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            | 
                    Closing price on 2/1/2016
                 |  |  
    
        |           
                
                    | Open | 18.30 |  
                    | High | 18.50 |  
                    | Low | 17.80 |  
                    | Volume | 419,056 |  
                    | Split-adjusted Price | 8.82 |  
                
             | 
 |  PGS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/1/2016 | -0.60 / -3.26% | 18.30 | 18.50 | 17.80 | 17.80 | 18.13 | 8.82 | 419,056 |   |  
            | 1/29/2016 | +0.60 / +3.37% | 18.50 | 18.70 | 17.90 | 18.40 | 18.41 | 9.12 | 500,637 |   |  			
            | 1/28/2016 | +0.10 / +0.56% | 18.30 | 18.70 | 17.80 | 17.80 | 18.15 | 8.82 | 623,284 |   |  
            | 1/27/2016 | +1.60 / +9.94% | 16.20 | 17.70 | 16.20 | 17.70 | 16.95 | 8.77 | 983,844 |   |  			
            | 1/26/2016 | -0.10 / -0.62% | 17.00 | 17.00 | 15.60 | 16.10 | 16.08 | 7.98 | 60,025 |   |  
            | 1/25/2016 | +1.40 / +9.46% | 15.00 | 16.20 | 15.00 | 16.20 | 15.88 | 8.03 | 130,890 |   |  			
            | 1/22/2016 | -0.30 / -1.99% | 14.50 | 15.10 | 14.50 | 14.80 | 14.89 | 7.34 | 43,300 |   |  
            | 1/21/2016 | -0.20 / -1.31% | 15.20 | 15.20 | 14.80 | 15.10 | 15.04 | 7.48 | 21,390 |   |  			
            | 1/20/2016 | 0.00 / 0.00% | 15.10 | 15.30 | 15.00 | 15.30 | 15.30 | 7.58 | 179,200 |   |  
            | 1/19/2016 | +0.30 / +2.00% | 15.20 | 15.30 | 14.60 | 15.30 | 15.15 | 7.58 | 51,589 |   |  			
            | 1/18/2016 | -1.00 / -6.25% | 16.10 | 16.10 | 14.50 | 15.00 | 14.98 | 7.44 | 71,790 |   |  
            | 1/15/2016 | -0.10 / -0.62% | 15.90 | 16.10 | 15.90 | 16.00 | 15.96 | 7.93 | 47,600 |   |  			
            | 1/14/2016 | -0.20 / -1.23% | 16.20 | 16.20 | 16.00 | 16.10 | 16.09 | 7.98 | 51,654 |   |  
            | 1/13/2016 | 0.00 / 0.00% | 16.30 | 16.30 | 16.10 | 16.30 | 16.30 | 8.08 | 38,600 |   |  			
            | 1/12/2016 | +0.10 / +0.62% | 16.20 | 16.30 | 16.10 | 16.30 | 16.22 | 8.08 | 62,542 |   |  
            | 1/11/2016 | 0.00 / 0.00% | 16.20 | 16.40 | 16.10 | 16.20 | 16.29 | 8.03 | 52,201 |   |  			
            | 1/8/2016 | -0.10 / -0.61% | 16.10 | 16.30 | 16.00 | 16.20 | 16.30 | 8.03 | 49,147 |   |  
            | 1/7/2016 | -0.20 / -1.21% | 16.50 | 16.50 | 16.00 | 16.30 | 16.26 | 8.08 | 80,522 |   |  			
            | 1/6/2016 | 0.00 / 0.00% | 16.50 | 16.70 | 16.50 | 16.50 | 16.61 | 8.18 | 66,120 |   |  
            | 1/5/2016 | -0.40 / -2.37% | 16.50 | 16.90 | 16.50 | 16.50 | 16.90 | 8.18 | 66,909 |   |  			
            | 1/4/2016 | -0.60 / -3.43% | 17.00 | 17.00 | 16.80 | 16.90 | 16.94 | 8.38 | 8,285 |   |  
            | 12/31/2015 | +0.80 / +4.79% | 16.70 | 17.50 | 16.60 | 17.50 | 16.70 | 8.67 | 109,355 |   |  			
            | 12/30/2015 | +0.30 / +1.83% | 16.50 | 16.70 | 16.40 | 16.70 | 16.53 | 8.28 | 97,315 |   |  
            | 12/29/2015 | +0.30 / +1.86% | 16.00 | 16.40 | 16.00 | 16.40 | 16.25 | 8.13 | 51,883 |   |  			
            | 12/28/2015 | -0.60 / -3.59% | 16.70 | 16.70 | 16.10 | 16.10 | 16.50 | 7.98 | 633,750 |   |  
            | 12/25/2015 | 0.00 / 0.00% | 17.00 | 17.00 | 16.70 | 16.70 | 16.95 | 8.28 | 20,980 |   |  			
            | 12/24/2015 | -0.10 / -0.60% | 17.00 | 17.00 | 16.70 | 16.70 | 16.91 | 8.28 | 70,377 |   |  
            | 12/23/2015 | -0.30 / -1.75% | 17.00 | 17.00 | 16.80 | 16.80 | 16.92 | 8.33 | 47,400 |   |  			
            | 12/22/2015 | +0.20 / +1.18% | 16.90 | 17.10 | 16.90 | 17.10 | 16.91 | 8.48 | 182,247 |   |  
            | 12/21/2015 | -0.10 / -0.59% | 17.00 | 17.00 | 16.70 | 16.90 | 16.83 | 8.38 | 84,239 |   |  |