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                    Closing price on 3/20/2020
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        |           
                
                    | Open | 40.00 |  
                    | High | 40.00 |  
                    | Low | 37.40 |  
                    | Volume | 498,250 |  
                    | Split-adjusted Price | 21.03 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/20/2020 | -2.80 / -6.97% | 40.00 | 40.00 | 37.40 | 37.40 | 37.73 | 21.03 | 498,250 |   |  
            | 3/19/2020 | -3.00 / -6.94% | 41.10 | 41.20 | 40.20 | 40.20 | 40.39 | 22.60 | 255,180 |   |  			
            | 3/18/2020 | -0.80 / -1.82% | 45.50 | 45.50 | 42.80 | 43.20 | 43.46 | 24.29 | 243,370 |   |  
            | 3/17/2020 | -0.85 / -1.90% | 41.80 | 44.00 | 41.80 | 44.00 | 43.20 | 24.74 | 155,940 |   |  			
            | 3/16/2020 | -3.35 / -6.95% | 48.20 | 48.20 | 44.85 | 44.85 | 45.31 | 25.22 | 243,650 |   |  
            | 3/13/2020 | -2.10 / -4.17% | 46.80 | 49.00 | 46.80 | 48.20 | 46.86 | 27.10 | 237,450 |   |  			
            | 3/12/2020 | -3.70 / -6.85% | 53.00 | 53.00 | 50.30 | 50.30 | 50.42 | 28.28 | 143,310 |   |  
            | 3/11/2020 | -4.00 / -6.90% | 58.00 | 58.80 | 54.00 | 54.00 | 54.67 | 30.36 | 181,730 |   |  			
            | 3/10/2020 | +0.60 / +1.05% | 53.50 | 58.00 | 53.50 | 58.00 | 55.88 | 32.61 | 61,610 |   |  
            | 3/9/2020 | -4.30 / -6.97% | 58.80 | 58.80 | 57.40 | 57.40 | 57.75 | 32.28 | 83,930 |   |  			
            | 3/6/2020 | -1.30 / -2.06% | 63.00 | 63.00 | 61.60 | 61.70 | 62.15 | 34.69 | 66,570 |   |  
            | 3/5/2020 | -0.20 / -0.32% | 63.20 | 63.30 | 62.60 | 63.00 | 62.88 | 35.43 | 23,440 |   |  			
            | 3/4/2020 | -0.30 / -0.47% | 64.00 | 64.00 | 63.20 | 63.20 | 63.41 | 35.54 | 13,310 |   |  
            | 3/3/2020 | -0.40 / -0.63% | 64.20 | 64.20 | 63.00 | 63.50 | 63.57 | 35.71 | 9,360 |   |  			
            | 3/2/2020 | +0.90 / +1.43% | 63.00 | 63.90 | 62.50 | 63.90 | 62.85 | 35.93 | 9,610 |   |  
            | 2/28/2020 | -1.00 / -1.56% | 63.00 | 64.40 | 63.00 | 63.00 | 63.65 | 35.43 | 29,630 |   |  			
            | 2/27/2020 | 0.00 / 0.00% | 65.00 | 65.00 | 63.50 | 64.00 | 64.01 | 35.99 | 11,420 |   |  
            | 2/26/2020 | -2.00 / -3.03% | 62.00 | 65.80 | 62.00 | 64.00 | 62.91 | 35.99 | 11,540 |   |  			
            | 2/25/2020 | +2.00 / +3.13% | 63.50 | 66.00 | 62.80 | 66.00 | 64.17 | 37.11 | 30,530 |   |  
            | 2/24/2020 | -1.90 / -2.88% | 65.80 | 65.90 | 64.00 | 64.00 | 64.56 | 35.99 | 38,850 |   |  			
            | 2/21/2020 | -0.30 / -0.45% | 66.20 | 66.20 | 65.70 | 65.90 | 65.97 | 37.06 | 82,380 |   |  
            | 2/20/2020 | -0.20 / -0.30% | 67.20 | 67.20 | 66.10 | 66.20 | 66.27 | 37.22 | 87,890 |   |  			
            | 2/19/2020 | -0.90 / -1.34% | 67.30 | 67.30 | 66.40 | 66.40 | 66.66 | 37.34 | 64,790 |   |  
            | 2/18/2020 | 0.00 / 0.00% | 66.80 | 67.40 | 66.80 | 67.30 | 67.01 | 37.84 | 23,220 |   |  			
            | 2/17/2020 | -0.80 / -1.17% | 68.00 | 68.20 | 67.10 | 67.30 | 67.66 | 37.84 | 3,340 |   |  
            | 2/14/2020 | -0.30 / -0.44% | 68.30 | 68.40 | 68.00 | 68.10 | 68.17 | 38.29 | 474,850 |   |  			
            | 2/13/2020 | -0.20 / -0.29% | 68.00 | 68.60 | 68.00 | 68.40 | 68.28 | 38.46 | 39,690 |   |  
            | 2/12/2020 | +0.60 / +0.88% | 67.90 | 68.80 | 67.90 | 68.60 | 68.34 | 38.57 | 26,530 |   |  			
            | 2/11/2020 | +1.10 / +1.64% | 66.90 | 68.00 | 66.90 | 68.00 | 67.38 | 38.24 | 21,860 |   |  
            | 2/10/2020 | -0.20 / -0.30% | 68.00 | 68.00 | 66.80 | 66.90 | 66.98 | 37.62 | 9,480 |   |  |