# ChatBook funding: rounds and investors

> ChatBook has raised $1.0M across 1 round since 2019. Investors include Monex Ventures, East Ventures and Voyage Ventures. Every round with its source.

Source: https://millionrounds.com/company/chatbook (Millionrounds; every figure on the page links to its filing or article)

Japan · [Funded startup](https://millionrounds.com/companies)

# Who invested in *ChatBook*

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Advertising & Adtech Martech

Funding summary Updated 26 Oct 2026

**$1.0M** raised across 1 round since 2019, from 1 source

- **Latest round:** Round, $1.0M Dec 2019
- **Led by:** Monex Ventures
- **Investors:** 4 (1 led)

See who backed them

## The rounds

- **Dec 2019** Round **$1.0M** [Monex Ventures](https://millionrounds.com/fund/monex-ventures) Lead [East Ventures](https://millionrounds.com/fund/east-ventures) [Voyage Ventures](https://millionrounds.com/fund/voyage-ventures) Mitsui Sumitomo Insurance Reported by FinSMEs

## Everyone who backed them

[Monex Ventures](https://millionrounds.com/fund/monex-ventures) VC firm **1** round, led 1

[East Ventures](https://millionrounds.com/fund/east-ventures) VC firm **1** round

[Voyage Ventures](https://millionrounds.com/fund/voyage-ventures) Corporate VC **1** round

Mitsui Sumitomo Insurance no record of our own yet **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=chatbook).

## Quick answers about ChatBook

### Who invested in ChatBook?

ChatBook's investors include Monex Ventures, East Ventures, Voyage Ventures and Mitsui Sumitomo Insurance. Monex Ventures led its latest round.

### How much has ChatBook raised?

ChatBook has raised $1.0M across 1 round since 2019.

### When did ChatBook last raise?

ChatBook's most recent round was an Undisclosed round of $1.0M in Dec 2019, led by Monex Ventures.

### What was ChatBook's biggest round?

Its most recent round, $1.0M in Dec 2019, is also its largest on record.

### Who backed ChatBook first?

ChatBook's first round on record, in Dec 2019, was backed by Monex Ventures, East Ventures and Voyage Ventures and 1 others.

### What stage is ChatBook at?

ChatBook's latest named round is an Undisclosed round, in Dec 2019.

### Where is ChatBook based?

ChatBook is based in Japan.

### Who led ChatBook's rounds?

Monex Ventures led the Undisclosed round in 2019.

## Companies like ChatBook

In the same sector, and raised in the last eighteen months.

[**iYell** $8.4M · Jul 2026](https://millionrounds.com/company/iyell)[**Buddy Compass** $924K · Jul 2026](https://millionrounds.com/company/buddy-compass)[**SOKAI** $75M · May 2026](https://millionrounds.com/company/sokai)[**Lipronext** $755K · Apr 2026](https://millionrounds.com/company/lipronext)[**Porty** $953K · Apr 2026](https://millionrounds.com/company/porty)[**Japan DX** $1.0M · Mar 2026](https://millionrounds.com/company/japan-dx)

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