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            | 
                    Closing price on 9/25/2015
                 |  |  
    
        |           
                
                    | Open | 19.40 |  
                    | High | 19.40 |  
                    | Low | 19.10 |  
                    | Volume | 57,287 |  
                    | Split-adjusted Price | 9.03 |  
                
             | 
 |  PGS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/25/2015 | -0.30 / -1.54% | 19.40 | 19.40 | 19.10 | 19.20 | 19.22 | 9.03 | 57,287 |   |  
            | 9/24/2015 | -0.20 / -1.02% | 19.70 | 19.80 | 19.40 | 19.50 | 19.57 | 9.18 | 127,900 |   |  			
            | 9/23/2015 | +0.40 / +2.07% | 19.20 | 19.70 | 19.20 | 19.70 | 19.34 | 9.27 | 143,400 |   |  
            | 9/22/2015 | +0.30 / +1.58% | 19.50 | 19.50 | 19.20 | 19.30 | 19.34 | 9.08 | 163,550 |   |  			
            | 9/21/2015 | 0.00 / 0.00% | 19.10 | 19.10 | 18.90 | 19.00 | 18.99 | 8.94 | 77,428 |   |  
            | 9/18/2015 | +0.40 / +2.15% | 18.90 | 19.00 | 18.70 | 19.00 | 18.94 | 8.94 | 197,237 |   |  			
            | 9/17/2015 | +0.10 / +0.54% | 18.60 | 18.70 | 18.50 | 18.60 | 18.62 | 8.75 | 227,206 |   |  
            | 9/16/2015 | 0.00 / 0.00% | 18.50 | 18.50 | 18.40 | 18.50 | 18.44 | 8.70 | 64,319 |   |  			
            | 9/15/2015 | -0.10 / -0.54% | 16.80 | 18.70 | 16.80 | 18.50 | 18.53 | 8.70 | 81,600 |   |  
            | 9/14/2015 | -0.20 / -1.06% | 18.70 | 18.70 | 18.50 | 18.60 | 18.60 | 8.75 | 69,547 |   |  			
            | 9/11/2015 | 0.00 / 0.00% | 18.80 | 18.80 | 18.70 | 18.80 | 18.79 | 8.85 | 25,272 |   |  
            | 9/10/2015 | -0.10 / -0.53% | 18.70 | 18.90 | 18.70 | 18.80 | 18.86 | 8.85 | 46,070 |   |  			
            | 9/9/2015 | +0.30 / +1.61% | 18.90 | 19.10 | 18.80 | 18.90 | 18.97 | 8.89 | 146,394 |   |  
            | 9/8/2015 | 0.00 / 0.00% | 18.50 | 19.00 | 18.50 | 18.60 | 18.82 | 8.75 | 89,659 |   |  			
            | 9/7/2015 | 0.00 / 0.00% | 18.80 | 18.80 | 18.60 | 18.60 | 18.67 | 8.75 | 102,094 |   |  
            | 9/4/2015 | -0.10 / -0.53% | 18.10 | 19.00 | 18.10 | 18.60 | 18.94 | 8.75 | 110,460 |   |  			
            | 9/3/2015 | -0.50 / -2.60% | 18.80 | 18.90 | 18.40 | 18.70 | 18.59 | 8.80 | 271,985 |   |  
            | 9/1/2015 | 0.00 / 0.00% | 19.60 | 19.60 | 18.90 | 19.20 | 19.14 | 9.03 | 145,115 |   |  			
            | 8/31/2015 | -0.50 / -2.54% | 19.70 | 19.70 | 19.10 | 19.20 | 19.25 | 9.03 | 100,627 |   |  
            | 8/28/2015 | -0.20 / -1.01% | 20.20 | 20.30 | 19.70 | 19.70 | 19.97 | 9.27 | 216,651 |   |  			
            | 8/27/2015 | 0.00 / 0.00% | 20.10 | 20.60 | 19.70 | 19.90 | 20.18 | 9.36 | 196,668 |   |  
            | 8/26/2015 | +0.90 / +4.74% | 19.10 | 20.10 | 19.10 | 19.90 | 19.57 | 9.36 | 330,994 |   |  			
            | 8/25/2015 | +1.10 / +6.15% | 17.30 | 19.00 | 17.00 | 19.00 | 18.31 | 8.94 | 297,561 |   |  
            | 8/24/2015 | -1.30 / -6.77% | 18.90 | 18.90 | 17.40 | 17.90 | 18.21 | 8.42 | 420,806 |   |  			
            | 8/21/2015 | -0.70 / -3.52% | 19.50 | 19.60 | 18.00 | 19.20 | 18.88 | 9.03 | 293,623 |   |  
            | 8/20/2015 | 0.00 / 0.00% | 19.90 | 19.90 | 19.50 | 19.90 | 19.77 | 9.36 | 221,472 |   |  			
            | 8/19/2015 | 0.00 / 0.00% | 19.80 | 20.10 | 19.80 | 19.90 | 19.94 | 9.36 | 101,860 |   |  
            | 8/18/2015 | +0.40 / +2.05% | 19.50 | 20.10 | 19.50 | 19.90 | 19.73 | 9.36 | 122,619 |   |  			
            | 8/17/2015 | -0.70 / -3.47% | 20.10 | 20.20 | 19.40 | 19.50 | 19.75 | 9.18 | 216,593 |   |  
            | 8/14/2015 | -0.30 / -1.46% | 20.40 | 20.60 | 19.90 | 20.20 | 20.14 | 9.50 | 155,252 |   |  |