Psychemedics Corp.

Mr. Kubacki has been the Company s President and Chief Executive Officer and has served as a director of the Company since 1991. On November 30, 2003, he was elected Chairman of the Board. He is a Director of Protection One, Inc. He is also a trustee of the Center for Excellence in Education based in Washington, DC.

Dr. Schaffer joined the Company in 1999 as Vice President of Laboratory Operations. Prior to joining the Company, he served as Director of Toxicology, Technical Manager and Responsible Person for the Leesburg, Florida laboratory of SmithKline Beecham Clinical Laboratories, from 1990 to 1999. Dr. Schaffer has been an inspector for the Substance Abuse and Mental Health Services Administration s National Laboratory Certification Program since 1989. Dr. Schaffer was also a member of the Board of Directors of the American Board of Forensic Toxicologists from 1990 to 1999.

Mr. Weinert is an entrepreneur whose current business activities are concentrated in real estate development, theatre and film development. He is the Chief Executive Officer and Chairman of Bella Media Plc. He also serves as the Chief Executive Officer of Bella Cinema LLC, Barrington Services Group, Inc., and San Telmo, Inc. He has served on the Business Advisory Council for the University of Dayton for over 20 years. Mr. Weinert has been a director of the Company since 1991. The information required by Item 405 of Regulation S-K will be set forth in the Proxy Statement of the Company relating to the 2006 Annual Meeting of Stockholders to be held on May 10, 2007 and is incorporated herein by reference. We have a code of ethics that applies to all of our employees and non-employee directors. This code satisfies the requirements set forth in Item 406 of Regulation S-K and applies to all relevant persons set forth therein. The Company will mail to interested parties a copy of the Code of Ethics upon written request and without charge. Such request shall be made to our General Counsel, 125 Nagog Park, Acton, Massachusetts 01720.

Mr. Connick was District Attorney for Orleans Parish (New Orleans, LA) from 1974 to 2003, having been elected five times. Mr. Connick has also been a national leader in the war on drugs. His national leadership was prominent in advocating drug testing to help high school students remain drug-free and establishing model programs in a number of schools. In December 2002, Mr. Connick received from Drug Czar John P. Walters the Director s Award for Distinguished Service in recognition of exemplary accomplishment and distinguished service in the fight against illegal drugs. Mr. Connick has been a director of the Company since 2003.