December 11, 2023


Lallemand announces new president and GM 




Lallemand Animal Nutrition will welcome a new president and general manager in 2024 as Dr. Mathieu Castex was appointed to succeed Yannig Le Treut on February 1.


Dr. Castex previously served as the company's director of research and development since 2014.


To ensure a seamless transition, Le Treut will take on the role of senior vice president and special advisor at the Lallemand Group level, while supporting Lallemand Animal Nutrition's management team and leadership transition over the next several years.


"I am extremely pleased that, in Mathieu, we have a leader with a strong scientific background, aligned with the product offerings we have for our customers around the world," said Bill Nankervis, executive vice president and chief operating officer of the Lallemand Group. "In addition, his product management and commercial experience make him an excellent choice to build on the success Yannig achieved over the past decade leading the Lallemand Animal Nutrition team. I'm looking forward to continuing to work closely with Yannig in his new capacity."


Dr. Castex said: "I am delighted to be able to continue to channel my fervor for microbiology, animals and animal breeding in the service of the Animal Nutrition business unit. I am honored to be entrusted with succeeding Yannig in leading this remarkable team and business, which he played an integral role in establishing and strengthening. I am confident that our specialised teams — when coupled with science-based products, innovation and our dedication to customer satisfaction — represent a winning formula for success for us, our partners and our industry."


Dr. Castex joined Lallemand Animal Nutrition in 2009 as the product manager leading the yeast derivatives and aquaculture portfolio.


He graduated from AgrosParisTech in Paris, France, and holds a doctoral degree in microbiology and physiology of nutrition.


Dr. Castex's experience includes research and development, product management and business development within animal nutrition and health.

- Lallemand

Video >

Follow Us