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                    Closing price on 12/28/2020
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        |           
                
                    | Open | 58.80 |  
                    | High | 58.90 |  
                    | Low | 57.80 |  
                    | Volume | 253,070 |  
                    | Split-adjusted Price | 34.76 |  
                
             | 
 |  PTB Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 11/25/2020 | -0.50 / -0.88% | 57.00 | 57.40 | 56.30 | 56.50 | 56.75 | 33.80 | 183,110 |   |  			
            | 11/24/2020 | -0.50 / -0.87% | 57.50 | 57.80 | 56.60 | 57.00 | 57.04 | 34.10 | 331,820 |   |  
            | 11/23/2020 | +1.20 / +2.13% | 56.20 | 57.80 | 55.90 | 57.50 | 56.76 | 34.40 | 255,830 |   |  			
            | 11/20/2020 | 0.00 / 0.00% | 56.30 | 56.80 | 56.00 | 56.30 | 56.28 | 33.68 | 280,960 |   |  
            | 11/19/2020 | +2.10 / +3.87% | 54.20 | 56.80 | 54.20 | 56.30 | 55.87 | 33.68 | 496,090 |   |  			
            | 11/18/2020 | -0.20 / -0.37% | 54.40 | 54.50 | 54.00 | 54.20 | 54.17 | 32.43 | 138,090 |   |  
            | 11/17/2020 | +0.80 / +1.49% | 54.00 | 54.40 | 53.30 | 54.40 | 53.78 | 32.55 | 144,680 |   |  |