| 
                 
                    Closing price on 11/28/2007
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    81.50 | 
                 
                
                    | High | 
                    81.50 | 
                 
                
                    | Low | 
                    78.50 | 
                     
                
                    | Volume | 
                    21,800 | 
                                 
                
                    | Split-adjusted Price | 
                    9.78 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/28/2007
             | 
            
                +1.50 / +1.90%
             |             
            
                81.50
             |           
            
                81.50
             |               
            
                78.50
             |                           
            
                80.50
             | 
            
                79.62
             |                     
            
                9.78
             |                                 
            
                21,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/27/2007
             | 
            
                +1.00 / +1.28%
             |             
            
                79.00
             |           
            
                82.00
             |               
            
                78.00
             |                           
            
                79.00
             | 
            
                79.57
             |                     
            
                9.60
             |                                 
            
                28,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/26/2007
             | 
            
                +2.80 / +3.72%
             |             
            
                78.00
             |           
            
                78.00
             |               
            
                76.20
             |                           
            
                78.00
             | 
            
                77.34
             |                     
            
                9.48
             |                                 
            
                23,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/23/2007
             | 
            
                -0.30 / -0.40%
             |             
            
                77.50
             |           
            
                78.00
             |               
            
                74.50
             |                           
            
                75.20
             | 
            
                75.61
             |                     
            
                9.14
             |                                 
            
                17,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/22/2007
             | 
            
                +0.50 / +0.67%
             |             
            
                71.60
             |           
            
                78.80
             |               
            
                71.60
             |                           
            
                75.50
             | 
            
                76.47
             |                     
            
                9.18
             |                                 
            
                48,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/21/2007
             | 
            
                0.00 / 0.00%
             |             
            
                75.00
             |           
            
                76.00
             |               
            
                71.00
             |                           
            
                75.00
             | 
            
                74.76
             |                     
            
                9.12
             |                                 
            
                28,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/20/2007
             | 
            
                -1.10 / -1.45%
             |             
            
                74.80
             |           
            
                77.00
             |               
            
                74.80
             |                           
            
                75.00
             | 
            
                75.47
             |                     
            
                9.12
             |                                 
            
                23,900
             |            
            
                 
             |                                       
         
    
        
            | 
                11/19/2007
             | 
            
                +3.90 / +5.40%
             |             
            
                73.00
             |           
            
                78.00
             |               
            
                73.00
             |                           
            
                76.10
             | 
            
                74.82
             |                     
            
                9.25
             |                                 
            
                17,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/16/2007
             | 
            
                -3.10 / -4.12%
             |             
            
                73.00
             |           
            
                73.00
             |               
            
                69.00
             |                           
            
                72.20
             | 
            
                71.38
             |                     
            
                8.78
             |                                 
            
                36,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/15/2007
             | 
            
                -5.60 / -6.92%
             |             
            
                84.00
             |           
            
                84.00
             |               
            
                73.10
             |                           
            
                75.30
             | 
            
                76.16
             |                     
            
                9.15
             |                                 
            
                11,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/14/2007
             | 
            
                +7.80 / +10.67%
             |             
            
                70.00
             |           
            
                80.90
             |               
            
                70.00
             |                           
            
                80.90
             | 
            
                80.11
             |                     
            
                9.83
             |                                 
            
                82,000
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2007
             | 
            
                -5.90 / -7.47%
             |             
            
                75.00
             |           
            
                75.00
             |               
            
                73.10
             |                           
            
                73.10
             | 
            
                73.59
             |                     
            
                8.89
             |                                 
            
                16,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/12/2007
             | 
            
                -6.00 / -7.06%
             |             
            
                83.00
             |           
            
                83.00
             |               
            
                79.00
             |                           
            
                79.00
             | 
            
                81.16
             |                     
            
                9.60
             |                                 
            
                38,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2007
             | 
            
                -2.00 / -2.30%
             |             
            
                86.80
             |           
            
                86.80
             |               
            
                81.00
             |                           
            
                85.00
             | 
            
                85.00
             |                     
            
                10.33
             |                                 
            
                35,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2007
             | 
            
                -0.90 / -1.02%
             |             
            
                88.70
             |           
            
                90.00
             |               
            
                87.00
             |                           
            
                87.00
             | 
            
                87.00
             |                     
            
                10.57
             |                                 
            
                39,800
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2007
             | 
            
                +0.90 / +1.03%
             |             
            
                87.30
             |           
            
                92.00
             |               
            
                84.50
             |                           
            
                87.90
             | 
            
                87.90
             |                     
            
                10.68
             |                                 
            
                64,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2007
             | 
            
                +3.80 / +4.57%
             |             
            
                80.90
             |           
            
                87.00
             |               
            
                80.00
             |                           
            
                87.00
             | 
            
                87.00
             |                     
            
                10.57
             |                                 
            
                51,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/5/2007
             | 
            
                -7.30 / -8.07%
             |             
            
                90.00
             |           
            
                90.00
             |               
            
                83.20
             |                           
            
                83.20
             | 
            
                83.20
             |                     
            
                10.11
             |                                 
            
                50,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2007
             | 
            
                -4.50 / -4.74%
             |             
            
                98.00
             |           
            
                98.00
             |               
            
                88.00
             |                           
            
                90.50
             | 
            
                90.50
             |                     
            
                11.00
             |                                 
            
                41,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2007
             | 
            
                +7.90 / +9.07%
             |             
            
                86.00
             |           
            
                96.50
             |               
            
                83.10
             |                           
            
                95.00
             | 
            
                95.00
             |                     
            
                11.55
             |                                 
            
                148,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2007
             | 
            
                -9.40 / -9.74%
             |             
            
                89.00
             |           
            
                91.00
             |               
            
                86.40
             |                           
            
                87.10
             | 
            
                87.10
             |                     
            
                10.59
             |                                 
            
                52,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2007
             | 
            
                +1.60 / +1.69%
             |             
            
                102.90
             |           
            
                102.90
             |               
            
                91.00
             |                           
            
                96.50
             | 
            
                96.50
             |                     
            
                11.73
             |                                 
            
                62,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/29/2007
             | 
            
                +7.90 / +9.08%
             |             
            
                94.80
             |           
            
                94.90
             |               
            
                86.00
             |                           
            
                94.90
             | 
            
                94.90
             |                     
            
                11.54
             |                                 
            
                173,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2007
             | 
            
                +7.60 / +9.57%
             |             
            
                87.30
             |           
            
                87.30
             |               
            
                72.50
             |                           
            
                87.00
             | 
            
                87.00
             |                     
            
                10.57
             |                                 
            
                293,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/25/2007
             | 
            
                +7.20 / +9.97%
             |             
            
                79.40
             |           
            
                79.40
             |               
            
                79.40
             |                           
            
                79.40
             | 
            
                79.40
             |                     
            
                9.65
             |                                 
            
                14,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/24/2007
             | 
            
                +6.50 / +9.89%
             |             
            
                72.20
             |           
            
                72.20
             |               
            
                72.20
             |                           
            
                72.20
             | 
            
                72.20
             |                     
            
                8.78
             |                                 
            
                16,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/23/2007
             | 
            
                +5.90 / +9.87%
             |             
            
                65.70
             |           
            
                65.70
             |               
            
                65.70
             |                           
            
                65.70
             | 
            
                65.70
             |                     
            
                7.99
             |                                 
            
                41,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/22/2007
             | 
            
                +3.90 / +6.98%
             |             
            
                59.80
             |           
            
                59.80
             |               
            
                59.80
             |                           
            
                59.80
             | 
            
                59.80
             |                     
            
                7.27
             |                                 
            
                53,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2007
             | 
            
                +3.90 / +7.50%
             |             
            
                51.00
             |           
            
                55.90
             |               
            
                50.00
             |                           
            
                55.90
             | 
            
                55.90
             |                     
            
                6.79
             |                                 
            
                63,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/18/2007
             | 
            
                -1.00 / -1.89%
             |             
            
                54.90
             |           
            
                54.90
             |               
            
                49.50
             |                           
            
                52.00
             | 
            
                52.00
             |                     
            
                6.32
             |                                 
            
                129,600
             |  
            
                 
             |                                                              
             
    
         
    
    
 |