Douglas E. Onsi
Managing Director @ HealthCare Ventures
Boston, United States
Douglas E. Onsi is a Series A investor at HealthCare Ventures in Boston focused on Health Care and Biotechnology. Mr. Onsi has served as our Chief Financial Officer, Treasurer and Secretary since our inception in 2011. Mr. Onsi has been at HealthCare Ventures since 2007, including serving as a managing director since 2009 and the chief executive officer of Tensha Therapeutics, Inc. which was sold to Roche Holdings, Inc. in 2016. Prior to joining HealthCareVentures, Mr. Onsi was at Genzyme Corporation, or Genzyme, where he served in roles as Vice President, Campath Product Operations and Portfolio Management, Oncology from 2005 to 2007 and as Vice President, Business Development from 2004 to 2005. Prior to Genzyme, he was Chief Financial Officer of Tolerx, Inc., a venture capital funded biotechnology company, from 2001 to 2004. Before joining Tolerx, Inc., he was in business development at LeukoSite, a publicly traded biopharmaceutical company that was acquired by Millennium Pharmaceuticals, Inc. He began his career as an attorney at Bingham Dana LLP. Mr. Onsi currently serves as a member of the board of directors of Vaxxas Pty Ltd., a privately-held biotechnology company. He received a Juris Doctor degree from the University of Michigan Law School and a B.S. in biological sciences from Cornell University.
- Total investments:
- 1
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Douglas E. Onsi invests in
Stages Douglas E. Onsi invests in
Countries Douglas E. Onsi invests in
Contacts
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Investment Focus
Industry
- Health Care 1 (100%)
- Biotechnology 1 (100%)
- Medical Device 1 (100%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Vaxxas develops and commercializes needle-free vaccine delivery system. Vaxxas was incorporated in 2011 and is based in Brisbane, Australia. | $10.1M / Series A / Aug 02, 2011 |
Co-Investors
About HealthCare Ventures
HealthCare Ventures is a leading life science venture capital firm investing in pre-clinical or early clinical stage, focused companies with potential to transform patient care.
HealthCare Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
James H. Cavanaugh
Managing Director
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John Littlechild
Managing Director & General Partner
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Christopher K. Mirabelli
Managing Director
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Douglas E. Onsi
Managing Director
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Harold Werner
Co-Founder & Managing Director
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FAQ
What does Douglas E. Onsi invest in?
Douglas E. Onsi invests primarily in Health Care, Biotechnology and Medical Device startups, most often at Series A stage. Most of the 1 investments tracked by Shizune back companies in Australia. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Douglas E. Onsi?
Public channels for Douglas E. Onsi include LinkedIn 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.
When did Douglas E. Onsi last invest?
The most recent investment recorded for Douglas E. Onsi closed in Aug 2011. Shizune tracks 1 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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