Mamoru Taniya
Angel Investor @ D4V
Hong Kong, Hong Kong
Mamoru Taniya is a seed investor at D4V in Hong Kong focused on Apps and Content. After graduating from the Faculty of Law at the University of Tokyo, he joined Solomon Brothers, where he became the youngest managing director in Asia, where he was in charge of Asian investment. After that, he created one of the largest independent Asuka assets. He also launched Japan's first independent online life insurance company,LifeNet Life Insurance, and inspired Japan's first International.
- Total investments:
- 26
- Last investment:
- Lead investor:
- 8%
Last updated:
For AI agents: llms.txt
Industries Mamoru Taniya invests in
Stages Mamoru Taniya invests in
Countries Mamoru Taniya invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $2.1M–$28M
- Angel
- $2.1M–$20M
- Series A
- $2.3M–$47M
Investment Focus
Industry
- Apps 4 (15%)
- Content 4 (15%)
- FinTech 3 (12%)
- Internet 3 (12%)
- Software 3 (12%)
Stage
- Seed 13 (50%)
- Series A 5 (19%)
- Angel 3 (12%)
- Funding Round 2 (8%)
- Series B 1 (4%)
Country
- Japan 19 (73%)
- Singapore 3 (12%)
- Spain 1 (4%)
- New Zealand 1 (4%)
- Philippines 1 (4%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Amateras Space is a startup driven by the mission to “expand the realm of human activity,” aiming to establish a next-generation spacesuit business by developing advanced, practical technologies that enable humans to work, explore, and thrive in space and other extreme environments. | Angel / Jan 27, 2026 | ||
| RIMM Sustainability provides a SaaS platform that enables companies of all sizes to optimise their sustainability management effort. It builds tools for sustainability management, reporting and optimisation. | $3M / Seed / Feb 16, 2022 | ||
| Our company's name embodies our vision for the world, to make sustainable choices second nature for a billion people. abillion has helped millions of people worldwide discover community and impact through vegan food, sustainable products and a growing network of people championing sustainability. We've launched the world's firstpeer-to-peer marketplace dedicated to sustainability, and we've helped more than 250,000 businesses globally reach consumers most likely to purchase their products and services.Our culture reflects our community – we have an incredibly diverse team from nearly 20 nationalities and over half of our team are women. We're unapologetic about our work ethic, because our mission is to create a world that's seemingly impossible to imagine but so incredibly beautiful if we bring it to life. | $10M / Series A / Jan 01, 2022 | ||
| Our company's name embodies our vision for the world, to make sustainable choices second nature for a billion people. abillion has helped millions of people worldwide discover community and impact through vegan food, sustainable products and a growing network of people championing sustainability. We've launched the world's firstpeer-to-peer marketplace dedicated to sustainability, and we've helped more than 250,000 businesses globally reach consumers most likely to purchase their products and services.Our culture reflects our community – we have an incredibly diverse team from nearly 20 nationalities and over half of our team are women. We're unapologetic about our work ethic, because our mission is to create a world that's seemingly impossible to imagine but so incredibly beautiful if we bring it to life. | $10M / Series A / Dec 14, 2021 | ||
| Revorf analyzes data and develops AI-related to infectious diseases and healthcare. | $2.8M / Seed / Mar 08, 2021 | ||
| SPACE WALKER specializes in the design, manufacture, and sale of reusable rockets and peripheral components. SPACE WALKER also plans and submits proposals for space-related events and other related businesses. | $1.3M / Angel / Nov 13, 2020 | ||
| Share Village is a project that transforms old folk houses nationwide into villages. Share Village overturns the concept of "village" starting from the frontier of Akita Prefecture. | Venture - Series Unknown / Sep 03, 2020 | ||
| Osiro is a community management firm. | Seed / Feb 27, 2020 | ||
| manebi is an Career development support platform business to support human transformation. | Seed / Oct 15, 2019 | ||
| DADA Japan is a start-up mainly engaged in two businesses: the Community House Aoi business that emphasizes communication between young people, and the BUSHOUSE business that creates moving homes. | Seed / Feb 25, 2019 | ||
| See all 26 investments → | |||
Co-Investors
About D4V
D4V (Design for Ventures) is a Tokyo-based early-stage venture capital firm that invests in disruptive, consumer, and enterprise technology startups. Partnering with the global design company IDEO, D4V provides both hands-on assistance and coaching to help startups create value via human-centered customer experiences and interactions.
D4V Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Tom Kelley
Founder & Chairman
|
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FAQ
What does Mamoru Taniya invest in?
Mamoru Taniya invests primarily in Apps, Content and FinTech startups, most often at Seed and Series A stage. Most of the 26 investments tracked by Shizune back companies in Japan. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Mamoru Taniya's check size?
Mamoru Taniya typically joins rounds of $2.1M–$28M at Seed, $2.1M–$20M at Angel and $2.3M–$47M 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 Mamoru Taniya participates in.
How do I contact Mamoru Taniya?
Public channels for Mamoru Taniya 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.
When did Mamoru Taniya last invest?
The most recent investment recorded for Mamoru Taniya closed in Jan 2026. Shizune tracks 26 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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