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                    Closing price on 6/5/2015
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        |           
                
                    | Open | 20.60 |  
                    | High | 21.30 |  
                    | Low | 20.50 |  
                    | Volume | 937,387 |  
                    | Split-adjusted Price | 10.02 |  
                
             | 
 |  PGS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/5/2015 | +0.70 / +3.40% | 20.60 | 21.30 | 20.50 | 21.30 | 20.86 | 10.02 | 937,387 |   |  
            | 6/4/2015 | +0.50 / +2.49% | 20.10 | 20.70 | 20.10 | 20.60 | 20.56 | 9.69 | 1,091,661 |   |  			
            | 6/3/2015 | +0.30 / +1.52% | 19.80 | 20.40 | 19.80 | 20.10 | 20.21 | 9.46 | 429,055 |   |  
            | 6/2/2015 | -0.30 / -1.49% | 20.20 | 20.20 | 19.80 | 19.80 | 20.10 | 9.32 | 249,781 |   |  			
            | 6/1/2015 | -0.10 / -0.50% | 20.10 | 20.40 | 20.10 | 20.10 | 20.25 | 9.46 | 190,488 |   |  
            | 5/29/2015 | -0.10 / -0.49% | 20.30 | 20.30 | 20.00 | 20.20 | 20.15 | 9.50 | 284,282 |   |  			
            | 5/28/2015 | +0.20 / +1.00% | 20.10 | 20.70 | 20.00 | 20.30 | 20.35 | 9.55 | 730,066 |   |  
            | 5/27/2015 | -0.20 / -0.99% | 20.40 | 20.40 | 20.00 | 20.10 | 20.18 | 9.46 | 391,406 |   |  			
            | 5/26/2015 | +0.70 / +3.57% | 19.60 | 20.50 | 19.60 | 20.30 | 20.17 | 9.55 | 631,921 |   |  
            | 5/25/2015 | +0.50 / +2.62% | 19.10 | 19.70 | 19.10 | 19.60 | 19.37 | 9.22 | 541,591 |   |  			
            | 5/22/2015 | 0.00 / 0.00% | 19.00 | 19.50 | 19.00 | 19.10 | 19.11 | 8.99 | 359,199 |   |  
            | 5/21/2015 | -0.20 / -1.04% | 19.10 | 19.30 | 18.90 | 19.10 | 18.99 | 8.99 | 215,477 |   |  			
            | 5/20/2015 | +0.30 / +1.58% | 19.00 | 19.50 | 19.00 | 19.30 | 19.29 | 8.85 | 246,780 |   |  
            | 5/19/2015 | +0.20 / +1.06% | 19.10 | 19.10 | 18.80 | 19.00 | 19.02 | 8.71 | 78,360 |   |  			
            | 5/18/2015 | -0.50 / -2.59% | 19.10 | 19.30 | 18.80 | 18.80 | 19.06 | 8.62 | 174,106 |   |  
            | 5/15/2015 | -0.10 / -0.52% | 19.40 | 19.60 | 19.30 | 19.30 | 19.39 | 8.85 | 193,834 |   |  			
            | 5/14/2015 | +0.10 / +0.52% | 19.50 | 19.60 | 19.30 | 19.40 | 19.43 | 8.89 | 115,397 |   |  
            | 5/13/2015 | -0.10 / -0.52% | 19.60 | 19.70 | 19.30 | 19.30 | 19.45 | 8.85 | 172,842 |   |  			
            | 5/12/2015 | -0.30 / -1.52% | 19.60 | 19.70 | 19.40 | 19.40 | 19.56 | 8.89 | 202,371 |   |  
            | 5/11/2015 | -0.20 / -1.01% | 19.80 | 19.90 | 19.70 | 19.70 | 19.74 | 9.03 | 128,505 |   |  			
            | 5/8/2015 | -0.10 / -0.50% | 20.00 | 20.10 | 19.70 | 19.90 | 19.92 | 9.12 | 326,969 |   |  
            | 5/7/2015 | +0.10 / +0.50% | 19.90 | 20.20 | 19.90 | 20.00 | 20.07 | 9.17 | 169,937 |   |  			
            | 5/6/2015 | +0.10 / +0.51% | 20.10 | 20.30 | 19.90 | 19.90 | 20.02 | 9.12 | 191,300 |   |  
            | 5/5/2015 | 0.00 / 0.00% | 19.80 | 20.00 | 19.20 | 19.80 | 19.68 | 9.07 | 232,100 |   |  			
            | 5/4/2015 | -0.40 / -1.98% | 20.30 | 20.50 | 19.80 | 19.80 | 20.07 | 9.07 | 394,737 |   |  
            | 4/27/2015 | -0.20 / -0.98% | 20.40 | 20.50 | 20.10 | 20.20 | 20.27 | 9.26 | 123,000 |   |  			
            | 4/24/2015 | +0.50 / +2.51% | 20.00 | 20.40 | 19.90 | 20.40 | 20.11 | 9.35 | 410,100 |   |  
            | 4/23/2015 | +0.20 / +1.02% | 19.70 | 19.90 | 19.70 | 19.90 | 19.81 | 9.12 | 135,906 |   |  			
            | 4/22/2015 | -0.20 / -1.01% | 19.90 | 19.90 | 19.70 | 19.70 | 19.78 | 9.03 | 121,100 |   |  
            | 4/21/2015 | +0.10 / +0.51% | 19.90 | 20.00 | 19.70 | 19.90 | 19.90 | 9.12 | 211,100 |   |  |