Thomas R. Zeigler, Ph.D., President and CEO, joined the company in 1961 as its Director of Nutrition. In 1967, Dr. Zeigler became President and began to shift the company's emphasis from commodity feeds to specialty aquatic and animal nutrition.

In the mid-1970's Dr. Zeigler assisted in the development of laboratory research diets for use at the National Institutes of Health. The fixed formulation concept used for these diets continues to serve as a sound framework for successful research being conducted today.

In 1981, he was named the Managing Partner of the International Aquaculture Research Center where he assisted in the evaluation of feed ingredients and additives, assessed nutrition and disease interactions, and developed advanced new diets for aquaculture.

Dr. Zeigler was also cofounder of Vitamin Technologies, Inc., a company that created and led the research effort for a new patented stable form of ascorbic acid (Vitamin C) known as Ascorbyl-tripolyphosphate. The technology was sold to a large pharmaceutical company in 1991.

During his tenure with the company, Dr. Zeigler has pioneered the development of over 70 unique nutritional technologies and products. He has led the company into global markets and has been an advocate for the continuing development of aquaculture worldwide.

Dr. Zeigler holds a Ph.D. and MS in Animal Nutrition, from Cornell University and BS degree in Poultry Husbandry from Pennsylvania State University, with minors in Veterinary Pathology, Chemistry, and Biochemistry. He has authored or co-authored over 20 scientific publications, made numerous presentations at trade and industry conferences around the world.

Timothy M. Zeigler, Vice President of Sales & Marketing, joined the company in 1995 after 3 years working within the pharmaceutical industry. Since that time, Tim has taken on several roles within the organization, including purchasing, pricing, and customer service management. He has also been involved in establishing standard operating procedures for customer service and new product development. Tim currently leads the company's strategic planning efforts, and along with his sales activities, interacts with customers and industry leaders to determine key market needs and opportunities.

Tim graduated with an MS in Business Administration (MSBA) from San Diego State University in 1995 and has a BS in Biology from Penn State University. He has been a member of the TEC junior executive program and has completed Dale Carnegie training in leadership and communication.

Matthew P. Zeigler, Vice President of Operations, joined the company in January of 2002 after 6 years of employment as a process engineer at a major U.S. confectionary company. Matt has led various projects at Zeigler, including the installation of Zeigler's state of the art "Extrusion Process and Vacuum Coating Technology". In addition, Matt managed operations of our East Berlin Pennsylvania facility and later moved onto Director of Technology managing new products and processes. At the present, Matt oversees all supply-chain operations and continues to work on the development of new product and process technologies.

Matt graduated in 1991 with a Bachelors of Science in Engineering from the Department of Agricultural Engineering at Pennsylvania State University. In 1992 he worked as an Aquaculture Intern for The Walt Disney Company, EPCOT Center. Matt later attended the Kansas State University and studied Food/Feed Extrusion and in 1996 completed his Masters of Science degree in Engineering from the Department of Agricultural and Biological Engineering at Pennsylvania State University. Publication: "Sources of Variance in Feed Manufacturing Systems",1996. Transactions of ASAE