# Mitsui Kinzoku: portfolio, investments and team

> Mitsui Kinzoku is a growth equity. 1 investment on record, 1 in the last 12 months, latest Oct 2026. Portfolio, stages, co-investors and team.

Source: https://millionrounds.com/fund/mitsui-kinzoku (Millionrounds; every figure on the page links to its filing or article)

[Investor](https://millionrounds.com/investors)

# Mitsui Kinzoku

Last cheque observed Oct 2026; 1 cheques on record.

Email

Deploying now Growth equity

Series B

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Deploying now

**100%** of best year **1** **cheques in 12 months**, 1 on record

Since the last cheque **18** days **00** hrs **00** min **00** sec

Rounds led **0 of 1**

Pitch Mitsui Kinzoku

## Mitsui Kinzoku highlights

- 01 1 cheques in the last 12 months
- 02 Mostly Series B: 100% of its rounds

## What they do

- **Type:** Growth equity (from a list, unverified)
- **Cheque size:** Not stated
- **Cold pitches:** Not stated

## The record

Every round we can evidence, newest first **1 appearances**

- **2026** 1 round
- **Oct** **[RadioNano Therapeutics](https://millionrounds.com/company/radionano-therapeutics)** Series B · JP · The Bridge **Undisclosed** With 1 other

An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.

## The cheque

Series B

Median round joined **-** the round, not its cheque

Led 0 of 1 rounds **0%**

- **Sole investor:** Never alone
- **Last cheque:** Oct 2026

Rounds by stage said on their site

- Series B *1*

Cheques by month Led Joined

Nov 2023 Oct 2026

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## Recently backed

The latest companies Mitsui Kinzoku put money into.

[**RadioNano Therapeutics** Oct 2026](https://millionrounds.com/company/radionano-therapeutics)

## Quick answers about Mitsui Kinzoku

### What does Mitsui Kinzoku invest in?

Mitsui Kinzoku invests most often at Series B (100% of the rounds on record).

### How active is Mitsui Kinzoku?

1 investments on record, 1 of them in the last 12 months. The most recent was in Oct 2026.

### What has Mitsui Kinzoku invested in recently?

Its most recent investments on record: RadioNano Therapeutics (Series B, Oct 2026).

### Is Mitsui Kinzoku investing now?

Yes: it is actively investing, with 1 investments in the last 12 months.

### What kind of investor is Mitsui Kinzoku?

Mitsui Kinzoku is a growth equity firm.

### Where does this information on Mitsui Kinzoku come from?

From 1 articles and filings naming it in a round, public registers and its own website, checked and rebuilt every night.

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Built from the rounds we watched, its filings and its own website, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections?slug=mitsui-kinzoku) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=mitsui-kinzoku)