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SpaceFund

Venture capitaloperating company · company profile

Houston · Pre-Seed–Series A · 6 people tracked

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Investment thesis

SpaceFund is an early-stage venture capital firm dedicated exclusively to the emerging commercial space economy. It invests in visionary yet practical startups targeting multi-billion dollar markets, deliberately avoiding traditional aerospace while considering space transportation, critical components, and the supply chains needed for space operations and exploration. The firm combines dedicated sector focus, experienced operators and investors, and ongoing proprietary market research to identify startups likely to matter in the rapidly expanding new-space ecosystem. SpaceFund works actively with portfolio companies from inception toward durable scale and successful exits, and publishes research on market size, financing, and exit trends to support investors and founders across the industry.

Source: firm website, verified Sep 27, 2026.

Stage
Pre-Seed–Series A
HQ
Houston, TX, US
Leads rounds
Follows
Instruments
Equity
Founded
2018
Tracked investments
25
Unicorns
1
IPOs
1

Team · 6 people

from the firm's website & public directories
James Mertz· Managing Partnerin𝕏

Founder mafia

4 people who came through SpaceFund went on to found or lead other companies.

What they invest in

from 21 of 25 portfolio companies

Space Tech ×19Hardware ×11Deep Tech ×9Defense Tech ×6Advanced Manufacturing ×2AgTech ×2AI & Machine Learning ×2New Materials ×2

HQs:United States×14United Kingdom×2Canada×1Vietnam×1

Investments · 25 tracked

founders shown can be your intro path

By year:2024 · 12021 · 32020 · 12016 · 12015 · 17 dated

SpaceXspacex.comNASDAQ: SPCX

Revolutionizing space technology to make life multi-planetary

Hawthorne, US

Elon Musk(Founder, CEO & Chief Engineer)inBret Johnsen(Executive Officer)inGwynne Shotwell(Executive Officer, Director)

BoardAntonio Gracias(Director)inSteve Jurvetson(Director)inDonald Harrison(Director)

Co-investors1/1 Capital137 Ventures2080 Ventures3Spoke Capital4DX Ventures7BC Venture Capital+168 more

Edengrowsystemsedengrowsystems.com✓ verified

Eden Grow Systems builds modular aeroponic grow towers based on NASA CELSS technology, growing fruits and vegetables without soil and with minimal water for residential to commercial use.

AgTechCleantechFoodTechHouston, US

Bart Womack(Co-founder)Jeff Raymond(Co-founder & COO/CTO)

Deep Space IndustriesinNov 2015SEC filingmedium confidence

San Jose, US

Rick Tumlinson(Director)inWilliam D Miller(Executive Officer)Mark Sonter(Director)

BoardPetr Johanes(Director)

Board seatRick Tumlinson· per SEC Form D · $4M raise · filed Mar 2018

Axiom Spaceaxiomspace.comin𝕏

Axiom Space develops commercial space stations and provides access to low-Earth orbit microgravity environments for research, manufacturing, and innovation by governments, researchers, and organizations.

Defense TechEdTechHardwareSpace Tech

Dr. Kam Ghaffarian(Executive Chairman)inMichael Suffredini(Founder, former CEO and President)in

Co-investors2am VCAlumni VenturesAurum Venture PartnersBascom VenturesBasecamp FundBeyond Earth Ventures+35 more

Cognitive Spacecognitivespace.comin𝕏

Cognitive Space develops AI-driven automation software for satellite operations, enabling constellation operators to scale while meeting operational requirements.

AI & Machine LearningDefense TechSaaSSpace TechHouston, US

Marc Bell(Co-Founder and CEO)Guy de Carufel(CEO & Founder)inDax Garner(CTO)inJeff Edwards(VP of Engineering)inHanna Steplewska(Executive Officer, Director)Jennifer Roberts(Director)in

Co-investorsArgon VenturesCapital InnovatorsCreative Destruction Lab (CDL)Dolby Family VenturesDraper AssociatesGlasswing Ventures+9 more

Cosmic Shieldingcosmicshielding.comApr 2021

Cosmic Shielding develops radiation-shielding technology that adapts commercial off-the-shelf (COTS) electronics — including AI-capable GPUs, sensors, and cameras — for reliable operation in space.

Deep TechEnergyHardwareSpace TechAtlanta, US

Yanni Barghouty(Co-Founder & CEO)inLembit Sihver(Co-Founder & CTO)inMichael Ghadaksaz(Chief Product Officer)

Co-investorsActuate VenturesHelios CapitalOutsidersStarbridge Venture Capital LlcType One VenturesWorldQuant Ventures

Hydrosathydrosat.comin

Hydrosat converts satellite and ground data into actionable information for sustainable agriculture and water management.

AgTechAI & Machine LearningClimate TechData & InfrastructureSpace TechWashington, US

Pieter Fossel(CEO)inScott Alan Soenen(Executive Officer)Alan Royce Dalby(Executive Officer, Director)Yun Jin Kim(Executive Officer)

BoardAndrew Robert Dearing(Director)inAdam Niewinski(Director)in

Co-investorsBlue Bear Capital PartnersExpon CapitalFREEFLOWHemisphere Ventures LLCIndustrious VenturesOTB Ventures+6 more

Longshotlongshotspace.comin𝕏

Longshot is developing reusable ground-based acceleration infrastructure that shifts more launch energy and systems onto the ground using compressed-light gas acceleration, aiming to lower the cost of hypersonic testing and space access.

Deep TechDefense TechSpace TechAlameda, US

Mike Gracein

Co-investorsActuate VenturesAurelia FoundryDraper AssociatesMyelin VCSouth Park CommonsStarship Ventures+1 more

Made In Spacemadeinspace.us

Made In Space, Inc. develops 3D printing and manufacturing technology for use in space, having built the first 3D printer to manufacture an object in orbit through a collaboration with NASA.

Advanced ManufacturingHardwareSpace Tech

Mike Chen(Cofounder; Director of R&D)Jason Dunn(Cofounder; Director of R&D)inAaron Kemmer(Cofounder; Director of R&D)inMichael Snyder(Cofounder; Director of R&D)in

Co-investorsARC Angel FundSpace CapitalStarbridge Venture Capital LlcVU Venture PartnersStarlight Ventures

MAX SPACEgetmaxspace.comin

Max Space builds expandable space habitats designed to provide large pressurized volume at lower cost for low Earth orbit, the Moon, and Mars.

Deep TechHardwareSpace Tech

Aaron Kemmer(Founder)in

Co-investorsAlumni VenturesAurelia FoundryAurum Venture PartnersDraper AssociatesE2MC VenturesIA Seed Ventures+3 more

Nebulacomputenebulacompute.comin𝕏

Nebula Space Enterprise, Inc. is a space-focused holding company made up of five entities—Fabrx, Nebula Cybersecurity, Nebula Compute, Nebula Incubator, and Nebula Media—working on deep space access and space domain operations for government, enterprise, and the scientific community.

Cloud ComputingCybersecurityDeep TechSpace Tech

Michael Bloxton(CEO)in

Co-investorsEvolution VC Partners

Novo Spacenovo.spacein𝕏Jun 2024

Novo Space develops high-performance, rad-tolerant, modular electronics for space missions.

HardwareSpace TechCambridge, US

Rodrigo Diez(CEO & Founder)inFacundo Jorge(CTO & Founder)inPete Amaro(Director)in

Co-investorsAIR CapitalAurelia FoundryDraper CygnusL'ATTITUDE VenturesReinventure CapitalSpacecadet Ventures+2 more

Obrutaobruta.comin𝕏

Obruta develops the RPOD Kit, a hardware and software solution that enables spacecraft to perform autonomous rendezvous, proximity operations, and docking for on-orbit services.

Deep TechHardwareRoboticsSpace TechOttawa, CA

Kevin StadnykDr. Kirk Hovell

Orbit Faborbitfab.comin𝕏May 2020 · $10M

Orbit Fab builds the in-space propellant supply chain, offering commercial spacecraft refueling services and standardized refueling interfaces to enable reusable spacecraft and a sustainable space economy.

HardwareSpace TechSanta Clara, US

Daniel Faber(Co-Founder)inJeremy Schiel(Executive Officer, Director)inPeter Shaper(CEO)inChingti Yang(Executive Officer)

Co-investors2045 VenturesACADEMY INVESTORAIN VenturesAsymmetry VenturesAurum Venture PartnersCapital Factory+19 more

Radian Aerospaceradianaerospace.comin𝕏Feb 2016 · $27.5M

Radian Aerospace is developing fully reusable spaceflight vehicles, including Radian One, a single-stage-to-orbit mission platform for routine access to Low Earth Orbit, and R3V, a reusable reentry capsule for hypersonic testing and rocket cargo.

Deep TechHardwareSpace TechRenton, US

Curtis Gifford(Chief Financial Officer, Chief Operating Officer, & Co-Founder)inRichard Humphrey(Chief Executive Officer & Co-Founder)inLivingston Holder(Chief Technology Officer & Co-Founder)inJeff Feige(Chief Revenue Officer & Co-Founder)in

Co-investorsAdvection Growth CapitalAlumni VenturesBalerion Space VenturesEvolution VC PartnersFine Structures VenturesHCVC+9 more

Redwire Spaceredwirespace.comin𝕏

Redwire is an integrated aerospace and defense company building space infrastructure, autonomous aircraft, and multi-domain operations technology using digital engineering and AI automation.

Defense TechHardwareSpace Tech

Co-investorsAE Industrial PartnersIndustrious Ventures

Rhea Space Activityrheaspaceactivity.cominNov 2021

Rhea develops SPARROW, an autonomous navigation system for air, land, and sea vehicles that operates independently of GPS in denied environments using computational algorithms and optical sensors.

Deep TechDefense TechHardwareQuantum ComputingSpace TechWashington, US

Dr. Shawn Usman(Founder & Chief Executive Officer)

Co-investorsIron PrairieSeraphim Space

Skyloomskyloom.coin

Skyloom builds space-based optical communication systems that provide high-capacity data relay between satellites and from satellites to Earth in low Earth orbit.

Deep TechHardwareSpace TechBroomfield, US

Catharine Parnell(Executive Officer)Santiago Tempone(Executive Officer, Director)Marcos Franceschini(Executive Officer, Director)Flavio Guidotti(Director)

BoardMatias Mosse(Director)in

Co-investorsAIR CapitalBerkeley SkyDeck FundDraper CygnusE2MC VenturesIronGate Capital AdvisorsMyelin VC+2 more

Space Forgespaceforge.cominSeed · Dec 2021 · $10M

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 CapitalHelium-3 VenturesStarbridge Venture Capital LlcTrousdale VenturesType One Ventures+7 more

Space Forgespaceforge.co.ukin

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 LabsE2MC VenturesTrousdale Ventures

Spacefinancecompanyspacefinancecompany.com

Space Finance Company provides structured finance advisory and capital deployment for space industry transactions, leveraging expertise in space assets and projects.

FintechSpace Tech

Thespaceperspectivethespaceperspective.com𝕏

Xoilac TV (xoilaczzppz.tv) is a Vietnamese-language website for free live streaming of football matches with Vietnamese-language commentary, covering leagues such as the Premier League, La Liga, Serie A, Bundesliga, V-League, World Cup and Euro.

ConsumerMedia & EntertainmentDa Nang, VN

Voyager Spacevoyagertechnologies.comin𝕏

Voyager Technologies is a defense and space technology company developing capabilities in advanced electronics, mission management, orbital data centers, space exploration, spectrum dominance, and strategic systems across air, land, space, and cyber domains.

Deep TechDefense TechSpace Tech

Co-investorsCapital FactoryRiverbend CapitalSilent Ventures

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

SenVoyagerspaceholdings

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.

Exits · 1

1 IPOs

SpaceXNASDAQ: SPCX

Portfolio news

latest coverage across their companies

Frequently asked questions

How many investments has SpaceFund made?
SpaceFund has 25 tracked investments, 1 of which have exited.
What stage does SpaceFund invest at?
SpaceFund invests at the Pre-Seed, Seed, Series A stages.
What sectors does SpaceFund focus on?
SpaceFund focuses on AI & Machine Learning, Data & Infrastructure, Deep Tech, Defense Tech, Hardware, Mobility & Transportation, Robotics, Space Tech.
Where is SpaceFund located?
SpaceFund is headquartered in Houston, US.
Does SpaceFund lead rounds?
SpaceFund typically participates in rounds rather than leading them.
Who does SpaceFund co-invest with?
SpaceFund most often shares deals with Helios Capital, Industrious Ventures, Starbridge Venture Capital Llc, among 50 tracked co-investors.

Media · Podcasts & interviews

featuring the team

Keynote - The Space Revolution | Rick Tumlinson | Founder - Earthlight, New Worlds, SpaceFund

The EarthLight Channel · Rick Tumlinson

Co-investors · 6

1435 Capital

1435 Capital Management is an early-stage and growth-stage venture investor that backs technology companies across sectors and invests in late-stage pre-IPO secondaries.

Type One Ventures

Type One Ventures is a multi-stage venture capital firm focused on funding founders building technologies, infrastructure, and industrial systems aimed at advancing humanity toward an abundant, self-sufficient, and interplanetary future.

$100K – $5M
Addition

Addition is a venture capital firm that invests in early and growth-stage tech companies.

Both backed · 1
$1M – $500M
World Fund

World Fund is a European climate tech venture capital firm financing the transition to a decarbonised global economy, investing only in scalable technologies with significant emissions-reduction potential.

Both backed · 1
$1.1M – $16.5M
$12.7K – $12.7M
Afore Capital

Afore Capital is a $500M pre-seed venture fund that invests in pre-traction, early-stage companies, leveraging product and investment expertise to support founders from day zero.

$500K – $2M

Firms observed investing alongside SpaceFund, from public investor directories. Shared companies are the overlap with SpaceFund's recorded portfolio.

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