Mr. Michael D. Wortley, also known as Mike, has been the Chief Legal Officer and Vice President of Reata Pharmaceuticals, Inc. since April 2015. Mr. Wortley is Administrative Partner of the Vinson & Elkins's Dallas, Texas, office and Co-Section Head of the Vinson & Elkins's Corporate Finance and Securities Section. Mr. Wortley has over 35 years of corporate law experience, focusing on corporate governance matters and mergers and acquisitions, including 25 years in management positions. His clients include issuers, underwriters and investors in public and private securities transactions, including public and private equity and debt offerings (firm commitment, best efforts and shelf offerings); venture capital transactions; and roll-up transactions involving partnerships and corporations. He was a Partner and Lawyer of Vinson & Elkins LLP from 1995 to 2014 and served as its Chief Operating Officer. Mr. Wortley's primary area of practice is corporate and securities law. Mr. Wortley served as an Attorney at Vinson & Elkins LLP from 1995 to March 2015, served as its Chief Operating Partner. He was Managing Partner of the Dallas office and at Johnson & Wortley, P.C. prior to 1995, served as its Chairman of the Board and President. He was Managing Director and Chairman of Johnson & Wortley, P.C from 1991 to 1993. He regularly advises and counsels boards of directors and executives in connection with sensitive corporate matters and transactions, including takeover defenses, employment matters, acquisition inquiries, fiduciary duties, executive compensation, press releases and other documents and financings and restructurings. He represented a public company in its sale through an auction process to private equity funds. He represented a private equity fund in its sale of a healthcare company and represented a private equity fund in its acquisition of the third largest red meat business in the U.S. He represented a private equity fund in six leveraged buyouts in one year and represented a private equity fund's radio company that became by station count the largest owner of radio stations in the U.S. in over 50 acquisitions. He represented a large independent oil and gas company in its acquisition of another public independent oil and gas company and represented the largest manufacturer of tile in its sale to another public company. He represented the largest Hispanic radio company in its acquisition by the largest Hispanic television company and represented a client in the hostile takeover of a non-U.S., publicly-traded oil and gas company. He represented an independent oil and gas company in a merger that, at the time, created the third largest U.S. independent public oil and gas company. He represented a U.S. independent public oil and gas company in an acquisition of a public Canadian oil and gas company. He Represented a client in an investment in four publicly-traded REITS. He represented the same client in the business combination of the four REITS and represented a client in the acquisition of a publicly-traded REIT. He represented a publicly-traded REIT in its sale to another publicly-traded REIT. He has been an Independent Director of Pioneer Natural Resources Company since June 2015. A leader in his community as well, he serves on the board of directors of the Vogel Alcove Childcare Center for the Homeless. He serves as Member of American Bar Association and Dallas Bar Association. As a result of his work on behalf of clients, Mike has been recognized by Chambers Global as a top lawyer in corporate/mergers & acquisitions in each of the last five years (2002-2007), and by The Best Lawyers in America as a leader in corporate law the last four years from 2003 to 2007. He was Admitted to practice: Texas, 1978. Mr. Wortley holds BA in Political Science in 1970 from Southern Methodist University, JD from Southern Methodist University in 1978 and Master of Arts in Regional Planning from University of North Carolina at Chapel Hill in 1973.