John O'Brien
Managing Director/ Founder & Owner @ Sematron
John O'Brien is a seed investor at Sematron focused on Financial Services and Financial Exchanges. John O'Brien
- Total investments:
- 1
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries John O'Brien invests in
Stages John O'Brien invests in
Countries John O'Brien invests in
Investment Focus
Industry
- Financial Services 1 (100%)
- Financial Exchanges 1 (100%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Stablehouse
|
Stablehouse is a payment and FX exchange platform for stablecoins. | $2.2M / Seed / Oct 29, 2020 |
Co-Investors
About Sematron
Sematron Contacts
| Name | Phone | Socials | |
|---|---|---|---|
|
John O'Brien
Managing Director/ Founder & Owner
|
|||
4 more contacts available
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FAQ
What does John O'Brien invest in?
John O'Brien invests primarily in Financial Services and Financial Exchanges startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in Bermuda. The Investment Focus section breaks down every industry, stage and country in the portfolio.
When did John O'Brien last invest?
The most recent investment recorded for John O'Brien closed in Oct 2020. 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 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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