Fontinalis Partners — 2026 Investments

2 investments dated 2026 · listed companies and verified rows first · show all

Fab2fab2.com 𝕏Aug 2026

fab2 designs and builds semiconductor fabrication equipment and the fabs themselves, developing the hardware, components, and software needed to manufacture chips.

Deep TechHardwareSemiconductorsAustin, US

Sam Zeloof(Founder)inJim Keller(Founder)

BoardCOREY NOBILE(Director)

Helion Energyhelionenergy.com in 𝕏Jun 2026 · $470M

Helion develops fusion energy systems designed to generate clean electricity for commercial use.

Advanced ManufacturingCleantechClimate TechDeep TechEnergyHardwareSeattle, US

David Kirtley(Co-founder & CEO)in Chris Pihl(Co-founder & CTO)inJohn Slough(Co-founder)in George Votroubek(Co-Founder & Chief Scientist)in Anthony Pancotti(Co-founder)in

Board Sam Altman(Director)

Co-investorsAnti Congruent Ventures SoftBank Group SoftBank Vision Fund Y Combinator Capricorn Investment Group +5 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.