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                    Closing price on 2/1/2018
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        |           
                
                    | Open | 48.70 |  
                    | High | 49.00 |  
                    | Low | 48.50 |  
                    | Volume | 11,100 |  
                    | Split-adjusted Price | 40.32 |  
                
             | 
 |  NCS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/1/2018 | 0.00 / 0.00% | 48.70 | 49.00 | 48.50 | 49.00 | 48.52 | 40.32 | 11,100 |   |  
            | 1/31/2018 | 0.00 / 0.00% | 49.00 | 49.00 | 48.00 | 49.00 | 48.69 | 40.32 | 1,536 |   |  			
            | 1/30/2018 | -1.00 / -2.00% | 49.00 | 49.00 | 49.00 | 49.00 | 49.00 | 40.32 | 200 |   |  
            | 1/29/2018 | +0.30 / +0.60% | 48.50 | 50.00 | 47.00 | 50.00 | 48.83 | 41.15 | 4,520 |   |  			
            | 1/26/2018 | -2.00 / -3.92% | 51.00 | 51.20 | 49.00 | 49.00 | 49.74 | 40.32 | 7,000 |   |  
            | 1/25/2018 | -0.10 / -0.20% | 51.20 | 52.00 | 51.00 | 51.00 | 51.53 | 41.97 | 5,425 |   |  			
            | 1/24/2018 | +0.90 / +1.79% | 50.20 | 51.10 | 50.00 | 51.10 | 50.19 | 42.05 | 8,500 |   |  
            | 1/23/2018 | +1.70 / +3.51% | 48.50 | 50.50 | 48.50 | 50.20 | 49.27 | 41.31 | 20,739 |   |  			
            | 1/22/2018 | +0.10 / +0.21% | 48.40 | 48.50 | 48.30 | 48.50 | 48.44 | 39.91 | 1,500 |   |  
            | 1/19/2018 | 0.00 / 0.00% | 48.40 | 48.80 | 48.30 | 48.30 | 48.44 | 39.75 | 6,600 |   |  			
            | 1/18/2018 | -0.20 / -0.41% | 48.20 | 48.30 | 48.20 | 48.30 | 48.27 | 39.75 | 1,810 |   |  
            | 1/17/2018 | -0.20 / -0.41% | 48.30 | 48.50 | 48.30 | 48.50 | 48.48 | 39.91 | 5,600 |   |  			
            | 1/16/2018 | +0.10 / +0.21% | 47.30 | 49.00 | 47.30 | 48.70 | 48.26 | 40.08 | 4,668 |   |  
            | 1/15/2018 | -0.20 / -0.41% | 49.00 | 49.50 | 41.50 | 48.60 | 47.85 | 39.99 | 14,730 |   |  			
            | 1/12/2018 | -0.40 / -0.82% | 48.80 | 49.00 | 48.50 | 48.60 | 48.79 | 39.99 | 2,350 |   |  
            | 1/11/2018 | +0.90 / +1.87% | 49.00 | 49.00 | 49.00 | 49.00 | 49.00 | 40.32 | 250 |   |  			
            | 1/10/2018 | 0.00 / 0.00% | 49.00 | 49.80 | 48.00 | 48.10 | 48.65 | 39.58 | 18,642 |   |  
            | 1/9/2018 | -1.20 / -2.43% | 48.80 | 49.40 | 48.10 | 48.10 | 48.74 | 39.58 | 9,015 |   |  			
            | 1/8/2018 | +0.50 / +1.02% | 49.80 | 49.80 | 48.80 | 49.30 | 49.39 | 40.57 | 4,968 |   |  
            | 1/5/2018 | -0.10 / -0.20% | 48.80 | 48.80 | 48.80 | 48.80 | 48.80 | 40.16 | 2,200 |   |  			
            | 1/4/2018 | -0.60 / -1.21% | 49.70 | 49.70 | 48.00 | 48.90 | 48.58 | 40.24 | 12,429 |   |  
            | 1/3/2018 | +0.50 / +1.02% | 49.00 | 50.40 | 49.00 | 49.50 | 49.72 | 40.74 | 3,060 |   |  			
            | 1/2/2018 | -1.00 / -2.00% | 49.00 | 49.00 | 48.00 | 49.00 | 48.65 | 40.32 | 1,500 |   |  
            | 12/29/2017 | +0.80 / +1.63% | 50.00 | 50.00 | 50.00 | 50.00 | 50.00 | 41.15 | 120 |   |  			
            | 12/28/2017 | -0.40 / -0.81% | 49.80 | 49.80 | 49.20 | 49.20 | 49.46 | 40.49 | 1,004 |   |  
            | 12/27/2017 | -0.10 / -0.20% | 49.50 | 49.90 | 49.50 | 49.60 | 49.67 | 40.82 | 2,525 |   |  			
            | 12/26/2017 | +0.40 / +0.81% | 49.70 | 50.00 | 49.70 | 49.70 | 49.73 | 40.90 | 9,079 |   |  
            | 12/25/2017 | -0.80 / -1.60% | 49.00 | 49.50 | 49.00 | 49.30 | 49.11 | 40.57 | 1,020 |   |  			
            | 12/22/2017 | +0.90 / +1.80% | 50.00 | 51.00 | 50.00 | 51.00 | 50.13 | 41.97 | 3,200 |   |  
            | 12/21/2017 | +0.10 / +0.20% | 50.00 | 51.00 | 49.50 | 50.10 | 50.15 | 41.23 | 19,735 |   |  |