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Regulatory Team

AMVAC has developed a world class Regulatory Affairs Team with a great deal of experience in global regulatory management. They are responsible for registering and defending the company’s products at the U.S. EPA and other regulatory bodies worldwide. The Regulatory Team develops and implements registration strategies to ensure that the Company’s products are in compliance with U.S. EPA, state, and international regulations as well as registering new active ingredients. The Regulatory Team also manages a series of activities including toxicology and environmental testing, and risk analysis as part of the product defense and development portfolios.

Jeannie Hemiller
Director of Registrations for Canada, Latin and Central America
Jeannie S. Hemiller began her regulatory career with AMVAC (1989-1994) in Los Angeles, CA. Subsequently she was with United Agri Products (UAP) as Director of Registrations and Regulatory Affairs (1994-2003) in Greeley, CO; Vice President of Registrations & Regulatory Affairs with Nufarm Americas, Inc. (2003-2008) in Chicago, IL; Senior Vice President and Equity Partner with Top Choice LLC (2009-2011) in Maryville, TN. She re-joined AMVAC in 2011. Jeannie graduated magna cum laude with a Bachelors of Science degree in Industrial Engineering from East Carolina University and pursued additional graduate level business education in the MBA programs at USC & Northwestern. She has a great deal of regulatory affairs management experience in the US and around the world.  She is the current Chair of the Metam Task Force. 

André Dykstra
Director of Registrations EMEA & APAC
André Dykstra is responsible for the registration of AMVAC’s products in Europe, Middle-East, Africa & Asia-Pacific. Prior to joining AMVAC in 2013, André spent the last 26 years working for Chemtura and its predecessor companies. Starting as a regulatory specialist in Duphar, he rose to positions of increasing responsibility in regulatory affairs and was Chemtura’s global registration manager for agrochemicals, managing a team of 24 registration specialists. André received his doctor’s degree in Biology (comparable to PhD) from the University of Nijmegen, The Netherlands.
Jon Wood
Director of Registrations
Jon Wood is responsible for the implementation of domestic product registration strategies and ensures that the Company’s products are in compliance with U.S. EPA and state regulations. AMVAC’s regulatory product managers and registration specialists report to Jon.  Prior to joining AMVAC, Jon was ENTEK Corporation’s Registration Manager, and Senior Research Scientist with UNOCAL’s Agricultural Chemicals Research Group, where he was employed for 15 years. Jon received his Bachelors of Science degree in Zoology from California State University, Long Beach, and his Masters of Business Administration degree from California Polytechnic University, Pomona.

Ann Jonynas
Director of Toxicology
As Director of Toxicology, Ms. Jonynas manages a series of activities including toxicology testing and toxicology development strategies, risk analysis and human exposure/biomontoring studies. Prior to joining AMVAC, she was employed for 18 years by ICI companies in the United States and England in similar roles. Ms. Jonynas was awarded Diplomat of Royal College of Pathologist in Toxicology and received her M.Sc. in Toxicology in Birmingham, England. She received her Honors in Pharmacology/Pathology from Ewell College, London.

Dick Freedlander, Ph.D.
Director of Environmental Science
Dr. Freedlander manages a series of activities including residue chemistry, metabolism, environmental fate, ecotoxicology and associated risk assessments. Prior to joining AMVAC, he developed the contract laboratory JRF America. He has also served as the R&D Laboratory Director for Cerexagri and in his earlier employment with ICI Americas, he was responsible for product formulation development. Dr. Freedlander received his Bachelors of Science degree from the University of Miami and his doctorate degree from the University of South Carolina.