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                    Closing price on 9/3/2020
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        |           
                
                    | Open | 50.50 |  
                    | High | 50.50 |  
                    | Low | 49.50 |  
                    | Volume | 112,000 |  
                    | Split-adjusted Price | 29.73 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/3/2020 | -0.30 / -0.60% | 50.50 | 50.50 | 49.50 | 49.70 | 50.07 | 29.73 | 112,000 |   |  
            | 9/1/2020 | -0.40 / -0.79% | 50.40 | 50.50 | 49.60 | 50.00 | 50.09 | 29.91 | 176,750 |   |  			
            | 8/31/2020 | -0.50 / -0.98% | 50.90 | 50.90 | 49.90 | 50.40 | 50.30 | 30.15 | 192,350 |   |  
            | 8/28/2020 | +0.10 / +0.20% | 51.00 | 51.80 | 50.60 | 50.90 | 51.00 | 30.45 | 227,860 |   |  			
            | 8/27/2020 | +1.30 / +2.63% | 49.50 | 51.50 | 49.50 | 50.80 | 50.68 | 30.39 | 346,280 |   |  
            | 8/26/2020 | +0.60 / +1.23% | 48.90 | 49.75 | 48.30 | 49.50 | 49.38 | 29.61 | 236,120 |   |  			
            | 8/25/2020 | +0.10 / +0.20% | 49.20 | 49.20 | 48.80 | 48.90 | 48.98 | 29.26 | 196,200 |   |  
            | 8/24/2020 | +1.00 / +2.09% | 48.10 | 49.50 | 48.10 | 48.80 | 48.69 | 29.20 | 115,370 |   |  			
            | 8/21/2020 | +1.40 / +3.02% | 46.70 | 48.00 | 46.40 | 47.80 | 47.18 | 28.60 | 198,070 |   |  
            | 8/20/2020 | -0.60 / -1.28% | 47.00 | 47.20 | 46.40 | 46.40 | 46.75 | 27.76 | 79,320 |   |  			
            | 8/19/2020 | +0.80 / +1.73% | 46.20 | 47.30 | 46.20 | 47.00 | 46.80 | 28.12 | 128,430 |   |  
            | 8/18/2020 | -0.10 / -0.22% | 47.00 | 47.00 | 46.10 | 46.20 | 46.35 | 27.64 | 61,150 |   |  			
            | 8/17/2020 | -0.20 / -0.43% | 46.50 | 46.90 | 46.05 | 46.30 | 46.18 | 27.70 | 67,540 |   |  
            | 8/14/2020 | -0.30 / -0.64% | 46.90 | 47.00 | 46.20 | 46.50 | 46.68 | 27.82 | 103,310 |   |  			
            | 8/13/2020 | +1.05 / +2.30% | 46.20 | 46.80 | 45.80 | 46.80 | 46.20 | 28.00 | 99,010 |   |  
            | 8/12/2020 | -0.30 / -0.65% | 46.05 | 47.00 | 45.60 | 45.75 | 45.93 | 27.37 | 76,590 |   |  			
            | 8/11/2020 | -0.35 / -0.75% | 47.20 | 47.20 | 46.00 | 46.05 | 46.09 | 27.55 | 61,070 |   |  
            | 8/10/2020 | +0.30 / +0.65% | 46.00 | 47.20 | 46.00 | 46.40 | 46.72 | 27.76 | 81,220 |   |  			
            | 8/7/2020 | -1.00 / -2.12% | 47.10 | 47.10 | 46.10 | 46.10 | 46.47 | 27.58 | 81,690 |   |  
            | 8/6/2020 | -0.10 / -0.21% | 47.00 | 47.80 | 46.90 | 47.10 | 47.06 | 28.18 | 70,130 |   |  			
            | 8/5/2020 | +2.15 / +4.77% | 45.10 | 47.40 | 44.50 | 47.20 | 46.40 | 28.24 | 78,690 |   |  
            | 8/4/2020 | +0.95 / +2.15% | 44.50 | 45.50 | 44.50 | 45.05 | 44.95 | 26.95 | 56,690 |   |  			
            | 8/3/2020 | +0.30 / +0.68% | 42.85 | 45.00 | 42.85 | 44.10 | 44.46 | 26.38 | 89,750 |   |  
            | 7/31/2020 | -0.20 / -0.45% | 43.10 | 44.10 | 43.00 | 43.80 | 43.68 | 26.20 | 34,890 |   |  			
            | 7/30/2020 | +1.00 / +2.33% | 44.50 | 44.50 | 43.25 | 44.00 | 43.79 | 26.32 | 38,590 |   |  
            | 7/29/2020 | -2.90 / -6.32% | 45.80 | 45.80 | 42.70 | 43.00 | 43.08 | 25.73 | 289,250 |   |  			
            | 7/28/2020 | +1.90 / +4.32% | 43.20 | 45.90 | 43.20 | 45.90 | 44.68 | 27.46 | 128,030 |   |  
            | 7/27/2020 | -3.30 / -6.98% | 44.00 | 46.00 | 44.00 | 44.00 | 44.42 | 26.32 | 517,220 |   |  			
            | 7/24/2020 | -2.20 / -4.44% | 48.10 | 49.50 | 47.00 | 47.30 | 48.20 | 28.30 | 178,660 |   |  
            | 7/23/2020 | -0.70 / -1.39% | 50.20 | 50.50 | 49.50 | 49.50 | 49.70 | 29.61 | 71,310 |   |  |