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            | 
                    Closing price on 6/1/2016
                 |  |  
    
        |           
                
                    | Open | 5.20 |  
                    | High | 5.20 |  
                    | Low | 5.10 |  
                    | Volume | 36,200 |  
                    | Split-adjusted Price | 5.20 |  
                
             | 
 |  WSS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/1/2016 | -0.10 / -1.89% | 5.20 | 5.20 | 5.10 | 5.20 | 5.18 | 5.20 | 36,200 |   |  
            | 5/31/2016 | 0.00 / 0.00% | 5.20 | 5.30 | 5.20 | 5.30 | 5.20 | 5.30 | 73,100 |   |  			
            | 5/30/2016 | +0.10 / +1.92% | 5.30 | 5.30 | 5.20 | 5.30 | 5.24 | 5.30 | 13,100 |   |  
            | 5/27/2016 | 0.00 / 0.00% | 5.20 | 5.30 | 5.20 | 5.20 | 5.20 | 5.20 | 26,500 |   |  			
            | 5/26/2016 | 0.00 / 0.00% | 5.20 | 5.30 | 5.20 | 5.20 | 5.20 | 5.20 | 69,800 |   |  
            | 5/25/2016 | -0.10 / -1.89% | 5.30 | 5.30 | 5.10 | 5.20 | 5.19 | 5.20 | 116,700 |   |  			
            | 5/24/2016 | 0.00 / 0.00% | 5.40 | 5.40 | 5.30 | 5.30 | 5.30 | 5.30 | 31,300 |   |  
            | 5/23/2016 | -0.10 / -1.85% | 5.30 | 5.30 | 5.20 | 5.30 | 5.23 | 5.30 | 1,182,900 |   |  			
            | 5/20/2016 | 0.00 / 0.00% | 5.30 | 5.40 | 5.30 | 5.40 | 5.30 | 5.40 | 2,284,610 |   |  
            | 5/19/2016 | -0.10 / -1.82% | 5.40 | 5.40 | 5.30 | 5.40 | 5.38 | 5.40 | 217,200 |   |  			
            | 5/18/2016 | +0.10 / +1.85% | 5.40 | 5.50 | 5.30 | 5.50 | 5.40 | 5.50 | 139,400 |   |  
            | 5/17/2016 | -0.10 / -1.82% | 5.40 | 5.50 | 5.40 | 5.40 | 5.50 | 5.40 | 133,800 |   |  			
            | 5/16/2016 | +0.10 / +1.85% | 5.30 | 5.50 | 5.30 | 5.50 | 5.40 | 5.50 | 128,000 |   |  
            | 5/13/2016 | -0.10 / -1.82% | 5.40 | 5.40 | 5.30 | 5.40 | 5.39 | 5.40 | 81,000 |   |  			
            | 5/12/2016 | +0.10 / +1.85% | 5.40 | 5.50 | 5.30 | 5.50 | 5.40 | 5.50 | 90,300 |   |  
            | 5/11/2016 | 0.00 / 0.00% | 5.40 | 5.40 | 5.40 | 5.40 | 5.40 | 5.40 | 100,800 |   |  			
            | 5/10/2016 | 0.00 / 0.00% | 5.30 | 5.40 | 5.20 | 5.40 | 5.27 | 5.40 | 103,000 |   |  
            | 5/9/2016 | 0.00 / 0.00% | 5.40 | 5.50 | 5.30 | 5.40 | 5.38 | 5.40 | 73,400 |   |  			
            | 5/6/2016 | 0.00 / 0.00% | 5.40 | 5.50 | 5.30 | 5.40 | 5.38 | 5.40 | 92,400 |   |  
            | 5/5/2016 | -0.20 / -3.57% | 5.60 | 5.60 | 5.30 | 5.40 | 5.38 | 5.40 | 112,600 |   |  			
            | 5/4/2016 | -0.10 / -1.75% | 5.60 | 5.70 | 5.50 | 5.60 | 5.60 | 5.60 | 105,100 |   |  
            | 4/29/2016 | +0.10 / +1.79% | 5.50 | 5.70 | 5.50 | 5.70 | 5.58 | 5.70 | 898,900 |   |  			
            | 4/28/2016 | +0.10 / +1.82% | 5.50 | 5.70 | 5.50 | 5.60 | 5.51 | 5.60 | 1,759,600 |   |  
            | 4/27/2016 | -0.30 / -5.17% | 5.70 | 5.70 | 5.50 | 5.50 | 5.63 | 5.50 | 107,200 |   |  			
            | 4/26/2016 | 0.00 / 0.00% | 5.80 | 5.80 | 5.70 | 5.80 | 5.72 | 5.80 | 106,100 |   |  
            | 4/25/2016 | +0.10 / +1.75% | 5.70 | 5.80 | 5.70 | 5.80 | 5.72 | 5.80 | 92,900 |   |  			
            | 4/22/2016 | +0.20 / +3.64% | 5.60 | 5.70 | 5.50 | 5.70 | 5.60 | 5.70 | 129,300 |   |  
            | 4/21/2016 | -0.20 / -3.51% | 5.70 | 5.70 | 5.50 | 5.50 | 5.62 | 5.50 | 159,700 |   |  			
            | 4/20/2016 | -0.10 / -1.72% | 5.70 | 5.70 | 5.70 | 5.70 | 5.70 | 5.70 | 48,500 |   |  
            | 4/19/2016 | 0.00 / 0.00% | 5.80 | 5.80 | 5.70 | 5.80 | 5.75 | 5.80 | 160,400 |   |  |