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                    Closing price on 12/12/2013
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        |           
                
                    | Open | 13.20 |  
                    | High | 13.40 |  
                    | Low | 12.80 |  
                    | Volume | 347,020 |  
                    | Split-adjusted Price | 8.39 |  
                
             | 
 |  SD6 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 12/5/2013 | 0.00 / 0.00% | 13.10 | 13.10 | 12.90 | 13.00 | 12.96 | 8.14 | 193,000 |   |  			
            | 12/4/2013 | +0.40 / +3.17% | 12.60 | 13.10 | 12.60 | 13.00 | 12.88 | 8.14 | 614,715 |   |  
            | 12/3/2013 | +0.20 / +1.61% | 12.40 | 12.60 | 12.30 | 12.60 | 12.55 | 7.89 | 186,480 |   |  			
            | 12/2/2013 | 0.00 / 0.00% | 12.40 | 12.50 | 12.40 | 12.40 | 12.45 | 7.77 | 89,700 |   |  
            | 11/29/2013 | +0.10 / +0.81% | 12.60 | 12.60 | 12.30 | 12.40 | 12.35 | 7.77 | 119,512 |   |  			
            | 11/28/2013 | -0.30 / -2.38% | 12.50 | 12.60 | 12.30 | 12.30 | 12.37 | 7.70 | 183,892 |   |  
            | 11/27/2013 | +0.30 / +2.44% | 12.30 | 12.80 | 12.30 | 12.60 | 12.51 | 7.89 | 285,922 |   |  			
            | 11/26/2013 | -0.20 / -1.60% | 12.30 | 12.50 | 12.30 | 12.30 | 12.34 | 7.70 | 154,060 |   |  
            | 11/25/2013 | +0.10 / +0.81% | 12.50 | 12.50 | 12.20 | 12.50 | 12.39 | 7.83 | 75,242 |   |  			
            | 11/22/2013 | +0.10 / +0.81% | 12.30 | 12.50 | 12.10 | 12.40 | 12.28 | 7.77 | 277,312 |   |  
            | 11/21/2013 | -0.50 / -3.91% | 12.60 | 12.90 | 12.30 | 12.30 | 12.61 | 7.70 | 393,007 |   |  			
            | 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 |   |  |