# Lee Chang-sun

> Lee Chang-sun is a Series A investor at Quad Ventures backing Industrial. See 1 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Quad Ventures](https://shizune.co/investors/profile/quad-ventures)
- Location: Seoul, South Korea
- Total investments: 1
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/changseon-lee-91872a1a7/

Lee Chang-sun is a Series A investor at Quad Ventures in Seoul focused on Industrial and Electronics. Lee Chang-sun is the Team Leader at Quad Ventures

## Contacts

5 contacts available for Lee Chang-sun: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/lee-chang-sun?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Industrial | 1 | 100% |
| Electronics | 1 | 100% |
| Internet of Things | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Welcon Systems | WELCON Systems is a company that makes electronic control equipment used in machines. Their main products include servo drives and motion controllers, which help control the movement of motors in industrial machines and robots. | $1.4M | Series A |  |  |

1 of 1 investments shown.

## Co-investors
- [Hana Ventures](https://shizune.co/investors/profile/hana-ventures) — VC Fund, 1 deal together

## About Quad Ventures

VC Fund · Seoul, South Korea

Quad Ventures is an investment firm.

2 contacts available at Quad Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Eom Jin-woong | leader | https://shizune.co/investors/profile/eom-jin-woong |
| Lee Chang-sun | Team Leader | https://shizune.co/investors/profile/lee-chang-sun |

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

## FAQ

### What does Lee Chang-sun invest in?

Lee Chang-sun invests primarily in Industrial, Electronics and Internet of Things startups, most often at Series A stage. Most of the 1 investments tracked by Shizune back companies in South Korea. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Lee Chang-sun?

Public channels for Lee Chang-sun include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### 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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