Prime Partners
Venture capitalTokyo · Pre-Seed–Growth
Also known as 株式会社 プライムパートナーズ
Investment thesis
Prime Partners positions itself as a hub connecting global startups with large enterprises. It manages venture capital and corporate venture capital funds, invests in startups, and helps both sides build growth and new-business strategies to create innovation. Beyond investing, the firm offers innovation consulting to design organizations and processes for corporate new-business development, and it acts as a co-partner to startups and large companies to accelerate and manage ventures and open innovation initiatives across sectors such as AI, life sciences, fintech, enterprise software, and consumer/commerce.
Source: firm website, verified Aug 3, 2026.
What they invest in
from 28 of 71 portfolio companiesAI & Machine Learning ×13SaaS ×10Enterprise Software ×6Developer Tools ×5Biotech ×4Consumer ×4Healthtech ×4Media & Entertainment ×4
HQs:Japan×10United States×10
Investments · 71 tracked
founders shown can be your intro pathGRAIL develops the Galleri blood test for multi-cancer early detection using next-generation sequencing and machine learning to screen for multiple deadly cancer types before symptoms appear.
AI & Machine LearningBiotechHealthtechMedical DevicesMenlo Park, US
Joshua Ofman, MD, MSHS(Chief Executive Officer)Aaron Freidin(Executive Officer)Josh Ofman(Executive Officer)Robert Ragusa(Executive Officer, Director)Jose Baselga(Director)Kaye Foster-Cheek(Director)
Twist Bioscience develops a silicon-based synthetic DNA manufacturing platform that produces high-quality DNA, genes, and NGS reagents for customers in medicine, agriculture, and industrial chemicals.
BiotechDeep TechSemiconductorsSouth San Francisco, US
Emily Marine Leproust(Executive Officer, Director, Promoter)William Charles Banyai(Executive Officer, Director, Promoter)Bill James Peck(Executive Officer, Promoter)Rob Chess(Director)
BoardKeith Crandell(Director)Paul Conley(Director)
Implicit is an AI-powered knowledge platform that aggregates technical content from manuals, tickets, and procedures to provide cited answers to both human workers and AI agents.
AI & Machine LearningEnterprise SoftwareSaaS
Operates global fandom platform 'b.stage'.
Operates online flower and greenery store 'HitoHana'.
bemyfriends provides a platform for artists, creators, and brands to build and manage fandom-based businesses globally.
Creator EconomyMedia & EntertainmentSaaSSocial
Clear Labs develops fully automated next-generation sequencing (NGS) platforms that process genomic data into insights for research and surveillance applications across infectious disease, food safety, and oncology.
BiotechData & InfrastructureDeep TechHealthtechMedical DevicesSan Carlos, US
Sasan Amini(Co-founder & CEO)Ramin Khaksar(Executive Officer)inEdward Fan(Executive Officer)inBrodie Flanders(Executive Officer, Director)Charlie Piper(Director)Nicolas H. Roelofs(Director)
CreditEngine (クレジットエンジン株式会社) is a Japanese company that provides online lending and credit technology services.
AI & Machine LearningFintechSaaSTokyo, JP
内山 誓一郎(代表取締役 (Representative Director/CEO))向山 裕介(取締役CPO)新色 顕一郎(取締役COO)神谷 麗(執行役員CFO / Finance and Strategy Lead)阿藤 誠一(執行役員 / Lending Team Lead)
Develops healthcare solutions enabling analysis of molecular-level bio data.
Tokyo
Yukinori Matsuya(Director)Takashi Fujishima(Director)Ryo Manzoku(Director)Hiroyuki Kawamoto(Director)Hironobu Ueno(Director)Guo Yihong(Executive Officer)
Operates short-drama app 'BUMP'.
Develops health foods using cricket flour (cricket-extracted protein).
EXO makes protein-led snacks made with Acheta (cricket) protein, marketed as a sustainable fuel source for active and fitness-focused consumers.
ConsumerDirect to ConsumerFoodTech
Fiddler provides an AI control plane that offers monitoring, guardrails, and governance for enterprise AI agents and compound AI systems.
AI & Machine LearningDeveloper ToolsEnterprise Software
Krishna Gade(Founder & CEO)in
Develops a performance management platform.
Operates fragrance platform 'Coloria'.
Hoodline is a news publisher delivering local and regional news coverage across U.S. cities, including breaking stories on crime, weather, and legislation.
Media & Entertainment
AI engine powering next-gen video games and interactive experiences
Inworld AI provides a full-duplex audio streaming platform that enables real-time conversational AI interactions with intelligent turn-taking, function calling, and multi-model routing capabilities for developers building conversational applications.
AI & Machine LearningDeveloper Tools
Provides the phone DX service 'IVRy'.
Operates group-buying app 'Kauche'.
Kognitos builds an agentic AI automation platform that lets business users write automation logic in plain English, executed deterministically by a patented neurosymbolic engine across 130+ enterprise integrations.
AI & Machine LearningEnterprise SoftwareSaaSSan Jose, US
Binny Sher Gill(Executive Officer, Director)Binny Gill(Founder)
BoardAshmeet Sidana(Director)
Provides AI contract review SaaS 'LeCHECK'.
Operates SHOP STOP, one of Japan's largest mobility business platforms.
Mill makes an electric food waste recycler for homes that reduces food scraps by 80% and converts them into nutrient-rich grounds for gardens or farms.
Climate TechConsumerHardware
Matt Rogers(Founder & CEO)
Develops smart disposer 'OSCAR' and a circular economy platform.
Mysten Labs builds infrastructure and tools for web3, focusing on making decentralized systems secure, reliable, and ready for mass adoption.
Cloud ComputingCrypto & Web3Deep TechDeveloper Tools
Adeniyi Abiodun(Founder)in
Nealle operates Park Direct, a mobility SaaS platform that handles parking-lot leasing, contracts, monthly rent collection (with rent guarantee), and customer management online, along with a business-focused version (PDBiz) for corporate fleet and commuter parking and One Day Park, a daily parking reservation service.
Mobility & TransportationPropTechSaaS
Developed cloud-first smartphone 'Robin'.
Operates a cross-border business platform.
Develops a platform to optimize and maximize revenue for subscription businesses.
Develops an AI-powered unstructured big data analysis platform.
Provides career schools for millennial women.
Skyflow provides a data privacy vault delivered via an API that lets companies store, protect, and manage sensitive customer information such as financial, healthcare, and other personal data.
AI & Machine LearningCybersecurityData & InfrastructureDeveloper ToolsPalo Alto, US
Anshu Sharma(Co-founder & CEO)Roshmik Saha(Co-founder)Amruta Moktali(Chief Product Officer)Ken Laversin(Chief Revenue Officer)Daniel Wong(Head of Security Engineering)
Plans and produces vertical full-color smartphone webtoons.
Provides on-demand smart mobility service 'Shuttle' via mobile app.
TechTouch is a Digital Adoption Platform (DAP) that improves user experience on web systems and applications through intuitive operational guides and navigation.
Developer ToolsEnterprise SoftwareSaaSTokyo, JP
STEAM Carnival is a traveling, high-tech carnival that combines science, technology, engineering, art, and math into midway games and attractions.
ConsumerEdTechGamingMedia & EntertainmentLos Angeles, US
Eric Gradman(Executive Officer, Director)Ryan McIntyre(Director)Brent Bushnell(Executive Officer, Director)Mark Solon(Director)
Upside Foods produces cultivated meat using cell-based technology.
BiotechFoodTechSan Francisco, US
Uma Valeti(Founder & CEO)in
Exits · 3
IPOs and acquisitions across the tracked portfolioGRAILNASDAQ: GRALTwist BioscienceNASDAQ: TWSTManaging Your Finances with Truebillacq. by Altice
Portfolio news
latest coverage across their companiesGRAIL · simplywall.st · Jul 17, 2026
Twist Bioscience · biospace.com · Jul 16, 2026
Mill · marketbeat.com · Jul 15, 2026
Inworld AI · businesswire.com · Jun 10, 2026
MOSH㈱ · venturecapital.com · May 7, 2026
Fiddler AI · thesaasnews.com · Jan 30, 2026
Frequently asked questions
- What stage does Prime Partners invest at?
- Prime Partners invests at the Pre-Seed, Seed, Series A, Series B, Series C, Growth stages.
- What sectors does Prime Partners focus on?
- Prime Partners focuses on AI & Machine Learning, Biotech, Consumer, Crypto & Web3, E-commerce, EdTech, Enterprise Software, Fintech, Gaming, Hardware, Healthtech, Media & Entertainment, Mobility & Transportation, PropTech, Robotics, Sector Agnostic.
- Where is Prime Partners located?
- Prime Partners is headquartered in Tokyo, JP.
Images
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