Executive Leadership

Dr. Arnold is a Professor at the Bauhaus University in Weimar, Germany. He is one of Germany's leading biochar experts and developer of the Biochar Calculator.

Mr. Tarpenning was a co-founder of the Tesla Electric Motor Car Company, where he served as CTO and VP of  Engineering.   Mr. Tarpenning has a BS in EE from Stanford University.

Mr. Rapp is the 3rd generation grandson of the founder of a farm in California Central Valley; he operates the family-owned farm.

John is a co-founder of SAI. He was an organic farmer for over 30 years. John was also the first approved organic farmer in Montana with a wealth of practical experience.

Mr Stokes is the 5th generation grandson of the founder of a farm in California Central Valley; he is president of the management team that operates the family-owned farm.

 holds a Ph.D. in Chemistry and currently serves as the Business Manager at Taiwan's Industrial Technology

Research Institute (ITRI), with a strong background in materials chemistry and agricultural chemistry. In 2023, he

broadened his expertise by completing the SCPD business program at Stanford University in Silicon Valley.