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                    Closing price on 10/16/2013
                 |  |  
    
        |           
                
                    | Open | 9.20 |  
                    | High | 9.60 |  
                    | Low | 9.20 |  
                    | Volume | 81,500 |  
                    | Split-adjusted Price | 5.95 |  
                
             | 
 |  SD6 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 10/16/2013 | +0.20 / +2.15% | 9.20 | 9.60 | 9.20 | 9.50 | 9.39 | 5.95 | 81,500 |   |  
            | 10/15/2013 | +0.40 / +4.49% | 9.10 | 9.50 | 9.10 | 9.30 | 9.36 | 5.83 | 169,310 |   |  			
            | 10/14/2013 | -0.20 / -2.20% | 9.00 | 9.20 | 8.90 | 8.90 | 9.00 | 5.57 | 105,792 |   |  
            | 10/11/2013 | -0.10 / -1.09% | 9.20 | 9.40 | 9.00 | 9.10 | 9.17 | 5.70 | 157,132 |   |  			
            | 10/10/2013 | +0.50 / +5.75% | 8.70 | 9.20 | 8.70 | 9.20 | 9.03 | 5.76 | 430,820 |   |  
            | 10/9/2013 | +0.40 / +4.82% | 8.30 | 8.90 | 8.30 | 8.70 | 8.62 | 5.45 | 154,437 |   |  			
            | 10/8/2013 | -0.10 / -1.19% | 8.30 | 8.40 | 8.20 | 8.30 | 8.32 | 5.20 | 83,200 |   |  
            | 10/7/2013 | +0.20 / +2.44% | 8.20 | 8.40 | 8.20 | 8.40 | 8.28 | 5.26 | 76,018 |   |  			
            | 10/4/2013 | +0.20 / +2.50% | 8.20 | 8.20 | 8.00 | 8.20 | 8.13 | 5.14 | 68,662 |   |  
            | 10/3/2013 | -0.20 / -2.44% | 8.20 | 8.20 | 7.90 | 8.00 | 8.01 | 5.01 | 44,800 |   |  			
            | 10/2/2013 | +0.10 / +1.23% | 8.10 | 8.20 | 8.10 | 8.20 | 8.12 | 5.14 | 20,850 |   |  
            | 10/1/2013 | -0.10 / -1.22% | 8.20 | 8.30 | 8.10 | 8.10 | 8.19 | 5.07 | 68,362 |   |  			
            | 9/30/2013 | +0.20 / +2.50% | 8.10 | 8.20 | 8.10 | 8.20 | 8.14 | 5.14 | 80,000 |   |  
            | 9/27/2013 | -0.20 / -2.44% | 8.20 | 8.20 | 8.00 | 8.00 | 8.07 | 5.01 | 23,800 |   |  			
            | 9/26/2013 | +0.10 / +1.23% | 8.00 | 8.20 | 8.00 | 8.20 | 8.07 | 5.14 | 75,710 |   |  
            | 9/25/2013 | 0.00 / 0.00% | 8.10 | 8.10 | 7.90 | 8.10 | 8.07 | 5.07 | 41,800 |   |  			
            | 9/24/2013 | 0.00 / 0.00% | 8.00 | 8.10 | 8.00 | 8.10 | 8.02 | 5.07 | 36,000 |   |  
            | 9/23/2013 | +0.20 / +2.53% | 7.90 | 8.10 | 7.90 | 8.10 | 7.90 | 5.07 | 17,428 |   |  			
            | 9/20/2013 | 0.00 / 0.00% | 7.90 | 7.90 | 7.80 | 7.90 | 7.87 | 4.95 | 41,610 |   |  
            | 9/19/2013 | +0.20 / +2.60% | 7.80 | 8.00 | 7.80 | 7.90 | 7.90 | 4.95 | 26,538 |   |  			
            | 9/18/2013 | -0.20 / -2.53% | 7.90 | 7.90 | 7.70 | 7.70 | 7.78 | 4.82 | 123,200 |   |  
            | 9/17/2013 | 0.00 / 0.00% | 7.90 | 7.90 | 7.80 | 7.90 | 7.88 | 4.95 | 41,962 |   |  			
            | 9/16/2013 | 0.00 / 0.00% | 8.00 | 8.10 | 7.90 | 7.90 | 8.02 | 4.95 | 63,600 |   |  
            | 9/13/2013 | -0.10 / -1.25% | 7.90 | 8.00 | 7.80 | 7.90 | 7.87 | 4.95 | 44,710 |   |  			
            | 9/12/2013 | 0.00 / 0.00% | 8.00 | 8.00 | 7.90 | 8.00 | 7.91 | 5.01 | 24,200 |   |  
            | 9/11/2013 | -0.10 / -1.23% | 8.00 | 8.10 | 7.90 | 8.00 | 7.96 | 5.01 | 30,500 |   |  			
            | 9/10/2013 | 0.00 / 0.00% | 8.10 | 8.10 | 8.00 | 8.10 | 8.06 | 5.07 | 43,000 |   |  
            | 9/9/2013 | -0.20 / -2.41% | 8.40 | 8.40 | 8.10 | 8.10 | 8.15 | 5.07 | 24,600 |   |  			
            | 9/6/2013 | +0.10 / +1.22% | 8.20 | 8.30 | 8.00 | 8.30 | 8.16 | 5.20 | 175,300 |   |  
            | 9/5/2013 | -0.10 / -1.20% | 8.10 | 8.20 | 8.10 | 8.20 | 8.20 | 5.14 | 16,510 |   |  |