Mr. Leonard Osser has been a Director of Milestone Scientific, Inc. since he founded that company in 1989. He served as Chief Executive Officer of Milestone Scientific from the time of its founding until 2021, other than twice during the last 20 years when he intended to retire from that position. He served as Chairman of Milestone Scientific from 1991 until September 2009 at which time he resigned as Chairman of Milestone Scientific but remained a director. Mr. Osser serves as Managing Member of U.S. Asian Consulting Group LLC, which provides various consulting services to the Company. Mr. Osser is a shareholder of the Company. He is a member of our non-medical Board of Advisors and serves as Director of China operations. Mr. Osser is the spouse of Marilyn Elson, our Chief Financial Officer.