| 
    
        
            | 
                    Closing price on 1/28/2021
                 |  |  
    
        |           
                
                    | Open | 7.80 |  
                    | High | 7.80 |  
                    | Low | 7.50 |  
                    | Volume | 69,700 |  
                    | Split-adjusted Price | 6.08 |  
                
             | 
 |  NST Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 1/15/2021 | -0.10 / -1.15% | 8.50 | 8.70 | 8.30 | 8.60 | 8.47 | 6.97 | 52,600 |   |  			
            | 1/14/2021 | -0.30 / -3.33% | 9.00 | 9.00 | 8.60 | 8.70 | 8.68 | 7.06 | 53,700 |   |  
            | 1/13/2021 | 0.00 / 0.00% | 8.80 | 9.20 | 8.60 | 9.00 | 8.84 | 7.30 | 38,400 |   |  			
            | 1/12/2021 | +0.10 / +1.12% | 9.00 | 9.20 | 8.90 | 9.00 | 8.99 | 7.30 | 57,500 |   |  
            | 1/11/2021 | +0.40 / +4.71% | 8.60 | 8.90 | 8.10 | 8.90 | 8.64 | 7.22 | 58,500 |   |  			
            | 1/8/2021 | -0.20 / -2.30% | 9.00 | 9.00 | 8.40 | 8.50 | 8.67 | 6.89 | 71,400 |   |  
            | 1/7/2021 | +0.30 / +3.57% | 8.50 | 8.80 | 8.50 | 8.70 | 8.65 | 7.06 | 71,100 |   |  			
            | 1/6/2021 | +0.60 / +7.69% | 8.00 | 8.50 | 7.90 | 8.40 | 8.18 | 6.81 | 120,700 |   |  
            | 1/5/2021 | +0.20 / +2.63% | 7.80 | 8.10 | 7.70 | 7.80 | 7.81 | 6.33 | 70,600 |   |  			
            | 1/4/2021 | +0.20 / +2.70% | 7.20 | 7.80 | 7.20 | 7.60 | 7.54 | 6.16 | 28,000 |   |  
            | 12/31/2020 | 0.00 / 0.00% | 7.40 | 7.40 | 7.10 | 7.40 | 7.26 | 6.00 | 19,100 |   |  			
            | 12/30/2020 | +0.20 / +2.78% | 7.30 | 7.50 | 7.20 | 7.40 | 7.32 | 6.00 | 28,100 |   |  
            | 12/29/2020 | -0.10 / -1.37% | 7.40 | 7.40 | 7.20 | 7.20 | 7.29 | 5.84 | 24,500 |   |  			
            | 12/28/2020 | +0.20 / +2.82% | 7.10 | 7.50 | 7.10 | 7.30 | 7.23 | 5.92 | 56,200 |   |  
            | 12/25/2020 | 0.00 / 0.00% | 7.10 | 7.10 | 7.10 | 7.10 | 7.10 | 5.76 | 28,000 |   |  			
            | 12/24/2020 | -0.10 / -1.39% | 7.10 | 7.10 | 6.90 | 7.10 | 7.05 | 5.76 | 60,200 |   |  
            | 12/23/2020 | +0.10 / +1.41% | 7.20 | 7.30 | 7.00 | 7.20 | 7.12 | 5.84 | 60,500 |   |  			
            | 12/22/2020 | 0.00 / 0.00% | 7.00 | 7.20 | 6.80 | 7.10 | 6.94 | 5.76 | 25,800 |   |  
            | 12/21/2020 | 0.00 / 0.00% | 7.10 | 7.20 | 6.90 | 7.10 | 6.98 | 5.76 | 40,000 |   |  			
            | 12/18/2020 | -0.10 / -1.39% | 7.10 | 7.20 | 6.80 | 7.10 | 7.11 | 5.76 | 19,000 |   |  
            | 12/17/2020 | +0.30 / +4.35% | 6.80 | 7.30 | 6.50 | 7.20 | 6.91 | 5.84 | 81,900 |   |  |