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                    Closing price on 2/14/2014
                 |  |  
    
        |           
                
                    | Open | 13.10 |  
                    | High | 13.20 |  
                    | Low | 12.90 |  
                    | Volume | 392,150 |  
                    | Split-adjusted Price | 9.21 |  
                
             | 
 |  SD6 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  			
            | 1/22/2014 | -0.40 / -3.15% | 12.70 | 12.70 | 12.30 | 12.30 | 12.46 | 8.59 | 164,012 |   |  
            | 1/21/2014 | +0.10 / +0.79% | 12.50 | 12.70 | 12.20 | 12.70 | 12.49 | 8.87 | 76,642 |   |  			
            | 1/20/2014 | -0.30 / -2.33% | 12.90 | 12.90 | 12.30 | 12.60 | 12.58 | 8.80 | 141,200 |   |  
            | 1/17/2014 | -0.10 / -0.77% | 13.10 | 13.20 | 12.80 | 12.90 | 12.92 | 9.01 | 166,200 |   |  			
            | 1/16/2014 | -0.20 / -1.52% | 13.20 | 13.50 | 12.90 | 13.00 | 13.15 | 9.08 | 157,500 |   |  
            | 1/15/2014 | -0.40 / -2.94% | 13.60 | 13.90 | 13.20 | 13.20 | 13.58 | 9.21 | 169,040 |   |  			
            | 1/14/2014 | +0.10 / +0.74% | 13.50 | 13.90 | 13.50 | 13.60 | 13.68 | 9.49 | 237,255 |   |  
            | 1/13/2014 | +0.30 / +2.27% | 13.10 | 13.50 | 13.10 | 13.50 | 13.43 | 9.42 | 234,200 |   |  			
            | 1/10/2014 | +0.40 / +3.13% | 12.80 | 13.40 | 12.80 | 13.20 | 13.13 | 9.21 | 242,100 |   |  
            | 1/9/2014 | 0.00 / 0.00% | 12.60 | 12.80 | 12.60 | 12.80 | 12.75 | 8.94 | 151,512 |   |  			
            | 1/8/2014 | 0.00 / 0.00% | 12.90 | 12.90 | 12.60 | 12.80 | 12.69 | 8.94 | 80,745 |   |  
            | 1/7/2014 | -0.10 / -0.78% | 13.20 | 13.20 | 12.70 | 12.80 | 12.86 | 8.94 | 100,240 |   |  			
            | 1/6/2014 | +0.50 / +4.03% | 12.40 | 13.00 | 12.40 | 12.90 | 12.76 | 9.01 | 179,151 |   |  
            | 1/3/2014 | -0.10 / -0.80% | 12.40 | 12.50 | 12.20 | 12.40 | 12.37 | 8.66 | 51,115 |   |  			
            | 1/2/2014 | +0.20 / +1.63% | 12.80 | 12.80 | 12.40 | 12.50 | 12.46 | 8.73 | 36,049 |   |  
            | 12/31/2013 | +0.20 / +1.65% | 12.10 | 12.50 | 11.90 | 12.30 | 12.14 | 8.59 | 165,366 |   |  			
            | 12/30/2013 | -0.80 / -6.20% | 12.70 | 12.70 | 12.10 | 12.10 | 12.41 | 8.45 | 323,200 |   |  
            | 12/27/2013 | -0.30 / -2.27% | 13.30 | 13.30 | 12.90 | 12.90 | 13.11 | 9.01 | 156,900 |   |  			
            | 12/26/2013 | -1.40 / -9.59% | 13.50 | 13.90 | 13.10 | 13.20 | 13.25 | 9.21 | 172,958 |   |  
            | 12/25/2013 | -0.20 / -1.35% | 14.60 | 14.80 | 14.50 | 14.60 | 14.58 | 9.15 | 217,400 |   |  |