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                    Closing price on 6/17/2015
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                    | Open | 10.50 |  
                    | High | 10.50 |  
                    | Low | 10.50 |  
                    | Volume | 0 |  
                    | Split-adjusted Price | 6.48 |  
                
             | 
 |  NST Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/17/2015 | 0.00 / 0.00% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 6.48 | 0 |   |  
            | 6/16/2015 | 0.00 / 0.00% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 6.48 | 65 |   |  			
            | 6/15/2015 | +0.10 / +0.96% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 6.48 | 100 |   |  
            | 6/12/2015 | +0.20 / +1.96% | 9.80 | 10.40 | 9.80 | 10.40 | 9.88 | 6.42 | 6,800 |   |  			
            | 6/11/2015 | -0.30 / -2.86% | 10.20 | 10.20 | 10.20 | 10.20 | 10.20 | 6.30 | 200 |   |  
            | 6/10/2015 | +0.50 / +5.00% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 6.48 | 100 |   |  			
            | 6/9/2015 | -0.50 / -4.76% | 9.60 | 10.00 | 9.50 | 10.00 | 9.56 | 6.17 | 1,700 |   |  
            | 6/8/2015 | -0.10 / -0.94% | 11.50 | 11.50 | 9.60 | 10.50 | 9.69 | 6.48 | 15,400 |   |  			
            | 6/5/2015 | -0.90 / -7.83% | 10.40 | 10.60 | 10.40 | 10.60 | 10.40 | 6.54 | 2,100 |   |  
            | 6/4/2015 | 0.00 / 0.00% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 0 |   |  			
            | 6/3/2015 | 0.00 / 0.00% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 0 |   |  
            | 6/2/2015 | +0.30 / +2.68% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 100 |   |  			
            | 6/1/2015 | 0.00 / 0.00% | 11.20 | 11.20 | 11.20 | 11.20 | 11.20 | 6.91 | 0 |   |  
            | 5/29/2015 | +0.80 / +7.69% | 11.20 | 11.20 | 11.20 | 11.20 | 11.20 | 6.91 | 100 |   |  			
            | 5/28/2015 | -0.10 / -0.95% | 10.00 | 10.40 | 9.80 | 10.40 | 9.88 | 6.42 | 5,100 |   |  
            | 5/27/2015 | -1.00 / -8.70% | 10.40 | 10.50 | 10.40 | 10.50 | 10.40 | 6.48 | 1,300 |   |  			
            | 5/26/2015 | +1.00 / +9.52% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 200 |   |  
            | 5/25/2015 | -0.50 / -4.55% | 10.50 | 10.50 | 10.50 | 10.50 | 10.50 | 6.48 | 8,783 |   |  			
            | 5/22/2015 | 0.00 / 0.00% | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 6.79 | 0 |   |  
            | 5/21/2015 | 0.00 / 0.00% | 11.00 | 11.00 | 11.00 | 11.00 | 11.00 | 6.79 | 50 |   |  			
            | 5/20/2015 | -0.50 / -4.35% | 10.40 | 11.00 | 10.40 | 11.00 | 10.46 | 6.79 | 12,700 |   |  
            | 5/19/2015 | +0.80 / +7.48% | 11.50 | 11.50 | 11.50 | 11.50 | 11.50 | 7.10 | 100 |   |  			
            | 5/18/2015 | -1.10 / -9.32% | 10.70 | 10.70 | 10.70 | 10.70 | 10.70 | 6.61 | 500 |   |  
            | 5/15/2015 | +0.90 / +8.26% | 11.80 | 11.80 | 11.80 | 11.80 | 11.80 | 7.28 | 200 |   |  			
            | 5/14/2015 | -0.10 / -0.91% | 12.00 | 12.00 | 10.90 | 10.90 | 11.45 | 6.73 | 200 |   |  
            | 5/13/2015 | -0.60 / -5.17% | 11.90 | 11.90 | 11.00 | 11.00 | 11.45 | 6.79 | 200 |   |  			
            | 5/12/2015 | -1.20 / -9.38% | 11.60 | 11.60 | 11.60 | 11.60 | 11.60 | 7.16 | 1,100 |   |  
            | 5/11/2015 | +0.70 / +5.79% | 13.20 | 13.20 | 10.90 | 12.80 | 11.74 | 7.90 | 550 |   |  			
            | 5/8/2015 | +0.80 / +7.08% | 12.10 | 12.10 | 12.10 | 12.10 | 12.10 | 7.47 | 2,800 |   |  
            | 5/7/2015 | -1.00 / -8.13% | 11.10 | 11.30 | 11.10 | 11.30 | 11.10 | 6.98 | 2,200 |   |  |