Fourth Realm — Full Portfolio

Revolutionizing space technology to make life multi-planetary

Hawthorne, US

EMElon Musk(Founder)inBJBret Johnsen(Executive Officer)inGwynne Shotwell(Executive Officer, Director)Tom Mueller(Founder)

BoardAGAntonio Gracias(Director)inSJSteve Jurvetson(Director)in

Co-investors1/1/1 Capital13137 Ventures181802 Ventures202080 Ventures3S3Spoke Capital4D4DX Ventures+231 more

Avion School is a coding bootcamp that teaches web development skills to beginners and career-switchers, offering programs in JavaScript and Ruby with job placement support for graduates.

EdTechManila, PH

JYJohn Young(Founder)inJohn B. Young(Founder)Victor Rivera

Co-investorsAMAmand VenturesY Y CombinatorIMImmeasurableJUJustin Mateen

Barn2Door provides software and services for farmers to sell their products online and in person, automating orders, payments, inventory, email campaigns, and delivery logistics.

AgTechE-commerceFoodTechSaaSSeattle, US

JMJanelle Maiocco(Founder)inJAMES MAIOCCO(Executive Officer, Director)

BoardDDDUNCAN DAVIDSON(Director)inKATHY CHILL(Director)

Co-investorsBUBullpen CapitalCOConductor CapitalFFFf Venture CapitalGAGaingelsHEHearstLabNANavigate Ventures+6 more

Christine Marzano(Founder)in

Co-investorsGAGaingelsWXWXR Fund

Colombian B2B e-commerce platform that lets neighborhood corner shops restock inventory online with next-day delivery.

Bogota

Jose Jair Bonilla(Founder)inOscar Sarria(Founder)inCarolina García(Founder)José Bonilla(Founder)Oscar Sarria Guerrero(Founder)

BoardSimon Borrero(Director)

Co-investorsALAlter GlobalFEFEMSA VenturesFJFJ LabsFLFlucas VenturesINInQlabINInterplay Ventures Early Stage Management Llc+11 more

Team82 is a cybersecurity vulnerability and threat research team that identifies software and firmware vulnerabilities in cyber-physical systems.

AI & Machine LearningCybersecurityIoT

GAGalina Antova(Founder)inYVYaniv VardiinAmir Zilberstein(Founder)Benny Porat(Founder)

BoardDavid Millstone(co-CEO of Standard Industries and co-CIO of Standard Investments)

Co-investorsARArcher Capital GroupARArcher Venture CapitalASAster CapitalB B CapitalBEBessemer Venture PartnersBMBMW i Ventures+20 more

Cohesity provides cyber resilience software that helps organizations identify and protect the minimal critical datasets and systems needed to restart operations after ransomware attacks or disasters.

Cloud ComputingCybersecurityData & InfrastructureEnterprise SoftwareSan Jose, US

MAMohit Aron(Founder)inSPSanjay Poonen(CEO and President)inTRTIMOTHY ROBBINS(Executive Officer)inLORENZO MONTESI(Executive Officer)inROB SALMON(Executive Officer)inSanjay Poonen (CEO)(Founder)

Co-investors3S3Spoke CapitalACAccelADAdit Ventures Management, LlcARArtis VenturesBABattery VenturesCICisco Investments+29 more

Emulate builds Organ-on-a-Chip systems, including platforms, consumables, and pre-assembled BioKits with validated human cell models, to support drug discovery research.

BiotechDeep TechHealthtech

DIDonald Ingber(Founder)inDLDaniel Levner(Co-Founder & CTO)inJCJim Corbett(CEO, Board Member)inLELorna Ewart(Chief Scientific Officer)in

Co-investors+N+ND CapitalNONorthpond VenturesALALS Investment FundALAlumni VenturesALAlwyn CapitalSTStray Dog Capital+4 more

Enable Us provides buyer enablement capabilities that allow customers to view tailored content, get answers, and make purchases.

AI & Machine LearningEnterprise SoftwareSaaSSales TechSan Francisco, US

JJJinal Jhaveri(CEO)inAdam Pearson(Sales & Co-founder)inAndrey Bolaños(CTO & Co-founder)inGalen Li(CPO & Co-founder)inLynn Pietryga(CCO)inEmily Frary(Head of Human Resources)

Co-investorsRERebel FundRURuna CapitalY Y CombinatorBEBessemer Venture PartnersDEDecent CapitalDRDragon Capital+8 more

Enable Us provides buyer enablement capabilities that allow customers to view tailored content and get answers.

Enterprise SoftwareSaaS

Co-investorsBVBVP InvestorsFRFresco Capital

Enki provides a platform that trains employees on AI and data tools relevant to their workflows, with customized learning plans, personal mentorship, and team collaboration features to drive organizational adoption.

AI & Machine LearningEdTechEnterprise SoftwareFuture of WorkHR TechSaaS

KMKirill Makharinsky

Expedock builds dedicated remote outsourcing teams, supported by Operations Managers and QA specialists, that handle back-office workflows such as freight operations, documentation, billing, data annotation, RLHF, model evaluation, and healthcare administration.

AI & Machine LearningFuture of WorkLogistics & Supply Chain

JTJeff Tan(Founder)inKing Alandy Dy(Founder)Rui Aguiar(Founder)

Co-investorsDODorm RoomFOFoxmont Capital PartnersINInsight PartnersKIKickstart VenturesPEPear VCSOSoma Capital+5 more

Fieldguide provides automated workflows and collaborative tools for assurance and advisory practices to serve clients more effectively.

AI & Machine LearningEnterprise SoftwareFuture of WorkSaaSSan Francisco, US

JCJin Chang(Founder)inCSChris Szymansky(Founder/CTO)inJWJin W. Chang(Founder)inJin Chang Chris Szymansky(Founder)Natalia Sluzky(Technical Sourcer)Alex Liu(Software Engineer)

Co-investors8V8VCBEBessemer Venture PartnersFLFloodgateGEGeodesic CapitalPOPoint72 VenturesY Y Combinator+8 more

Caleb Avery(Founder)

Co-investorsABAbstract VenturesBOBootstrap Venture PartnersCLClocktower Ventures

Gr4vy provides a cloud-based payment orchestration platform that enables merchants and payment platforms to manage their payment strategies without coding.

Enterprise SoftwareFintechSaaS

JLJohn Lunn(CEO & Founder)inAMAli Minaei(Co-founder & CTO)inCBCristiano BettainOTOlga Tish(CFO)inZVZubin Vandrevalain

Co-investorsACActivant CapitalFIFirestartrMAMarch Capital PartnersNYNycaNYNyca PartnersPLPlug and Play Ventures

Great Expectations provides a data quality and governance platform that enables teams to define, test, and monitor data expectations across their data systems with automation and collaborative tools.

Data & InfrastructureDeveloper ToolsEnterprise Software

Abe Gong(Founder)James Campbell(Founder)

Co-investorsCRCRV (Charles River Ventures)MEMedMountain VenturesSASAV (Scale Asia Ventures)ZEZero Prime VenturesDAData Community Fund

Kahoona provides a context generation layer for websites that interprets visitor behavior — a data modality it calls Digital Body Language — to understand and act on anonymous users and AI agents before login or identity exists.

AI & Machine LearningData & InfrastructureMarketing Tech

Alon Ashkenasi(Founder)in

Co-investors9191 VenturesCACardumen CapitalICICON - Israel Collaboration NetworkMOMonte Carlo CapitalPLPlug and Play VenturesGLGlobal Founders Capital

ALAlex Lee(Founder)inNhon Ma(Founder)in

Co-investorsALAlumni VenturesGEGeneral CatalystINInterplay Ventures Early Stage Management LlcKAKapor Capital

Overfit combines human coaching for accountability with AI-generated personalized workout plans for fitness users seeking guidance and customized exercise routines.

AI & Machine LearningHealthtechWellness & FitnessSan Francisco, US

ASAjay Saini(Founder)inVFVahid Fazel-Rezai(Founder)in

Co-investorsY Y CombinatorHOHOF CapitalKLKleiner PerkinsSOSoma Capital

Pahdo Labs is building an online multiplayer game designed as a persistent, shared virtual world where players create, own, and share content and pursue long-term mastery.

ConsumerGamingMedia & EntertainmentNew York, US

Daniel Zou(Founder)

Co-investorsANAndreessen HorowitzBOBoxGroupGLGlobal Founders Capital2 2 Punks CapitalGAGaingelsSCScott Sunarto+2 more

Parlor is a domain intelligence service that ranks expired domains by SEO authority, ingesting auction feeds and zone files every six hours and scoring each domain on seven signals to surface a shortlist worth bidding on.

Data & InfrastructureMarketing TechSaaS

Co-investorsFIFirst Round CapitalLELerer HippeauTHThrive Capital

Perl Street provides financial infrastructure and software for renewable energy investors and developers to manage capital deployment, compliance, and operations related to clean energy projects, particularly those funded through the Greenhouse Gas Reduction Fund.

B2B MarketplacesCleantechClimate TechFintechSaaSAustin, US

TATooraj Arvajeh(Founder)inAVArvind Vermani(Founder)inDakota Wixom

Co-investorsCOCollaborative FundFJFJ LabsGAGarage CapitalIMImpact Ventures Management Pty LtdKEKeiki CapitalMSMS&AD Ventures+9 more

Quadrant Eye develops at-home diagnostic technology to conduct comprehensive eye examinations.

AI & Machine LearningHealthtechMedical DevicesSan Francisco, US

QWQuinn Wang(Founder)inKHKristine Hara(Founder)inJobs HR(HR)

Co-investorsY Y CombinatorAMAmino CapitalCOConscience VCHAHarvard Management CompanyKHKhosla VenturesLOLombardstreet Ventures+3 more

OpenPhone is a business phone system offering calling, messaging, and a lightweight CRM, with the ability to share a phone number across teammates like a shared inbox.

Cloud ComputingEnterprise SoftwareFuture of WorkSaaSSales TechSan Francisco, US

MRMahyar Raissi(CEO)inDKDaryna Kulya(Founder)inThomas Andrew DeLong(Executive Officer)Naman Desai(Executive Officer)Todd Goldstein(Director, Promoter)Amit Patel(Executive Officer, Director, Promoter)

Co-investorsY Y CombinatorCHChapter OneCRCraft VenturesGAGarage CapitalGEGeneral CatalystKIKindred Ventures+15 more

Neel Yerneni(Founder)Tucker Haas(Founder)

Co-investorsKIKindred Ventures

Reality Defender develops an AI platform for detecting deepfakes and synthetic media, serving enterprise organizations to prevent fraud and impersonation.

AI & Machine LearningCybersecurityDefense TechEnterprise SoftwareSaaSNew York City, US

BCBen Colman(CEO)inGBGaurav Bharaj(Co-Founder, AI)inASAli Shahriyari(CTO)inLBLars Buttler(Founder)inMilos Fulton(Head of Finance/Operations)inNicolò Bonettini(R\u0026D)

Co-investorsAMAmino CapitalARArgon VenturesBABantam GroupBOBooz Allen VenturesDCDCVC (Data Collective)EVEvolution VC Partners+21 more

Will Henry(Founder)in

Co-investorsVEVertex Ventures Sea Management Pte. Ltd.

Sirona Medical builds RadOS, a cloud-native platform that reimagines radiology practice in the AI age for physicians and radiology practices.

AI & Machine LearningDigital HealthHealthtechSan Francisco, US

CACameron Andrews(Founder & President)inAnkit Goyal(Executive Officer, Director)

BoardFGFrancisco Gimenez(Director)in

Co-investors8V8VCGRGreatPoint VenturesRORose Park AdvisorsGLGlobal Founders CapitalXFXfund

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

Advanced ManufacturingDeep TechHardwareSpace TechSeattle, US

ALAndy Lapsa(Founder)inTFTom Feldman(Founder)inKHKelly Hennig(Executive Officer)inSula Bondaruk(Recruiter)Marla Nielsen(Recruiting Coordinator)Chantal Penton(Recruiter)

Co-investorsABAbbhi CapitalACAcequia Capital (AceCap)AFAF WPartnersATATEL VenturesAUAurelia FoundryBABalerion Space Ventures+61 more

Stripe builds payment and financial infrastructure software that lets businesses accept payments and run their operations online.

Developer ToolsEnterprise SoftwareFintechSaaSSan Francisco, US

JCJohn Collison(President)inPCPatrick Collison(CEO)inWGWilliam Gaybrick(Executive Officer)inGBGreg Brockman(Founding Engineer, then first CTO)inSHSarah HeckinRyan Seekely(Engineering Manager)

Co-investors141435 Capital50500 GlobalADAdvaita CapitalADAdventure FundAGAglae VenturesALAliya Capital Partners+103 more

TalkShop.live is a live shopping platform where users watch live video streams and buy featured products directly during the broadcast, using its patented shoppable embedded point-of-sale technology.

E-commerceMedia & EntertainmentRetail Tech

BMBryan Moore(Founder)inTina Moore(Founder)in

Co-investorsFLFlucas VenturesGAGaingelsPRProgress VenturesSPSpero Ventures

Text Blaze is a productivity tool that creates text snippets and templates to reduce repetitive typing across web applications.

Developer ToolsEnterprise SoftwareFuture of WorkSaaSSan Francisco, US

DBDan Barak(Founder)inSFScott Fortmann-Roe(Founder)inGaurang Tandon(Engineer)

Co-investorsY Y CombinatorBOBossa InvestFOFoley VenturesGLGlobal Founders CapitalPAParadox CapitalSUSusa Ventures+1 more

Tilled provides payment facilitation services delivered as a software-as-a-service platform, enabling software companies to embed payment processing capabilities, monitor merchant transactions, and generate revenue from payments across the U.S. and Canada.

Enterprise SoftwareFintechSaaSBoulder, US

CACaleb Avery(Executive Officer, Director)inJAJohn Allen(Executive Officer, Director)in

BoardBCBen Capell(Director)inRLRebecca Lynn(Director)inAbhinav Tiwari(Director)JWJohn Wallington(Director)in

Co-investorsABAbstract VenturesALAlumni VenturesBOBootstrap Venture PartnersCACanvas VenturesCLClocktower VenturesFJFJ Labs+7 more

Venice, US

Paul Eremenko(Founder)Jason Chua(Founder)Jon Gordon(Founder)

Co-investorsTRTrucks VCAIAirbus VenturesANAndreessen HorowitzCOCoatue ManagementGLGlobal Founders CapitalHAHAWKTAIL+7 more

Varda industrializes low Earth orbit by manufacturing pharmaceuticals and other specialized products in space, then returning them to Earth via reusable reentry capsules.

BiotechDeep TechSpace TechEl Segundo, US

WBWill Bruey(Founder)inDADelian Asparouhov(Founder)inDaniel Marshall(Founder)Trae Stephens(Director)Josh Wolfe(Director)

Co-investorsALAlso CapitalCACaffeinated CapitalFOFounders FundGEGeneral CatalystKHKhosla VenturesLULux Capital+38 more

A Vietnamese-language football streaming site offering live match links, schedules, scores, standings, highlights and sports news for leagues such as the Premier League, Champions League and V-League.

ConsumerMedia & Entertainment

Co-investorsBLBling CapitalSOSoma Capital

Zap Energy develops advanced nuclear systems built on a shared platform that combines fission and fusion technologies to deliver firm, carbon-free electricity and process heat in modular, deployable formats.

CleantechDeep TechEnergyEverett, US

Benjamin Conway(Executive Officer, Director)USUri Shumlak(Founder)inBNBrian Nelson(Distinguished Technology Fellow & Cofounder)inBCBenj Conway(Founder)inZJZabrina Johal(CEO)inBrian A. Nelson(Founder)

Co-investorsBRBreakthrough Energy VenturesDCDCVC (Data Collective)ENEnergy Impact PartnersLELeitmotifLOLowercarbon CapitalVAValor Equity Partners+2 more