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                    Closing price on 3/5/2021
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        |           
                
                    | Open | 8.00 |  
                    | High | 8.30 |  
                    | Low | 7.90 |  
                    | Volume | 28,000 |  
                    | Split-adjusted Price | 6.73 |  
                
             | 
 |  NST Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/5/2021 | +0.30 / +3.75% | 8.00 | 8.30 | 7.90 | 8.30 | 8.08 | 6.73 | 28,000 |   |  
            | 3/4/2021 | 0.00 / 0.00% | 8.00 | 8.00 | 7.90 | 8.00 | 8.00 | 6.49 | 33,300 |   |  			
            | 3/3/2021 | -0.10 / -1.23% | 8.00 | 8.10 | 8.00 | 8.00 | 8.02 | 6.49 | 10,000 |   |  
            | 3/2/2021 | -0.10 / -1.22% | 8.20 | 8.20 | 8.10 | 8.10 | 8.11 | 6.57 | 19,600 |   |  			
            | 3/1/2021 | 0.00 / 0.00% | 8.20 | 8.20 | 8.00 | 8.20 | 8.08 | 6.65 | 5,000 |   |  
            | 2/26/2021 | -0.10 / -1.20% | 8.00 | 8.20 | 7.90 | 8.20 | 8.01 | 6.65 | 19,000 |   |  			
            | 2/25/2021 | +0.30 / +3.75% | 8.00 | 8.30 | 7.80 | 8.30 | 7.92 | 6.73 | 29,900 |   |  
            | 2/24/2021 | +0.10 / +1.27% | 7.80 | 8.30 | 7.80 | 8.00 | 8.03 | 6.49 | 69,300 |   |  			
            | 2/23/2021 | +0.10 / +1.28% | 7.80 | 7.90 | 7.80 | 7.90 | 7.80 | 6.41 | 8,300 |   |  
            | 2/22/2021 | +0.20 / +2.63% | 7.70 | 8.00 | 7.70 | 7.80 | 7.77 | 6.33 | 29,300 |   |  			
            | 2/19/2021 | 0.00 / 0.00% | 7.50 | 7.70 | 7.40 | 7.60 | 7.47 | 6.16 | 10,200 |   |  
            | 2/18/2021 | 0.00 / 0.00% | 7.40 | 7.70 | 7.40 | 7.60 | 7.68 | 6.16 | 17,900 |   |  			
            | 2/17/2021 | +0.20 / +2.70% | 7.50 | 7.60 | 7.50 | 7.60 | 7.60 | 6.16 | 9,700 |   |  
            | 2/9/2021 | +0.10 / +1.37% | 7.10 | 7.40 | 7.10 | 7.40 | 7.26 | 6.00 | 5,900 |   |  			
            | 2/8/2021 | -0.30 / -3.95% | 7.60 | 7.60 | 7.30 | 7.30 | 7.37 | 5.92 | 19,800 |   |  
            | 2/5/2021 | +0.10 / +1.33% | 7.20 | 7.60 | 7.20 | 7.60 | 7.38 | 6.16 | 12,700 |   |  			
            | 2/4/2021 | -0.20 / -2.60% | 7.50 | 7.50 | 7.10 | 7.50 | 7.22 | 6.08 | 18,900 |   |  
            | 2/3/2021 | +0.50 / +6.94% | 7.40 | 7.70 | 7.40 | 7.70 | 7.45 | 6.24 | 11,400 |   |  			
            | 2/2/2021 | 0.00 / 0.00% | 7.00 | 7.20 | 6.90 | 7.20 | 7.00 | 5.84 | 29,100 |   |  
            | 2/1/2021 | -0.60 / -7.69% | 7.80 | 7.80 | 7.20 | 7.20 | 7.34 | 5.84 | 27,600 |   |  			
            | 1/29/2021 | +0.30 / +4.00% | 7.40 | 7.80 | 7.40 | 7.80 | 7.52 | 6.33 | 30,810 |   |  
            | 1/28/2021 | -0.80 / -9.64% | 7.80 | 7.80 | 7.50 | 7.50 | 7.57 | 6.08 | 69,700 |   |  			
            | 1/27/2021 | -0.60 / -6.74% | 8.50 | 8.60 | 8.30 | 8.30 | 8.50 | 6.73 | 19,600 |   |  
            | 1/26/2021 | -0.10 / -1.11% | 9.00 | 9.00 | 8.60 | 8.90 | 8.80 | 7.22 | 29,200 |   |  			
            | 1/25/2021 | +0.20 / +2.27% | 8.80 | 9.30 | 8.80 | 9.00 | 9.10 | 7.30 | 91,200 |   |  
            | 1/22/2021 | +0.30 / +3.53% | 8.60 | 8.90 | 8.50 | 8.80 | 8.67 | 7.14 | 87,500 |   |  			
            | 1/21/2021 | +0.30 / +3.66% | 8.40 | 8.50 | 8.20 | 8.50 | 8.33 | 6.89 | 30,800 |   |  
            | 1/20/2021 | +0.20 / +2.50% | 8.00 | 8.20 | 7.60 | 8.20 | 7.78 | 6.65 | 31,400 |   |  			
            | 1/19/2021 | -0.60 / -6.98% | 8.80 | 8.80 | 8.00 | 8.00 | 8.35 | 6.49 | 84,700 |   |  
            | 1/18/2021 | 0.00 / 0.00% | 8.60 | 8.80 | 8.60 | 8.60 | 8.62 | 6.97 | 57,000 |   |  |