Andrew D. Reddick
  President, Chief Executive Officer, Director

Robert B. Jones
  Senior Vice President and Chief Operating Officer

Ron J. Spivey, Ph.D.
  Senior Vice President and Chief Scientific Officer

Peter A. Clemens, CPA
  Senior Vice President Investor and Media Relations, Chief Financial Officer and Secretary

James F. Emigh, R.Ph.
  Vice President of Marketing and Administration

Robert A. Seiser, CPA
  Vice President, Treasurer and Corporate Controller

John G. Gilkay, P.E.
  Director of EHS & Engineering

Ronald L. Leech
  Senior Director Quality & Analytical Chemistry