Hubble, a Tokyo, Japan-based AI-driven contract management platform, has raised 800 million yen, bringing its total Series B funding to 2.3 billion yen. 

Investors 

The round included Vertex Ventures Southeast Asia & India and DNX Ventures, marking Vertex’s first equity investment in the Japanese legal tech sector. 

Vertex Ventures Southeast Asia & India is a venture capital firm that invests in high-growth, early-stage technology startups across Southeast Asia and India. They focus on early-stage funding, typically investing in Pre-Series A, Series A, and Series B rounds. 

DNX Ventures is an early-stage venture capital firm specializing in B2B (Business-to-Business) startups, with a unique cross-border focus between the United States and Japan/Asia. DNX invests in Seed and Series A stages, with dedicated annex funds for follow-on investments up to the late stage.

Hubble Use of Funds 

The company will use the funds to develop new generative AI features, strengthen existing products, expand customer success and implementation support, and enhance organizational infrastructure to support global growth. 

About Hubble 

Led by CEO Shinpei Hayakawa, Hubble is a legal tech company that provides cloud-based contract processing and management services designed to improve collaboration between legal and business departments. It utilizes AI to handle everything from contract review requests to creation, review processes, and management of concluded contracts. Hubble supports over 700 companies and recently launched the Contract Flow Agent (CFA), an AI-powered contract assistant, which has been delivering continuous new features since July 2025. 

Funding Details 

Company: Hubble, Inc. 

Raised: ¥2.3B 

Round: Series B 

Funding Date: October 2025 

Investors: Vertex Ventures Southeast Asia & India, DNX Ventures 

Company Website: https://hubble-docs.com/  

Software Category: Legal Tech / Contract Management 

Source: https://prtimes.jp/main/html/rd/p/000000317.000027155.html