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                    Closing price on 6/19/2013
                 |  |  
    
        |           
                
                    | Open | 10.20 |  
                    | High | 10.20 |  
                    | Low | 9.80 |  
                    | Volume | 201,300 |  
                    | Split-adjusted Price | 5.24 |  
                
             | 
 |  SD6 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/19/2013 | -0.50 / -4.85% | 10.20 | 10.20 | 9.80 | 9.80 | 9.95 | 5.24 | 201,300 |   |  
            | 6/18/2013 | +0.10 / +0.98% | 10.20 | 10.30 | 9.70 | 10.30 | 9.87 | 5.51 | 133,540 |   |  			
            | 6/17/2013 | 0.00 / 0.00% | 10.50 | 11.00 | 10.10 | 10.20 | 10.51 | 5.46 | 315,488 |   |  
            | 6/14/2013 | +0.90 / +9.68% | 9.40 | 10.20 | 9.40 | 10.20 | 10.10 | 5.46 | 894,800 |   |  			
            | 6/13/2013 | +0.20 / +2.20% | 9.30 | 9.40 | 9.20 | 9.30 | 9.31 | 4.98 | 165,000 |   |  
            | 6/12/2013 | -0.10 / -1.09% | 9.20 | 9.20 | 9.10 | 9.10 | 9.13 | 4.87 | 86,112 |   |  			
            | 6/11/2013 | -0.10 / -1.08% | 9.30 | 9.40 | 9.10 | 9.20 | 9.20 | 4.92 | 31,870 |   |  
            | 6/10/2013 | 0.00 / 0.00% | 9.30 | 9.40 | 9.20 | 9.30 | 9.29 | 4.98 | 61,450 |   |  			
            | 6/7/2013 | +0.20 / +2.20% | 9.10 | 9.40 | 9.00 | 9.30 | 9.09 | 4.98 | 181,710 |   |  
            | 6/6/2013 | -0.20 / -2.15% | 9.30 | 9.30 | 9.00 | 9.10 | 9.03 | 4.87 | 104,978 |   |  			
            | 6/5/2013 | +0.20 / +2.20% | 9.20 | 9.30 | 9.00 | 9.30 | 9.06 | 4.98 | 128,345 |   |  
            | 6/4/2013 | -0.30 / -3.19% | 9.40 | 9.40 | 9.10 | 9.10 | 9.24 | 4.87 | 25,348 |   |  			
            | 6/3/2013 | 0.00 / 0.00% | 9.30 | 9.40 | 9.30 | 9.40 | 9.36 | 5.03 | 73,600 |   |  
            | 5/31/2013 | -0.10 / -1.05% | 9.50 | 9.50 | 9.40 | 9.40 | 9.43 | 5.03 | 114,080 |   |  			
            | 5/30/2013 | 0.00 / 0.00% | 9.50 | 9.50 | 9.40 | 9.50 | 9.41 | 5.08 | 43,720 |   |  
            | 5/29/2013 | +0.10 / +1.06% | 9.40 | 9.60 | 9.40 | 9.50 | 9.48 | 5.08 | 177,886 |   |  			
            | 5/28/2013 | +0.10 / +1.08% | 9.30 | 9.40 | 9.30 | 9.40 | 9.32 | 5.03 | 85,160 |   |  
            | 5/27/2013 | +0.20 / +2.20% | 9.20 | 9.30 | 9.20 | 9.30 | 9.23 | 4.98 | 111,600 |   |  			
            | 5/24/2013 | 0.00 / 0.00% | 9.10 | 9.20 | 9.00 | 9.10 | 9.10 | 4.87 | 81,822 |   |  
            | 5/23/2013 | +0.10 / +1.11% | 9.00 | 9.20 | 9.00 | 9.10 | 9.10 | 4.87 | 89,670 |   |  			
            | 5/22/2013 | +0.10 / +1.12% | 9.00 | 9.10 | 9.00 | 9.00 | 9.00 | 4.82 | 59,400 |   |  
            | 5/21/2013 | -0.10 / -1.11% | 9.00 | 9.10 | 8.90 | 8.90 | 8.99 | 4.76 | 60,221 |   |  			
            | 5/20/2013 | +0.10 / +1.12% | 8.90 | 9.00 | 8.90 | 9.00 | 8.97 | 4.82 | 60,226 |   |  
            | 5/17/2013 | 0.00 / 0.00% | 8.80 | 8.90 | 8.80 | 8.90 | 8.81 | 4.76 | 74,160 |   |  			
            | 5/16/2013 | -0.10 / -1.11% | 8.90 | 9.00 | 8.90 | 8.90 | 8.91 | 4.76 | 29,300 |   |  
            | 5/15/2013 | +0.10 / +1.12% | 8.80 | 9.00 | 8.80 | 9.00 | 8.88 | 4.82 | 5,700 |   |  			
            | 5/14/2013 | +0.10 / +1.14% | 8.90 | 8.90 | 8.80 | 8.90 | 8.88 | 4.76 | 64,890 |   |  
            | 5/13/2013 | -0.20 / -2.22% | 8.90 | 9.00 | 8.80 | 8.80 | 8.93 | 4.71 | 27,956 |   |  			
            | 5/10/2013 | 0.00 / 0.00% | 8.90 | 9.00 | 8.90 | 9.00 | 8.95 | 4.82 | 10,250 |   |  
            | 5/9/2013 | 0.00 / 0.00% | 9.00 | 9.00 | 8.90 | 9.00 | 8.91 | 4.82 | 17,950 |   |  |