Seio Nagami
Angel Investor
Tokyo, Japan
Seio Nagami is a seed investor in Tokyo focused on Task Management and Information Technology. Seio Nagami
- Total investments:
- 6
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Seio Nagami invests in
Stages Seio Nagami invests in
Countries Seio Nagami invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $934k–$944k
- Series A
- $1.4M–$4.6M
Investment Focus
Industry
- Task Management 2 (33%)
- Information Technology 2 (33%)
- SaaS 1 (17%)
- Legal 1 (17%)
- Energy 1 (17%)
Stage
- Seed 3 (50%)
- Series A 2 (33%)
- Angel 1 (17%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Stock develops solutions to eliminate the stress of information sharing for non-IT companies. | $943.7K / Seed / Sep 08, 2020 | ||
| OVERFLOW provides consulting and recruitment services. | $934K / Seed / Mar 03, 2020 | ||
| enechain provides liquidity in Japan’s energy market by brokering OTC transactions of energy. | Angel / Nov 01, 2019 | ||
| Wakaze is a supplier of craft sake beer. They provide products that include beer, other alcoholic beverages, food products, snacks, and drinks. They provide products that are available for online shopping. An online inquiry form is available on the company's website. | $1.4M / Series A / Jun 19, 2019 | ||
| MI-6 is a research, development, consulting, and project management for material development using IT. We will promote materials informatics in the field of material development with our technological capabilities and a wealth of project knowledge that challenge the world's most advanced technologies . | Seed / Apr 24, 2019 | ||
| Holmesis a cloud contract system to consistently carry out the creation, conclusion and management of contracts in the cloud. | $4.6M / Series A / Nov 01, 2018 |
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FAQ
What does Seio Nagami invest in?
Seio Nagami invests primarily in Task Management, Information Technology and SaaS startups, most often at Seed and Series A stage. Most of the 6 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Seio Nagami's check size?
Seio Nagami typically joins rounds of $934k–$944k at Seed and $1.4M–$4.6M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Seio Nagami participates in.
How do I contact Seio Nagami?
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.
When did Seio Nagami last invest?
The most recent investment recorded for Seio Nagami closed in Sep 2020. Shizune tracks 6 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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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