# Koji Tsukamoto

> Koji Tsukamoto is a startup investor at Yahoo! Japan. See 0 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Yahoo! Japan](https://shizune.co/investors/profile/yahoo-japan)
- Last updated: Aug 2026

Koji Tsukamoto is a startup investor at Yahoo! Japan. Koji Tsukamoto - EVP, Corporate Officer @ Yahoo! Japan

## About Yahoo! Japan

VC Fund · Tokyo, Japan

Yahoo! Japan is a technology company that operates an online ecosystem spanning search, e-commerce, communications, media, and digital services. Its platform offers web search, email, news, finance, weather, maps, and entertainment content, serving as a gateway for users accessing information and online tools. The company also manages marketplaces,payment services, and advertising solutions that support both consumers and businesses.

5 contacts available at Yahoo! Japan.

| Name | Title | Profile |
| --- | --- | --- |
| Hide Makoto | Executive Officer | https://shizune.co/investors/profile/hide-makoto |
| Koji Tsukamoto | EVP, Corporate Officer | https://shizune.co/investors/profile/tsukamoto-koji |
| Ryosuke Sakagami | Chief Financial Officer | https://shizune.co/investors/profile/ryosuke-sakaue |
| Takao Ozawa | COO, Director, Executive Vice President | https://shizune.co/investors/profile/takao-ozawa |
| Akiko Takeda | Senior Marketing Manager | https://shizune.co/investors/profile/akiko-takeda |

## FAQ

### 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.

# About Shizune
Shizune.co is an investor database. Core features:
- 48,091 startup investors (angels, VCs, accelerators, and others)
- Email, phone, LinkedIn (for intros), socials, and other contact data
- Updated daily from public funding news
- CSV and Excel export

The User can access the full database FOR FREE after signing up: shizune.co