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                    Closing price on 6/1/2022
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                    | Open | 7.40 |  
                    | High | 7.60 |  
                    | Low | 7.40 |  
                    | Volume | 600 |  
                    | Split-adjusted Price | 6.16 |  
                
             | 
 |  NST Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/1/2022 | 0.00 / 0.00% | 7.40 | 7.60 | 7.40 | 7.60 | 7.57 | 6.16 | 600 |   |  
            | 5/31/2022 | -0.20 / -2.56% | 7.90 | 7.90 | 7.50 | 7.60 | 7.60 | 6.16 | 7,600 |   |  			
            | 5/30/2022 | 0.00 / 0.00% | 7.80 | 7.80 | 7.60 | 7.80 | 7.63 | 6.33 | 2,900 |   |  
            | 5/27/2022 | -0.10 / -1.27% | 7.60 | 7.80 | 7.60 | 7.80 | 7.64 | 6.33 | 6,600 |   |  			
            | 5/26/2022 | 0.00 / 0.00% | 7.90 | 7.90 | 7.70 | 7.90 | 7.82 | 6.41 | 4,000 |   |  
            | 5/25/2022 | +0.10 / +1.28% | 7.80 | 7.90 | 7.80 | 7.90 | 7.81 | 6.41 | 900 |   |  			
            | 5/24/2022 | -0.10 / -1.27% | 7.80 | 7.80 | 7.60 | 7.80 | 7.74 | 6.33 | 3,200 |   |  
            | 5/23/2022 | 0.00 / 0.00% | 8.00 | 8.00 | 7.60 | 7.90 | 7.85 | 6.41 | 3,300 |   |  			
            | 5/20/2022 | -0.20 / -2.47% | 7.90 | 8.00 | 7.90 | 7.90 | 7.98 | 6.41 | 4,000 |   |  
            | 5/19/2022 | -0.10 / -1.22% | 8.10 | 8.10 | 7.70 | 8.10 | 8.00 | 6.57 | 5,200 |   |  			
            | 5/18/2022 | +0.10 / +1.23% | 8.10 | 8.30 | 7.70 | 8.20 | 8.08 | 6.65 | 1,900 |   |  
            | 5/17/2022 | +0.20 / +2.53% | 7.90 | 8.10 | 7.80 | 8.10 | 7.97 | 6.57 | 7,900 |   |  			
            | 5/16/2022 | +0.60 / +8.22% | 7.90 | 7.90 | 7.20 | 7.90 | 7.27 | 6.41 | 8,400 |   |  
            | 5/13/2022 | -0.30 / -3.95% | 7.60 | 7.60 | 7.30 | 7.30 | 7.36 | 5.92 | 10,500 |   |  			
            | 5/12/2022 | -0.40 / -5.00% | 8.20 | 8.20 | 7.60 | 7.60 | 7.71 | 6.16 | 8,100 |   |  
            | 5/11/2022 | -0.30 / -3.61% | 8.00 | 8.00 | 7.70 | 8.00 | 7.78 | 6.49 | 7,600 |   |  			
            | 5/10/2022 | +0.60 / +7.79% | 7.70 | 8.30 | 7.70 | 8.30 | 7.73 | 6.73 | 2,100 |   |  
            | 5/9/2022 | -0.60 / -7.23% | 8.30 | 8.30 | 7.70 | 7.70 | 7.88 | 6.24 | 7,200 |   |  			
            | 5/6/2022 | -0.70 / -7.78% | 8.50 | 8.50 | 8.30 | 8.30 | 8.40 | 6.73 | 2,600 |   |  
            | 5/5/2022 | +0.10 / +1.12% | 8.90 | 9.00 | 8.50 | 9.00 | 8.54 | 7.30 | 10,800 |   |  			
            | 5/4/2022 | +0.50 / +5.95% | 8.60 | 9.00 | 8.40 | 8.90 | 8.71 | 7.22 | 2,600 |   |  
            | 4/29/2022 | -0.10 / -1.18% | 8.40 | 8.50 | 8.30 | 8.40 | 8.33 | 6.81 | 5,000 |   |  			
            | 4/28/2022 | -0.20 / -2.30% | 8.20 | 8.70 | 8.20 | 8.50 | 8.28 | 6.89 | 22,700 |   |  
            | 4/27/2022 | +0.40 / +4.82% | 8.90 | 8.90 | 8.70 | 8.70 | 8.80 | 7.06 | 200 |   |  			
            | 4/26/2022 | 0.00 / 0.00% | 7.70 | 8.30 | 7.70 | 8.30 | 8.07 | 6.73 | 13,500 |   |  
            | 4/25/2022 | -0.10 / -1.19% | 8.10 | 8.40 | 8.00 | 8.30 | 8.11 | 6.73 | 10,800 |   |  			
            | 4/22/2022 | +0.20 / +2.44% | 8.20 | 8.70 | 8.10 | 8.40 | 8.29 | 6.81 | 11,700 |   |  
            | 4/21/2022 | -0.80 / -8.89% | 8.60 | 8.70 | 8.10 | 8.20 | 8.28 | 6.65 | 25,000 |   |  			
            | 4/20/2022 | -0.30 / -3.23% | 9.30 | 9.30 | 9.00 | 9.00 | 9.06 | 7.30 | 500 |   |  
            | 4/19/2022 | +0.20 / +2.20% | 9.00 | 9.30 | 8.90 | 9.30 | 8.94 | 7.54 | 7,800 |   |  |