| 
                 
                    Closing price on 5/27/2010
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    33.80 | 
                 
                
                    | High | 
                    35.70 | 
                 
                
                    | Low | 
                    33.00 | 
                     
                
                    | Volume | 
                    160,900 | 
                                 
                
                    | Split-adjusted Price | 
                    7.00 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/27/2010
             | 
            
                +1.50 / +4.41%
             |             
            
                33.80
             |           
            
                35.70
             |               
            
                33.00
             |                           
            
                35.50
             | 
            
                35.01
             |                     
            
                7.00
             |                                 
            
                160,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/26/2010
             | 
            
                +2.30 / +7.26%
             |             
            
                32.00
             |           
            
                34.00
             |               
            
                32.00
             |                           
            
                34.00
             | 
            
                33.41
             |                     
            
                6.70
             |                                 
            
                101,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/25/2010
             | 
            
                -1.00 / -3.06%
             |             
            
                31.70
             |           
            
                32.20
             |               
            
                31.30
             |                           
            
                31.70
             | 
            
                31.84
             |                     
            
                6.25
             |                                 
            
                99,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/24/2010
             | 
            
                +0.70 / +2.19%
             |             
            
                30.00
             |           
            
                33.00
             |               
            
                30.00
             |                           
            
                32.70
             | 
            
                31.73
             |                     
            
                6.45
             |                                 
            
                66,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/21/2010
             | 
            
                -3.30 / -9.35%
             |             
            
                34.40
             |           
            
                34.40
             |               
            
                32.00
             |                           
            
                32.00
             | 
            
                32.08
             |                     
            
                6.31
             |                                 
            
                221,800
             |            
            
                 
             |                                       
         
    
        
            | 
                5/20/2010
             | 
            
                -0.70 / -1.94%
             |             
            
                34.00
             |           
            
                36.40
             |               
            
                33.60
             |                           
            
                35.30
             | 
            
                34.41
             |                     
            
                6.96
             |                                 
            
                95,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/19/2010
             | 
            
                -2.00 / -5.26%
             |             
            
                38.70
             |           
            
                38.70
             |               
            
                36.00
             |                           
            
                36.00
             | 
            
                36.06
             |                     
            
                7.10
             |                                 
            
                143,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/18/2010
             | 
            
                -13.50 / -26.21%
             |             
            
                36.30
             |           
            
                39.90
             |               
            
                36.30
             |                           
            
                38.00
             | 
            
                38.72
             |                     
            
                7.49
             |                                 
            
                174,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/17/2010
             | 
            
                -1.90 / -3.56%
             |             
            
                55.00
             |           
            
                55.90
             |               
            
                51.50
             |                           
            
                51.50
             | 
            
                53.04
             |                     
            
                7.14
             |                                 
            
                256,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/14/2010
             | 
            
                +2.40 / +4.71%
             |             
            
                52.00
             |           
            
                53.40
             |               
            
                51.00
             |                           
            
                53.40
             | 
            
                52.35
             |                     
            
                7.41
             |                                 
            
                131,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/13/2010
             | 
            
                +1.00 / +2.00%
             |             
            
                50.60
             |           
            
                53.50
             |               
            
                50.50
             |                           
            
                51.00
             | 
            
                51.51
             |                     
            
                7.07
             |                                 
            
                117,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/12/2010
             | 
            
                -2.70 / -5.12%
             |             
            
                53.00
             |           
            
                53.70
             |               
            
                50.00
             |                           
            
                50.00
             | 
            
                50.56
             |                     
            
                6.94
             |                                 
            
                156,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/11/2010
             | 
            
                -0.10 / -0.19%
             |             
            
                53.50
             |           
            
                55.90
             |               
            
                52.70
             |                           
            
                52.70
             | 
            
                53.71
             |                     
            
                7.31
             |                                 
            
                171,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/10/2010
             | 
            
                -2.00 / -3.65%
             |             
            
                56.70
             |           
            
                56.70
             |               
            
                52.00
             |                           
            
                52.80
             | 
            
                52.89
             |                     
            
                7.32
             |                                 
            
                142,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2010
             | 
            
                -3.20 / -5.52%
             |             
            
                56.00
             |           
            
                58.00
             |               
            
                54.50
             |                           
            
                54.80
             | 
            
                55.09
             |                     
            
                7.60
             |                                 
            
                276,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/6/2010
             | 
            
                -1.00 / -1.69%
             |             
            
                60.00
             |           
            
                60.00
             |               
            
                57.70
             |                           
            
                58.00
             | 
            
                58.50
             |                     
            
                8.05
             |                                 
            
                178,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/5/2010
             | 
            
                +3.30 / +5.92%
             |             
            
                58.00
             |           
            
                60.00
             |               
            
                56.00
             |                           
            
                59.00
             | 
            
                57.69
             |                     
            
                8.18
             |                                 
            
                268,000
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2010
             | 
            
                +0.50 / +0.91%
             |             
            
                56.00
             |           
            
                58.00
             |               
            
                55.70
             |                           
            
                55.70
             | 
            
                56.63
             |                     
            
                7.73
             |                                 
            
                154,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/29/2010
             | 
            
                -1.30 / -2.30%
             |             
            
                57.00
             |           
            
                57.80
             |               
            
                55.20
             |                           
            
                55.20
             | 
            
                56.60
             |                     
            
                7.66
             |                                 
            
                139,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/28/2010
             | 
            
                -0.50 / -0.88%
             |             
            
                56.00
             |           
            
                57.20
             |               
            
                56.00
             |                           
            
                56.50
             | 
            
                56.58
             |                     
            
                7.84
             |                                 
            
                170,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2010
             | 
            
                +1.90 / +3.45%
             |             
            
                57.50
             |           
            
                59.30
             |               
            
                55.60
             |                           
            
                57.00
             | 
            
                57.33
             |                     
            
                7.91
             |                                 
            
                157,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2010
             | 
            
                -1.50 / -2.65%
             |             
            
                57.00
             |           
            
                57.20
             |               
            
                54.30
             |                           
            
                55.10
             | 
            
                55.50
             |                     
            
                7.64
             |                                 
            
                135,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/22/2010
             | 
            
                -5.40 / -8.71%
             |             
            
                62.00
             |           
            
                63.00
             |               
            
                56.00
             |                           
            
                56.60
             | 
            
                58.06
             |                     
            
                7.85
             |                                 
            
                204,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/21/2010
             | 
            
                +4.20 / +7.27%
             |             
            
                60.00
             |           
            
                62.50
             |               
            
                57.00
             |                           
            
                62.00
             | 
            
                60.16
             |                     
            
                8.60
             |                                 
            
                358,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2010
             | 
            
                +0.80 / +1.40%
             |             
            
                57.90
             |           
            
                60.50
             |               
            
                57.00
             |                           
            
                57.80
             | 
            
                58.49
             |                     
            
                8.02
             |                                 
            
                203,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2010
             | 
            
                -3.70 / -6.10%
             |             
            
                60.90
             |           
            
                60.90
             |               
            
                56.70
             |                           
            
                57.00
             | 
            
                57.61
             |                     
            
                7.91
             |                                 
            
                437,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2010
             | 
            
                +1.60 / +2.71%
             |             
            
                62.00
             |           
            
                62.50
             |               
            
                59.10
             |                           
            
                60.70
             | 
            
                60.90
             |                     
            
                8.42
             |                                 
            
                281,000
             |            
            
                 
             |                                       
         
    
        
            | 
                4/15/2010
             | 
            
                +2.10 / +3.68%
             |             
            
                57.50
             |           
            
                59.10
             |               
            
                57.50
             |                           
            
                59.10
             | 
            
                59.08
             |                     
            
                8.20
             |                                 
            
                196,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/14/2010
             | 
            
                +3.00 / +5.56%
             |             
            
                54.00
             |           
            
                57.00
             |               
            
                53.90
             |                           
            
                57.00
             | 
            
                55.31
             |                     
            
                7.91
             |                                 
            
                364,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2010
             | 
            
                +0.50 / +0.93%
             |             
            
                54.00
             |           
            
                55.80
             |               
            
                50.30
             |                           
            
                54.00
             | 
            
                53.94
             |                     
            
                7.49
             |                                 
            
                161,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |