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            | 
                    Closing price on 8/24/2016
                 |  |  
    
        |           
                
                    | Open | 132.00 |  
                    | High | 134.00 |  
                    | Low | 132.00 |  
                    | Volume | 33,550 |  
                    | Split-adjusted Price | 28.40 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/24/2016 | +1.00 / +0.76% | 132.00 | 134.00 | 132.00 | 133.00 | 132.46 | 28.40 | 33,550 |   |  
            | 8/23/2016 | -1.00 / -0.75% | 132.00 | 133.00 | 131.00 | 132.00 | 131.95 | 28.18 | 11,580 |   |  			
            | 8/22/2016 | +1.00 / +0.76% | 130.00 | 133.00 | 130.00 | 133.00 | 132.00 | 28.40 | 55,190 |   |  
            | 8/19/2016 | +3.00 / +2.33% | 130.00 | 132.00 | 130.00 | 132.00 | 131.27 | 28.18 | 37,350 |   |  			
            | 8/18/2016 | +1.00 / +0.78% | 129.00 | 130.00 | 129.00 | 129.00 | 129.68 | 27.54 | 36,390 |   |  
            | 8/17/2016 | -2.00 / -1.54% | 130.00 | 130.00 | 126.00 | 128.00 | 127.92 | 27.33 | 80,760 |   |  			
            | 8/16/2016 | +3.00 / +2.36% | 127.00 | 130.00 | 126.00 | 130.00 | 128.22 | 27.76 | 54,320 |   |  
            | 8/15/2016 | +2.00 / +1.60% | 124.00 | 127.00 | 123.00 | 127.00 | 125.45 | 27.12 | 23,970 |   |  			
            | 8/12/2016 | +2.00 / +1.63% | 125.00 | 127.00 | 124.00 | 125.00 | 125.25 | 26.69 | 48,150 |   |  
            | 8/11/2016 | +2.00 / +1.65% | 120.00 | 125.00 | 120.00 | 123.00 | 123.34 | 26.26 | 68,030 |   |  			
            | 8/10/2016 | +1.00 / +0.83% | 119.00 | 121.00 | 119.00 | 121.00 | 119.70 | 25.83 | 69,280 |   |  
            | 8/9/2016 | 0.00 / 0.00% | 119.00 | 121.00 | 119.00 | 120.00 | 119.61 | 25.62 | 22,840 |   |  			
            | 8/8/2016 | -2.00 / -1.64% | 122.00 | 122.00 | 119.00 | 120.00 | 119.84 | 25.62 | 61,220 |   |  
            | 8/5/2016 | -1.00 / -0.81% | 122.00 | 125.00 | 119.00 | 122.00 | 121.16 | 26.05 | 34,690 |   |  			
            | 8/4/2016 | +5.00 / +4.24% | 119.00 | 125.00 | 119.00 | 123.00 | 122.93 | 26.26 | 79,160 |   |  
            | 8/3/2016 | +7.00 / +6.31% | 110.00 | 118.00 | 110.00 | 118.00 | 116.14 | 25.19 | 55,650 |   |  			
            | 8/2/2016 | -5.00 / -4.31% | 116.00 | 118.00 | 111.00 | 111.00 | 113.58 | 23.70 | 119,980 |   |  
            | 8/1/2016 | -8.00 / -6.45% | 124.00 | 124.00 | 116.00 | 116.00 | 116.59 | 24.77 | 233,210 |   |  			
            | 7/29/2016 | -2.00 / -1.59% | 126.00 | 126.00 | 124.00 | 124.00 | 124.84 | 26.47 | 50,930 |   |  
            | 7/28/2016 | -2.00 / -1.56% | 130.00 | 130.00 | 125.00 | 126.00 | 127.22 | 26.90 | 34,750 |   |  			
            | 7/27/2016 | 0.00 / 0.00% | 128.00 | 129.00 | 127.00 | 128.00 | 128.30 | 27.33 | 34,210 |   |  
            | 7/26/2016 | +1.00 / +0.79% | 127.00 | 128.00 | 127.00 | 128.00 | 127.05 | 27.33 | 28,020 |   |  			
            | 7/25/2016 | 0.00 / 0.00% | 127.00 | 127.00 | 124.00 | 127.00 | 125.38 | 27.12 | 90,540 |   |  
            | 7/22/2016 | -9.00 / -6.62% | 136.00 | 136.00 | 127.00 | 127.00 | 128.22 | 27.12 | 265,900 |   |  			
            | 7/21/2016 | +4.00 / +3.03% | 134.00 | 137.00 | 133.00 | 136.00 | 135.61 | 29.04 | 58,800 |   |  
            | 7/20/2016 | -1.00 / -0.75% | 132.00 | 133.00 | 129.00 | 132.00 | 131.03 | 28.18 | 64,560 |   |  			
            | 7/19/2016 | +3.00 / +2.31% | 130.00 | 134.00 | 127.00 | 133.00 | 129.99 | 28.40 | 101,550 |   |  
            | 7/18/2016 | 0.00 / 0.00% | 127.00 | 130.00 | 127.00 | 130.00 | 128.35 | 27.76 | 45,430 |   |  			
            | 7/15/2016 | -5.00 / -3.70% | 134.00 | 135.00 | 128.00 | 130.00 | 130.08 | 27.76 | 112,800 |   |  
            | 7/14/2016 | -2.00 / -1.46% | 137.00 | 137.00 | 135.00 | 135.00 | 135.95 | 28.82 | 64,920 |   |  |