| 
                 
                    Closing price on 4/22/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    14.80 | 
                 
                
                    | High | 
                    14.80 | 
                 
                
                    | Low | 
                    14.70 | 
                     
                
                    | Volume | 
                    510,150 | 
                                 
                
                    | Split-adjusted Price | 
                    6.63 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/22/2016
             | 
            
                -0.30 / -2.00%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.70
             |                           
            
                14.70
             | 
            
                14.75
             |                     
            
                6.63
             |                                 
            
                510,150
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2016
             | 
            
                +0.10 / +0.67%
             |             
            
                15.00
             |           
            
                15.00
             |               
            
                14.90
             |                           
            
                15.00
             | 
            
                14.98
             |                     
            
                6.77
             |                                 
            
                1,760
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2016
             | 
            
                -0.60 / -3.87%
             |             
            
                14.70
             |           
            
                15.50
             |               
            
                14.70
             |                           
            
                14.90
             | 
            
                14.85
             |                     
            
                6.72
             |                                 
            
                3,770
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2016
             | 
            
                +0.20 / +1.31%
             |             
            
                15.40
             |           
            
                15.70
             |               
            
                14.90
             |                           
            
                15.50
             | 
            
                15.06
             |                     
            
                6.99
             |                                 
            
                3,520
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/15/2016
             | 
            
                -0.60 / -3.77%
             |             
            
                15.50
             |           
            
                15.90
             |               
            
                15.30
             |                           
            
                15.30
             | 
            
                15.60
             |                     
            
                6.90
             |                                 
            
                3,910
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2016
             | 
            
                +0.60 / +3.92%
             |             
            
                16.30
             |           
            
                16.30
             |               
            
                15.90
             |                           
            
                15.90
             | 
            
                16.19
             |                     
            
                7.17
             |                                 
            
                1,050
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2016
             | 
            
                -1.10 / -6.71%
             |             
            
                16.30
             |           
            
                16.40
             |               
            
                15.30
             |                           
            
                15.30
             | 
            
                15.95
             |                     
            
                6.90
             |                                 
            
                8,840
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2016
             | 
            
                +0.70 / +4.46%
             |             
            
                15.50
             |           
            
                16.40
             |               
            
                14.70
             |                           
            
                16.40
             | 
            
                15.02
             |                     
            
                7.40
             |                                 
            
                4,660
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2016
             | 
            
                -1.10 / -6.55%
             |             
            
                16.00
             |           
            
                16.80
             |               
            
                15.70
             |                           
            
                15.70
             | 
            
                15.72
             |                     
            
                7.08
             |                                 
            
                18,960
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2016
             | 
            
                +0.20 / +1.20%
             |             
            
                16.00
             |           
            
                16.80
             |               
            
                16.00
             |                           
            
                16.80
             | 
            
                16.40
             |                     
            
                7.58
             |                                 
            
                190
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2016
             | 
            
                0.00 / 0.00%
             |             
            
                16.50
             |           
            
                16.60
             |               
            
                16.20
             |                           
            
                16.60
             | 
            
                16.24
             |                     
            
                7.49
             |                                 
            
                1,170
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2016
             | 
            
                +0.20 / +1.22%
             |             
            
                16.00
             |           
            
                16.60
             |               
            
                15.50
             |                           
            
                16.60
             | 
            
                15.67
             |                     
            
                7.49
             |                                 
            
                11,550
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2016
             | 
            
                +0.30 / +1.86%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                16.40
             |                           
            
                16.40
             | 
            
                16.40
             |                     
            
                7.40
             |                                 
            
                110
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2016
             | 
            
                -1.20 / -6.94%
             |             
            
                17.00
             |           
            
                17.00
             |               
            
                16.10
             |                           
            
                16.10
             | 
            
                16.19
             |                     
            
                7.26
             |                                 
            
                8,460
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2016
             | 
            
                +0.40 / +2.37%
             |             
            
                17.40
             |           
            
                17.60
             |               
            
                17.30
             |                           
            
                17.30
             | 
            
                17.43
             |                     
            
                7.80
             |                                 
            
                686,140
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2016
             | 
            
                +1.10 / +6.96%
             |             
            
                16.90
             |           
            
                16.90
             |               
            
                16.50
             |                           
            
                16.90
             | 
            
                16.90
             |                     
            
                7.62
             |                                 
            
                7,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2016
             | 
            
                -0.20 / -1.25%
             |             
            
                16.00
             |           
            
                17.00
             |               
            
                15.80
             |                           
            
                15.80
             | 
            
                16.04
             |                     
            
                7.13
             |                                 
            
                6,670
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2016
             | 
            
                -1.20 / -6.98%
             |             
            
                16.70
             |           
            
                17.30
             |               
            
                16.00
             |                           
            
                16.00
             | 
            
                16.17
             |                     
            
                7.22
             |                                 
            
                8,780
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2016
             | 
            
                +0.60 / +3.61%
             |             
            
                17.00
             |           
            
                17.60
             |               
            
                17.00
             |                           
            
                17.20
             | 
            
                17.20
             |                     
            
                7.76
             |                                 
            
                100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2016
             | 
            
                -0.60 / -3.49%
             |             
            
                16.60
             |           
            
                16.60
             |               
            
                16.60
             |                           
            
                16.60
             | 
            
                16.60
             |                     
            
                7.49
             |                                 
            
                10
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/24/2016
             | 
            
                +0.20 / +1.18%
             |             
            
                17.10
             |           
            
                17.20
             |               
            
                17.00
             |                           
            
                17.20
             | 
            
                17.13
             |                     
            
                7.76
             |                                 
            
                230
             |            
            
                 
             |                                       
         
    
        
            | 
                3/23/2016
             | 
            
                +0.40 / +2.41%
             |             
            
                16.90
             |           
            
                17.00
             |               
            
                16.60
             |                           
            
                17.00
             | 
            
                16.67
             |                     
            
                7.67
             |                                 
            
                600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2016
             | 
            
                -1.00 / -5.68%
             |             
            
                17.50
             |           
            
                17.80
             |               
            
                16.40
             |                           
            
                16.60
             | 
            
                16.45
             |                     
            
                7.49
             |                                 
            
                3,040
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2016
             | 
            
                -0.40 / -2.22%
             |             
            
                18.00
             |           
            
                18.20
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.85
             |                     
            
                7.94
             |                                 
            
                1,710
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2016
             | 
            
                -0.10 / -0.55%
             |             
            
                17.50
             |           
            
                18.20
             |               
            
                17.50
             |                           
            
                18.00
             | 
            
                18.03
             |                     
            
                8.12
             |                                 
            
                5,270
             |            
            
                 
             |                                       
         
    
        
            | 
                3/17/2016
             | 
            
                -0.70 / -3.72%
             |             
            
                19.40
             |           
            
                19.40
             |               
            
                17.50
             |                           
            
                18.10
             | 
            
                17.88
             |                     
            
                8.16
             |                                 
            
                1,790
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2016
             | 
            
                +1.20 / +6.82%
             |             
            
                18.80
             |           
            
                18.80
             |               
            
                18.40
             |                           
            
                18.80
             | 
            
                18.76
             |                     
            
                8.48
             |                                 
            
                12,050
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2016
             | 
            
                +1.10 / +6.67%
             |             
            
                17.60
             |           
            
                17.60
             |               
            
                17.60
             |                           
            
                17.60
             | 
            
                17.60
             |                     
            
                7.94
             |                                 
            
                20,450
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2016
             | 
            
                +1.00 / +6.45%
             |             
            
                16.50
             |           
            
                16.50
             |               
            
                16.50
             |                           
            
                16.50
             | 
            
                16.50
             |                     
            
                7.44
             |                                 
            
                30,010
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2016
             | 
            
                +0.50 / +3.33%
             |             
            
                15.40
             |           
            
                15.50
             |               
            
                15.40
             |                           
            
                15.50
             | 
            
                15.45
             |                     
            
                6.99
             |                                 
            
                580
             |  
            
                 
             |                                                              
             
    
         
    
    
 |