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                    Closing price on 5/8/2018
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        |           
                
                    | Open | 31.00 |  
                    | High | 31.60 |  
                    | Low | 30.60 |  
                    | Volume | 1,503,690 |  
                    | Split-adjusted Price | 15.06 |  
                
             | 
 |  NT2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/8/2018 | +0.25 / +0.82% | 31.00 | 31.60 | 30.60 | 30.85 | 30.85 | 15.06 | 1,503,690 |   |  
            | 5/7/2018 | +0.15 / +0.49% | 31.00 | 31.40 | 30.45 | 30.60 | 30.58 | 14.93 | 332,890 |   |  			
            | 5/4/2018 | -0.60 / -1.93% | 31.20 | 31.20 | 30.30 | 30.45 | 30.48 | 14.86 | 651,340 |   |  
            | 5/3/2018 | 0.00 / 0.00% | 30.90 | 31.05 | 30.40 | 31.05 | 30.60 | 15.15 | 471,840 |   |  			
            | 5/2/2018 | -0.45 / -1.43% | 31.95 | 31.95 | 31.05 | 31.05 | 31.38 | 15.15 | 301,760 |   |  
            | 4/27/2018 | -0.20 / -0.63% | 31.90 | 32.00 | 31.30 | 31.50 | 31.64 | 15.37 | 201,360 |   |  			
            | 4/26/2018 | -0.30 / -0.94% | 32.00 | 32.00 | 31.50 | 31.70 | 31.74 | 15.47 | 436,400 |   |  
            | 4/24/2018 | +1.50 / +4.92% | 30.10 | 32.30 | 30.10 | 32.00 | 31.39 | 15.62 | 336,940 |   |  			
            | 4/23/2018 | -1.75 / -5.43% | 32.25 | 32.30 | 30.50 | 30.50 | 31.39 | 14.89 | 313,160 |   |  
            | 4/20/2018 | +0.35 / +1.10% | 32.20 | 32.90 | 31.65 | 32.25 | 32.11 | 15.74 | 294,058 |   |  			
            | 4/19/2018 | +0.20 / +0.63% | 31.70 | 32.30 | 31.70 | 31.90 | 32.04 | 15.57 | 588,290 |   |  
            | 4/18/2018 | +0.10 / +0.32% | 31.60 | 31.90 | 31.60 | 31.70 | 31.76 | 15.47 | 573,740 |   |  			
            | 4/17/2018 | -0.05 / -0.16% | 31.65 | 31.70 | 31.55 | 31.60 | 31.62 | 15.42 | 731,590 |   |  
            | 4/16/2018 | +0.05 / +0.16% | 31.05 | 31.85 | 31.05 | 31.65 | 31.66 | 15.45 | 523,540 |   |  			
            | 4/13/2018 | -0.40 / -1.25% | 32.00 | 32.20 | 31.55 | 31.60 | 31.68 | 15.42 | 218,470 |   |  
            | 4/12/2018 | +0.70 / +2.24% | 31.70 | 32.20 | 31.10 | 32.00 | 31.84 | 15.62 | 411,750 |   |  			
            | 4/11/2018 | 0.00 / 0.00% | 31.30 | 32.50 | 31.10 | 31.30 | 31.53 | 15.28 | 339,890 |   |  
            | 4/10/2018 | -0.50 / -1.57% | 32.00 | 32.00 | 31.10 | 31.30 | 31.43 | 15.28 | 641,090 |   |  			
            | 4/9/2018 | -1.20 / -3.64% | 33.00 | 33.30 | 31.70 | 31.80 | 32.27 | 15.52 | 241,280 |   |  
            | 4/6/2018 | +0.05 / +0.15% | 34.50 | 34.50 | 32.95 | 33.00 | 33.50 | 16.11 | 586,470 |   |  			
            | 4/5/2018 | +2.15 / +6.98% | 32.00 | 32.95 | 31.20 | 32.95 | 32.75 | 16.08 | 385,890 |   |  
            | 4/4/2018 | -0.05 / -0.16% | 30.80 | 31.00 | 30.75 | 30.80 | 30.80 | 15.03 | 2,200,150 |   |  			
            | 4/3/2018 | 0.00 / 0.00% | 31.00 | 31.00 | 30.70 | 30.85 | 30.80 | 15.06 | 1,069,050 |   |  
            | 4/2/2018 | +0.05 / +0.16% | 31.00 | 31.00 | 30.80 | 30.85 | 30.84 | 15.06 | 541,780 |   |  			
            | 3/30/2018 | -0.05 / -0.16% | 30.80 | 30.80 | 30.60 | 30.80 | 30.76 | 15.03 | 742,460 |   |  
            | 3/29/2018 | +0.05 / +0.16% | 30.80 | 30.90 | 30.80 | 30.85 | 30.83 | 15.06 | 923,920 |   |  			
            | 3/28/2018 | -0.20 / -0.65% | 31.00 | 31.00 | 30.80 | 30.80 | 30.89 | 15.03 | 519,620 |   |  
            | 3/27/2018 | 0.00 / 0.00% | 30.90 | 31.00 | 30.90 | 31.00 | 30.96 | 15.13 | 396,020 |   |  			
            | 3/26/2018 | 0.00 / 0.00% | 30.90 | 31.00 | 30.80 | 31.00 | 30.97 | 15.13 | 1,343,950 |   |  
            | 3/23/2018 | 0.00 / 0.00% | 30.90 | 31.10 | 30.70 | 31.00 | 30.96 | 15.13 | 1,621,580 |   |  |