# Ruka Matsubara

> Ruka Matsubara is a Series A investor at JMTC Capital backing Energy and Robotics. See 3 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [JMTC Capital](https://shizune.co/investors/profile/jmtc-capital)
- Total investments: 3
- Last investment: Jul 2024
- Lead investor: 0%
- Last updated: Aug 2026

Ruka Matsubara is a Senior Associate at JMTC Capital.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Energy | 1 | 33% |
| Robotics | 1 | 33% |
| Recycling | 1 | 33% |
| Manufacturing | 1 | 33% |
| Medical Device | 1 | 33% |

10 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 2 | 67% |
| Series B | 1 | 33% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| F.MED | F.MED is a manufacturing company that designs and develops robotic microsurgical devices for the healthcare industry. | $2.7M | Series A | Jul 08, 2024 |  |
| AZUL Energy | AZUL Energy is a next-generation energy device that improves air battery performance, develops air battery-related products, and proposes eco-friendly and comfortable new lifestyles. They discovered that a catalyst electrode containing one of these pigments performed better than platinum carbon or existing catalyst electrode materials. | $2.2M | Series A | Oct 25, 2023 |  |
| LQUOM | QWAVE offers cryptography communication technology. |  | Series B |  |  |

3 of 3 investments shown.

## Co-investors
- [Anritsu Corporation](https://shizune.co/investors/profile/anritsu-corporation) — VC Fund, 1 deal together
- [Bio-sight Capital](https://shizune.co/investors/profile/bio-sight-capital) — VC Fund, 1 deal together
- [Diamond Medino Capital](https://shizune.co/investors/profile/diamond-medino-capital) — VC Fund, 1 deal together
- [FFG Venture Business Partners](https://shizune.co/investors/profile/ffg-venture-business-partners) — VC Fund, 1 deal together
- [Higin Capital](https://shizune.co/investors/profile/higegin-capital) — VC Fund, 1 deal together
- [Mitsubishi UFJ Capital](https://shizune.co/investors/profile/mitsubishi-ufj-capital) — VC Fund, 1 deal together

## About JMTC Capital

VC Fund · Tokyo, Japan

JMTC Capital (JMTCキャピタル) is the venture capital arm of Japan Material Technologies Corporation. It focuses on investments in R&D-oriented hardware startups in areas such as robotics, drones, personal mobility, wearables, AR/VR, and sensing.

2 contacts available at JMTC Capital.

| Name | Title | Profile |
| --- | --- | --- |
| Daiki Noda | Manager | https://shizune.co/investors/profile/daiki-noda |
| Ruka Matsubara | Senior Associate | https://shizune.co/investors/profile/ruka-matsubara |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund

## FAQ

### What does Ruka Matsubara invest in?

Ruka Matsubara invests primarily in Energy, Robotics and Recycling startups, most often at Series A and Series B stage. Most of the 3 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Ruka Matsubara last invest?

The most recent investment recorded for Ruka Matsubara closed in Jul 2024. Shizune tracks 3 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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