Leslie Bernhard

Chairman of the Board

Leslie has served as an Independent Director of Milestone since May 2003 before being named Chairman of the Board in September of 2009. She co-founded AdStar, Inc. a Nasdaq listed company, and since 1986 has served as its President, Chief Executive Officer and Executive Director. AdStar is an application service provider for the newspaper classified advertising industry.

Brent W. Johnston


Mr. Johnston is a senior level, medical device industry executive with over 25 years of experience in sales, marketing and organizational efficiency. He has brought a number of spine, orthopedic and other medical products to market. Prior to joining Milestone Scientific, Mr. Johnston served as Vice President of Sales at Clariance, a spinal device company, where he restructured the sales and marketing strategy for the US market. During his tenure at Clariance, he executed on growth strategies resulting in significant year-over-year growth. Previously, he served as Chief Executive Officer at ExsoMed, an upper extremity orthopedic company where he brought the company from start up to full commercialization. Mr. Johnston founded and served as Chief Operating Officer at Aurora Spine, Inc., where he grew the company from startup to full commercialization and oversaw the launch of 20 products. He was also a key member of the team to take the company public. He held senior executive roles at Phygen Spine and Lanx, Inc., where he was responsible for growing sales and launching new products. Mr. Johnston also founded and grew Corvus Medical, Inc., a company focused on products in spine, orthopedics, biologics and durable goods. Mr. Johnston received a Bachelor’s degree in Political Science and Business Administration from Eastern Washington University and received a Masters in Business Administration from Norwich University.

Joseph D'Agostino

Chief Financial Officer

Joining Milestone in January 2008 as CFO, Joseph brings Milestone a wealth of finance and accounting experience earned over 25 years serving both publicly and privately held companies. A results-oriented and decisive leader, he has specific proven expertise in treasury and cash management, strategic planning, information technology, internal controls, Sarbanes-Oxley compliance, operations and financial and tax accounting. Immediately prior to joining Milestone, Joseph served as Senior Vice President and Treasurer of Summit Global Logistics, a publicly traded, full service international freight forwarder and customs broker with operations in the United States and China.

Previous executive posts also included Executive Vice President and CFO of Haynes Security, Inc., a leading electronic and manned security solutions company serving government agencies and commercial enterprises; Executive Vice President of Finance and Administration for Casio, Inc., the U.S. subsidiary of Casio Computer Co., Ltd., a leading manufacturer of consumer electronics with subsidiaries throughout the world; and Manager of Accounting and Auditing for KPMG's national office in New York City. Joseph is a Certified Public Accountant and holds memberships in the American Institute of CPA's, New Jersey Society of CPA's, Financial Executive Institute, Consumer Electronics Industry Association and Homeland Security Industry Association. He is a graduate of William Paterson University where he earned a Bachelor of Arts degree in Science.

Jan Adriaan (Arjan) Haverhals

Chief Executive Officer of Wand Dental

Mr. Haverhals brings more than 30 years of sales, marketing, product development, and international expansion experience within the medical device, pharmaceutical, and other industries. Mr. Haverhals has been responsible for the growth and profitability of both startups and global industry leaders, organically and through strategic acquisitions. Prior to joining the Company and Wand Dental, Mr. Haverhals was senior vice president of sales at Xcentric Mold & Engineering, where he was instrumental in increasing sales productivity and efficiency for that company’s prototype injection molding services, which included leading healthcare company clients. Previously, at Straumann, LLC, a global leader in manufacturing medical and dental devices, Mr. Haverhals held a series of senior sales and marketing roles including vice president of customer marketing & education, where he oversaw all product franchises and led the launch of more than 30 products in the North American market. Mr. Haverhals also served as senior vice president for the Nordic Region at Straumann AB, senior vice president of global sales digital solutions, which included oversight of the strategic acquisition of Etkon; and served as vice president of the Prosthetics Business Unit, where he introduced a new implant and prosthetics product line within a new market segment. He also served as vice president of global marketing & sales at Elkem AS, one of Norway's largest industrial companies. Previously, Mr. Haverhals served as executive vice president of marketing & sales at Cresco Ti Systems Sàrl, a global dental implant company, where he was responsible for turning around and managing global sales, marketing, international business. Mr. Haverhals holds an MS in Pharmacy from the University of Leyden in the Netherlands.

Mark Hochman, D.D.S.

Director of Clinical Affairs

Dr. Hochman has served as Director of Clinical Affairs and Director of Research and Development since 1999. He has a Doctorate of Dental Surgery with advanced training in the specialties of Periodontics, Orthodontics and Implant Dentistry from New York University of College of Dental Surgery, and has been practicing Dentistry since 1984. He formally held a part-time faculty appointment as a clinical associate professor at NYU School of Dental Surgery for over ten years and remains an active international lecturer on a variety of topics. He is recognized as a world authority on Advanced Drug Delivery Systems, having published numerous scientific articles in this area, and is credited for developing several new techniques using this innovative technology. Dr. Hochman has been responsible for inventing and contributing to the development of much of the technology currently available from Milestone.

Leonard Osser

Interim Chief Executive Officer, Director of China Operations

Leonard served as the Company's Chief Executive Officer from March of 2009 until July of 2017 and as the Company's Chairman from 1991 until September of 2009. He originally served as the Company's Chief Executive Officer from 1991 through 2007. From 1980 until the consummation of Milestone's public offering in November 1995, Leonard was primarily engaged as the principal owner and Chief Executive Officer of U.S. Asian Consulting Group, Inc., a New Jersey-based provider of consulting services specializing in distressed or turnaround situations in both the public and private markets.