| 
                 
                    Closing price on 7/9/2007
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    36.50 | 
                 
                
                    | High | 
                    37.00 | 
                 
                
                    | Low | 
                    36.50 | 
                     
                
                    | Volume | 
                    800 | 
                                 
                
                    | Split-adjusted Price | 
                    2.97 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
STP Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                7/9/2007
             | 
            
                -0.50 / -1.35%
             |             
            
                36.50
             |           
            
                37.00
             |               
            
                36.50
             |                           
            
                36.50
             | 
            
                36.50
             |                     
            
                2.97
             |                                 
            
                800
             |            
            
                 
             |                                       
         
    
        
            | 
                7/6/2007
             | 
            
                +1.80 / +5.11%
             |             
            
                36.00
             |           
            
                37.00
             |               
            
                36.00
             |                           
            
                37.00
             | 
            
                37.00
             |                     
            
                3.01
             |                                 
            
                1,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/5/2007
             | 
            
                -2.30 / -6.13%
             |             
            
                35.60
             |           
            
                37.50
             |               
            
                35.00
             |                           
            
                35.20
             | 
            
                35.20
             |                     
            
                2.86
             |                                 
            
                10,500
             |            
            
                 
             |                                       
         
    
        
            | 
                7/4/2007
             | 
            
                +3.00 / +8.70%
             |             
            
                36.00
             |           
            
                37.50
             |               
            
                36.00
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                3.05
             |                                 
            
                12,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                7/3/2007
             | 
            
                -3.00 / -8.00%
             |             
            
                34.10
             |           
            
                34.80
             |               
            
                34.00
             |                           
            
                34.50
             | 
            
                34.50
             |                     
            
                2.81
             |                                 
            
                6,000
             |            
            
                 
             |                                       
         
    
        
            | 
                7/2/2007
             | 
            
                -0.50 / -1.32%
             |             
            
                37.00
             |           
            
                38.00
             |               
            
                36.00
             |                           
            
                37.50
             | 
            
                37.50
             |                     
            
                3.05
             |                                 
            
                4,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/29/2007
             | 
            
                -0.50 / -1.30%
             |             
            
                38.80
             |           
            
                39.00
             |               
            
                38.00
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                3.09
             |                                 
            
                1,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/28/2007
             | 
            
                0.00 / 0.00%
             |             
            
                38.50
             |           
            
                39.00
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                3.13
             |                                 
            
                9,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/27/2007
             | 
            
                -1.30 / -3.27%
             |             
            
                38.50
             |           
            
                38.50
             |               
            
                38.50
             |                           
            
                38.50
             | 
            
                38.50
             |                     
            
                3.13
             |                                 
            
                2,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/26/2007
             | 
            
                +1.20 / +3.11%
             |             
            
                38.60
             |           
            
                40.00
             |               
            
                38.00
             |                           
            
                39.80
             | 
            
                39.80
             |                     
            
                3.24
             |                                 
            
                3,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/25/2007
             | 
            
                -0.90 / -2.28%
             |             
            
                38.60
             |           
            
                39.00
             |               
            
                37.80
             |                           
            
                38.60
             | 
            
                38.60
             |                     
            
                3.14
             |                                 
            
                4,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/22/2007
             | 
            
                -0.50 / -1.25%
             |             
            
                39.80
             |           
            
                40.00
             |               
            
                39.50
             |                           
            
                39.50
             | 
            
                39.50
             |                     
            
                3.21
             |                                 
            
                7,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/21/2007
             | 
            
                0.00 / 0.00%
             |             
            
                40.80
             |           
            
                41.10
             |               
            
                40.00
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                3.25
             |                                 
            
                6,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/20/2007
             | 
            
                -1.50 / -3.61%
             |             
            
                40.00
             |           
            
                42.00
             |               
            
                40.00
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                3.25
             |                                 
            
                20,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/19/2007
             | 
            
                +0.60 / +1.47%
             |             
            
                39.90
             |           
            
                42.00
             |               
            
                39.90
             |                           
            
                41.50
             | 
            
                41.50
             |                     
            
                3.31
             |                                 
            
                7,900
             |            
            
                 
             |                                       
         
    
        
            | 
                6/18/2007
             | 
            
                +1.40 / +3.54%
             |             
            
                39.60
             |           
            
                40.90
             |               
            
                39.50
             |                           
            
                40.90
             | 
            
                40.90
             |                     
            
                3.26
             |                                 
            
                32,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/15/2007
             | 
            
                -0.10 / -0.25%
             |             
            
                39.60
             |           
            
                40.00
             |               
            
                39.10
             |                           
            
                39.50
             | 
            
                39.50
             |                     
            
                3.15
             |                                 
            
                17,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/14/2007
             | 
            
                -1.40 / -3.41%
             |             
            
                39.90
             |           
            
                41.10
             |               
            
                38.90
             |                           
            
                39.60
             | 
            
                39.60
             |                     
            
                3.16
             |                                 
            
                7,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/13/2007
             | 
            
                +1.00 / +2.50%
             |             
            
                40.00
             |           
            
                41.00
             |               
            
                40.00
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                3.27
             |                                 
            
                6,100
             |            
            
                 
             |                                       
         
    
        
            | 
                6/12/2007
             | 
            
                0.00 / 0.00%
             |             
            
                39.90
             |           
            
                40.00
             |               
            
                39.60
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                3.19
             |                                 
            
                8,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/11/2007
             | 
            
                -1.00 / -2.44%
             |             
            
                40.00
             |           
            
                40.00
             |               
            
                40.00
             |                           
            
                40.00
             | 
            
                40.00
             |                     
            
                3.19
             |                                 
            
                3,300
             |            
            
                 
             |                                       
         
    
        
            | 
                6/8/2007
             | 
            
                -1.10 / -2.61%
             |             
            
                41.30
             |           
            
                42.50
             |               
            
                40.50
             |                           
            
                41.00
             | 
            
                41.00
             |                     
            
                3.27
             |                                 
            
                5,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/7/2007
             | 
            
                +0.10 / +0.24%
             |             
            
                41.50
             |           
            
                42.80
             |               
            
                41.50
             |                           
            
                42.10
             | 
            
                42.10
             |                     
            
                3.36
             |                                 
            
                8,000
             |            
            
                 
             |                                       
         
    
        
            | 
                6/6/2007
             | 
            
                +0.10 / +0.24%
             |             
            
                41.40
             |           
            
                42.00
             |               
            
                41.00
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                3.35
             |                                 
            
                13,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/5/2007
             | 
            
                -0.10 / -0.24%
             |             
            
                41.40
             |           
            
                42.10
             |               
            
                40.00
             |                           
            
                41.90
             | 
            
                41.90
             |                     
            
                3.34
             |                                 
            
                13,700
             |            
            
                 
             |                                       
         
    
        
            | 
                6/4/2007
             | 
            
                +0.80 / +1.94%
             |             
            
                41.00
             |           
            
                42.90
             |               
            
                40.90
             |                           
            
                42.00
             | 
            
                42.00
             |                     
            
                3.35
             |                                 
            
                25,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                6/1/2007
             | 
            
                +3.90 / +10.46%
             |             
            
                38.50
             |           
            
                41.50
             |               
            
                38.50
             |                           
            
                41.20
             | 
            
                41.20
             |                     
            
                3.28
             |                                 
            
                15,900
             |            
            
                 
             |                                       
         
    
        
            | 
                5/31/2007
             | 
            
                -0.70 / -1.84%
             |             
            
                37.30
             |           
            
                39.00
             |               
            
                37.30
             |                           
            
                37.30
             | 
            
                37.30
             |                     
            
                2.97
             |                                 
            
                9,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/30/2007
             | 
            
                -0.80 / -2.06%
             |             
            
                37.30
             |           
            
                38.00
             |               
            
                36.00
             |                           
            
                38.00
             | 
            
                38.00
             |                     
            
                3.03
             |                                 
            
                5,600
             |            
            
                 
             |                                       
         
    
        
            | 
                5/29/2007
             | 
            
                -1.20 / -3.00%
             |             
            
                39.20
             |           
            
                40.80
             |               
            
                38.50
             |                           
            
                38.80
             | 
            
                38.80
             |                     
            
                3.09
             |                                 
            
                21,200
             |  
            
                 
             |                                                              
             
    
         
    
    
 |