Gevo has announced the addition of agricultural industry veteran Greg Hanselman as executive vice president, operations and engineering as the company prepares for the retirement of Chris Ryan, Gevo’s long-time chief operating officer, in June of 2026. Hanselman is expected to assume the role of chief operating officer upon Dr. Ryan’s retirement.

Hanselman comes to Gevo from previous roles in global agribusiness leadership as vice president of global engineering for Ingredion, and as senior vice president of global manufacturing for Tate & Lyle, both leading global producers of plant-based food and industrial ingredients. He also held various roles at Archer-Daniels-Midland Company.

“Greg brings decades of agriprocessing and precision fermentation experience and strong business acumen in operations, engineering, and end-to-end supply chain management,” said Dr. Paul Bloom, president of Gevo. “He has a track record of operational excellence, safety leadership, and managing complex capital projects that will benefit Gevo’s current and future growth initiatives. His experience in empowering teams to drive strategic implementation will help build value throughout our processes and production.”