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            | 
                    Closing price on 3/13/2014
                 |  |  
    
        |           
                
                    | Open | 11.60 |  
                    | High | 11.70 |  
                    | Low | 11.60 |  
                    | Volume | 6,800 |  
                    | Split-adjusted Price | 4.93 |  
                
             | 
 |  PTI Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 2/26/2014 | 0.00 / 0.00% | 11.50 | 11.70 | 11.50 | 11.70 | 11.70 | 4.97 | 5,147 |   |  			
            | 2/25/2014 | -0.10 / -0.85% | 11.50 | 11.70 | 11.50 | 11.70 | 11.70 | 4.97 | 8,916 |   |  
            | 2/24/2014 | 0.00 / 0.00% | 11.60 | 11.80 | 11.60 | 11.80 | 11.80 | 5.02 | 3,110 |   |  			
            | 2/21/2014 | 0.00 / 0.00% | 11.40 | 11.80 | 11.40 | 11.80 | 11.80 | 5.02 | 20,026 |   |  
            | 2/20/2014 | +0.50 / +4.42% | 11.40 | 12.00 | 11.30 | 11.80 | 11.80 | 5.02 | 12,700 |   |  			
            | 2/19/2014 | +0.30 / +2.73% | 11.20 | 11.50 | 11.20 | 11.30 | 11.30 | 4.80 | 28,800 |   |  
            | 2/18/2014 | +0.50 / +4.76% | 10.60 | 11.00 | 10.60 | 11.00 | 11.00 | 4.68 | 17,600 |   |  			
            | 2/17/2014 | +0.20 / +1.94% | 10.50 | 11.00 | 10.40 | 10.50 | 10.50 | 4.46 | 4,045 |   |  
            | 2/14/2014 | -0.20 / -1.90% | 10.40 | 10.60 | 10.30 | 10.30 | 10.30 | 4.38 | 6,396 |   |  			
            | 2/13/2014 | -0.30 / -2.78% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 4.46 | 500 |   |  
            | 2/12/2014 | -0.20 / -1.82% | 10.50 | 10.80 | 10.50 | 10.80 | 10.80 | 4.59 | 10,200 |   |  			
            | 2/11/2014 | +0.20 / +1.85% | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 4.68 | 861 |   |  
            | 2/10/2014 | 0.00 / 0.00% | 10.80 | 10.80 | 10.80 | 10.80 | 10.80 | 4.59 | 3,000 |   |  			
            | 2/7/2014 | 0.00 / 0.00% | 10.80 | 10.80 | 10.80 | 10.80 | 10.80 | 4.59 | 0 |   |  
            | 2/6/2014 | 0.00 / 0.00% | 10.80 | 10.80 | 10.80 | 10.80 | 10.80 | 4.59 | 0 |   |  			
            | 1/27/2014 | 0.00 / 0.00% | 10.80 | 10.80 | 10.80 | 10.80 | 10.80 | 4.59 | 0 |   |  
            | 1/24/2014 | 0.00 / 0.00% | 10.80 | 10.80 | 10.80 | 10.80 | 10.80 | 4.59 | 0 |   |  			
            | 1/23/2014 | -0.20 / -1.82% | 10.80 | 10.80 | 10.80 | 10.80 | 10.80 | 4.59 | 100 |   |  
            | 1/22/2014 | 0.00 / 0.00% | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 4.68 | 0 |   |  |