Sol Diamond, Ph.D.
Chief Executive Officer
Sol is an inventor and entrepreneur with 20 years experience in medical imaging research and development. He is also an Associate Professor of Engineering at Dartmouth where he is a Member of the Translational Engineering in Cancer Research Program at the Dartmouth-Hitchcock Medical Center. Sol has over 50 publications, 2500 citations, and holds 8 US patents.
Christian Knopke, Ph.D.
Chief Operating Officer
Christian is a biomedical engineer and co-inventor of Lodestone’s IRIS biosensor. He completed his PhD at the Physikalisch-Technische Bundesanstalt in Berlin, Germany focusing on the topic of quantitative detection of magnetic nanoparticles in biological samples. Christian also developed all the mechanical systems for Lodestone’s magnetic readers.


John Kaufmann, MBA
Strategic Advisor
John is the CFO and co-founder of S1 Biopharma, a developer of prescription therapeutics for under-treated CNS dysfunctions. Prior to that, John was a finance executive at Laureate Education and Fidelity Investments, where he had senior finance and FP&A roles overseeing multinational high-growth operating subsidiaries.
Arti Gaur, PhD
Research Advisor
Arti is an Assistant Professor of Neurology at Geisel School of Medicine at Dartmouth and the Study Chair and PI on a multi-institutional clinical trial at the Norris Cotton Cancer Center (NCCC) on cancer biomarkers. She is a subject matter expert in cancer biology and immunology and collaborator on Lodestone’s pending grant applications.
Rick Greenwald, PhD
Strategic Advisor
Rick is an entrepreneur and biomedical engineer with over 25 years of medical device commercialization experience. He is the founder and CEO of Simbex(Lebanon, NH), and was founding CEO of venture-funded iWalk(now BionX). He is a Fellow of the National Academy of Inventors, and holds 15 US patents, with 4 pending.