# John O’Shaughnessy

> John O’Shaughnessy is a funding round investor backing Medical. See 2 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Total investments: 2
- Last investment: Feb 2024
- Lead investor: 0%
- Last updated: Aug 2026

John O’Shaughnessy is a funding round investor focused on Medical and Health Diagnostics. John has over 30 years experience in the medical device industry and is one of the most experienced medical device leaders in Ireland. He ran Medtronic’s cardiovascular business in Galway for 15 years and was the founder and CEO of MedNova Ltd. MedNova pioneered embolic protection for endovascular treatment of carotid artery disease and gainedworldwide approval for its products. John serves as Chairman of Vistamed Limited and Cambus Teoranta, and he served as Non-Executive Director of IDA Ireland from 1995 to 2000. He was a founder of Croi, the West of Ireland Cardiac Foundation, a voluntary organization to support the fight against heart disease and stroke.

## Contacts

5 contacts available for John O’Shaughnessy: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/john-oshaughnessy?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Medical | 1 | 50% |
| Health Diagnostics | 1 | 50% |

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Funding Round | 1 | 50% |
| Venture - Series Unknown | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Ceroflo | Ceroflo offers revolutionary advancement in the treatment of Intracranial Atherosclerotic Disease. | $7M |  | Feb 04, 2024 | https://www.ceroflo.com/ |
| Ceroflo | Ceroflo offers revolutionary advancement in the treatment of Intracranial Atherosclerotic Disease. | $6.9M | Venture - Series Unknown | Feb 04, 2024 | https://www.ceroflo.com/ |

2 of 2 investments shown.

## Co-investors
- [DHKN](https://shizune.co/investors/profile/dhkn) — VC Fund, 1 deal together

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### Similar country
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## Featured in investor lists
- [Medical Angel Investors in Ireland](https://shizune.co/investors/medical-angel-investors-ireland)
- [Health Care Angel Investors in Ireland](https://shizune.co/investors/health-care-angel-investors-ireland)

## FAQ

### What does John O’Shaughnessy invest in?

John O’Shaughnessy invests primarily in Medical and Health Diagnostics startups, most often at Funding Round and Venture - Series Unknown stage. Most of the 2 investments tracked by Shizune back companies in Ireland. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact John O’Shaughnessy?

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.

### When did John O’Shaughnessy last invest?

The most recent investment recorded for John O’Shaughnessy closed in Feb 2024. Shizune tracks 2 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### 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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