| 
                 
                    Closing price on 7/7/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    32.00 | 
                 
                
                    | High | 
                    32.00 | 
                 
                
                    | Low | 
                    29.00 | 
                     
                
                    | Volume | 
                    34,520 | 
                                 
                
                    | Split-adjusted Price | 
                    13.22 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STG Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/7/2016
             | 
            
                -1.10 / -3.62%
             |             
            
                32.00
             |           
            
                32.00
             |               
            
                29.00
             |                           
            
                29.30
             | 
            
                29.90
             |                     
            
                13.22
             |                                 
            
                34,520
             |            
            
                 
             |                                       
         
    
        
            | 
                7/6/2016
             | 
            
                0.00 / 0.00%
             |             
            
                28.60
             |           
            
                30.40
             |               
            
                28.40
             |                           
            
                30.40
             | 
            
                29.37
             |                     
            
                13.71
             |                                 
            
                86,920
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/5/2016
             | 
            
                +1.90 / +6.67%
             |             
            
                30.40
             |           
            
                30.40
             |               
            
                30.30
             |                           
            
                30.40
             | 
            
                30.40
             |                     
            
                13.71
             |                                 
            
                89,520
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2016
             | 
            
                +1.80 / +6.74%
             |             
            
                28.50
             |           
            
                28.50
             |               
            
                28.50
             |                           
            
                28.50
             | 
            
                28.50
             |                     
            
                12.85
             |                                 
            
                11,950
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/1/2016
             | 
            
                +1.70 / +6.80%
             |             
            
                26.70
             |           
            
                26.70
             |               
            
                26.70
             |                           
            
                26.70
             | 
            
                26.70
             |                     
            
                12.04
             |                                 
            
                618,040
             |            
            
                 
             |                                       
         
    
        
            | 
                6/30/2016
             | 
            
                +1.60 / +6.84%
             |             
            
                24.60
             |           
            
                25.00
             |               
            
                24.60
             |                           
            
                25.00
             | 
            
                24.99
             |                     
            
                11.28
             |                                 
            
                437,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/29/2016
             | 
            
                +1.50 / +6.85%
             |             
            
                22.90
             |           
            
                23.40
             |               
            
                22.90
             |                           
            
                23.40
             | 
            
                23.29
             |                     
            
                10.55
             |                                 
            
                1,487,880
             |            
            
                 
             |                                       
         
    
        
            | 
                6/28/2016
             | 
            
                +1.40 / +6.83%
             |             
            
                20.50
             |           
            
                21.90
             |               
            
                19.70
             |                           
            
                21.90
             | 
            
                21.48
             |                     
            
                9.88
             |                                 
            
                2,467,180
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/27/2016
             | 
            
                -0.60 / -2.84%
             |             
            
                22.50
             |           
            
                22.50
             |               
            
                20.50
             |                           
            
                20.50
             | 
            
                21.93
             |                     
            
                9.25
             |                                 
            
                301,160
             |            
            
                 
             |                                       
         
    
        
            | 
                6/24/2016
             | 
            
                +1.30 / +6.57%
             |             
            
                19.40
             |           
            
                21.10
             |               
            
                19.10
             |                           
            
                21.10
             | 
            
                20.39
             |                     
            
                9.52
             |                                 
            
                259,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/23/2016
             | 
            
                +0.90 / +4.76%
             |             
            
                18.30
             |           
            
                20.20
             |               
            
                18.30
             |                           
            
                19.80
             | 
            
                19.36
             |                     
            
                8.93
             |                                 
            
                81,770
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2016
             | 
            
                +1.20 / +6.78%
             |             
            
                18.00
             |           
            
                18.90
             |               
            
                18.00
             |                           
            
                18.90
             | 
            
                18.88
             |                     
            
                8.52
             |                                 
            
                270,610
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2016
             | 
            
                +0.20 / +1.14%
             |             
            
                17.60
             |           
            
                17.80
             |               
            
                16.70
             |                           
            
                17.70
             | 
            
                16.99
             |                     
            
                7.98
             |                                 
            
                483,920
             |            
            
                 
             |                                       
         
    
        
            | 
                6/20/2016
             | 
            
                +0.10 / +0.57%
             |             
            
                17.30
             |           
            
                17.60
             |               
            
                17.00
             |                           
            
                17.50
             | 
            
                17.03
             |                     
            
                7.89
             |                                 
            
                461,350
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/17/2016
             | 
            
                +0.40 / +2.35%
             |             
            
                17.40
             |           
            
                17.50
             |               
            
                16.80
             |                           
            
                17.40
             | 
            
                16.87
             |                     
            
                7.85
             |                                 
            
                713,580
             |            
            
                 
             |                                       
         
    
        
            | 
                6/16/2016
             | 
            
                -0.90 / -5.03%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                16.70
             |                           
            
                17.00
             | 
            
                16.87
             |                     
            
                7.67
             |                                 
            
                1,173,040
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2016
             | 
            
                +0.20 / +1.13%
             |             
            
                17.60
             |           
            
                18.10
             |               
            
                17.10
             |                           
            
                17.90
             | 
            
                17.75
             |                     
            
                8.07
             |                                 
            
                59,830
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2016
             | 
            
                -0.10 / -0.56%
             |             
            
                17.00
             |           
            
                17.70
             |               
            
                17.00
             |                           
            
                17.70
             | 
            
                17.39
             |                     
            
                7.98
             |                                 
            
                25,590
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/13/2016
             | 
            
                +0.40 / +2.30%
             |             
            
                18.30
             |           
            
                18.30
             |               
            
                17.40
             |                           
            
                17.80
             | 
            
                17.71
             |                     
            
                8.03
             |                                 
            
                37,950
             |            
            
                 
             |                                       
         
    
        
            | 
                6/10/2016
             | 
            
                +1.10 / +6.75%
             |             
            
                16.00
             |           
            
                17.40
             |               
            
                16.00
             |                           
            
                17.40
             | 
            
                16.93
             |                     
            
                7.85
             |                                 
            
                148,630
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/9/2016
             | 
            
                +0.70 / +4.49%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                15.80
             |                           
            
                16.30
             | 
            
                16.13
             |                     
            
                7.35
             |                                 
            
                34,090
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2016
             | 
            
                +1.00 / +6.85%
             |             
            
                15.00
             |           
            
                15.60
             |               
            
                14.50
             |                           
            
                15.60
             | 
            
                15.34
             |                     
            
                7.04
             |                                 
            
                383,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2016
             | 
            
                -0.10 / -0.68%
             |             
            
                14.70
             |           
            
                14.70
             |               
            
                14.60
             |                           
            
                14.60
             | 
            
                14.65
             |                     
            
                6.58
             |                                 
            
                2,360
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2016
             | 
            
                -0.10 / -0.68%
             |             
            
                13.80
             |           
            
                14.70
             |               
            
                13.80
             |                           
            
                14.70
             | 
            
                13.89
             |                     
            
                6.63
             |                                 
            
                5,110
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/3/2016
             | 
            
                0.00 / 0.00%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                6.68
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                6/2/2016
             | 
            
                0.00 / 0.00%
             |             
            
                13.80
             |           
            
                14.80
             |               
            
                13.80
             |                           
            
                14.80
             | 
            
                13.85
             |                     
            
                6.68
             |                                 
            
                3,610
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2016
             | 
            
                0.00 / 0.00%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                6.68
             |                                 
            
                393,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2016
             | 
            
                0.00 / 0.00%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                6.68
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2016
             | 
            
                0.00 / 0.00%
             |             
            
                14.80
             |           
            
                14.80
             |               
            
                14.80
             |                           
            
                14.80
             | 
            
                14.80
             |                     
            
                6.68
             |                                 
            
                20
             |            
            
                 
             |                                       
         
    
        
            | 
                5/27/2016
             | 
            
                0.00 / 0.00%
             |             
            
                14.50
             |           
            
                14.80
             |               
            
                14.50
             |                           
            
                14.80
             | 
            
                14.65
             |                     
            
                6.68
             |                                 
            
                1,120
             |  
            
                 
             |                                                              
             
    
         
    
    
 |