             |             
            
                5.40
             |           
            
                5.50
             |               
            
                5.40
             |                           
            
                5.50
             | 
            
                5.40
             |                     
            
                2.18
             |                                 
            
                232
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2017
             | 
            
                +0.20 / +3.85%
             |             
            
                5.70
             |           
            
                5.70
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.61
             |                     
            
                2.14
             |                                 
            
                1,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2017
             | 
            
                -0.20 / -3.70%
             |             
            
                5.80
             |           
            
                5.80
             |               
            
                5.20
             |                           
            
                5.20
             | 
            
                5.80
             |                     
            
                2.06
             |                                 
            
                1,632
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/31/2017
             | 
            
                -0.50 / -8.47%
             |             
            
                5.70
             |           
            
                5.90
             |               
            
                5.40
             |                           
            
                5.40
             | 
            
                5.72
             |                     
            
                2.14
             |                                 
            
                8,065
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                2.34
             |                                 
            
                32
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                2.34
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                2.34
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.90
             |           
            
                5.90
             |               
            
                5.90
             |                           
            
                5.90
             | 
            
                5.90
             |                     
            
                2.34
             |                                 
            
                300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/24/2017
             | 
            
                +0.20 / +3.51%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                5.80
             |                           
            
                5.90
             | 
            
                6.03
             |                     
            
                2.34
             |                                 
            
                6,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/23/2017
             | 
            
                -0.60 / -9.52%
             |             
            
                6.20
             |           
            
                6.20
             |               
            
                5.70
             |                           
            
                5.70
             | 
            
                6.20
             |                     
            
                2.26
             |                                 
            
                2,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/22/2017
             | 
            
                0.00 / 0.00%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                2.50
             |                                 
            
                700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/21/2017
             | 
            
                +0.20 / +3.28%
             |             
            
                6.30
             |           
            
                6.30
             |               
            
                6.30
             |                           
            
                6.30
             | 
            
                6.30
             |                     
            
                2.50
             |                                 
            
                401
             |            
            
                 
             |                                       
         
    
        
            | 
                3/20/2017
             | 
            
                -0.10 / -1.61%
             |             
            
                6.10
             |           
            
                6.10
             |               
            
                6.10
             |                           
            
                6.10
             | 
            
                6.10
             |                     
            
                2.42
             |                                 
            
                814
             |  
            
                 
             |                                                              
             
    
         
    
    
 |