MC
Mitsui & Co
Mitsui & Co is a seed to Series E stage investment firm. It has made 39 investments. Average disclosed round size is $48.5M (across 41 rounds with reported amounts).
Portfolio
39
Fund Size
—
Top Stage
Series B
Last 12 Mo
0
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
46 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Bowtie | Series C | $70M | Jul 2025 |
 Fervo Energy | Bridge | $462M | Jan 2025 |
| LLeash Biosciences | Seed | $9.3M | Apr 2024 |
| DDevon Energy | Series C | $244M | Jan 2024 |
 EverSteel | Series A | $3M | Sep 2023 |
 Mirxes | Series D | $50M | Jan 2023 |
| Fervo Energy | Series E | $138M | Jan 2022 |
 Aktivo Labs | Series A | $10M | Jan 2022 |
 Xurya | Unknown | $55M | Jan 2022 |
 PT. SURYA SEMESTA INTERNUSA TBK. | Unknown | $33M | Jan 2022 |
| Bowtie | Series B | $22.6M | Oct 2021 |
| KKomaza | Series B | $10M | Jan 2020 |
 EV Connect | Series B | $12M | Oct 2019 |
 Fictiv | Series C | $33M | Mar 2019 |
| EV Connect | Series B | $12M | Jan 2019 |
 Renoveru | Series B | $11.8M | Apr 2017 |
 Mercari | Series D | — | Mar 2016 |
| GGeekie | Series B | $7M | May 2015 |
| PPromethera Biosciences | Series C | — | Nov 2014 |
 OpenX Software | Series E | $22.5M | Jan 2013 |
 Armagen Technologies | Series A | $17M | Dec 2012 |
| VVirident Systems | Series D | $26M | Sep 2012 |
| PPromethera Biosciences | Series B | — | Mar 2012 |
| VVirident | Series D | $26M | Jan 2012 |
 Box | Series E | — | Oct 2011 |
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Top Co-Investors
Mitsui & Co., Ltd.6 shared
Breakthrough Energy Ventures4 shared
Hercules Capital, Inc.3 shared
Stanford's StartX Fund3 shared
Accel3 shared
DCVC3 shared
Impact Science Ventures3 shared
Sabanci Climate Ventures3 shared
B Capital3 shared
Marunouchi Innovation Partners3 shared
Capricorn Investment Group3 shared
Mitsubishi Heavy Industries3 shared
Liberty Mutual3 shared
Congruent Ventures3 shared
Fund+2 shared
Globis Capital Partners2 shared
Sofinnova Partners2 shared
New Enterprise Associates2 shared
TCA Venture Group2 shared
Last updated: 20 October 2026