# KCK

> KCK is a VC fund in New York backing Health Care and Medical Device. See 38 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: New York, United States
- Total investments: 38
- Last investment: Feb 2023
- Lead investor: 42%
- Last updated: Aug 2026

KCK is a family investment fund that invests in a diverse set of industries, including medical technologies. KCK interests in Life Sciences - Biopharm/ Biotech & MedTech, Energy, Science-rich companies and Industrial Technologies. KCK invest at all stages of a startup's from early stage to growth rounds and also invest in publiccompanies. KCK is the private equity arm of a family office which seeks to partner with experienced management teams, focused on niche markets, deploying long-term flexible capital to generate high risk-adjusted returns.

## Contacts

5 contacts available for KCK. Shizune tracks 2 team members at KCK. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/kck?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Series C | $44M–$100M |
| Series D | $31M–$100M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Health Care | 9 | 24% |
| Medical Device | 7 | 18% |
| Biotechnology | 6 | 16% |
| Medical | 4 | 11% |
| Mobile | 3 | 8% |

47 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series C | 6 | 16% |
| Funding Round | 6 | 16% |
| Series D | 5 | 13% |
| Series B | 4 | 11% |
| Private Equity | 3 | 8% |

10 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 14 | 37% |
| Ireland | 2 | 5% |
| India | 1 | 3% |
| Israel | 1 | 3% |
| Germany | 1 | 3% |

6 countries tracked in total.

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Greg Garfield | Senior Managing Director | 7 | https://shizune.co/investors/profile/greg-garfield |
| Nael Kassar | Founder | 0 | https://shizune.co/investors/profile/nael-kassar |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Chain Reaction | Chain Reaction is engineering the future of disruptive blockchain and privacy technologies. They accelerate compute performance, enabling companies to adopt and scale solutions to the world’s most complex problems.EL3CTRUM is their Blockchain product line, starting with the most efficient hashing ASIC on the market, optimized forhigh-performance, high efficiency, and low-power, and is the heart of their hashboards and systems. EL3CTRUM delivers optimal payback time.3PU™ is their Privacy product, dramatically accelerating real-time operations of Privacy Enhancing Technologies on encrypted data, transforming the cloud into a trusted environment, and enabling new verticals to adopt the cloud at scale, including financial institutions, healthcare & big pharma, defense & government, oil & gas, and more. Purpose-built and custom-designed, their solutions power the next generation of secure, scalable, green computing to help protect people, privacy, and the planet. | $70M | Series C | Feb 23, 2023 |  |
| Chain Reaction | Chain Reaction is engineering the future of disruptive blockchain and privacy technologies. They accelerate compute performance, enabling companies to adopt and scale solutions to the world’s most complex problems.EL3CTRUM is their Blockchain product line, starting with the most efficient hashing ASIC on the market, optimized forhigh-performance, high efficiency, and low-power, and is the heart of their hashboards and systems. EL3CTRUM delivers optimal payback time.3PU™ is their Privacy product, dramatically accelerating real-time operations of Privacy Enhancing Technologies on encrypted data, transforming the cloud into a trusted environment, and enabling new verticals to adopt the cloud at scale, including financial institutions, healthcare & big pharma, defense & government, oil & gas, and more. Purpose-built and custom-designed, their solutions power the next generation of secure, scalable, green computing to help protect people, privacy, and the planet. | $70M | Series C | Feb 23, 2023 |  |
| Dubizzle Group | The Emerging Markets Property Group (EMPG) owns and operates bespoke property verticals in emerging markets, primarily in the Middle East and South Asia. The group’s flagship ventures are Bayut.com in the UAE, Zameen.com in Pakistan and Bproperty.com in Bangladesh.They disrupt traditional processes in emerging markets by introducing solutionsthat make property searching faster, easier, and simpler. Their competitive advantage comes from the tremendous value they add to the businesses that work with their portals, and the significant ease we provide to end users.At EMPG, they are not interested in maintaining the status quo. Their property verticals in emerging markets completely redefine the way the property business is done there, and they are especially tuned into the unique requirements of these markets because they are borne of one. | $200M | Private Equity | Oct 27, 2022 |  |
| Wunder Mobility | Wunder Mobility is a software and hardware provider for vehicle sharing. Its highly customizable and deeply integrated software solution is complemented by a sharing-ready vehicle program built in partnership with manufacturers. | $11.9M | Series B | Oct 05, 2022 |  |
| Aerin Medical | Aerin Medical is a health technology company that develops therapeutic devices to improve nasal breathing. Its device utilizes low-power radiofrequency energy to remodel nasal soft tissues and address the underlying cause of nasal congestion, enabling patients suffering from nasal breathing disorders to open their nasal airway quickly, safely, andeffectively. | $60M | Private Equity | Jun 16, 2022 |  |
| Chain Reaction | Chain Reaction is engineering the future of disruptive blockchain and privacy technologies. They accelerate compute performance, enabling companies to adopt and scale solutions to the world’s most complex problems.EL3CTRUM is their Blockchain product line, starting with the most efficient hashing ASIC on the market, optimized forhigh-performance, high efficiency, and low-power, and is the heart of their hashboards and systems. EL3CTRUM delivers optimal payback time.3PU™ is their Privacy product, dramatically accelerating real-time operations of Privacy Enhancing Technologies on encrypted data, transforming the cloud into a trusted environment, and enabling new verticals to adopt the cloud at scale, including financial institutions, healthcare & big pharma, defense & government, oil & gas, and more. Purpose-built and custom-designed, their solutions power the next generation of secure, scalable, green computing to help protect people, privacy, and the planet. | $70M | Series C | May 01, 2022 |  |
| RefleXion Medical | RefleXion is developing the first biology-guided radiotherapy system, a significant change in strategy from single tumor therapy to the ability to one day treat multiple tumors in the same treatment session in cancers that have metastasized. Currently, the RefleXion X1 machine is cleared for the delivery of stereotactic body radiotherapy (SBRT),stereotactic radiosurgery (SRS) and intensity modulated radiotherapy (IMRT). The company is also developing BgRT, which incorporates positron-emission tomography (PET) imaging data to enable tumors to continuously signal their location. The BgRT technology will synchronize these data with the linear accelerator to direct radiotherapy to tumors with subsecond latency. | $80M |  | Mar 10, 2022 |  |
| RefleXion Medical | RefleXion is developing the first biology-guided radiotherapy system, a significant change in strategy from single tumor therapy to the ability to one day treat multiple tumors in the same treatment session in cancers that have metastasized. Currently, the RefleXion X1 machine is cleared for the delivery of stereotactic body radiotherapy (SBRT),stereotactic radiosurgery (SRS) and intensity modulated radiotherapy (IMRT). The company is also developing BgRT, which incorporates positron-emission tomography (PET) imaging data to enable tumors to continuously signal their location. The BgRT technology will synchronize these data with the linear accelerator to direct radiotherapy to tumors with subsecond latency. | $80M | Series E | Mar 10, 2022 |  |
| Mainspring Energy | Mainspring Energy is engineering advanced technology to revolutionize the way electricity is generated and delivered | $95M | Series D | May 04, 2021 |  |
| Crusoe | Crusoe is on a mission to help the oil industry reduce routine flaring of natural gas. They are passionate about creating solutions that benefit the environment, local communities, and energy producers.Crusoe Energy Systems provides oil and gas companies with a fast, low cost and simple solution to natural gas flaring. As the energy industrystruggles with pipeline constraints and increasing regulations around flaring and combusting, Crusoe is here to help. Their service lets operators preserve or regain regulatory compliance, maintain existing production and facilitate future development. | $128M | Series B | Apr 26, 2021 |  |

10 of 38 investments shown.

## Co-investors
- [Sofinnova Partners](https://shizune.co/investors/profile/sofinnova-partners) — VC Fund, 6 deals together
- [Ally Bridge Group](https://shizune.co/investors/profile/ally-bridge-group) — VC Fund, 5 deals together
- [Pfizer Venture Investments](https://shizune.co/investors/profile/pfizer-venture-investments) — VC Fund, 5 deals together
- [Venrock](https://shizune.co/investors/profile/venrock) — VC Fund, 5 deals together
- [Exor Ventures](https://shizune.co/investors/profile/exor-seeds) — VC Fund, 4 deals together
- [Jerusalem Venture Partners (JVP)](https://shizune.co/investors/profile/jerusalem-venture-partners) — VC Fund, 4 deals together

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## FAQ

### What does KCK invest in?

KCK invests primarily in Health Care, Medical Device and Biotechnology startups, most often at Series C and Funding Round stage. Most of the 38 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is KCK's check size?

KCK typically joins rounds of $44M–$100M at Series C and $31M–$100M at Series D. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds KCK participates in.

### How do I contact KCK?

For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at KCK?

The team at KCK includes Greg Garfield (Senior Managing Director) and Nael Kassar (Founder). The Team section lists each member with their title, investment count and links.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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