• Clinton Lewis

    Executive Vice President, President, International Operations

Clint Lewis is executive vice president and president of International Operations at Zoetis. In this role, he oversees the management of the livestock and companion animal business markets outside the United States.
Mr. Lewis previously served as president, U.S. Operations at Zoetis and in the Pfizer Animal Health organization. He joined Pfizer Animal Health in 2007.

Mr. Lewis joined Pfizer in 1988 as a sales representative in Long Island, N.Y., and has held positions of increasing responsibility in several areas across various commercial operations dedicated to human health prior to joining animal health, including vice president and general manager of Pfizer’s U.S. Anti-Infectives/HIV business unit.

In 2011, Mr. Lewis was elected chairman of the Animal Health Institute (AHI) for the 2011-12 term. A member of AHI since 2007, Mr. Lewis previously served as AHI vice chair for the 2009-2010 term. AHI is the trade association for the animal health industry in the U.S. advocating on various issues important to the industry, including efficient and effective regulatory and approval processes by the U.S. Department of Agriculture (USDA), the Food and Drug Administration (FDA), and the Environmental Protection Agency (EPA).

Mr. Lewis holds a bachelor’s degree in biology from Fairfield University and a Master of Business Administration in marketing from Fairleigh Dickinson University.

  • Joachim Hasenmaier

    Member of the Board of Managing Directors

Joachim Hasenmaier, born 1960 in Vaihingen/Enz, Germany, DVM., is Member of the Board of Managing Directors of C.H. Boehringer Sohn AG & Co. KG since October 1, 2012, responsible for the Corporate Board Division Consumer Health Care and Animal Health. His nationality is German.

He received a veterinary medical degree (DVM) in 1986 from Ludwig-Maximilians-University, Munich, where he entered into a microbiological research program until 1989 receiving his Doktor med. vet. (PhD) degree. He completed his education with a Master in Management from Kellogg Business School, Chicago, USA in 1991. Prior to joining BI he worked in various positions for various international companies in Germany, Japan, Mexico and Brazil.

In 2002 he joined Boehringer Ingeheim as Corporate Senior Vice President for Boehringer Ingelheim Animal Health. In 2011 he took over the regional responsibilty for Prescription Medicine in NECAR (UK/Ireland, Nordics, Benelux, Canada, Australia/New Zealand). He held this position until he became Member of the Board of Managing Directors at C.H. Boehringer Sohn AG & Co. KG in October 2012.

  • Alan Mackay

    Executive Partner and Founder

  • Dirk Ehle

    Division Head

Dr. Dirk Ehle has been a member of the Bayer HealthCare Executive Committee and responsible for the Animal Health Division since May 1, 2012.

Dirk Ehle was born on May 26, 1969, in Cologne, Germany. He studied law at the universities of Freiburg, Aix-en-Provence (France), Wurzburg, and New York (USA).

After three years in law firms, Dirk Ehle started his career at Bayer in 2001 in the Law Department of Bayer HealthCare. In 2006, Ehle transferred to Bayer AG’s Corporate Office where he worked as Executive Assistant to the Chairman of the Board of Management. He was also in charge of Corporate Policy & Advocacy as of 2008. In 2010, Ehle was appointed Senior Bayer Representative for Central Eastern Europe and Bayer HealthCare Representative for Poland.

Dirk Ehle is married with three children.

  • Tom Zerzan

    Chief Commercial Officer

  • Michael Hemprich

    Business Development

  • Ronan Molloy


As President of Innovation Stockyard, Ronan Molloy has extensive business development experience, from start-up to mid-sized and large pharmaceutical companies. He can provide consultation to clients in the areas of business management, legal, and government regulations. Before joining Innovation Stockyard, he served in a wide variety of executive positions at companies such as Zoetis (Pfizer Animal Health), Synbiotics Corporation, and Primus Corporation (Trinity Biotech), which helped him develop a large network of contacts. Ronan has extensive experience with planning, executing, and negotiating business in the global diagnostic industry, working with medical and veterinary customers both domestically and internationally. Ronan received his Juris Doctor degree at the University of Missouri—Kansas City School of Law, and is admitted to practice law in both Missouri and Kansas, which provides great benefit to clients. He also received a Bachelor of Arts degree in Economics at the University of Kansas.

  • Charles Hoare

    Head of Global Healthcare

Charles is a healthcare focused investment banker with approximately 20 years’ experience with specialty pharmaceutical companies in the US and Europe. Previously Charles was Managing Director for the international healthcare team at BofA Merrill Lynch and currently leads Commerzbank’s global healthcare team. During this time he has advised multiple companies on public and private capital raises, debt financing, mergers, acquisitions and out-licensing transactions.

He has a particular focus on the veterinary healthcare sector, where he has been involved in transactions for almost all of the top 15 companies in the sector. Recent transactions include advising Virbac on the acquisition of the Sentinel and Sentinel Spectrum brands from Novartis, advising Lohmann Animal Health on its sale to Eli Lilly, advising Pharmaq on Permira’s investment in the company and assisting United Biomedical with creating a global strategic alliance for its swine vaccine portfolio.

Charles also chairs the Commercialisation committee of the London School of Hygiene and Tropical Medicine and serves on the school’s Finance and Planning committee. In addition, he is Chairman of the Bulldog Trust, which funds and supports entrepreneurial charities, and sits on the Boards of Directors of Placehill Limited (growth capital), Laguna Ventures Limited (late stage venture finance) and Atlantic Healthcare plc.