| 
                 
                    Closing price on 12/14/2007
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    97.29 | 
                 
                
                    | High | 
                    100.20 | 
                 
                
                    | Low | 
                    95.00 | 
                     
                
                    | Volume | 
                    70,900 | 
                                 
                
                    | Split-adjusted Price | 
                    11.81 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                12/14/2007
             | 
            
                -1.80 / -1.82%
             |             
            
                97.29
             |           
            
                100.20
             |               
            
                95.00
             |                           
            
                97.20
             | 
            
                97.01
             |                     
            
                11.81
             |                                 
            
                70,900
             |            
            
                 
             |                                       
         
    
        
            | 
                12/13/2007
             | 
            
                -3.50 / -3.41%
             |             
            
                104.00
             |           
            
                105.00
             |               
            
                98.10
             |                           
            
                99.00
             | 
            
                100.25
             |                     
            
                12.03
             |                                 
            
                65,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/12/2007
             | 
            
                -0.50 / -0.49%
             |             
            
                102.40
             |           
            
                107.50
             |               
            
                100.00
             |                           
            
                102.50
             | 
            
                103.07
             |                     
            
                12.46
             |                                 
            
                96,000
             |            
            
                 
             |                                       
         
    
        
            | 
                12/11/2007
             | 
            
                -3.00 / -2.83%
             |             
            
                107.00
             |           
            
                107.50
             |               
            
                100.00
             |                           
            
                103.00
             | 
            
                102.37
             |                     
            
                12.52
             |                                 
            
                72,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/10/2007
             | 
            
                +5.80 / +5.79%
             |             
            
                102.00
             |           
            
                108.70
             |               
            
                102.00
             |                           
            
                106.00
             | 
            
                104.72
             |                     
            
                12.88
             |                                 
            
                104,400
             |            
            
                 
             |                                       
         
    
        
            | 
                12/7/2007
             | 
            
                +2.70 / +2.77%
             |             
            
                97.00
             |           
            
                102.00
             |               
            
                96.00
             |                           
            
                100.20
             | 
            
                98.92
             |                     
            
                12.18
             |                                 
            
                79,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/6/2007
             | 
            
                +0.60 / +0.62%
             |             
            
                95.00
             |           
            
                98.80
             |               
            
                95.00
             |                           
            
                97.50
             | 
            
                96.64
             |                     
            
                11.85
             |                                 
            
                57,100
             |            
            
                 
             |                                       
         
    
        
            | 
                12/5/2007
             | 
            
                -1.10 / -1.12%
             |             
            
                100.50
             |           
            
                100.50
             |               
            
                90.80
             |                           
            
                96.90
             | 
            
                94.33
             |                     
            
                11.78
             |                                 
            
                73,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                12/4/2007
             | 
            
                +4.70 / +5.04%
             |             
            
                94.50
             |           
            
                100.00
             |               
            
                94.50
             |                           
            
                98.00
             | 
            
                98.55
             |                     
            
                11.91
             |                                 
            
                106,700
             |            
            
                 
             |                                       
         
    
        
            | 
                12/3/2007
             | 
            
                +7.70 / +9.00%
             |             
            
                90.00
             |           
            
                93.30
             |               
            
                89.00
             |                           
            
                93.30
             | 
            
                92.15
             |                     
            
                11.34
             |                                 
            
                97,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/30/2007
             | 
            
                +0.60 / +0.71%
             |             
            
                84.90
             |           
            
                86.00
             |               
            
                84.00
             |                           
            
                85.60
             | 
            
                84.87
             |                     
            
                10.40
             |                                 
            
                52,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/29/2007
             | 
            
                +4.50 / +5.59%
             |             
            
                82.00
             |           
            
                86.00
             |               
            
                80.50
             |                           
            
                85.00
             | 
            
                83.24
             |                     
            
                10.33
             |                                 
            
                61,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                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
             |  
            
                 
             |                                                              
             
    
         
    
    
 |