# Toshi Yamamoto

> Toshi Yamamoto is a seed investor in Sunnyvale backing Apps, Beauty and Health Care. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Location: Sunnyvale, United States
- Total investments: 1
- Last investment: Dec 2019
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/in/chatworktoshi

Toshi Yamamoto is an entrepreneur based in Silicon Valley as CEO of ChatWork Japan and US.In 2000, Toshi bootstrapped a business of web marketing and software sales, and made it profitable for the past 12 years.In 2012, Toshi decided to drive all the resources to focus on its own service, ChatWork, set up a US office and moved to SiliconValley. Toshi changed the company name from EC studio to ChatWork at that time.Toshi has also written three books that have been ranked as #1 of all books on Amazon.co.jp.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Apps | 1 | 100% |
| Beauty | 1 | 100% |
| Health Care | 1 | 100% |
| Artificial Intelligence | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Emol | emol is an application that records emotions and talks with AI robots.emol provide personalized mental and productivity training based on mental data to promote employee well-being and increase employee engagement. | $2.8M | Seed | Dec 02, 2019 |  |

1 of 1 investments shown.

## Co-investors
- [F Ventures](https://shizune.co/investors/profile/f-ventures-e328) — VC Fund, 1 deal together
- [MIRAISE](https://shizune.co/investors/profile/miraise) — VC Fund, 1 deal together

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## FAQ

### What does Toshi Yamamoto invest in?

Toshi Yamamoto invests primarily in Apps, Beauty and Health Care startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Toshi Yamamoto last invest?

The most recent investment recorded for Toshi Yamamoto closed in Dec 2019. 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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