Helium-3 Ventures — Full Portfolio

Reducing methane emissions from cattle by 97%

Alga Biosciences develops feed additives that reduce methane emissions from cattle — cutting cow burps to combat climate change.

Advanced ManufacturingAgTechBiotechClimate TechSan Francisco, US

Alex Brown(Co-founder and CEO)inDaria Balatsky(Founder)inCaroline McKeon(Founder)inAlexander Brown(Founder)in

Co-investorsY CombinatorDay One VenturesAngel Collective Opportunity FundCollaborative FundCool Climate CollectiveJetstream+4 more

Astranis manufactures small, high-powered geosynchronous satellites equipped with advanced digital processing technology for global telecommunications and connectivity services.

Advanced ManufacturingDeep TechHardwareSpace TechSan Francisco, US

John Gedmark(Founder/CEO)inRyan McLinko(Founder/CTO)in

Co-investorsAndreessen HorowitzBlack FlagBoxGroupCantos VenturesCherubic VenturesCommonweal Ventures+36 more

Toronto

Matthew Chan(Founder)inPrashant Shukla(Director)Li Nan Ouyang(Executive Officer, Director)

BoardAdam Struck(Director)in

Co-investorsFlucas VenturesHyde Park Venture PartnersWestern Technology InvestmentStruck Capital

Boom Supersonic develops supersonic aircraft and engines, including the Overture commercial airliner and the Symphony turbofan engine, targeting commercial aviation and advanced infrastructure applications.

Advanced ManufacturingDeep TechHardwareSpace TechCentennial, US

Blake Scholl(Founder/CEO)in

Co-investorsActivant CapitalAltra VentureAngel Collective Opportunity FundBessemer Venture PartnersCaruso VenturesDraper Associates+23 more

Cart.com provides unified commerce and logistics software and services that enable companies to sell and fulfill orders across multiple channels.

E-commerceLogistics & Supply ChainSaaSHouston, US

Omair Tariq(Founder and CEO)inJim Jacobsen(Director)Jim Jacobson(Director)

BoardAlan Miller(Director)Scott Calliham(Director)Blair Garrou(Director)in

Co-investorsAngel Collective Opportunity FundBeyond CapitalCapital FactoryCincyTecheGateway CapitalInvestX+15 more

Contraline develops new contraceptive and reproductive health technologies, with a focus on male contraception.

BiotechDigital HealthMedical DevicesCharlottesville, US

Kevin S Eisenfrats(Executive Officer, Director, Promoter)Kevin Eisenfrats(Co-Founder and CEO)John Herr(Co-Founder)

BoardIris Van Alderwerelt van Rosenburgh(Director)Gurdane Bhutani(Director)inMartin J Emerson(Director)

Co-investorsBiotechnology Value FundMBX CapitalAllied Venture PartnersAmboy Street VenturesAurum Venture PartnersBeni Venture Capital+14 more

DigiBuild is a construction procurement platform that helps general contractors, subcontractors, and property owners source materials, reduce costs, and maintain project timelines.

AI & Machine LearningB2B MarketplacesConstruction TechEnterprise SoftwarePropTechSaaSMiami, US

Robert Salvador(Founder)inIvan Franco(Founder)in

Co-investorsPICUS CAPITALDraper AssociatesCathexis VenturesChain ReactionNeer Venture PartnersY Combinator+2 more

Humanoid robot platform for AI research and human interaction

Exa is an AI-powered search API that retrieves high-quality information from the web in real-time, designed for AI agents, developers, and applications that require precise natural-language search capabilities.

AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US

William Bryk(co-founder/CEO)inJeffrey Wang(Founder)inWalden Yan(Co-Founder)Will Bryk(Founder)in

Co-investors137 VenturesAndreessen HorowitzFelicis VenturesHaystackLightspeed Venture PartnersSLVC+8 more

Figure develops general-purpose humanoid robots designed for deployment in workforce and home environments.

AI & Machine LearningHardwareRoboticsSunnyvale, US

Brett Adcock(Executive Officer, Director)inLee Randaccio(Executive Officer)Dana Berlin(Executive Officer)Logan Berkowitz(Executive Officer)Colby Adcock(Director)Peter Welinder(Director)

Co-investorsAUDEO VENTURESAurum Venture PartnersBeyond CapitalBold Capital PartnersBVVCEvolution VC Partners+22 more

Turning organic waste into biodegradable plastics

Genecis commercializes the production of polyhydroxyalkanoate (PHA), a biodegradable polymer made from bacteria that consume organic waste, offering a sustainable alternative to petroleum-based plastics for packaging, textiles, medical devices, and other applications.

Advanced ManufacturingBiotechCircular EconomyCleantechClimate TechRoboticsToronto, CA

Luna Yu(Founder)in

Co-investorsAllied Venture PartnersAsymmetry VenturesBeresford VenturesCeltic House Asia PartnersEmerald Technology Ventures AgY Combinator

Joy provides customizable wedding websites and planning tools for couples organizing their weddings.

B2B MarketplacesConsumerDirect to ConsumerE-commerceMarketplacesSaaSSan Francisco, US

Vishal Joshi(Founder/CEO)inDorian Bach(Founder)inKaiwalya Kher(Founder/CTO)inVishal J.(Founder)inDorian B(Founder)Vishal J(Founder)

Co-investorsFernbrook Capital ManagementForerunner VenturesKube VCMVP VenturesObvious VenturesOlive Tree Capital+12 more

LineLeap operates a mobile app that allows nightlife customers to skip venue lines, purchase cover charges, buy event tickets, and order drinks at bars and clubs.

ConsumerFoodTechFuture of WorkMarketplacesNew York City, US

Nicholas Becker(Founder)inMax Schauff(Founder)inPatrick Skelly(Founder)in

Co-investorsAltaIR CapitaleLab Venturesgener8torGoat Rodeo CapitalGreat Oaks Venture CapitalRaptor Group+3 more

AI-powered robotic metal fabrication

Machina Labs builds and operates software-defined factories using AI-guided robotics to manufacture complex metal structures and components from digital designs.

Advanced ManufacturingAI & Machine LearningRoboticsChatsworth, US

Edward Mehr(Executive Officer, Director)Babak Raeisi Nia(Executive Officer, Director)

BoardPeter Lee(Director)Scott Brady(Director)inSam Smith-Eppsteiner(Director)in

Co-investorsAIX VenturesAtento CapitalBalerion Space VenturesCadron Capital PartnersCongruent VenturesPredictive VC+10 more

Customizable, affordable glasses for all

Pair Eyewear designs and sells prescription and non-prescription eyeglasses with swappable frame tops that allow customers to change styles.

ConsumerDirect to ConsumerHardwareCalifornia, US

Sophia Edelstein(Executive Officer, Director)inNathan Kondamuri(Executive Officer, Director)in

BoardRick Yang(Director)inAlex Gurevich(Director)in

Co-investorsAdvancit CapitalBaukunstblue 9 capitalBreak Trail VenturesEvolution VC PartnersJavelin Venture Partners+10 more

Pirouette develops OnePush, a fully automatic hidden-needle auto-injector platform paired with drug programs across chronic and rescue care indications.

Advanced ManufacturingBiotechHealthtechMedical DevicesBoston, US

Conor Cullinane(Founder)inMatthew Kane(Founder)inElijah Kapas(Founder)in

BoardPARINAZ MOTAMEDY(Director)inJOSEPH NEMMERS(Director)

Co-investorsY CombinatorGaingelsSafar Partners

Pirouette develops a disc-shaped, push-button auto-injector with a hidden needle and controlled insertion for at-home self-administration of injectable medicines, aimed at improving patient comfort and adherence for chronic therapies.

BiotechHealthtechMedical Devices

PNE Cycle operates a platform for producing battery materials, including battery-grade cathode active material (CAM) and Advanced Black Mass, using its patented LPAS recycling technology to recover critical minerals.

Circular EconomyCleantechNew Materials

Co-investorsWorldQuant Ventures

Lithium-ion battery direct recycling technology developer

Bordentown, US

Xiaofang Yang(Director)Chao Yan(Executive Officer, Director)Jerry Wang(Director)

Co-investorsTech Council VenturesSamsung Venture Investment Corporation

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 TechEnergy

Carlos Araque(Founder)

Co-investorsThe Engine Ventures

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)Matt Houde(Founder)in

BoardColleen Calhoun(Director)inVinod Khosla(Director)William Restrepo(Director)Frohman Anderson(Director)

Co-investorsCollaborative FundFine Structures VenturesPrelude VenturesTechEnergy VenturesXplorer Capital8090 Industries+5 more

Quidnet Energy develops geomechanical energy storage technology that repurposes existing oil, gas, and hydroelectric infrastructure to provide grid-scale, long-duration energy storage.

CleantechDeep TechEnergyHardwareHouston, US

Aaron Mandell(Executive Officer)Dagong Zhou(Executive Officer, Director)Howard Schmidt(Director)

BoardChristina Karapataki(Director)inMatthew Nordan(Director)Michael Biddle(Director)

Co-investorsClean Energy VentureCongruent VenturesNXT VenturesBreakthrough Energy VenturesClean Energy Ventures

San Jose, US

Roman Piszcz(Executive Officer, Director)Andrew Khor(Director)

BoardLoren Straub(Director)in

Co-investorsBowery Capital

Rain develops energy-efficient hardware for artificial intelligence workloads.

AI & Machine LearningHardwareSemiconductors

Co-investorsLoup VenturesMetaplanetOpen Field CapitalProsperity7 VenturesAsymmetry VenturesFoundersX Ventures+1 more

Rho offers a financial platform combining business banking, corporate cards, spend management, treasury, and accounting automation for companies from incorporation to over 10,000 employees.

Enterprise SoftwareFintechSaaSNew York, US

Everett Cook(Founder & CEO)

Co-investorsClaritas CapitalClocktower VenturesFlucas VenturesInspired CapitalRecall CapitalRed Swan Ventures+6 more

Runwise provides a wireless building control system that replaces traditional control infrastructure, which typically requires many devices, extensive wiring, and days of installation labor, with a single control installed wirelessly in a day or less.

CleantechIoTPropTech

Lee Hoffman(Founder)inMichael Cook(Founder)in

Co-investorsDERIVE VENTURESMassMutual VenturesMenlo VenturesMultiplier CapitalNextView VenturesNotation Capital+2 more

Reliable, flexible, and sustainable energy storage and generation

Sage Geosystems develops pressure geothermal technology to generate energy from the earth's subsurface heat, drawing on decades of experience drilling wells worldwide.

CleantechClimate TechDeep TechEnergyHouston, US

Cynthia Taff(Executive Officer, Director)Lev Ring(Executive Officer, Director)in

BoardWilliam Restrepo(Director)Clay Shamblin(Director)Staffan Qvist(Director)

Co-investorsCarbonCubit CapitalAll Aboard

Skillfully provides verified skills data for workforce decisions through performance-based work simulations rather than proxy measures.

Enterprise SoftwareHR Tech

Co-investorsBetter Ventures Central Llc

Space Forge develops in-space manufacturing capabilities, focusing on growing and processing advanced materials such as semiconductors in space and returning them to Earth.

Deep TechNew MaterialsSemiconductorsSpace TechCardiff, GB

Joshua Western(Founder)in

Co-investorsE2MC VenturesHelios CapitalStarbridge Venture Capital LlcTrousdale VenturesType One VenturesUnruly Capital+2 more

SPAN develops smart electrical panels that provide real-time home energy monitoring and control, enabling homeowners to track and optimize energy consumption at the room and appliance level to reduce energy bills.

CleantechHardwareIoTSan Francisco, US

Arch Rao(Founder & CEO)

Co-investorsAngeleno GroupArcTern VenturesCollaborative FundCongruent VenturesDesigner FundEarth Foundry+15 more

Satellite delivery to orbit at reduced cost using 100% reusable daily-flying rockets.

Co-investorsLa Famiglia

Stoke Space develops fully reusable rockets for space transportation and mobility services.

Advanced ManufacturingDeep TechHardwareSpace TechSeattle, US

Andy Lapsa(Founder)inTom Feldman(Founder)inKelly Hennig(Executive Officer)

BoardChristian Garcia(Director)inPhil Harris(Director)inMorgan Beller(Director)in

Co-investorsAcequia Capital (AceCap)Aurelia FoundryBalerion Space VenturesBeyond CapitalBeyond Earth VenturesCross Culture Ventures+27 more

Teamworks provides a unified software platform for sports organizations to acquire, coordinate, develop, and deploy athletic talent, covering functions like player communication and administration.

AI & Machine LearningSaaSSports Tech

Co-investorsAtlanta Tech VillageBlossom Street VenturesDuke Capital PartnersScOp Venture CapitalTeamworthy VenturesDragoneer Investment Group

Co-investorsHOF CapitalTYLT VenturesVerance Capital