Fine Structures Ventures — Full Portfolio

EnergyMill Valley, US

Bates Marshall(Executive Officer, Director)Chris Hill(Director)

BoardSasha Brown(Director)

Boston Metal develops Molten Oxide Electrolysis (MOE), a platform technology for producing high-value and critical metals from inputs such as low-grade ores, mining waste, and industrial waste.

Advanced ManufacturingCleantechNew Materials

Tadeu Carneiro(CEO)in

Caelux develops perovskite-based solar technology and manufactures Active Glass solutions to improve solar energy efficiency, power output, and cost-effectiveness using advanced manufacturing and machine learning.

CleantechEnergyNew Materials

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)Robert Mumgaard(Executive Officer, Director)Daniel Brunner(Executive Officer)Massimiliano Pieri(Director)Alan Eustace(Director)

BoardKatie Rae(Director)

Constructive develops synthetic biology technology using recoded genomes and engineered tRNAs to incorporate novel chemical building blocks into proteins, enabling new therapeutics, materials, and manufacturing applications.

BiotechDeep TechNew Materials

Debut combines artificial intelligence and biotechnology to develop novel skincare and haircare ingredients.

AI & Machine LearningBiotechDeep Tech

Joshua Britton(Founder & CEO)

femtoAI develops AI inference hardware and software for edge computing, enabling machine learning models to run efficiently on resource-constrained devices.

AI & Machine LearningHardwareIoT

Hoxton Farms grows cultivated fat, a biomanufactured ingredient for food companies to use in plant-based and alternative meat products.

AgTechAI & Machine LearningBiotechDeep TechFoodTechLondon, GB

Vítor Espírito Santo(Chief Scientific Officer)in

Mainspring Energy develops power generation systems.

Deep TechEnergyHardware

BoardTom Linebarger(Chairman & Chief Executive Officer)

Mantle develops metal 3D printing technology that produces precision metal parts with the surface finish and tolerances needed for tooling and dies used in mass production.

Advanced ManufacturingDeep TechHardwareNew MaterialsSan Francisco, US

Stephen ConnorTed Sorom

Nitricity produces plant-based fertilizer for agricultural use, focused on sustainable soil health for farmers and growers.

AgTechCleantechClimate TechFremont, US

Dr. Nicolas Pinkowski(CEO, Co-Founder)Dr. Joshua McEnaney(President, CTO, Co-Founder)Dr. Jay Schwalbe(CSO, Co-Founder)

Osmoses develops a membrane technology for purifying and separating gas molecules, aimed at making industrial gas separation processes more energy-efficient.

CleantechClimate TechDeep TechNew MaterialsBoston, US

Francesco Benedetti(Co-Founder & CEO)Katherine Mizrahi Rodriguez(Co-Founder & Chief Implementation Officer)Zachary P. Smith(Co-Founder / Associate Professor, MIT)

Houston, US

Mark Land(Director)Glenn Sandgren(Executive Officer)

pH7 Technologies develops a proprietary electrochemical closed-loop process for extracting critical metals and minerals — including platinum group metals, gold, copper, and tin — from primary and secondary resources with lower energy, water, and environmental impact.

Circular EconomyCleantechClimate TechNew MaterialsVancouver, CA

Mohammad Doostmohammadi(Founder & CEO)

Phytoform Labs develops GM-free genome editing tools and trait engineering technologies for crop improvement, with a focus on potato and tomato varieties.

AgTechAI & Machine LearningBiotechHarpenden, GB

William Pelton(Executive Officer, Director)Nicholas Kral(Director)Dhiraj Singh(Director)

Quaise Energy develops superhot geothermal drilling technology using millimeter-wave powered drilling to access deep geothermal energy sources at unprecedented depths and temperatures for large-scale clean power generation globally.

CleantechDeep TechEnergyHouston, US

Carlos Araque(Executive Officer, Director)Vinod Khosla(Director)William Restrepo(Director)Frohman Anderson(Director)Ali Azad(Director)

BoardColleen Calhoun(Director)

Radian Aerospace develops a reusable spaceplane system designed to make spaceflight affordable and routine for scientific research, in-space manufacturing, and Earth observation missions.

Deep TechHardwareSpace TechRenton, US

Curtis Gifford(Chief Financial Officer, Chief Operating Officer, & Co-Founder)Richard Humphrey(Chief Executive Officer & Co-Founder)Livingston Holder(Chief Technology Officer & Co-Founder)Jeff Feige(Chief Revenue Officer & Co-Founder)

Sepion develops advanced polymer separator technology for batteries and other applications including water separation and materials recovery.

CleantechDeep TechEnergyNew MaterialsSilicon Valley, US

Peter Frischmann(CEO & Co-Founder)Brett Helms(CSO & Co-Founder)Randy Chan(Director)

VEIR manufactures low- and medium-voltage superconducting systems that deliver electricity for high-performance AI data centers.

AI & Machine LearningDeep TechEnergyHardwareWoburn, US

Tim Heidel(CEO & Co-Founder)inDoug Stewart(Director)

BoardAdam Wallen(Executive Officer, Director)