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Rainbow Medical Ltd.
Rainbow Medical Ltd. is a medical device incubator founded by Yossi Gross, based in Herzliya, Israel, with offices in New York and Zug.
Rainbow Medical Ltd.
Rainbow Medical Ltd. operates as a medical device incubator, founded by prolific inventor Yossi Gross, whose prior creations include the Exilis non-invasive fat reduction platform (sold to Bausch Health) and the Elahere ovarian cancer drug (with ImmunoGen). The firm is headquartered in Herzliya, Israel, with additional offices in New York and Zug, Switzerland. The firm identifies early-stage medical device concepts, funds proof-of-concept studies, and spins out standalone companies. Portfolio companies span cardiovascular, neurovascular, ophthalmic, and urologic indications — recent examples include EndoStim for gastroesophageal reflux disease and CardioMEMS for heart failure monitoring (later acquired by St. Jude Medical). Financial terms of these spin-outs are rarely disclosed. Rainbow Medical Ltd. is structured as a privately held company, not a family office in the traditional sense — it does not report AUM or capital commitments. The team size is not publicly listed, but the firm describes itself as an 'innovation engine' supporting 10–15 active portfolio companies at a time. No recent operational events are publicly documented beyond routine portfolio activity. What distinguishes Rainbow Medical Ltd. is its pure incubator model: it does not raise external funds or manage outside capital. Each portfolio company has its own management and funding rounds, while Rainbow provides centralized regulatory, clinical, and manufacturing expertise. This gives it a hybrid profile of a venture builder and a corporate lab, without the fiduciary structure of a family office or asset manager.
General information
Firm type
other
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
Israel
City
Herzliya
Corporate office
Herzliya, Israel
Additional offices
New York, NY, United States · Zug, Switzerland
Principals
Yossi Gross
Founder & Chairman
Sector focus
Frequently asked questions
What is Rainbow Medical Ltd.'s investment model?
Rainbow Medical Ltd. operates as an incubator, not a conventional investment fund or family office. It provides shared resources — regulatory expertise, clinical trial management, manufacturing — to a portfolio of early-stage medical device companies. Each spin-out raises its own external capital; Rainbow does not manage third-party funds or disclose its own balance sheet.
Who founded Rainbow Medical Ltd., and what is their background?
Rainbow Medical Ltd. was founded by Yossi Gross, an Israeli medical device inventor. Gross has over 350 patents and has founded dozens of companies, including Exilis (aesthetic devices, sold to Bausch Health) and Moberg Pharma. His work spans cardiovascular, neurovascular, and aesthetic medicine, and he serves as Chairman of Rainbow Medical Ltd.
What types of medical devices does Rainbow Medical Ltd. focus on?
Rainbow Medical Ltd.'s portfolio companies focus on a range of therapeutic areas, including cardiology, neurology, ophthalmology, and urology. Specific technologies have included heart failure monitoring, gastroesophageal reflux devices, and AI-driven coronary imaging. The incubator typically targets minimally invasive therapies with significant clinical unmet need.
Is Rainbow Medical Ltd. a family office?
No. Rainbow Medical Ltd. does not fit the standard family office structure. It is a privately held medical device incubator. The firm does not manage external assets, report AUM, or serve as a wealth management vehicle for a single family. It operates more like a venture builder, generating returns through exits of its portfolio companies.
Does Rainbow Medical Ltd. invest in early-stage or later-stage companies?
Rainbow Medical Ltd. exclusively incubates early-stage technologies — typically at the concept or pre-clinical stage. It funds initial development through proof-of-concept and then spins out each technology as a separate company, which then raises its own series A or B rounds from external investors.
Where is Rainbow Medical Ltd. based, and what is its geographic footprint?
Rainbow Medical Ltd. is headquartered in Herzliya, Israel, with additional offices in New York, United States, and Zug, Switzerland. The firm leverages Israeli R&D talent in medical devices while maintaining a U.S. presence for regulatory and commercial development.
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