F1HCperf Holdings B.V. (formerly known as GEODynamics B.V.), a Netherlands private limited liability company, directly owns common stock of the Issuer. LRP IV Luxembourg Holdings S.a.r.l. ("LRP IV") and LRP V Luxembourg Holdings S.a.r.l. ("LRP V") collectively own a majority of the outstanding equity interests in GEODynamics B.V. LRP GP IV, Inc. ("GP Inc. IV") is the general partner of Lime Rock Partners GP IV, L.P. ("GP LP IV"), which is the general partner of Lime Rock Partners IV, L.P. ("Lime Rock IV"), which wholly owns LRP IV. LRP GP V, Inc. ("GP Inc. V") is the general partner of Lime Rock Partners GP V, L.P. ("GP LP V"), which is the general partner of Lime Rock Partners V, L.P. ("Lime Rock V"), which wholly owns LRP V. John T. Reynolds ("Reynolds") and Jonathan C. Farber ("Farber") are the sole directors of each of GP Inc. IV and GP Inc. V.
F2(Continued from Footnote 1) Therefore, LRP IV, Lime Rock IV, GP LP IV, GP Inc. IV, LRP V, Lime Rock V, GP LP V, GP Inc. V, Reynolds and Farber may be deemed to beneficially own the reported securities. This report shall not be an admission that LRP IV, Lime Rock IV, GP LP IV, GP Inc. IV, LRP V, Lime Rock V, GP LP V, GP Inc. V, Reynolds and Farber is the beneficial owner of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934 or for any other purposes.