X0304 4 2011-08-12 0 0001311486 Global Geophysical Services Inc GGS 0001480127 Verghese P Mathew 13927 S. GESSNER RD. MISSOURI CITY TX 77489 0 1 0 0 Sr. VP & CFO Common Stock 24782 D Common Stock 2011-08-12 4 A 0 7500 0 A 32282 D These shares are subject to GGS' standard vesting requirements over eight (8) calendar quarters, more specifically 12.5% (twelve and one-half percent) of the total shares will vest on each of the following dates starting on December 31, 2012, and then March 31, 2013, June 30, 2013, September 30, 2013, December 31, 2013, March 31, 2014, June 30, 2014, and September 30, 2014. /s/ P. Mathew Verghese 2011-08-16