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            | 
                    Closing price on 1/17/2014
                 |  |  
    
        |           
                
                    | Open | 13.10 |  
                    | High | 13.20 |  
                    | Low | 12.80 |  
                    | Volume | 166,200 |  
                    | Split-adjusted Price | 9.01 |  
                
             | 
 |  SD6 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 12/24/2013 | 0.00 / 0.00% | 14.70 | 14.80 | 14.60 | 14.80 | 14.70 | 9.27 | 205,010 |   |  			
            | 12/23/2013 | +0.20 / +1.37% | 14.60 | 14.90 | 14.60 | 14.80 | 14.73 | 9.27 | 235,620 |   |  
            | 12/20/2013 | -0.40 / -2.67% | 15.10 | 15.20 | 14.60 | 14.60 | 14.86 | 9.15 | 222,600 |   |  			
            | 12/19/2013 | +0.10 / +0.67% | 15.00 | 15.20 | 14.90 | 15.00 | 15.07 | 9.40 | 335,700 |   |  
            | 12/18/2013 | -0.20 / -1.32% | 14.90 | 15.00 | 14.60 | 14.90 | 14.78 | 9.33 | 222,107 |   |  			
            | 12/17/2013 | -0.10 / -0.66% | 15.40 | 15.50 | 14.80 | 15.10 | 15.19 | 9.46 | 237,212 |   |  
            | 12/16/2013 | +1.10 / +7.80% | 14.20 | 15.30 | 14.20 | 15.20 | 14.74 | 9.52 | 634,564 |   |  			
            | 12/13/2013 | +0.70 / +5.22% | 13.30 | 14.20 | 13.30 | 14.10 | 13.87 | 8.83 | 751,551 |   |  
            | 12/12/2013 | +0.10 / +0.75% | 13.20 | 13.40 | 12.80 | 13.40 | 13.07 | 8.39 | 347,020 |   |  			
            | 12/11/2013 | -0.10 / -0.75% | 13.40 | 13.60 | 12.80 | 13.30 | 13.20 | 8.33 | 501,170 |   |  
            | 12/10/2013 | -0.30 / -2.19% | 13.80 | 13.90 | 13.40 | 13.40 | 13.53 | 8.39 | 213,016 |   |  			
            | 12/9/2013 | +0.50 / +3.79% | 13.30 | 13.70 | 13.30 | 13.70 | 13.51 | 8.58 | 358,410 |   |  
            | 12/6/2013 | +0.20 / +1.54% | 13.00 | 13.20 | 12.80 | 13.20 | 13.07 | 8.27 | 213,100 |   |  |