http://www.ptsc.com/management-team.html

Carlton M Johnson, Jr., Director

Carlton Johnson has served as a director of the Company since 2001, and is Chairman of the Executive Committee of the Board of Directors. From June 1996 through March 2013, Mr. Johnson served as in-house legal counsel for Roswell Capital Partners, LLC and related entities. Mr. Johnson has been admitted to the practice of law in Alabama since 1986, Florida since 1988 and Georgia since 1997. He has been a shareholder in the Pensacola, Florida AV- rated law firm of Smith, Sauer, DeMaria Johnson and was President-Elect of the 500 member Escambia-Santa Rosa Bar Association. He also served on the Florida Bar Young Lawyers Division Board of Governors. Mr. Johnson earned a degree in History/Political Science at Auburn University and a Juris Doctor at Samford University - Cumberland School of Law. Since 1999, Mr. Johnson has served on the board of directors of Peregrine Pharmaceuticals, Inc., a publicly held emerging bio-tech company, and currently serves as chairman of Peregrine’s board of directors. Mr. Johnson serves as chairman of Peregrine’s audit committee and is a member of Peregrine’s compensation and nominating committees. From May 2009 to March 2012, Mr. Johnson served on the board of directors of Cryoport, Inc. a publicly held company providing cost-efficient frozen shipping to biopharmaceutical and biotechnology industries. Mr. Johnson served as chairman of Cryoport’s compensation committee and as a member of its audit committee and nomination and governance committee. From November 2009 to December 2011, Mr. Johnson served on the board of directors of ECOtality, Inc. a leader in clean electric transportation and storage technologies. Mr. Johnson served on the audit committee and nominating committee of ECOtality. The Board of Directors concluded that Mr. Johnson should serve as a director in light of the extensive public company finance and corporate governance experience that he has obtained through serving on the boards and audit committees of Peregrine Pharmaceuticals, Inc., Cryoport, Inc., and ECOtality, Inc.