| 
                 
                    Closing price on 11/20/2015
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    12.20 | 
                 
                
                    | High | 
                    12.40 | 
                 
                
                    | Low | 
                    12.20 | 
                     
                
                    | Volume | 
                    227,070 | 
                                 
                
                    | Split-adjusted Price | 
                    12.30 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STB Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/20/2015
             | 
            
                +0.10 / +0.82%
             |             
            
                12.20
             |           
            
                12.40
             |               
            
                12.20
             |                           
            
                12.30
             | 
            
                12.33
             |                     
            
                12.30
             |                                 
            
                227,070
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2015
             | 
            
                -0.10 / -0.81%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                12.20
             |                           
            
                12.20
             | 
            
                12.27
             |                     
            
                12.20
             |                                 
            
                182,650
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/18/2015
             | 
            
                -0.20 / -1.60%
             |             
            
                12.50
             |           
            
                12.50
             |               
            
                12.30
             |                           
            
                12.30
             | 
            
                12.39
             |                     
            
                12.30
             |                                 
            
                254,490
             |            
            
                 
             |                                       
         
    
        
            | 
                11/17/2015
             | 
            
                0.00 / 0.00%
             |             
            
                12.50
             |           
            
                12.60
             |               
            
                12.40
             |                           
            
                12.50
             | 
            
                12.49
             |                     
            
                12.50
             |                                 
            
                218,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2015
             | 
            
                0.00 / 0.00%
             |             
            
                12.60
             |           
            
                12.70
             |               
            
                12.50
             |                           
            
                12.50
             | 
            
                12.52
             |                     
            
                12.50
             |                                 
            
                415,230
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2015
             | 
            
                +0.20 / +1.63%
             |             
            
                12.30
             |           
            
                12.70
             |               
            
                12.30
             |                           
            
                12.50
             | 
            
                12.53
             |                     
            
                12.50
             |                                 
            
                348,770
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2015
             | 
            
                -0.40 / -3.15%
             |             
            
                12.40
             |           
            
                12.60
             |               
            
                12.20
             |                           
            
                12.30
             | 
            
                12.33
             |                     
            
                12.30
             |                                 
            
                700,990
             |            
            
                 
             |                                       
         
    
        
            | 
                11/11/2015
             | 
            
                -0.10 / -0.78%
             |             
            
                12.80
             |           
            
                12.90
             |               
            
                12.70
             |                           
            
                12.70
             | 
            
                12.77
             |                     
            
                12.70
             |                                 
            
                192,840
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2015
             | 
            
                -0.10 / -0.78%
             |             
            
                12.90
             |           
            
                12.90
             |               
            
                12.70
             |                           
            
                12.80
             | 
            
                12.78
             |                     
            
                12.80
             |                                 
            
                384,380
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2015
             | 
            
                0.00 / 0.00%
             |             
            
                13.00
             |           
            
                13.00
             |               
            
                12.80
             |                           
            
                12.90
             | 
            
                12.94
             |                     
            
                12.90
             |                                 
            
                328,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2015
             | 
            
                0.00 / 0.00%
             |             
            
                12.90
             |           
            
                13.10
             |               
            
                12.90
             |                           
            
                12.90
             | 
            
                12.97
             |                     
            
                12.90
             |                                 
            
                303,760
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2015
             | 
            
                -0.20 / -1.53%
             |             
            
                13.10
             |           
            
                13.10
             |               
            
                12.90
             |                           
            
                12.90
             | 
            
                13.00
             |                     
            
                12.90
             |                                 
            
                376,870
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/4/2015
             | 
            
                -0.10 / -0.76%
             |             
            
                13.20
             |           
            
                13.30
             |               
            
                13.10
             |                           
            
                13.10
             | 
            
                13.19
             |                     
            
                13.10
             |                                 
            
                364,340
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2015
             | 
            
                0.00 / 0.00%
             |             
            
                13.40
             |           
            
                13.40
             |               
            
                13.20
             |                           
            
                13.20
             | 
            
                13.29
             |                     
            
                13.20
             |                                 
            
                261,830
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2015
             | 
            
                -0.40 / -2.94%
             |             
            
                13.50
             |           
            
                13.50
             |               
            
                13.20
             |                           
            
                13.20
             | 
            
                13.33
             |                     
            
                13.20
             |                                 
            
                356,920
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2015
             | 
            
                -0.10 / -0.73%
             |             
            
                13.60
             |           
            
                13.70
             |               
            
                13.30
             |                           
            
                13.60
             | 
            
                13.50
             |                     
            
                13.60
             |                                 
            
                919,010
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/29/2015
             | 
            
                +0.20 / +1.48%
             |             
            
                13.50
             |           
            
                13.70
             |               
            
                13.10
             |                           
            
                13.70
             | 
            
                13.36
             |                     
            
                13.70
             |                                 
            
                1,053,360
             |            
            
                 
             |                                       
         
    
        
            | 
                10/28/2015
             | 
            
                -0.20 / -1.46%
             |             
            
                13.70
             |           
            
                13.90
             |               
            
                13.50
             |                           
            
                13.50
             | 
            
                13.62
             |                     
            
                13.50
             |                                 
            
                534,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/27/2015
             | 
            
                -0.40 / -2.84%
             |             
            
                14.00
             |           
            
                14.10
             |               
            
                13.60
             |                           
            
                13.70
             | 
            
                13.88
             |                     
            
                13.70
             |                                 
            
                836,200
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2015
             | 
            
                -0.20 / -1.40%
             |             
            
                14.50
             |           
            
                14.50
             |               
            
                14.10
             |                           
            
                14.10
             | 
            
                14.26
             |                     
            
                14.10
             |                                 
            
                706,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/23/2015
             | 
            
                -0.10 / -0.69%
             |             
            
                14.50
             |           
            
                14.60
             |               
            
                14.30
             |                           
            
                14.30
             | 
            
                14.41
             |                     
            
                14.30
             |                                 
            
                176,090
             |            
            
                 
             |                                       
         
    
        
            | 
                10/22/2015
             | 
            
                +0.30 / +2.13%
             |             
            
                14.10
             |           
            
                14.70
             |               
            
                14.10
             |                           
            
                14.40
             | 
            
                14.46
             |                     
            
                14.40
             |                                 
            
                751,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/21/2015
             | 
            
                -0.10 / -0.70%
             |             
            
                14.20
             |           
            
                14.40
             |               
            
                14.10
             |                           
            
                14.10
             | 
            
                14.22
             |                     
            
                14.10
             |                                 
            
                423,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2015
             | 
            
                -0.50 / -3.40%
             |             
            
                14.50
             |           
            
                14.60
             |               
            
                14.20
             |                           
            
                14.20
             | 
            
                14.37
             |                     
            
                14.20
             |                                 
            
                675,580
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2015
             | 
            
                -0.10 / -0.68%
             |             
            
                14.80
             |           
            
                14.90
             |               
            
                14.70
             |                           
            
                14.70
             | 
            
                14.75
             |                     
            
                14.70
             |                                 
            
                494,220
             |            
            
                 
             |                                       
         
    
        
            | 
                10/16/2015
             | 
            
                -2.80 / -15.91%
             |             
            
                14.50
             |           
            
                15.20
             |               
            
                14.00
             |                           
            
                14.80
             | 
            
                14.57
             |                     
            
                14.80
             |                                 
            
                1,689,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/15/2015
             | 
            
                -0.20 / -1.12%
             |             
            
                18.10
             |           
            
                18.10
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.81
             |                     
            
                14.52
             |                                 
            
                757,350
             |            
            
                 
             |                                       
         
    
        
            | 
                10/14/2015
             | 
            
                -0.30 / -1.66%
             |             
            
                18.20
             |           
            
                18.20
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                18.06
             |                     
            
                14.68
             |                                 
            
                510,240
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/13/2015
             | 
            
                -0.10 / -0.55%
             |             
            
                18.20
             |           
            
                18.20
             |               
            
                18.00
             |                           
            
                18.10
             | 
            
                18.12
             |                     
            
                14.93
             |                                 
            
                430,230
             |            
            
                 
             |                                       
         
    
        
            | 
                10/12/2015
             | 
            
                +0.10 / +0.55%
             |             
            
                18.00
             |           
            
                18.30
             |               
            
                17.80
             |                           
            
                18.20
             | 
            
                18.07
             |                     
            
                15.01
             |                                 
            
                759,930
             |  
            
                 
             |                                                              
             
    
         
    
    
 |