EMERYVILLE, CALIF.  — Amyris, Inc. has named Kathy L. Fortmann as its new chief executive officer. Fortmann succeeds interim CEO Han Kieftenbeld.

Kieftenbeld has been chief financial officer since March 2020 and interim CEO since June 2023.

Fortmann was most recently CEO of Amsterdam Commodities NV, and previously nourish president, executive team at IFF. She has held leadership positions at such companies as FrieslandCampina Ingredients, Cargill and DuPont Nutrition & Health.

Amyris is a synthetic biology company that creates ingredients using precision fermentation.