Helium-3 Ventures — Full Portfolio
53 tracked investments · listed companies and verified rows first
General Fusion develops Magnetized Target Fusion (MTF) technology, combining plasma physics, mechanical compression, and liquid metal systems to build a practical, cost-competitive fusion power plant.
CleantechDeep TechEnergyBurnaby, CA
Michael Laberge(Executive Officer)Michel Laberge(Founder)inNathan Gilliland(Executive Officer, Director)inSusan Koch(Executive Officer)inGreg Twinney(Chief Executive Officer)inMegan Wilson(Chief Strategy Officer)in
Co-investorsBraemar Energy VenturesChrysalixEvolution VC PartnersJIMCONew Ground VenturesPender Growth Fund+10 more
Albedo develops a flight-proven platform for Very Low Earth Orbit operations, providing satellite-based insights and connectivity services for national security and critical infrastructure systems.
Advanced ManufacturingClimate TechDeep TechDefense TechSpace TechDenver, US
Topher Haddad(Founder)inAyJay Lasater(Founder)inWinston Tri(Founder)inDylan Betts(Executive Officer)inAjJay Lasater(Founder)
BoardChristian Garcia(Director)in
Co-investorsAngel Collective Opportunity FundBlack FlagBooz Allen VenturesBreakthrough Energy VenturesCommodity CapitalCubit Capital+24 more
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(Founder)inDaria Balatsky(Founder)inCaroline McKeon(Founder)inAlexander Brown(Founder)in
Co-investorsY CombinatorDay One VenturesAngel Collective Opportunity FundBBQ CapitalCollaborative FundCool Climate Collective+13 more
Nobell Foods produces plant-based dairy cheese made from soybean plants engineered to grow casein protein, working with Midwest farmers.
BiotechClimate TechConsumerFoodTechSan Francisco, US
Magi Richani(Founder)in
BoardChris Rivest(Director)Vijay Pande(Director)inKyle Vogt(Director)
Co-investorsAgFunderAndreessen HorowitzDCVC (Data Collective)Mission BiocapitalUnovis Asset ManagementY Combinator+7 more
Array Labs develops radar technology for aerospace and other leading industries.
Advanced ManufacturingDeep TechDefense TechHardwareSpace TechSan Francisco, US
Andrew Peterson(Founder)inJose Isaac Robledo(Founder)in
Co-investorsACVC PartnersAera VCBBQ CapitalClearance Venture PartnersDellin InvestmentsJude Gomila+25 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)inRyan McLinko(Founder)inMike Mancini(Executive Officer)
BoardMartin Casado(Director)inEthan Batraski(Director)inDan Berkenstock(Director)
Co-investorsAndreessen HorowitzATEL VenturesBlack FlagBoxGroupCantos VenturesCherubic Ventures+85 more
Toronto
Matthew Chan(Founder)inLi Nan Ouyang(Executive Officer, Director)
BoardPrashant Shukla(Director)Adam Struck(Director)in
Co-investorsFlucas VenturesHyde Park Venture PartnersWestern Technology InvestmentOrigin VenturesStruck 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 TechHardwareMobility & TransportationSpace TechCentennial, US
Blake Scholl(Founder)inJoshua Krall(Founder)inJoe Wilding(Founder)inJosh Krall(Founder)
Co-investorsAccess Ventures (New York)Activant CapitalAlpha FundsAltra VentureAngel Collective Opportunity FundBessemer Venture Partners+62 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)inOmair T.(Founder)inSaheb Sabharwal(Founder)inRemington Tonar, PhD(Co-founder)Jim Jacobson(Director)
Co-investorsAngel Collective Opportunity FundBeyond CapitalCapital FactoryCincyTechCollective LiquidityeGateway Capital+22 more
Contraline develops new contraceptive and reproductive health technologies, with a focus on male contraception.
BiotechDigital HealthMedical DevicesCharlottesville, US
Kevin Eisenfrats(Founder)inJohn Herr(Founder)
BoardIris Van Alderwerelt van Rosenburgh(Director)Gurdane Bhutani(Director)inMartin J Emerson(Director)Tom Thorpe(Director)
Co-investorsBiotechnology Value FundMBX CapitalAllied Venture PartnersAlumni VenturesAmboy Street VenturesAurum Venture Partners+17 more
Dapper Labs is a venture studio building products and communities at the intersection of culture and emerging technology, focused on digital ownership, data control, and decentralized platforms for creators and collectors.
ConsumerCreator EconomyCrypto & Web3Sector AgnosticVancouver
Roham Gharegozlou(Founder)inDieter Shirley(Founder)inMikhael Naayem(Founder)inJody Rebak(Executive Officer)inMik Naayem(Founder)
BoardDavid Pakman(Director)in
Co-investorsA.Capital Venturesa16z cryptoAndreessen HorowitzAppWorks VenturesBlockchain CoinvestorsBond Capital Management+43 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)inApril Moss(Co-Founder & former COO / Chief Customer Officer)inIvan Franco(Founder)in
Co-investorsPICUS CAPITALDraper AssociatesCathexis VenturesChain ReactionEmerging VenturesNeer Venture Partners+10 more
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 SoftwareSaaSSan Francisco, US
William Bryk(Founder)inJeffrey Wang(Founder)inWalden Yan(Co-Founder)Marcus Holm(Chief Revenue Officer)inDan McArdle(Founder)Jeff Wang(Founder)
Co-investors137 Ventures49 Palms VenturesAndreessen HorowitzFelicis VenturesHaystackLightspeed Venture Partners+29 more
Figure develops general-purpose humanoid robots designed for deployment in workforce and home environments.
AI & Machine LearningHardwareRoboticsSunnyvale, US
Brett Adcock(Founder)inLee Randaccio(Executive Officer)Dana Berlin(Executive Officer)Logan Berkowitz(Executive Officer)Colby Adcock(Director)Peter Welinder(Director)
Co-investors10T Fund1802 VenturesAlign VenturesAliya Capital PartnersAUDEO VENTURESAurum Venture Partners+54 more
Firezone provides zero-trust network access software built on WireGuard that secures connections to corporate applications and infrastructure.
Cloud ComputingCybersecurityDeveloper ToolsEnterprise SoftwareSan Francisco, US
Jamil Bou Kheir(Founder)in
Co-investorsY Combinator1984 Ventures Management, LlcAmino CapitalGaingelsUncorrelated Ventures
Flock Safety provides a platform that connects neighborhoods, businesses, and law enforcement to share verified incident information and enable coordinated emergency response based on shared evidence.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareGovTechHardwareSaaSAtlanta, US
Garrett Langley(Founder)inMatt Feury(Founder)inPaige Todd(Founder)
BoardIlya Sukhar(Director)
Co-investorsA*Andreessen HorowitzAnorak VenturesBedrockCoatue ManagementCRV (Charles River Ventures)+26 more
Futura is a digital dental laboratory solution that provides dentists with an intraoral scanner, clinical management portal, and lab services with training and support.
HealthtechMedical DevicesSaaSWellness & FitnessMexico City, MX
Tommaso Tomba(Founder)inLeonardo Miron(Founder)in
Co-investorsAlumni VenturesY Combinator0BSAlleyCorpAxon Partners GroupCarao Ventures+14 more
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 AgJude Gomila+4 more
Golden builds a self-constructing knowledge graph that combines artificial and human intelligence to automatically map and reconcile human knowledge from millions of disparate sources.
AI & Machine LearningData & InfrastructureEnterprise SoftwareSan Francisco, US
Jude Gomila(Founder)inFrancois Ajenstat(Founder)
Co-investorsFounders FundGigafundSV Angela16z cryptoAndreessen HorowitzDCVC (Data Collective)+14 more
Hirebolt provides access to a curated global network of verified engineers specializing in software, ML, data, and AI implementation, enabling companies to quickly identify and hire technical talent for building AI products.
AI & Machine LearningB2B MarketplacesEnterprise SoftwareHR TechLondon, GB
Co-investorsY Combinator7percent VenturesEntrepreneur First
Hydra develops Brokkr, an operating system that enables independent data centers to operate AI Factories by providing shared infrastructure, customer access, and monetization tools on a unified network.
AI & Machine LearningCloud ComputingMiami, US
Aaron Ginn(Founder)inAriel Deschapell(Founder)inGarrett Johnson(Founder)in
BoardSteve Jang(Director)in
Co-investorsAccelerator VenturesComcast VenturesDeepwater Asset ManagementDisruptive VenturesGraph VenturesHustle Fund+12 more
Joy provides customizable wedding websites and planning tools for couples organizing their weddings.
B2B MarketplacesConsumerDirect to ConsumerE-commerceMarketplacesSaaSSan Francisco, US
Vishal Joshi(Founder)inDorian Bach(Founder)inKaiwalya Kher(Founder)inDorian B(Founder)Michael Bach(Founder)
Co-investorsFernbrook Capital ManagementForerunner VenturesGeneral CatalystKube VCMVP VenturesObvious Ventures+31 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 CapitalAlumni VentureseLab Venturesgener8torGoat Rodeo CapitalGreat Oaks Venture Capital+19 more
Lingrove designs and manufactures Ekoa, a bio-based composite material made from flax and plant resins used as wall protection, wall coverings, ceilings, and millwork for hospitality, healthcare, and workplace interiors, as well as automotive interior applications.
CleantechConstruction TechNew MaterialsSan Rafael, US
Joseph Luttwak(Executive Officer, Director)in
BoardTalley Goodson(Director)Thomas Crow(Director)Stephen P. Welker(Director)
Co-investorsBoro CapitalCool Climate CollectiveDiamond Edge VenturesSeaX VenturesSoundboard Venture FundIndieBio+2 more
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(Founder)inBabak Raeisi Nia(Executive Officer, Director)Babak Raeisinia(Founder)
BoardPeter Lee(Director)inScott Brady(Director)inSam Smith-Eppsteiner(Director)in
Co-investorsAIX VenturesAlumni VenturesATEL VenturesAtento CapitalBalerion Space VenturesCadron Capital Partners+16 more
An AI research organization that develops interface innovations and neural technologies, focusing on human-AI interaction breakthroughs including neural signal processing and thought decoding methods.
AI & Machine LearningConsumerDeep TechDigital HealthHardwareLondon, GB
Ekram Alam(Founder)inJack Baber(Founder)in
Co-investorsY CombinatorLearn CapitalBlack Mountain VentuesFlucas VenturesScrum VenturesAsymmetry Ventures+4 more
OneText provides SMS marketing software with text-to-buy functionality, AI-powered product recommendations, and live concierge support for ecommerce brands.
E-commerceFintechMarketing TechSaaSSan Francisco, US
Jonathan Fudem(Founder)inDaniel Brain(Founder)in
Co-investorsSterling RoadY CombinatorCoatue ManagementGood FriendsLobster CapitalPioneer+2 more
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(Founder)inNathan Kondamuri(Founder)in
BoardRick Yang(Director)inAlex Gurevich(Director)in
Co-investorsAdvancit CapitalAlumni VenturesAngel Capital ManagementBaukunstblue 9 capitalBreak Trail Ventures+17 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 CombinatorGaingels515 VenturesFoundersSafar Partners
Pirouette develops self-injection devices for chronic condition management at home, featuring hidden-needle technology to reduce injection anxiety.
BiotechHardwareHealthtechMedical DevicesNew Hampshire, US
Conor Cullinane(Co-Founder, Chairman, CEO, President, Principal Investigator)Matthew J. Kane(Co-Founder, Secretary, and Chief Operating Officer)Elijah Kapas(Co-Founder and Chief Technology Officer)
Co-investorsGaingelsLiquid VenturesSafar PartnersY Combinator
Princeton NuEnergy develops proprietary closed-loop manufacturing processes for lithium-ion battery materials using low-temperature plasma-assisted separation technology.
Circular EconomyCleantechEnergyNew MaterialsPrinceton, US
Co-investorsHonda Innovations Silicon ValleyWorldQuant Ventures
Posh builds rapidly deployable battery storage and on-site power generation systems for commercial, industrial, and data-center customers, paired with intelligent energy management software.
Advanced ManufacturingAI & Machine LearningCleantechClimate TechEnergyEnterprise SoftwareHardwareSan Francisco, US
Minh Chung Hoang(Founder)inAvante Price(Founder)Avante Price Eli Taylor-Lemire(Founder)Eli Taylor-Lemire(Founder)Karan Kashyap(Founder)Matt McEachern(Founder)
Co-investorsBeni Venture CapitalMetaplanetOUTBOUND CAPITALWorldQuant VenturesY CombinatorAsymmetry Ventures+17 more
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 VenturesPrelude VenturesTechEnergy VenturesThe Engine VenturesXplorer Capital+6 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)inDagong Zhou(Executive Officer, Director)Joe Zhou(CEO)inHoward Schmidt(Director)
BoardChristina Karapataki(Director)inMatthew Nordan(Director)in
Co-investorsBreakthrough Energy VenturesClean Energy VentureCongruent VenturesNXT VenturesSorenson Impact FoundationClean Energy Ventures
San Jose, US
Roman Piszcz(Executive Officer, Director)Andrew Khor(Director)
BoardLoren Straub(Director)in
Co-investorsAlumni VenturesBowery CapitalFJ Labs
Rain AI develops energy-efficient hardware specifically designed for artificial intelligence workloads.
AI & Machine LearningDeep TechHardwareSemiconductors
Jack Kendall(Founder)inGordon Wilson(Founder)Juan Claudio Nino(Founder)in
Co-investorsAirbus VenturesGREP VCLiquid VenturesSam AltmanY CombinatorDeepwater Asset Management+9 more
Rho offers a business savings account that spreads idle cash across 400+ FDIC-insured banks (via American Deposit Management) for up to $75M in deposit coverage and yield.
Enterprise SoftwareFintechSaaSNew York, US
Everett Cook(Founder)inAlex Wheldon(Founder)
Co-investorsClaritas CapitalClocktower VenturesConsenSys MeshFlucas VenturesInspired CapitalRecall Capital+11 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)inJeff Carleton(Founder)Mike Cook(Founder)
Co-investorsAlumni VenturesDERIVE VENTURESInitialized CapitalMassMutual VenturesMenlo VenturesMultiplier Capital+7 more
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(Founder)inCindy Taff(Founder)
BoardWilliam Restrepo(Director)Clay Shamblin(Director)Staffan Qvist(Director)in
Co-investorsCarbonCubit CapitalAll AboardCarbon Direct
Sempre Health provides digital health solutions focused on patient engagement and outcomes management for the healthcare industry.
Digital HealthHealthtechSan Francisco, US
Anurati Mathur(Founder)inSwaraj Banerjee(Founder)inRobert S. Spalding(Executive Officer, Director)Ashley Carroll(Director)
BoardJenny Abramson(Director)inTyler Rowe(Director)
Co-investorsBlue Venture FundsCencora VenturesCerity Partners VenturesEcho Health VenturesLifeforce CapitalRethink Impact+3 more
Skillfully provides verified skills data for workforce decisions through performance-based work simulations rather than proxy measures.
Enterprise SoftwareHR Tech
Co-investorsBetter Ventures Central LlcFounders NetworkSVQuad
Space Forge develops high-quality substrates for semiconductor applications, using microgravity manufacturing in space to reduce material defects and produce higher-purity, higher-performance materials.
New MaterialsSemiconductorsSpace TechCardiff, GB
Joshua Western(Founder)in
Co-investorsE2MC VenturesHelios CapitalStarbridge Venture Capital LlcTrousdale VenturesType One VenturesUnruly Capital+7 more
Space Forge manufactures satellite components and advanced materials in space, with research and manufacturing facilities across the UK, US, and Portugal.
Advanced ManufacturingNew MaterialsSemiconductorsSpace TechCardiff, GB
Co-investorsFJ LabsBritish Business BankE2MC VenturesGaingelsSpaceFundStellar Development Foundation+4 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)inArchan Rao(Executive Officer, Director)Douglas Booms(Executive Officer)inRyan Harris(Executive Officer)in
BoardDipender Saluja(Director)Greg Wasserman(Director)
Co-investorsAngeleno GroupArcTern VenturesClimate CapitalCollaborative FundCongruent VenturesDesigner Fund+21 more
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)in
BoardChristian Garcia(Director)inPhil Harris(Director)inMorgan Beller(Director)in
Co-investorsAcequia Capital (AceCap)AF WPartnersATEL VenturesAurelia FoundryBalerion Space VenturesBeyond Capital+51 more
Teamworks builds technology for athletes and the organizations that support them, serving elite sports teams and organizations.
AI & Machine LearningEnterprise SoftwareSaaSSports TechDurham, US
Zach Maurides(Founder & Chief Executive Officer)inMitch Heath(Co-Founder)inKyle Charters(Executive Officer)inJames Coffos(Executive Officer, Director)in
BoardDan Williams(Director)inHolly Maloney(Director)in
Co-investorsAthletic VenturesAtlanta Tech VillageBlossom Street VenturesDelta-v CapitalDuke Capital PartnersGeneral Catalyst+4 more
TransAstra develops propulsion systems and telescope technology for space operations.
Advanced ManufacturingSpace TechLos Angeles, US
Joel Sercel(Founder)in
Co-investorsJude GomilaSoma CapitalValkyrieY CombinatorAcequia Capital (AceCap)Cathexis Ventures+10 more
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
AlgaBoomBrollyGenecisMachinaPairPrinceton NuEnergyQuidnet EnergySageSTOKETixr
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.

































































































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