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                    Closing price on 11/2/2015
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        |           
                
                    | Open | 10.80 |  
                    | High | 11.40 |  
                    | Low | 10.80 |  
                    | Volume | 4,200 |  
                    | Split-adjusted Price | 7.76 |  
                
             | 
 |  NST Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/2/2015 | -0.60 / -5.00% | 10.80 | 11.40 | 10.80 | 11.40 | 10.89 | 7.76 | 4,200 |   |  
            | 10/30/2015 | -0.80 / -6.25% | 11.60 | 12.00 | 11.60 | 12.00 | 11.65 | 8.16 | 3,100 |   |  			
            | 10/29/2015 | +1.10 / +9.40% | 12.00 | 12.80 | 12.00 | 12.80 | 12.40 | 8.71 | 3,300 |   |  
            | 10/28/2015 | 0.00 / 0.00% | 11.70 | 11.70 | 11.70 | 11.70 | 11.70 | 7.96 | 0 |   |  			
            | 10/27/2015 | +0.60 / +5.41% | 11.00 | 12.20 | 10.40 | 11.70 | 10.92 | 7.96 | 6,300 |   |  
            | 10/26/2015 | -0.20 / -1.77% | 11.10 | 11.10 | 11.10 | 11.10 | 11.10 | 7.55 | 300 |   |  			
            | 10/23/2015 | 0.00 / 0.00% | 11.30 | 11.30 | 11.30 | 11.30 | 11.30 | 7.69 | 0 |   |  
            | 10/22/2015 | +0.80 / +7.62% | 9.50 | 11.30 | 9.50 | 11.30 | 10.12 | 7.69 | 6,700 |   |  			
            | 10/21/2015 | 0.00 / 0.00% | 10.70 | 11.00 | 10.50 | 10.50 | 10.73 | 7.14 | 400 |   |  
            | 10/20/2015 | 0.00 / 0.00% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 7.14 | 0 |   |  			
            | 10/19/2015 | 0.00 / 0.00% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 7.14 | 0 |   |  
            | 10/16/2015 | 0.00 / 0.00% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 7.14 | 0 |   |  			
            | 10/15/2015 | 0.00 / 0.00% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 7.14 | 0 |   |  
            | 10/14/2015 | +0.80 / +8.25% | 9.20 | 10.50 | 9.20 | 10.50 | 9.61 | 7.14 | 1,800 |   |  			
            | 10/13/2015 | 0.00 / 0.00% | 9.70 | 9.70 | 9.70 | 9.70 | 9.70 | 6.60 | 0 |   |  
            | 10/12/2015 | -0.20 / -2.02% | 9.00 | 9.70 | 9.00 | 9.70 | 9.00 | 6.60 | 200 |   |  			
            | 10/9/2015 | 0.00 / 0.00% | 9.90 | 9.90 | 9.90 | 9.90 | 9.90 | 6.73 | 0 |   |  
            | 10/8/2015 | -0.30 / -2.94% | 9.80 | 9.90 | 9.80 | 9.90 | 9.80 | 6.73 | 600 |   |  			
            | 10/7/2015 | -0.30 / -2.86% | 9.60 | 10.20 | 9.60 | 10.20 | 9.75 | 6.94 | 400 |   |  
            | 10/6/2015 | -0.40 / -3.67% | 9.90 | 10.80 | 9.90 | 10.50 | 9.96 | 7.14 | 2,700 |   |  			
            | 10/5/2015 | +0.30 / +2.83% | 9.60 | 10.90 | 9.60 | 10.90 | 9.69 | 7.42 | 1,500 |   |  
            | 10/2/2015 | -0.20 / -1.85% | 10.60 | 10.60 | 10.60 | 10.60 | 10.60 | 7.21 | 100 |   |  			
            | 10/1/2015 | -1.20 / -10.00% | 10.80 | 10.80 | 10.80 | 10.80 | 10.80 | 6.67 | 4,400 |   |  
            | 9/30/2015 | +0.80 / +7.14% | 10.10 | 12.00 | 10.10 | 12.00 | 10.56 | 7.41 | 2,000 |   |  			
            | 9/29/2015 | 0.00 / 0.00% | 10.10 | 11.20 | 10.10 | 11.20 | 10.48 | 6.91 | 3,300 |   |  
            | 9/28/2015 | +0.80 / +7.69% | 11.30 | 11.30 | 11.20 | 11.20 | 11.30 | 6.91 | 300 |   |  			
            | 9/25/2015 | +0.90 / +9.47% | 10.40 | 10.40 | 10.40 | 10.40 | 10.40 | 6.42 | 100 |   |  
            | 9/24/2015 | -1.00 / -9.52% | 10.00 | 10.00 | 9.50 | 9.50 | 10.00 | 5.86 | 200 |   |  			
            | 9/23/2015 | 0.00 / 0.00% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 6.48 | 0 |   |  
            | 9/22/2015 | +0.70 / +7.14% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 6.48 | 600 |   |  |