Investor profile
Sean O'Neill
Corporate VC, Private equity & Member of the Board of Overseers at Boston Children's Hospital, Founder and Managing Partner at Old Ironsides Energy
Sean O'Neill works as a Member of the Board of Overseers at Boston Children's Hospital. The firm's known portfolio counts 6 companies.
Is Sean O'Neill a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
- Sector
- ClimateHealthcare
- Focus
- DiagnosticsDigital HealthEnergy Private EquityGenomicsHealthcare OperationsMedTechMental HealthMidstreamOil & GasTelemedicine
Contacts
Affiliated funds' portfolios
Member of the Board of Overseers at Boston Children's Hospital, whose known portfolio counts 6 companies
- Brightline
- Ryse Health
- Dock Health
- Zarminali Health
- Circulation
- Claritas Genomics
Founder and Managing Partner at Old Ironsides Energy, whose known portfolio counts 4 companies
- Cavalcade Midstream
- Caerus Oil and Gas
- Laredo Energy
- Moray Energy
Investor Profile
Founders in the listed sectors Climate and Healthcare, and focus areas Diagnostics, Digital Health, Energy Private Equity and Genomics fall inside that listing.
Boston Children's Hospital appears in Growth, Late-Stage and Seed rounds across its known deals.
The firm portfolio and the focus above give founders context on whether Sean O'Neill matches their raise.
Colleagues
Frequently asked questions
Who is Sean O'Neill?
Sean O'Neill is a corporate venture investor and private equity investor based in Boston, Massachusetts, United States, listed as Member of the Board of Overseers at Boston Children's Hospital. The known portfolio of that firm counts 6 companies. That portfolio belongs to the firm, not to Sean O'Neill personally.
What does Sean O'Neill invest in?
Listed sectors include Climate and Healthcare; listed focus areas include Diagnostics, Digital Health, Energy Private Equity and Genomics. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Sean O'Neill invest at?
Boston Children's Hospital appears in Growth, Late-Stage and Seed rounds across its known deals, and Sean O'Neill is listed there as Member of the Board of Overseers. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Sean O'Neill listed at?
Sean O'Neill is listed as Member of the Board of Overseers at Boston Children's Hospital. 4 other people in the database share a firm with Sean O'Neill.
How do I contact Sean O'Neill?
An email address, a phone number and a LinkedIn page are on file for Sean O'Neill. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
Skip the browsing. Let AI find your ideal investors in one minute.
Paste your startup website and AI picks your best-fit investors out of 135,000+ profiles.
Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal