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                    Closing price on 11/30/2012
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                    | Open | 5.20 |  
                    | High | 5.40 |  
                    | Low | 5.20 |  
                    | Volume | 7,220 |  
                    | Split-adjusted Price | 2.78 |  
                
             | 
 |  SD6 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/30/2012 | -0.20 / -3.70% | 5.20 | 5.40 | 5.20 | 5.20 | 5.33 | 2.78 | 7,220 |   |  
            | 11/29/2012 | 0.00 / 0.00% | 5.40 | 5.40 | 5.30 | 5.40 | 5.33 | 2.89 | 6,100 |   |  			
            | 11/28/2012 | 0.00 / 0.00% | 5.30 | 5.40 | 5.30 | 5.40 | 5.31 | 2.89 | 7,020 |   |  
            | 11/27/2012 | +0.10 / +1.89% | 5.30 | 5.40 | 5.30 | 5.40 | 5.31 | 2.89 | 700 |   |  			
            | 11/26/2012 | -0.20 / -3.64% | 5.30 | 5.40 | 5.30 | 5.30 | 5.30 | 2.84 | 9,200 |   |  
            | 11/23/2012 | +0.10 / +1.85% | 5.20 | 5.60 | 5.20 | 5.50 | 5.40 | 2.94 | 27,243 |   |  			
            | 11/22/2012 | 0.00 / 0.00% | 5.20 | 5.40 | 5.20 | 5.40 | 5.36 | 2.89 | 5,600 |   |  
            | 11/21/2012 | -0.10 / -1.82% | 5.40 | 5.40 | 5.30 | 5.40 | 5.34 | 2.89 | 4,400 |   |  			
            | 11/20/2012 | +0.10 / +1.85% | 5.40 | 5.50 | 5.30 | 5.50 | 5.40 | 2.94 | 59,500 |   |  
            | 11/19/2012 | +0.10 / +1.89% | 5.40 | 5.40 | 5.20 | 5.40 | 5.28 | 2.89 | 14,231 |   |  			
            | 11/16/2012 | 0.00 / 0.00% | 5.20 | 5.30 | 5.20 | 5.30 | 5.27 | 2.84 | 5,500 |   |  
            | 11/15/2012 | +0.10 / +1.92% | 5.10 | 5.30 | 5.10 | 5.30 | 5.20 | 2.84 | 24,900 |   |  			
            | 11/14/2012 | 0.00 / 0.00% | 5.20 | 5.20 | 5.10 | 5.20 | 5.19 | 2.78 | 33,530 |   |  
            | 11/13/2012 | -0.20 / -3.70% | 5.40 | 5.40 | 5.20 | 5.20 | 5.40 | 2.78 | 94,700 |   |  			
            | 11/12/2012 | 0.00 / 0.00% | 5.30 | 5.40 | 5.30 | 5.40 | 5.30 | 2.89 | 9,100 |   |  
            | 11/9/2012 | 0.00 / 0.00% | 5.40 | 5.40 | 5.20 | 5.40 | 5.31 | 2.89 | 13,200 |   |  			
            | 11/8/2012 | -0.10 / -1.82% | 5.20 | 5.40 | 5.20 | 5.40 | 5.20 | 2.89 | 10,000 |   |  
            | 11/7/2012 | +0.30 / +5.77% | 5.20 | 5.50 | 5.20 | 5.50 | 5.37 | 2.94 | 42,500 |   |  			
            | 11/6/2012 | +0.10 / +1.96% | 5.10 | 5.20 | 5.10 | 5.20 | 5.15 | 2.78 | 33,800 |   |  
            | 11/5/2012 | +0.10 / +2.00% | 4.90 | 5.10 | 4.90 | 5.10 | 4.99 | 2.73 | 18,900 |   |  			
            | 11/2/2012 | -0.30 / -5.66% | 5.10 | 5.10 | 5.00 | 5.00 | 5.04 | 2.68 | 38,200 |   |  
            | 11/1/2012 | 0.00 / 0.00% | 5.30 | 5.30 | 5.20 | 5.30 | 5.24 | 2.84 | 6,000 |   |  			
            | 10/31/2012 | -0.10 / -1.85% | 5.20 | 5.30 | 5.10 | 5.30 | 5.13 | 2.84 | 19,000 |   |  
            | 10/30/2012 | 0.00 / 0.00% | 5.40 | 5.40 | 5.30 | 5.40 | 5.36 | 2.89 | 1,640 |   |  			
            | 10/29/2012 | -0.10 / -1.82% | 5.40 | 5.40 | 5.30 | 5.40 | 5.40 | 2.89 | 9,100 |   |  
            | 10/26/2012 | +0.20 / +3.77% | 5.40 | 5.50 | 5.40 | 5.50 | 5.41 | 2.94 | 5,000 |   |  			
            | 10/25/2012 | 0.00 / 0.00% | 5.50 | 5.50 | 5.30 | 5.30 | 5.40 | 2.84 | 34,900 |   |  
            | 10/24/2012 | +0.20 / +3.92% | 5.20 | 5.30 | 5.20 | 5.30 | 5.23 | 2.84 | 18,900 |   |  			
            | 10/23/2012 | +0.10 / +2.00% | 4.90 | 5.20 | 4.90 | 5.10 | 5.05 | 2.73 | 10,200 |   |  
            | 10/22/2012 | -0.30 / -5.66% | 5.10 | 5.10 | 5.00 | 5.00 | 5.07 | 2.68 | 15,400 |   |  |