X0303 4 2010-04-27 0 0001311486 Global Geophysical Services Inc GGS 0001480713 Skerl Damir S C/O GLOBAL GEOPHYSICAL SERVICES, INC. 13927 SOUTH GESSNER ROAD MISSOURI CITY TX 77489 1 0 0 0 Class B Common Stock 2010-04-27 4 J 0 233450 D 0 D Common Stock 2010-04-27 4 J 0 333450 A 333450 D Class B Common Stock 2010-04-27 4 J 0 16667 D 0 I Christopher Robert Skerl Grandchild Trust, Damir S. Skerl, Trustee Common Stock 2010-04-27 4 J 0 16667 A 16667 I Christopher Robert Skerl Grandchild Trust, Damir S. Skerl, Trustee Common Stock 2010-04-27 4 S 0 822 12.00 D 15845 I Christopher Robert Skerl Grandchild Trust, Damir S. Skerl, Trustee Class B Common Stock 2010-04-27 4 J 0 16667 D 0 I Matthew Phillip Skerl Grandchild Trust, Damir S. Skerl, Trustee Common Stock 2010-04-27 4 J 0 16667 A 16667 I Matthew Phillip Skerl Grandchild Trust, Damir S. Skerl, Trustee Common Stock 2010-04-27 4 S 0 822 12.00 D 15845 I Matthew Phillip Skerl Grandchild Trust, Damir S. Skerl, Trustee Class B Common Stock 2010-04-27 4 J 0 16666 D 0 I Matthew Phillip Skerl Grandchild Trust, Damir S. Skerl, Trustee Common Stock 2010-04-27 4 J 0 16666 A 16666 I Matthew Phillip Skerl Grandchild Trust, Damir S. Skerl, Trustee Common Stock 2010-04-27 4 S 0 822 12.00 D 15844 I Matthew Phillip Skerl Grandchild Trust, Damir S. Skerl, Trustee Preferred Stock 2010-04-27 4 J 0 100000 D Common Stock 100000 0 D Stock Option 15.00 2010-04-27 4 J 0 10000 0 A 2008-10-31 2017-10-28 Common Stock 10000 10000 D Pursuant to a reclassification exempt under Rule 16b-7, each share of Class A and B Common Stock and Preferred Stock are converting, immediately and automatically, into shares of Common Stock, as part of a recapitalization of the issuer's capital stock structure. As of the filing date, 50% of these shares have vested. The remainder of these shares will vest 25% on each of the following dates; October 31, 2010 and October 31, 2011. Pursuant to the reclassification discussed in footnote 1, these options now convert to Common Stock instead of Class B Common Stock, only if and when exercised. The Convertible Preferred Stock is immediately exercisable and does not have an expiration date. /s/ Damir S. Skerl 2010-04-29