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                    Closing price on 4/10/2014
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        |           
                
                    | Open | 11.00 |  
                    | High | 11.50 |  
                    | Low | 11.00 |  
                    | Volume | 1,100 |  
                    | Split-adjusted Price | 4.89 |  
                
             | 
 |  PTI Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/10/2014 | -0.20 / -1.71% | 11.00 | 11.50 | 11.00 | 11.50 | 11.50 | 4.89 | 1,100 |   |  
            | 4/8/2014 | +0.20 / +1.74% | 10.40 | 11.70 | 10.40 | 11.70 | 11.70 | 4.97 | 2,723 |   |  			
            | 4/7/2014 | -0.20 / -1.71% | 11.80 | 11.80 | 11.50 | 11.50 | 11.50 | 4.89 | 8,077 |   |  
            | 4/4/2014 | 0.00 / 0.00% | 11.70 | 11.70 | 11.70 | 11.70 | 11.70 | 4.97 | 200 |   |  			
            | 4/3/2014 | -0.20 / -1.68% | 11.90 | 11.90 | 11.70 | 11.70 | 11.70 | 4.97 | 600 |   |  
            | 4/2/2014 | 0.00 / 0.00% | 11.90 | 11.90 | 11.70 | 11.90 | 11.90 | 5.06 | 3,400 |   |  			
            | 4/1/2014 | 0.00 / 0.00% | 11.90 | 11.90 | 11.90 | 11.90 | 11.90 | 5.06 | 600 |   |  
            | 3/31/2014 | -0.10 / -0.83% | 12.00 | 12.00 | 11.90 | 11.90 | 11.90 | 5.06 | 3,700 |   |  			
            | 3/28/2014 | 0.00 / 0.00% | 12.00 | 12.00 | 12.00 | 12.00 | 12.00 | 5.10 | 4,500 |   |  
            | 3/27/2014 | 0.00 / 0.00% | 12.00 | 12.00 | 12.00 | 12.00 | 12.00 | 5.10 | 11 |   |  			
            | 3/26/2014 | -0.10 / -0.83% | 12.00 | 12.00 | 11.90 | 12.00 | 12.00 | 5.10 | 10,600 |   |  
            | 3/25/2014 | 0.00 / 0.00% | 12.00 | 12.20 | 11.90 | 12.10 | 12.10 | 5.14 | 18,900 |   |  			
            | 3/24/2014 | +0.10 / +0.83% | 12.00 | 12.10 | 11.90 | 12.10 | 12.10 | 5.14 | 20,789 |   |  
            | 3/21/2014 | 0.00 / 0.00% | 11.90 | 12.00 | 11.90 | 12.00 | 12.00 | 5.10 | 15,572 |   |  			
            | 3/20/2014 | 0.00 / 0.00% | 12.00 | 12.00 | 11.90 | 12.00 | 12.00 | 5.10 | 15,100 |   |  
            | 3/19/2014 | +0.30 / +2.56% | 11.60 | 12.00 | 11.60 | 12.00 | 12.00 | 5.10 | 36,230 |   |  			
            | 3/18/2014 | 0.00 / 0.00% | 11.70 | 11.70 | 11.70 | 11.70 | 11.70 | 4.97 | 970 |   |  
            | 3/17/2014 | 0.00 / 0.00% | 11.70 | 11.70 | 11.70 | 11.70 | 11.70 | 4.97 | 1,400 |   |  			
            | 3/14/2014 | +0.10 / +0.86% | 11.60 | 11.70 | 11.60 | 11.70 | 11.70 | 4.97 | 9,320 |   |  
            | 3/13/2014 | 0.00 / 0.00% | 11.60 | 11.70 | 11.60 | 11.60 | 11.60 | 4.93 | 6,800 |   |  			
            | 3/12/2014 | -0.50 / -4.13% | 12.10 | 12.10 | 11.50 | 11.60 | 11.60 | 4.93 | 34,300 |   |  
            | 3/11/2014 | -0.20 / -1.63% | 12.30 | 12.30 | 11.80 | 12.10 | 12.10 | 5.14 | 4,100 |   |  			
            | 3/10/2014 | +0.40 / +3.36% | 12.30 | 12.30 | 12.30 | 12.30 | 12.30 | 5.23 | 100 |   |  
            | 3/7/2014 | 0.00 / 0.00% | 11.90 | 11.90 | 11.80 | 11.90 | 11.90 | 5.06 | 1,900 |   |  			
            | 3/6/2014 | 0.00 / 0.00% | 11.90 | 11.90 | 11.90 | 11.90 | 11.90 | 5.06 | 0 |   |  
            | 3/5/2014 | +0.10 / +0.85% | 11.70 | 11.90 | 11.70 | 11.90 | 11.90 | 5.06 | 2,300 |   |  			
            | 3/4/2014 | 0.00 / 0.00% | 11.80 | 11.80 | 10.80 | 11.80 | 11.80 | 5.02 | 2,240 |   |  
            | 3/3/2014 | -0.50 / -4.07% | 12.00 | 12.30 | 11.80 | 11.80 | 11.80 | 5.02 | 3,600 |   |  			
            | 2/28/2014 | +0.30 / +2.50% | 12.00 | 12.30 | 11.50 | 12.30 | 12.30 | 5.23 | 8,800 |   |  
            | 2/27/2014 | +0.30 / +2.56% | 11.70 | 12.30 | 11.70 | 12.00 | 12.00 | 5.10 | 29,200 |   |  |