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                    Closing price on 1/7/2021
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        |           
                
                    | Open | 60.00 |  
                    | High | 60.30 |  
                    | Low | 58.90 |  
                    | Volume | 245,200 |  
                    | Split-adjusted Price | 35.90 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/7/2021 | -0.30 / -0.50% | 60.00 | 60.30 | 58.90 | 60.00 | 59.37 | 35.90 | 245,200 |   |  
            | 1/6/2021 | -0.70 / -1.15% | 61.00 | 61.00 | 60.00 | 60.30 | 60.68 | 36.08 | 385,100 |   |  			
            | 1/5/2021 | -0.80 / -1.29% | 61.80 | 61.90 | 60.80 | 61.00 | 61.80 | 36.49 | 156,100 |   |  
            | 1/4/2021 | +0.20 / +0.32% | 61.60 | 62.50 | 61.60 | 61.80 | 61.91 | 36.97 | 177,800 |   |  			
            | 12/31/2020 | +0.80 / +1.32% | 60.80 | 62.40 | 60.10 | 61.60 | 61.17 | 36.85 | 313,390 |   |  
            | 12/30/2020 | +2.30 / +3.93% | 58.50 | 60.90 | 58.40 | 60.80 | 60.07 | 36.38 | 449,650 |   |  			
            | 12/29/2020 | +0.40 / +0.69% | 58.00 | 58.50 | 57.90 | 58.50 | 58.09 | 35.00 | 126,560 |   |  
            | 12/28/2020 | -0.70 / -1.19% | 58.80 | 58.90 | 57.80 | 58.10 | 58.23 | 34.76 | 253,070 |   |  			
            | 12/25/2020 | +0.30 / +0.51% | 58.10 | 59.20 | 57.60 | 58.80 | 58.38 | 35.18 | 125,340 |   |  
            | 12/24/2020 | -0.50 / -0.85% | 58.80 | 58.80 | 57.70 | 58.50 | 58.01 | 35.00 | 179,510 |   |  			
            | 12/23/2020 | -0.90 / -1.50% | 59.90 | 59.90 | 58.00 | 59.00 | 59.21 | 35.30 | 135,440 |   |  
            | 12/22/2020 | +1.10 / +1.87% | 58.80 | 59.90 | 58.10 | 59.90 | 58.93 | 35.84 | 275,730 |   |  			
            | 12/21/2020 | +0.60 / +1.03% | 58.10 | 59.40 | 57.40 | 58.80 | 58.22 | 35.18 | 699,170 |   |  
            | 12/18/2020 | -0.80 / -1.36% | 59.00 | 59.00 | 58.00 | 58.20 | 58.39 | 34.82 | 480,350 |   |  			
            | 12/17/2020 | -1.20 / -1.99% | 59.50 | 59.70 | 57.90 | 59.00 | 58.99 | 35.30 | 365,240 |   |  
            | 12/16/2020 | +0.50 / +0.84% | 60.00 | 60.20 | 59.50 | 60.20 | 59.79 | 36.02 | 311,650 |   |  			
            | 12/15/2020 | -0.30 / -0.50% | 60.00 | 60.20 | 59.60 | 59.70 | 59.81 | 35.72 | 163,620 |   |  
            | 12/14/2020 | +0.40 / +0.67% | 59.60 | 61.00 | 59.00 | 60.00 | 60.13 | 35.90 | 252,720 |   |  			
            | 12/11/2020 | +0.50 / +0.85% | 59.20 | 59.60 | 58.60 | 59.60 | 59.18 | 35.66 | 120,860 |   |  
            | 12/10/2020 | -0.40 / -0.67% | 59.50 | 60.00 | 59.00 | 59.10 | 59.45 | 35.36 | 312,840 |   |  			
            | 12/9/2020 | -0.10 / -0.17% | 59.60 | 60.70 | 59.20 | 59.50 | 59.83 | 35.60 | 242,290 |   |  
            | 12/8/2020 | -0.40 / -0.67% | 60.40 | 60.40 | 59.20 | 59.60 | 59.62 | 35.66 | 229,100 |   |  			
            | 12/7/2020 | -0.20 / -0.33% | 59.90 | 60.90 | 59.80 | 60.00 | 60.14 | 35.90 | 209,010 |   |  
            | 12/4/2020 | -0.80 / -1.31% | 61.00 | 61.30 | 59.80 | 60.20 | 60.43 | 36.02 | 195,640 |   |  			
            | 12/3/2020 | +1.90 / +3.21% | 59.10 | 61.00 | 58.50 | 61.00 | 59.37 | 36.49 | 308,900 |   |  
            | 12/2/2020 | -0.10 / -0.17% | 59.20 | 59.60 | 58.70 | 59.10 | 59.11 | 35.36 | 161,140 |   |  			
            | 12/1/2020 | +1.10 / +1.89% | 57.80 | 59.20 | 56.50 | 59.20 | 58.21 | 35.42 | 351,950 |   |  
            | 11/30/2020 | +0.80 / +1.40% | 57.50 | 58.90 | 57.00 | 58.10 | 58.26 | 34.76 | 311,800 |   |  			
            | 11/27/2020 | +0.90 / +1.60% | 56.40 | 57.50 | 56.40 | 57.30 | 57.03 | 34.28 | 235,650 |   |  
            | 11/26/2020 | -0.10 / -0.18% | 56.20 | 56.40 | 55.80 | 56.40 | 56.11 | 33.74 | 190,960 |   |  |