X0202 4 2007-05-23 0 0000314606 GEOKINETICS INC GOK 0001008024 ZIEGLER WILLIAM R SATTERLEE STEPHENS BURKE & BURKE, LLP 230 PARK AVENUE 11THFLOOR NEW YORK NY 10169 1 0 1 0 Common Stock 2007-05-23 4 A 0 1785 0.00 A 297159 D Common Stock 79777 I By partnership Common Stock 531780 I By limited liability company Refers to shares of Common Stock owned by Somerset Capital Partners ("SCP"), a general partnership in which the Reporting Person is a general partner and owner of one-third of the partnership interests. The Reporting Person disclaims beneficial ownership of the shares of Common Stock beneficially owned by SCP that are in excess of his pecuniary interest therein. Refers to shares of Common Stock owned by Blackhawk Investors II, L.L.C. ("Blackhawk II"), of which Blackhawk Capital Partners ("BCP") is the sole managing member. The Reporting Person is (i) one of two partners of BPC, the sole managing member of Blackhawk II, and (ii) an investor member of Blackhawk II (with direct ownership of approximately 13.48% of the total membership interests). In addition, SCP is an investor member of Blackhawk II (with ownership of 5.593% of the total membership interests). The Reporting Person disclaims beneficial ownership of the shares of Common Stock beneficially owned by Blackhawk II that are in excess of his pecuniary interest therein. /s/ William R. Ziegler 2007-05-25