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            | 
                    Closing price on 3/27/2018
                 |  |  
    
        |           
                
                    | Open | 6.60 |  
                    | High | 6.90 |  
                    | Low | 6.60 |  
                    | Volume | 313,900 |  
                    | Split-adjusted Price | 6.70 |  
                
             | 
 |  VKC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/27/2018 | +0.20 / +3.08% | 6.60 | 6.90 | 6.60 | 6.70 | 6.76 | 6.70 | 313,900 |   |  
            | 3/26/2018 | +0.50 / +8.33% | 6.00 | 6.50 | 6.00 | 6.50 | 6.30 | 6.50 | 144,900 |   |  			
            | 3/23/2018 | -0.30 / -4.76% | 6.20 | 6.30 | 6.00 | 6.00 | 6.16 | 6.00 | 131,050 |   |  
            | 3/22/2018 | -0.20 / -3.08% | 6.60 | 6.60 | 6.30 | 6.30 | 6.35 | 6.30 | 159,907 |   |  			
            | 3/21/2018 | -0.20 / -2.99% | 6.70 | 6.70 | 6.40 | 6.50 | 6.54 | 6.50 | 178,269 |   |  
            | 3/20/2018 | +0.20 / +3.08% | 6.60 | 7.10 | 6.60 | 6.70 | 6.73 | 6.70 | 149,600 |   |  			
            | 3/19/2018 | -0.50 / -7.14% | 7.00 | 7.00 | 6.50 | 6.50 | 6.72 | 6.50 | 167,600 |   |  
            | 3/16/2018 | 0.00 / 0.00% | 6.90 | 7.00 | 6.90 | 7.00 | 6.91 | 7.00 | 6,300 |   |  			
            | 3/15/2018 | 0.00 / 0.00% | 7.00 | 7.10 | 7.00 | 7.00 | 7.00 | 7.00 | 28,700 |   |  
            | 3/14/2018 | 0.00 / 0.00% | 7.00 | 7.00 | 6.90 | 7.00 | 6.98 | 7.00 | 44,938 |   |  			
            | 3/13/2018 | -0.20 / -2.78% | 7.00 | 7.10 | 7.00 | 7.00 | 7.00 | 7.00 | 37,900 |   |  
            | 3/12/2018 | 0.00 / 0.00% | 7.10 | 7.20 | 7.00 | 7.20 | 7.05 | 7.20 | 98,200 |   |  			
            | 3/9/2018 | +0.20 / +2.86% | 7.00 | 7.20 | 7.00 | 7.20 | 7.06 | 7.20 | 22,702 |   |  
            | 3/8/2018 | -0.20 / -2.78% | 7.10 | 7.10 | 7.00 | 7.00 | 7.10 | 7.00 | 24,100 |   |  			
            | 3/7/2018 | 0.00 / 0.00% | 7.20 | 7.20 | 7.00 | 7.20 | 7.11 | 7.20 | 126,700 |   |  
            | 3/6/2018 | 0.00 / 0.00% | 7.10 | 7.20 | 7.10 | 7.20 | 7.19 | 7.20 | 36,000 |   |  			
            | 3/5/2018 | -0.10 / -1.37% | 7.20 | 7.20 | 7.10 | 7.20 | 7.14 | 7.20 | 21,000 |   |  
            | 3/2/2018 | +0.10 / +1.39% | 7.20 | 7.30 | 7.10 | 7.30 | 7.22 | 7.30 | 55,400 |   |  			
            | 3/1/2018 | -0.10 / -1.37% | 7.20 | 7.20 | 7.10 | 7.20 | 7.15 | 7.20 | 140,053 |   |  
            | 2/28/2018 | 0.00 / 0.00% | 7.20 | 7.30 | 7.10 | 7.30 | 7.18 | 7.30 | 65,400 |   |  			
            | 2/27/2018 | 0.00 / 0.00% | 7.30 | 7.30 | 7.20 | 7.30 | 7.21 | 7.30 | 51,700 |   |  
            | 2/26/2018 | 0.00 / 0.00% | 7.30 | 7.30 | 7.10 | 7.30 | 7.21 | 7.30 | 118,600 |   |  			
            | 2/23/2018 | -0.10 / -1.35% | 7.30 | 7.40 | 7.30 | 7.30 | 7.33 | 7.30 | 59,600 |   |  
            | 2/22/2018 | +0.10 / +1.37% | 7.30 | 7.40 | 7.30 | 7.40 | 7.30 | 7.40 | 175,600 |   |  			
            | 2/21/2018 | 0.00 / 0.00% | 7.30 | 7.50 | 7.30 | 7.30 | 7.42 | 7.30 | 43,446 |   |  
            | 2/13/2018 | +0.10 / +1.39% | 7.30 | 7.30 | 7.10 | 7.30 | 7.22 | 7.30 | 62,800 |   |  			
            | 2/12/2018 | +0.30 / +4.35% | 7.30 | 7.30 | 7.10 | 7.20 | 7.21 | 7.20 | 34,800 |   |  
            | 2/9/2018 | -0.20 / -2.82% | 7.00 | 7.10 | 6.80 | 6.90 | 6.96 | 6.90 | 116,000 |   |  			
            | 2/8/2018 | -0.40 / -5.33% | 7.30 | 7.30 | 7.10 | 7.10 | 7.16 | 7.10 | 1,919,702 |   |  
            | 2/7/2018 | +0.50 / +7.14% | 7.00 | 7.50 | 7.00 | 7.50 | 7.24 | 7.50 | 115,600 |   |  |