Kotaro Chiba
Founder, General Partner & Chief Executive Officer @ Chiba Dojo
Tokyo, Japan
Kotaro Chiba is a seed investor at Chiba Dojo in Tokyo focused on Information Technology and Content. Kotaro Chiba is the founder of ChibaDojo Fund. Kotaro Chiba attended Keio University.
- Total investments:
- 72
- Last investment:
- Lead investor:
- 7%
Last updated:
For AI agents: llms.txt
Industries Kotaro Chiba invests in
Stages Kotaro Chiba invests in
Countries Kotaro Chiba invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $700k–$30M
- Series A
- $13M–$75M
Investment Focus
Industry
- Information Technology 9 (13%)
- Content 8 (11%)
- Apps 7 (10%)
- Internet 7 (10%)
- Software 7 (10%)
Stage
- Seed 29 (40%)
- Funding Round 10 (14%)
- Series A 8 (11%)
- Angel 6 (8%)
- Series B 5 (7%)
Country
- Japan 58 (81%)
- United States 2 (3%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Paradigm AI is an entertainment firm that produces songs and creates virtual human idols using generative AI. | Seed / Jun 29, 2025 | ||
| Nstock is specialized in developing SAAS based applications for ecosystem. | $21M / Seed / Sep 09, 2024 | ||
| Oyraa provides online meetings and conference apps. Their interpreters will help you communicate not only in business but also in personal situations, such as in hospitals and real estate agencies. | $1.7M / Seed / Jun 10, 2024 | ||
| MOV is a technology platform. They offer SaaS for stores that can collectively manage word-of-mouth sites and visualize and analyze customer feedback. It distributes inbound market data, news, and know-how to domestic companies. Their services include inbound support and consulting. | $9.6M / Series B / May 21, 2024 | ||
| Orange is a developer of a variety of deep-learning models with a focus on computer vision and natural language processing for comics. | $19M / Seed / May 06, 2024 | ||
| Paradigm AI is an entertainment firm that produces songs and creates virtual human idols using generative AI. | Seed / May 03, 2024 | ||
| Japan Wind Tunnel Manufacturing focuses on the development and production of compact wind tunnel testing systems for wind power generators. The company designs technologies that enable stable airflow at shorter tunnel lengths and reduced system size. Its equipment is used for testing and evaluating wind power generation systems and supports thereduction of infrastructure and operational requirements associated with conventional wind tunnel facilities. | $4.4M / Venture - Series Unknown / Sep 01, 2022 | ||
| MediOS is a cloud-based informed consent (IC) assistance system that assists medical professionals in focusing on essential patient explanations. Many doctors respect explanation time and go out of their way to clarify things so that patients can receive therapy with confidence and peace of mind. | $1.2M / Seed / Nov 16, 2021 | ||
| GMO Cyber Security is a software company that specializes in the field of vulnerability diagnosis for applications. It simulates web and cloud service attacks, visualizes attack risks such as personal information leaks and system hijacking, and assesses security resilience. Look into whether there are any security flaws in Android/iOS apps.There are two types of plans: a light plan for only dynamic analysis and a full plan for investigating down to the source code level. In cloud environments such as AWS, Azure, and GCP, a high-performance scanning tool detects issues such as malware, OS and software vulnerabilities, and misconfigurations. | $18.7M / Convertible Note / Dec 08, 2020 | ||
| X Asia creates enjoyable shopping experience. | $24.9M / Seed / Nov 30, 2020 | ||
| See all 72 investments → | |||
Co-Investors
About Chiba Dojo
Chiba Dojo is an entrepreneurial community that supports startup companies in various stages from seed to pre-IPO.
Chiba Dojo Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Kotaro Chiba
Founder, General Partner & Chief Executive Officer
|
|||
|
Kotaro Chiba
Founder, General Partner & Chief Executive Officer
|
|||
Access 48,091 investors
822 industries, 177 countries. Updated daily. Emails and phones included.
Browse database — It's Free!
Find investors for your startup
Search 48,091 investors by industry and country. Emails and phones included.
Similar Investors
Similar industry
Featured in Investor Lists
Recommended lists
FAQ
What does Kotaro Chiba invest in?
Kotaro Chiba invests primarily in Information Technology, Content and Apps startups, most often at Seed and Funding Round stage. Most of the 72 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Kotaro Chiba's check size?
Kotaro Chiba typically joins rounds of $700k–$30M at Seed and $13M–$75M 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 Kotaro Chiba participates in.
How do I contact Kotaro Chiba?
Public channels for Kotaro Chiba include LinkedIn, X (Twitter) and Facebook. 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 Kotaro Chiba last invest?
The most recent investment recorded for Kotaro Chiba closed in Jun 2025. Shizune tracks 72 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.
Contact your first 100 investors today
Find who invests in your industry, stage, and country. Download investor list with emails in 5 minutes.
Find investors — It's Free!
Continue with Google
Continue with LinkedIn
