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                    Closing price on 11/20/2013
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        |           
                
                    | Open | 12.70 |  
                    | High | 12.80 |  
                    | Low | 12.50 |  
                    | Volume | 211,400 |  
                    | Split-adjusted Price | 8.02 |  
                
             | 
 |  SD6 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/20/2013 | +0.10 / +0.79% | 12.70 | 12.80 | 12.50 | 12.80 | 12.59 | 8.02 | 211,400 |   |  
            | 11/19/2013 | -0.20 / -1.55% | 12.70 | 12.80 | 12.50 | 12.70 | 12.65 | 7.95 | 243,112 |   |  			
            | 11/18/2013 | -0.10 / -0.77% | 13.20 | 13.20 | 12.90 | 12.90 | 12.98 | 8.08 | 227,298 |   |  
            | 11/15/2013 | +0.10 / +0.78% | 12.70 | 13.00 | 12.60 | 13.00 | 12.83 | 8.14 | 192,029 |   |  			
            | 11/14/2013 | +0.20 / +1.57% | 12.80 | 12.90 | 12.60 | 12.90 | 12.79 | 8.08 | 142,252 |   |  
            | 11/13/2013 | +0.30 / +2.42% | 12.50 | 12.90 | 12.30 | 12.70 | 12.64 | 7.95 | 374,155 |   |  			
            | 11/12/2013 | 0.00 / 0.00% | 12.50 | 12.80 | 12.20 | 12.40 | 12.53 | 7.77 | 395,900 |   |  
            | 11/11/2013 | +0.30 / +2.48% | 12.20 | 12.40 | 11.90 | 12.40 | 12.12 | 7.77 | 207,850 |   |  			
            | 11/8/2013 | -0.10 / -0.82% | 12.20 | 12.30 | 12.00 | 12.10 | 12.14 | 7.58 | 187,884 |   |  
            | 11/7/2013 | +0.20 / +1.67% | 12.00 | 13.20 | 11.90 | 12.20 | 12.55 | 7.64 | 533,231 |   |  			
            | 11/6/2013 | 0.00 / 0.00% | 12.00 | 12.10 | 11.60 | 12.00 | 11.85 | 7.52 | 265,818 |   |  
            | 11/5/2013 | +0.40 / +3.45% | 11.80 | 12.20 | 11.80 | 12.00 | 12.01 | 7.52 | 490,880 |   |  			
            | 11/4/2013 | +1.00 / +9.43% | 10.70 | 11.60 | 10.60 | 11.60 | 11.41 | 7.27 | 831,900 |   |  
            | 11/1/2013 | +0.30 / +2.91% | 10.20 | 10.70 | 10.20 | 10.60 | 10.52 | 6.64 | 306,640 |   |  			
            | 10/31/2013 | 0.00 / 0.00% | 10.10 | 10.30 | 10.10 | 10.30 | 10.21 | 6.45 | 123,621 |   |  
            | 10/30/2013 | +0.40 / +4.04% | 10.00 | 10.30 | 10.00 | 10.30 | 10.15 | 6.45 | 95,420 |   |  			
            | 10/29/2013 | -0.10 / -1.00% | 10.00 | 10.10 | 9.90 | 9.90 | 9.93 | 6.20 | 52,550 |   |  
            | 10/28/2013 | 0.00 / 0.00% | 10.00 | 10.10 | 9.90 | 10.00 | 9.98 | 6.26 | 106,256 |   |  			
            | 10/25/2013 | -0.10 / -0.99% | 10.30 | 10.30 | 10.00 | 10.00 | 10.09 | 6.26 | 117,350 |   |  
            | 10/24/2013 | +0.50 / +5.21% | 9.80 | 10.40 | 9.80 | 10.10 | 10.18 | 6.33 | 517,670 |   |  			
            | 10/23/2013 | +0.20 / +2.13% | 9.70 | 9.70 | 9.50 | 9.60 | 9.52 | 6.01 | 61,000 |   |  
            | 10/22/2013 | -0.20 / -2.08% | 9.70 | 9.70 | 9.40 | 9.40 | 9.53 | 5.89 | 116,550 |   |  			
            | 10/21/2013 | +0.20 / +2.13% | 9.50 | 9.80 | 9.50 | 9.60 | 9.68 | 6.01 | 263,500 |   |  
            | 10/18/2013 | 0.00 / 0.00% | 9.30 | 9.50 | 9.30 | 9.40 | 9.43 | 5.89 | 121,500 |   |  			
            | 10/17/2013 | -0.10 / -1.05% | 9.50 | 9.70 | 9.40 | 9.40 | 9.49 | 5.89 | 160,100 |   |  
            | 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 |   |  |