Our Team

Meet Crestone’s founders, senior management, and advisors.

Urs Ochsner, Ph.D.

Co-Founder / CEO

With over 20 years of experience in infectious diseases, Dr. Ochsner is a co-founder and Vice President, R&D, and CEO at Crestone.

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Thale Jarvis, Ph.D.


With 25 years of experience in biotechnology, Dr. Jarvis is a co-founder, Science Advisor, and former Chief Scientific Officer at Crestone.

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John Rohloff, Ph.D.


With 25 years of experience in Medicinal and Process Chemistry, Dr. Rohloff serves as Senior Chemistry Advisor at Crestone.

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Nebojsa Janjic, Ph.D.


Previously a founder and CSO of Replidyne, Inc., Dr. Janjic is a co-founder and Chairman of the Board of Directors at Crestone.

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Xicheng Sun, Ph.D.

Vice President

Prior to his current appointment, Dr Sun was an executive director of chemistry and CFTR modulator team leader at N30 Pharmaceuticals.

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Donald Morrissey, J.D.

Vice President

Vice President, Corporate Development at Crestone, Don brings over 20 years of experience as a business executive and attorney in the life sciences.

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John Bruss, M.D., M.B.A.

Medical Advisor

Dr. Bruss is an infectious disease specialist with over 20 years of experience in clinical drug development and research.

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William Bracken, Ph.D., DABT

Consultant, Toxicology

Bill had a lengthy career at AbbVie where he had management responsibilities for their drug development portfolio and marketed products.

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Wendy Ribble, PMP

Associate Director, Program Management

Wendy brings over 20 years’ experience in the pharmaceutical and cleantech industries as both a research scientist and project manager.

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Cliff Mason, Ph.D.

Associate Director, Pharmacology

Cliff has over a decade of professional experience in Pharmaceutical Sciences and has authored or co-authored over 20 peer-reviewed publications.

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Aline Oliver

Consultant, Regulatory Affairs

Aline Oliver is a Quality Assurance and Regulatory Affairs Consultant at Crestone and Owner/Principal Consultant for Oliver Consulting, LLC.

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Arlee Kachensky

Consultant, Quality Assurance

With expertise is in cGMP/GLP compliance, Arlee has worked in the pharmaceutical industry since 1986 and with Crestone since March 2020.

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Become a Part of Our Projects

Interested in helping further our research into novel antibacterial agents? We’d be thrilled to have your help, either as an investor, a team member, or a participant in our ongoing clinical studies.


Have a question or comment? Follow the link below to contact us about general inquiries.


Find work in a challenging, team-oriented environment with competitive salaries.

Clinical Studies

Learn how you can become part of our ongoing clinical study to fight deadly GI tract infections.