Rex Energy Corporation – COLLATERAL AGREEMENT Dated as of March 31, 2016 Made by REX ENERGY CORPORATION and EACH OF THE OTHER GRANTORS (AS DEFINED HEREIN) in Favor of WILMINGTON SAVINGS FUND SOCIETY, FSB, as Trustee (March 31st, 2016)

THIS COLLATERAL AGREEMENT (this "Agreement"), dated as of March 31, 2016 made by Rex Energy Corporation, a corporation duly formed and existing under the laws of the State of Delaware (the "Company"), Rex Energy I, LLC, a limited liability company duly formed and existing under the laws of the State of Delaware ("Rex Energy I"), Rex Energy Operating Corp., a corporation duly formed and existing under the laws of the State of Delaware ("Rex Energy Operating"), PennTex Resources Illinois, Inc., a corporation duly formed and existing under the laws of the State of Delaware ("PennTex Resources Illinois"), Rex Energy IV, LLC, a limited liability company duly formed and existing under the laws of the State of Delaware ("Rex Energy IV"), R.E. Gas Development, LLC, a limited liability company formed and existing under the laws of the state of Delaware ("R.E. Gas") (the Company, Rex Energy I, Rex Energy Operating, PennTex Resources Illinois, Rex Energy IV, R.E. Gas and any other Person that bec

Rex Energy Corporation – Settlement Agreement (August 5th, 2011)

This Settlement Agreement (the Agreement) is made by and among plaintiffs Clyde J. Snyder and Janelle Snyder, William L. Snyder II, and Ray E. White and Sandra K. White (collectively Plaintiffs), as representatives of the class defined below, and Rex Energy I, LLC (Rex Energy) and Rex Energy Corporation (REC) (collectively Defendants), by and through their respective attorneys of record. Subject to the approval by the Court pursuant to Pa.R.Civ.P. 1714, the parties agree to settle and compromise this action, Snyder et al. v. Rex Energy I, LLC, et al., Civil Action No. 6332 of 2009, pending in the Court of Common Pleas of Westmoreland County, Pennsylvania (the Action), under the following terms and conditions.