# ONSET Ventures

> ONSET Ventures is a VC fund backing Health Care and Medical Device. See 87 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Menlo Park, United States
- Total investments: 87
- Last investment: Mar 2018
- Lead investor: 11%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/onset-ventures
- X (Twitter): http://twitter.com/ONSETVentures
- Website: http://www.onset.com
- Facebook: http://www.facebook.com/pages/Menlo-Park-CA/ONSET-Ventures/11840

ONSET Ventures is a private equity firm that offers early- and later-stage investment services to firms in the IT and medical technology industries. It was founded by David Kelley, Michael Levinthal, and Terry Opdendyk and is based in California.

## Contacts

5 contacts available for ONSET Ventures. Shizune tracks 8 team members at ONSET Ventures. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/onset-ventures?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Series A | $6M–$15M |
| Series B | $5.1M–$20M |
| Series C | $5M–$36M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Health Care | 16 | 18% |
| Medical Device | 12 | 14% |
| Biotechnology | 11 | 13% |
| Software | 8 | 9% |
| Medical | 6 | 7% |

68 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 20 | 23% |
| Series C | 16 | 18% |
| Series A | 13 | 15% |
| Series D | 11 | 13% |
| Funding Round | 8 | 9% |

9 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 38 | 44% |
| India | 1 | 1% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Robert Kuhling | General Partner and Managing Director | 9 | https://shizune.co/investors/profile/robert-f-kuhling-jr |
| Shomit Ghose | General Partner | 12 | https://shizune.co/investors/profile/shomit-ghose |
| Beatrice Pezino | CFO | 0 | https://shizune.co/investors/profile/beatrice-pezino |
| Jennifer Lewis | Vice President of Marketing & Communications | 0 | https://shizune.co/investors/profile/jennifer-lewis-4 |
| John Ryan | Managing Director & Partner | 9 | https://shizune.co/investors/profile/john-ryan-3 |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Imanis Data | Imanis Data is a venture backed Silicon Valley startup company operating in stealth mode. Our world-class team with deep storage and big data experience has embarked on building the next-generation data management platform that will disrupt the big data and storage industry. Stay tuned for news on our amazing company and industry-changing productsas we get out of stealth mode. | $13.5M | Series B | Mar 05, 2018 |  |
| Nok Nok Labs | Nok Nok Labs is a security platform that provides online authentication solutions for organizations. The company is backed by a team of security industry veterans from PGP, Netscape, PayPal & Phoenix, and has deep experience in building Internet-scale security protocols and products. The company’s ambition is to fundamentally transformauthentication by enabling end-to-end trust across the web using authentication methods that are natural to end-users and provide strong proof of identity. Their solutions will remediate and unify the authentication silos that exist today, and provide organizations with greater flexibility to utilize strong authentication solutions in adaptable ways. Nok Nok Labs' technology solutions will allow companies to scale their authentication systems to meet the challenges posed by the rapid growth of users utilizing different Internet-connected devices, performing a wide range of online transactions.Nok Nok Labs, based in Palo Alto, California, was founded in November 2011 to transform online authentication for modern computing. | $8M | Series D | Jul 11, 2017 |  |
| Vertos Medical | Vertos Medical is a healthcare company that offers medical devices used in the treatment of common spinal diseases. The company commercializes the percutaneous treatment for lumbar spinal stenosis (LSS). It also offers minimally invasive lumbar decompression devices for the treatment of various forms of LSS. The company offers its devices in theUnited States. Vertos Medical was founded by Dr. Dave Solsberg and Dr. Don Schomer in 2005 and is headquartered in Aliso Viejo, California. | $28M |  | Jun 12, 2017 |  |
| Neuronetics | Neuronetics is focused on developing non-invasive therapies for psychiatric and neurological disorders using MRI-strength magnetic field pulses. They are the first and only company to have a non-systemic and non-invasive depression treatment cleared by the FDA for patients who have not benefited from prior antidepressant treatment. | $15M | Series G | Jun 06, 2017 |  |
| Apama Medical | Apama Medical, Inc. was incorporated in 2009 and is based in Saratoga, California. | $13M | Series C | Nov 16, 2016 |  |
| Gridstore | Gridstore™ is the leader in HyperConverged All-Flash Infrastructure for the Microsoft Cloud-Inspired Data Center. Our customers gain a 10X performance improvement over traditional storage as we put all-flash as close to the workload as possible. They realize 4X lower TCO by consolidation of three layers of infrastructure into one scalable layerbuilt on X86 hardware and 10X less management effort due to less management points and less infrastructure to manage. Gridstore's HyperConverged Appliances include both compute and storage in a single system, and provide external storage and work with any Windows servers and the HyperConverged Appliance, all driven by Gridstore's patented software. Gridstore software architecture delivers native Windows integration, per-VM I/O control, and elastic and independent scaling of resources. Gridstore is headquartered in Mountain View, CA. and its products and services are available through a global network of value-added resellers. | $19M | Series B | Jan 27, 2016 |  |
| BAROnova | BAROnova, founded in 2006 and based in Goleta, CA, is a clinical-stage medical-device company focused on developing non-surgical non-pharmacologic devices to induce weight loss. | $36.5M | Series D | Nov 23, 2015 |  |
| Polymorph | Polymorph powers the monetization infrastructure for modern enterprises. Polymorph is a white-label SaaS monetization platform for publishers to maximize revenue, reduce costs and deliver better ad experiences.The Polymorph platform offers end-to-end ad serving stack, yield optimization tools, APIs, access to demand on server-side and self-serveworkflows. Modern enterprises who want to monetize with advertising choose our customizable and developer friendly platform as it aligns with their needs/strategies.The company was founded in 2013 and is based in San Francisco, California. | $12M | Series A | Sep 24, 2015 |  |
| ADARA | Adara, the global leader in permissioned data and verified identity, combines the power of global data consortiums to inform its 1 billion digital identities with over 22 billion data elements across 130 countries and serving Global 2,000 customers. Whether informing digital marketing, programmatic advertising, search, identity and verification, orstopping fraud, Adara provides you with more customers, less friction, and better outcomes. For more information, visit us at www.ADARA.com. | $23M | Series C | Sep 14, 2015 |  |
| Nok Nok Labs | Nok Nok Labs is a security platform that provides online authentication solutions for organizations. The company is backed by a team of security industry veterans from PGP, Netscape, PayPal & Phoenix, and has deep experience in building Internet-scale security protocols and products. The company’s ambition is to fundamentally transformauthentication by enabling end-to-end trust across the web using authentication methods that are natural to end-users and provide strong proof of identity. Their solutions will remediate and unify the authentication silos that exist today, and provide organizations with greater flexibility to utilize strong authentication solutions in adaptable ways. Nok Nok Labs' technology solutions will allow companies to scale their authentication systems to meet the challenges posed by the rapid growth of users utilizing different Internet-connected devices, performing a wide range of online transactions.Nok Nok Labs, based in Palo Alto, California, was founded in November 2011 to transform online authentication for modern computing. |  | Series C | Aug 25, 2015 |  |

10 of 87 investments shown.

## Co-investors
- [Three Arch Partners](https://shizune.co/investors/profile/three-arch-partners) — VC Fund, 11 deals together
- [Intel Capital](https://shizune.co/investors/profile/intel-capital) — VC Fund, 6 deals together
- [Norwest](https://shizune.co/investors/profile/norwest-venture-partners) — VC Fund, 6 deals together
- [Pitango VC](https://shizune.co/investors/profile/pitango-venture-capital) — VC Fund, 6 deals together
- [Accel](https://shizune.co/investors/profile/accel) — VC Fund, 5 deals together
- [Arboretum Ventures](https://shizune.co/investors/profile/arboretum-ventures) — VC Fund, 5 deals together

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## FAQ

### What does ONSET Ventures invest in?

ONSET Ventures invests primarily in Health Care, Medical Device and Biotechnology startups, most often at Series B and Series C stage. Most of the 87 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 ONSET Ventures's check size?

ONSET Ventures typically joins rounds of $6M–$15M at Series A, $5.1M–$20M at Series B and $5M–$36M at Series C. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds ONSET Ventures participates in.

### How do I contact ONSET Ventures?

Public channels for ONSET Ventures include LinkedIn, X (Twitter) and the website linked on this profile. 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 ONSET Ventures?

The team at ONSET Ventures includes Robert Kuhling (General Partner and Managing Director), Shomit Ghose (General Partner) and Beatrice Pezino (CFO), among 8 team members tracked by Shizune. 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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