Charles Jonscher
Senior Partner, Health Practice at Clairfield International
Geneva, United Kingdom
Charles Jonscher, Senior Partner, Health Practice at Clairfield International is an active investor based in Geneva, United Kingdom. This profile covers what Charles Jonscher backs, at which stage, and how founders can reach out in 2026.
Dr. Charles Jonscher serves as Senior Partner at Clairfield International. Dr. Charles Jonscher is the Founder and serves as President at CET. He serves as Chairman at OncoCiDia. He served as Chief Investment Officer at Innoveas. He also served as a Board Member at Rubik's Brand. Mr. Jonscher has 30 years' experience in Corporate Finance and M&A. He became President of CET since 1990 and was a Partner at Booz Allen and Hamilton (1987-90). Mr. Jonscher holds a BA in Electrical Sciences from Cambridge University and an MA and Ph.D. in Economics from Harvard University.
- Investor type
- AngelPEInvestment Bank
- Stages
- Early Stage Venture
- Invests in
- Healthcare & BiotechBiotech & Pharma
- Location
- Geneva, United Kingdom
- Typical check
- $500K
- Past investments
- 1
Notable investments
How to reach Charles Jonscher
Angels and operators like Charles Jonscher reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded Accelerator.
Connect with Charles Jonscher
Frequently Asked Questions
What does Charles Jonscher invest in?
Charles Jonscher invests in Healthcare & Biotech and Biotech & Pharma, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Charles Jonscher invest at?
Charles Jonscher typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Charles Jonscher's typical check size?
Charles Jonscher typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do I contact Charles Jonscher?
Unlock Charles Jonscher's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.