Our management board
Brief CV of Andreas Roth, Dr. Iris Hayes and
Volker Friedrich Osebold
Phi-Stone AG is an ambitious, technology-driven production company led by a dynamic and visionary management team. Their mission is to bring scientific findings and ideas as innovative products to the market.
Team
Mr. Andreas Roth, born 1978, mechanical engineer.
Many years of experience as a development and application engineer, particularly in the automotive and engine manufacturing sectors.
Management experience as Head of Sales, Production and Technical Managing Director.
Mr. Roth has been a member of the Management Board since April 2021 and took over as the Chairman in May 2023.
Dr. Iris Hayes received her doctorate in materials science from Kiel University in 2016 (topic: Environmentally friendly coatings for maritime applications).
She has been with Phi-Stone AG since 2016, initially in the research and development department.
In 2019, she was appointed to the Executive Board, where she assumed responsibility for research and development.
After two periods of parental leave (2021 and 2024), Iris Hayes rejoined the Executive Board in October 2025 and is responsible for Technology & Production.
Volker Friedrich Osebold
Several years of experience as a consultant at an international strategic management consultancy and a Big Four firm.
Extensive experience as a senior executive in globally operating corporations as well as mid-sized companies.