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                    Closing price on 3/14/2014
                 |  |  
    
        |           
                
                    | Open | 14.80 |  
                    | High | 15.30 |  
                    | Low | 14.70 |  
                    | Volume | 394,125 |  
                    | Split-adjusted Price | 10.26 |  
                
             | 
 |  SD6 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/14/2014 | -0.20 / -1.34% | 14.80 | 15.30 | 14.70 | 14.70 | 14.90 | 10.26 | 394,125 |   |  
            | 3/13/2014 | 0.00 / 0.00% | 14.80 | 14.90 | 14.60 | 14.90 | 14.66 | 10.40 | 177,012 |   |  			
            | 3/12/2014 | -0.30 / -1.97% | 15.30 | 15.30 | 14.80 | 14.90 | 15.01 | 10.40 | 202,220 |   |  
            | 3/11/2014 | +0.60 / +4.11% | 15.00 | 15.40 | 14.80 | 15.20 | 15.08 | 10.61 | 527,397 |   |  			
            | 3/10/2014 | +0.40 / +2.82% | 14.20 | 14.60 | 14.20 | 14.60 | 14.38 | 10.19 | 230,566 |   |  
            | 3/7/2014 | 0.00 / 0.00% | 14.40 | 14.40 | 14.20 | 14.20 | 14.24 | 9.91 | 159,500 |   |  			
            | 3/6/2014 | 0.00 / 0.00% | 14.10 | 14.20 | 14.00 | 14.20 | 14.10 | 9.91 | 82,720 |   |  
            | 3/5/2014 | +0.20 / +1.43% | 14.20 | 14.30 | 14.00 | 14.20 | 14.10 | 9.91 | 69,800 |   |  			
            | 3/4/2014 | 0.00 / 0.00% | 13.90 | 14.20 | 13.80 | 14.00 | 13.92 | 9.77 | 127,100 |   |  
            | 3/3/2014 | -0.40 / -2.78% | 14.20 | 14.40 | 14.00 | 14.00 | 14.12 | 9.77 | 201,786 |   |  			
            | 2/28/2014 | +0.10 / +0.70% | 14.50 | 14.50 | 14.00 | 14.40 | 14.21 | 10.05 | 245,720 |   |  
            | 2/27/2014 | -0.30 / -2.05% | 14.60 | 14.70 | 14.30 | 14.30 | 14.47 | 9.98 | 306,360 |   |  			
            | 2/26/2014 | -0.10 / -0.68% | 14.90 | 15.00 | 14.30 | 14.60 | 14.50 | 10.19 | 261,801 |   |  
            | 2/25/2014 | +0.10 / +0.68% | 14.60 | 14.90 | 14.50 | 14.70 | 14.65 | 10.26 | 213,354 |   |  			
            | 2/24/2014 | +0.40 / +2.82% | 14.20 | 14.70 | 14.20 | 14.60 | 14.44 | 10.19 | 117,948 |   |  
            | 2/21/2014 | +0.10 / +0.71% | 14.20 | 14.40 | 13.70 | 14.20 | 14.12 | 9.91 | 205,540 |   |  			
            | 2/20/2014 | -1.10 / -7.24% | 15.20 | 15.50 | 13.90 | 14.10 | 14.66 | 9.84 | 907,486 |   |  
            | 2/19/2014 | +0.40 / +2.70% | 14.80 | 15.40 | 14.60 | 15.20 | 14.90 | 10.61 | 584,546 |   |  			
            | 2/18/2014 | +0.30 / +2.07% | 14.50 | 15.30 | 14.50 | 14.80 | 14.98 | 10.33 | 475,870 |   |  
            | 2/17/2014 | +1.30 / +9.85% | 13.00 | 14.50 | 13.00 | 14.50 | 14.03 | 10.12 | 1,031,244 |   |  			
            | 2/14/2014 | +0.10 / +0.76% | 13.10 | 13.20 | 12.90 | 13.20 | 13.02 | 9.21 | 392,150 |   |  
            | 2/13/2014 | -0.20 / -1.50% | 13.30 | 13.40 | 13.00 | 13.10 | 13.13 | 9.15 | 195,300 |   |  			
            | 2/12/2014 | +0.60 / +4.72% | 12.90 | 13.30 | 12.90 | 13.30 | 13.09 | 9.28 | 232,930 |   |  
            | 2/11/2014 | -0.70 / -5.22% | 13.50 | 13.80 | 12.70 | 12.70 | 13.36 | 8.87 | 312,424 |   |  			
            | 2/10/2014 | +0.70 / +5.51% | 12.70 | 13.40 | 12.70 | 13.40 | 13.00 | 9.35 | 260,110 |   |  
            | 2/7/2014 | +0.10 / +0.79% | 12.60 | 12.90 | 12.60 | 12.70 | 12.73 | 8.87 | 198,020 |   |  			
            | 2/6/2014 | +0.40 / +3.28% | 12.30 | 12.80 | 12.30 | 12.60 | 12.45 | 8.80 | 77,923 |   |  
            | 1/27/2014 | -0.40 / -3.17% | 12.60 | 12.90 | 12.20 | 12.20 | 12.34 | 8.52 | 89,600 |   |  			
            | 1/24/2014 | +0.20 / +1.61% | 12.40 | 12.60 | 12.40 | 12.60 | 12.49 | 8.80 | 60,686 |   |  
            | 1/23/2014 | +0.10 / +0.81% | 12.30 | 12.50 | 12.30 | 12.40 | 12.38 | 8.66 | 72,700 |   |  |