Hiroshi Oka
Representative Partner @ Spiral Capital
Tokyo, Japan
Hiroshi Oka is a Series A investor at Spiral Capital in Tokyo focused on Service Industry and Environmental Consulting. Hiroshi Oka is based out of Tokyo and is the General Partner of Spiral Regional Innovation Fund. Hiroshi previously worked at IMJ Corporation as a Leader. Hiroshi Oka attended Chiba University.
- Total investments:
- 12
- Last investment:
- Lead investor:
- 33%
Last updated:
For AI agents: llms.txt
Industries Hiroshi Oka invests in
Stages Hiroshi Oka invests in
Countries Hiroshi Oka invests in
Investment Focus
Industry
- Service Industry 2 (17%)
- Environmental Consulting 2 (17%)
- B2C 1 (8%)
- Pet 1 (8%)
- Retail 1 (8%)
Stage
- Series A 3 (25%)
- Series B 3 (25%)
- Seed 2 (17%)
- Series C 1 (8%)
- Venture - Series Unknown 1 (8%)
Country
- Japan 9 (75%)
- Italy 1 (8%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Piece
|
Piece is a digital real estate investment platform offering the easiest and most transparent way to invest in income-producing real estate in Europe. Our mission is to make real estate ownership inclusive and more accessible. | $1.9M / Seed / Jul 13, 2026 | |
Space BD
|
Space BD aims to become a one-stop shop to respond to all issues related to industrialization of space, and alleviate the work of businesses that are developing new technologies. | $6.8M / Series C / Jun 17, 2026 | |
|
Space BD
|
Space BD aims to become a one-stop shop to respond to all issues related to industrialization of space, and alleviate the work of businesses that are developing new technologies. | $15.4M / Series C / Jan 23, 2026 | |
Ascend
|
Ascend is a logistics company. | $7.1M / Series B / Nov 13, 2025 | |
Otetsutabi
|
Otetsutabi is a regional revitalization platform that offers the opportunity for participants to help at accommodations and breweries in rural areas that struggle with seasonal labor shortages. The locals offer transportation expenses and places to stay in return, so participants can travel to the areas with ease. | $1.4M / Series A / Apr 30, 2025 | |
Inter Holding
|
Inter delivers solutions for global difficulties using vacuum technology, which uses a particular check valve to maintain a 99.5% vacuum rate. | $1.6M / Seed / May 08, 2024 | |
Emulsion Flow Technologies
|
Emulsion Flow Technologies offers rare metal recycling, utilizing emulsion flow technology, emulsion. | $9.2M / Series B / Mar 08, 2024 | |
Orosy
|
Orosy, a Tokyo-based company offering a wholesale marketplace for small retailers to discover and purchase makers, craft brands, smaller manufacturers. Orosy raised $3.4 million in Seed funding. | $2M / Series A / Feb 28, 2024 | |
Nealle
|
Nealle offers business development, business planning and consulting services. | $241M / Series A / Aug 01, 2023 | |
|
Nealle
|
Nealle offers business development, business planning and consulting services. | Series A / May 31, 2023 | |
| See all 12 investments → | |||
Co-Investors
About Spiral Capital
Spiral Capital is a venture capital fund.
Spiral Capital Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Akitomo Naoi
Senior Associate
|
|||
|
Hiroshi Oka
Representative Partner
|
|||
Shuzo Ueki
Associate
|
|||
2 more contacts available
Access 48,091 investors
822 industries, 177 countries. Updated daily. Emails and phones included.
Browse database — It's Free!
Find investors for your startup
Search 48,091 investors by industry and country. Emails and phones included.
Similar Investors
Similar stage
Recommended lists
FAQ
What does Hiroshi Oka invest in?
Hiroshi Oka invests primarily in Service Industry, Environmental Consulting and B2C startups, most often at Series A and Series B stage. Most of the 12 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
When did Hiroshi Oka last invest?
The most recent investment recorded for Hiroshi Oka closed in Jul 2026. Shizune tracks 12 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.
Contact your first 100 investors today
Find who invests in your industry, stage, and country. Download investor list with emails in 5 minutes.
Find investors — It's Free!
Continue with Google
Continue with LinkedIn
