/Investor DB

Idemitsu Kosan — Full Portfolio

3 tracked investments · listed companies and verified rows first

GYXIS CORPORATIONgyxis.jp✓ verified

Gyxis is a gas and energy company that handles liquefied petroleum gas (LPG) trading, distribution, and logistics across Japan and globally.

CleantechEnergyLogistics & Supply Chain

Co-investorsSumitomo Corporation

Jet Zero Australiajetzero.com.auinMar 2024 · $19.1M

Jet Zero develops sustainable aviation fuel (SAF) projects in Australia to support regional economies, fuel security, and decarbonization in the aviation and transport sectors.

CleantechClimate TechEnergySydney, AU

Ed Mason(Chief Executive Officer)in

Co-investorsDragonfly Enviro CapitalAirbus

Quaise Energyquaise.cominAug 2026 · $180M

Quaise Energy develops ultra-deep geothermal drilling using gyrotron-powered millimeter-wave technology to reach depths up to 20 km and temperatures up to 500°C, aiming to build superhot geothermal power plants.

CleantechDeep TechEnergyHouston, US

Matt Houde(Founder)inCarlos Araque(Founder)inAaron Mandell(Founder)inPaul Woskov(Founder)

BoardColleen Calhoun(Director)inVinod Khosla(Director)

Co-investorsCollaborative FundFine Structures VenturesHelium-3 VenturesJERAPrelude VenturesStandard Investments+7 more

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.