Fundraising Fox

IBX

Venture capital

Rockville · Seed · 13 people tracked

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Investment thesis

IBX describes itself as an innovation and investment firm dedicated to advancing the state of humanity and human knowledge. It pursues new frontiers across space, technology, and energy with the stated aim of expanding human potential and creating positive impact in the world. The firm frames its approach around audacious pursuit as a means of connecting people, protecting the planet, and advancing human ways of life.

Source: firm website, verified Aug 3, 2026.

Stage
Seed
HQ
Rockville, MD, US
Instruments
Equity
Last 12 months
1 investment
Tracked investments
7

Team · 13 people

from the firm's website
Ted Sonnenschein· Vice Chairman

What they invest in

from 6 of 7 portfolio companies

Deep Tech ×5Cleantech ×3Defense Tech ×3Space Tech ×3Energy ×2Hardware ×2New Materials ×2EdTech ×1

HQs:United States×3

Investments · 7 tracked

founders shown can be your intro path
Intuitive Machinesintuitivemachines.comNASDAQ: LUNR

Co-investorsBeyond Earth VenturesCapital FactoryIndustrious VenturesiNetworksKluz VenturesTactico

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

PartnerAnton Brevde· led

Co-investors2am VCAlumni VenturesBasecamp FundBeyond Earth VenturesC5 CapitalChenel Capital Partners+20 more

Casimirspacecasimirspace.comin𝕏

Casimir develops power-generation technology based on harnessing energy from the quantum vacuum using custom-engineered Casimir cavities with midplane pillar structures.

CleantechDeep TechEnergyHardware

Sonny(Founder)in

Co-investorsDraper AssociatesDeep Future

Ptx Llcptx-llc.com

PTX provides engineering services and strategic materials technology to U.S.

Deep TechNew MaterialsSpace Tech

Quantum Spacequantumspace.usin

Quantum Space is a space defense and orbital mobility company that builds Ranger, a maneuverable spacecraft designed to operate from low Earth orbit to geostationary and cislunar space.

Deep TechDefense TechSpace TechRockville, US

PartnerAnton Brevde· led

Co-investorsCortado VenturesPrime Movers Lab

Terrionterrion.ioSeed · May 2026

Terrion is building an integrated domestic supply chain for synthetic graphite in the United States, covering feedstock through finished material for defense, energy, and industrial applications.

CleantechDeep TechDefense TechNew Materials

DustinPeteMichael

BoardKam

X-Energy Websitex-energy.comin𝕏

X-energy develops advanced nuclear energy technology, including small modular high-temperature gas reactors and TRISO fuel.

CleantechDeep TechEnergyRockville, US

Carter Lawson(Secretary)J. Clay Sell(Chief Executive Officer)Gregory Goff(Director)Kamal Ghaffarian(Chairman of the Board)Daniel Gross(Director)Kathleen Hyle(Director)

Co-investorsG SquaredGula Tech AdventuresIndustrious VenturesStack CapitalThe Venture CollectiveEmerson Collective Investing

Exits · 1

IPOs and acquisitions across the tracked portfolio

Intuitive MachinesNASDAQ: LUNR

Frequently asked questions

How many investments has IBX made?
IBX has 7 tracked investments, including 1 dated in the last 24 months.
What stage does IBX invest at?
IBX invests at the Seed stage.
What sectors does IBX focus on?
IBX focuses on Deep Tech, Defense Tech, Energy, Space Tech.
Where is IBX located?
IBX is headquartered in Rockville, US.
Who does IBX co-invest with?
IBX most often shares deals with Beyond Earth Ventures, Industrious Ventures, Prime Movers Lab, among 31 tracked co-investors.

Media · Podcasts & interviews

featuring the team

DNA of Space Companies, with Anton Brevde (IBX Inc.)

Payload · Anton Brevde

Images

IBX photo

Co-investors · 2

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.

Both backed · 1
$100K – $5M
Scout Ventures

Scout VC is a venture capital firm backing frontier technology companies led by founders from the military, intelligence community, and national research labs.

$2M – $5M

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

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