/Investor DB

Planeteer Capital — 2025 Investments

3 investments dated 2025 · listed companies and verified rows first · show all

Material Differencematerialdifference.earthDec 2025SEC filingmedium confidence

Material Difference builds an explainable AI platform designed to help locate ore-bodies for mining operations.

AI & Machine LearningEnergySan Francisco, US

Gabriel Yoong(CEO)inLuke Cullen(CTO)in

Board seatSophie Purdom· per SEC Form D · $3.7M raise · filed Dec 2025

Co-investorsEntrepreneur FirstMythos Ventures Management, LlcTranspose Platform Management

Commonwealth Fusion Systemscfs.energyin𝕏Series B · Aug 2025 · $860M

Commonwealth Fusion Systems develops commercial fusion power plants using high-temperature superconducting magnet technology to provide grid-scale energy.

CleantechClimate TechDeep TechEnergyCambridge, US

Brandon Sorbom(Founder)inRobert Mumgaard(Executive Officer, Director)inDaniel Brunner(Executive Officer)inBob Mumgaard(Founder)inDan Brunner(Founder)Dennis Whyte(Founder)

Co-investorsAdvection Growth CapitalArmada Investment AGBay Bridge Ventures ClimateBeni Venture CapitalBrainstorm VenturesBreakthrough Energy Ventures+45 more

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Terraton

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.