Kirk K. Calhoun joined the Board of Directors as the chairman of the audit committee upon the completion of this offering. Mr. Calhoun joined the public accounting firm Ernst & Young, LLP in 1965 and served as a partner of the firm from 1975 until his retirement in 2002. Mr. Calhoun has a B.S. in Accounting from the University of Southern California and is a Certified Public Accountant (non-practicing) in California. He is currently lead director of the Board of Directors of Response Genetics, Inc. Previously Mr. Calhoun served on the boards of five public companies up until the dates of their respective sales, including Abraxis Bioscience, Inc., Myogen, Inc., Aspreva Pharmaceutical Corporation, Adams Respiratory Therapeutics, Inc., and Replidyne, Inc. Mr. Calhoun’s experience serving on public company audit committees and boards of directors and his past work as a partner with Ernst & Young, LLP has led the Board of Directors to conclude that Mr. Calhoun has the requisite expertise to serve as a director of the Company and qualifies as a financial expert for audit committee purposes.

Eva M. Kalawski has been a director since July 2007. Ms. Kalawski joined Platinum in 1997, is a Partner and serves as the firm’s General Counsel and Secretary. Ms. Kalawski serves or has served as an officer and/or director of many of Platinum’s portfolio companies. Prior to joining Platinum in 1997, Ms. Kalawski was Vice President of Human Resources, General Counsel and Secretary for Pilot Software, Inc. Ms. Kalawski earned a Bachelor’s Degree in Political Science and French from Mount Holyoke College and a Juris Doctor from Georgetown University Law Center. Ms. Kalawski’s expertise and experience managing the legal operations of many portfolio companies has led the Board of Directors to conclude that she has the background and skills necessary to serve as a director of the Company.

Stephen Larson joined the Board of Directors in 2014, and was appointed to the Board’s Audit Committee. Larson spent 35 years with Caterpillar Inc. in various senior leadership roles including, Vice President, Caterpillar Financial Services and President and Chairman of Caterpillar Logistics, a wholly owned subsidiary of Caterpillar Inc. Mr. Larson previously served for six years as a Commissioner on the Board of the Metropolitan Airport Authority of Peoria, Illinois.

Mary Ann Sigler has been a director since January 2010. Ms. Sigler is the Chief Financial Officer of Platinum. Ms. Sigler joined Platinum in 2004 and is responsible for overall accounting, tax, and financial reporting as well as managing strategic planning projects for the firm. Prior to joining Platinum, Ms. Sigler was with Ernst & Young LLP for 25 years where she was a partner. Ms. Sigler has a B.A. in Accounting from California State University Fullerton and a Masters in Business Taxation from the University of Southern California. Ms. Sigler is a Certified Public Accountant in California, as well as a member of the American Institute of Certified Public Accountants and the California Society of Certified Public Accountants. Ms. Sigler’s experience in accounting and strategic planning matters has led the Board of Directors to conclude that she has the requisite qualifications to serve as a director of the Company and facilitate its continued growth.