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            | 
                    Closing price on 2/28/2017
                 |  |  
    
        |           
                
                    | Open | 55.00 |  
                    | High | 55.40 |  
                    | Low | 52.60 |  
                    | Volume | 639,943 |  
                    | Split-adjusted Price | 21.64 |  
                
             | 
 |  CVT Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/28/2017 | -2.30 / -4.19% | 55.00 | 55.40 | 52.60 | 52.60 | 53.96 | 21.64 | 639,943 |   |  
            | 2/27/2017 | +2.90 / +5.58% | 52.20 | 54.90 | 51.90 | 54.90 | 53.27 | 22.59 | 591,030 |   |  			
            | 2/24/2017 | +1.40 / +2.77% | 50.90 | 54.00 | 50.60 | 52.00 | 52.25 | 21.40 | 798,170 |   |  
            | 2/23/2017 | -1.10 / -2.13% | 52.00 | 52.40 | 49.50 | 50.60 | 51.12 | 20.82 | 531,334 |   |  			
            | 2/22/2017 | +0.30 / +0.58% | 51.40 | 52.40 | 50.30 | 51.70 | 51.54 | 21.27 | 508,860 |   |  
            | 2/21/2017 | -0.20 / -0.39% | 51.60 | 51.70 | 50.80 | 51.40 | 51.13 | 21.15 | 447,488 |   |  			
            | 2/20/2017 | +0.50 / +0.98% | 51.20 | 52.90 | 50.00 | 51.60 | 51.90 | 21.23 | 530,830 |   |  
            | 2/17/2017 | +4.60 / +9.89% | 46.50 | 51.10 | 46.40 | 51.10 | 47.27 | 21.03 | 925,200 |   |  			
            | 2/16/2017 | -0.60 / -1.27% | 47.50 | 48.20 | 46.40 | 46.50 | 47.45 | 19.13 | 1,053,227 |   |  
            | 2/15/2017 | +0.20 / +0.43% | 47.00 | 47.80 | 46.60 | 47.10 | 47.13 | 19.38 | 274,480 |   |  			
            | 2/14/2017 | -1.00 / -2.09% | 47.70 | 48.00 | 46.70 | 46.90 | 47.30 | 19.30 | 537,700 |   |  
            | 2/13/2017 | +0.70 / +1.48% | 47.20 | 48.50 | 46.60 | 47.90 | 47.49 | 19.71 | 561,943 |   |  			
            | 2/10/2017 | +1.30 / +2.83% | 46.50 | 47.40 | 46.00 | 47.20 | 46.97 | 19.42 | 473,700 |   |  
            | 2/9/2017 | +1.40 / +3.15% | 44.50 | 45.90 | 44.40 | 45.90 | 45.44 | 18.89 | 717,010 |   |  			
            | 2/8/2017 | -0.60 / -1.33% | 45.10 | 45.10 | 43.70 | 44.50 | 44.26 | 18.31 | 906,492 |   |  
            | 2/7/2017 | -0.20 / -0.44% | 45.30 | 45.80 | 45.10 | 45.10 | 45.43 | 18.56 | 487,145 |   |  			
            | 2/6/2017 | +0.10 / +0.22% | 45.60 | 46.20 | 45.30 | 45.30 | 45.67 | 18.64 | 439,810 |   |  
            | 2/3/2017 | -1.30 / -2.80% | 46.70 | 46.80 | 45.00 | 45.20 | 45.40 | 18.60 | 564,398 |   |  			
            | 2/2/2017 | +1.90 / +4.26% | 44.70 | 46.50 | 44.70 | 46.50 | 45.36 | 19.13 | 349,100 |   |  
            | 1/25/2017 | +1.10 / +2.53% | 43.80 | 44.60 | 43.60 | 44.60 | 44.14 | 18.35 | 284,100 |   |  			
            | 1/24/2017 | +1.00 / +2.35% | 42.60 | 43.80 | 42.50 | 43.50 | 43.04 | 17.90 | 369,930 |   |  
            | 1/23/2017 | +1.10 / +2.66% | 41.60 | 44.50 | 41.60 | 42.50 | 43.25 | 17.49 | 666,740 |   |  			
            | 1/20/2017 | +3.70 / +9.81% | 38.00 | 41.40 | 38.00 | 41.40 | 40.20 | 17.04 | 546,580 |   |  
            | 1/19/2017 | -0.70 / -1.82% | 38.50 | 38.50 | 37.70 | 37.70 | 38.13 | 15.51 | 58,510 |   |  			
            | 1/18/2017 | +0.10 / +0.26% | 38.30 | 38.70 | 38.30 | 38.40 | 38.52 | 15.80 | 85,200 |   |  
            | 1/17/2017 | +0.10 / +0.26% | 38.20 | 38.90 | 38.20 | 38.30 | 38.48 | 15.76 | 181,360 |   |  			
            | 1/16/2017 | -0.50 / -1.29% | 38.70 | 38.70 | 38.20 | 38.20 | 38.37 | 15.72 | 70,400 |   |  
            | 1/13/2017 | -0.20 / -0.51% | 39.00 | 39.00 | 38.70 | 38.70 | 38.90 | 15.92 | 85,500 |   |  			
            | 1/12/2017 | +1.00 / +2.64% | 38.20 | 39.10 | 37.90 | 38.90 | 38.63 | 16.01 | 271,200 |   |  
            | 1/11/2017 | -0.10 / -0.26% | 37.80 | 38.00 | 37.80 | 37.90 | 37.95 | 15.60 | 80,700 |   |  |