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Radius Capital

radius.capital · San Francisco, California

“Next-generation aerospace will be powered by software, AI, and robotics - not new aircraft. We invest in enabling technologies that unlock aerospace innovation: software, design tools, AI systems, robotics, advanced manufacturing, and novel concepts for autonomous operations.”

$100K – $1M
Check Size
Leads
Lead Tendency
~1 Month
Timeline
01Investment Thesis

Next-generation aerospace will be powered by software, AI, and robotics - not new aircraft. We invest in enabling technologies that unlock aerospace innovation: software, design tools, AI systems, robotics, advanced manufacturing, and novel concepts for autonomous operations.

Exclusion Criteria

No aircraft platforms, pure hardware plays without software/AI, consumer applications, or non-aerospace focused companies

02Investment Team
PS
Peter Shannon
Founder, Managing Director
LT
Luka Tomljenovic
Partner
03F4 Research Brief

Radius Capital Research

Investment Thesis

Radius Capital is a specialized aerospace-first venture capital firm founded in 2019 by Peter Shannon. The firm invests exclusively in early-stage deep tech, software, and AI systems that redefine what is possible in aerospace, robotics, and advanced mobility. Rather than investing in aircraft themselves, Radius Capital focuses on the enabling technologies that power next-generation aerospace capabilities: software, AI systems, robotics, advanced manufacturing, design and development tools, and novel concepts that unlock new possibilities in aerospace.

The firm's aerospace-first approach is fundamentally about building complex cyber-physical systems capable of operating autonomously and reliably in challenging real-world conditions. This expertise extends beyond aviation to influence broader industries including defense, autonomous systems, and industrial robotics. The partners bring rare combinations of deep aerospace domain expertise, operational experience, and direct involvement in U.S. national aerospace policy through advisory roles at NASA and the National Academies of Science.

Investment Stage and Check Size

Radius Capital is explicitly a seed-stage investor:

  • Primary Stage: Seed ($100K-$1M)
  • Secondary Stage: Pre-Seed (occasional)
  • Check Size: $100K-$1M per investment
  • Lead Tendency: Leads rounds

The firm pursues a concentrated investment strategy, leading early-stage rounds across the U.S., Europe, Israel, and Canada. They focus on companies with exceptional technical depth and aerospace domain expertise.

Portfolio and Recent Activity

Radius Capital maintains a focused aerospace-first portfolio of 12+ portfolio companies across enabling technologies:

Current Portfolio Companies:

  • Assaia - Computer vision systems for airport gate turnaround operations, bringing transparency and automation to airport operations
  • Danti - AI systems trained on geospatial data to answer complex questions about Earth observation, leveraging search and knowledge graphs
  • C-Infinity - AI-based mechanical intelligence transforming product design, assembly, and manufacturing processes
  • T-Robotics - Edge system cybersecurity for robotics and autonomous systems
  • Manna Drone Delivery - Last-mile drone delivery serving meals, coffee, and everyday items to consumers
  • Machina Labs - Machine learning applied to robotic sheet metal forming for aerospace and defense applications
  • Swarmer - Collaborative autonomy software for multi-robot systems
  • Drone-Hand - Drone autonomy in agriculture applications (stealth)
  • Istari - Digital engineering collaboration platform delivering software development agility to complex cyber-physical systems
  • PhysicsX - AI trained on physics fundamentals for rapid optimization of complex engineering designs in aerospace, energy, and medical industries
  • Orqa - Drones and subsystems for enterprise and defense applications
  • Worldscape - Data fabric for the AI era, building comprehensive data infrastructure

Investment Activity: The firm is actively deploying capital and maintaining a concentrated, high-touch approach to portfolio support through operational advisory roles.

Team and Expertise

Peter Shannon, Founder & Managing Director

  • Investor focused on the aerospace domain and advanced aerial mobility
  • Co-authored national strategy for Advanced Air Mobility as member of the Committee on Urban Air Mobility Research and Technology
  • Standing member of the Transportation Research Board's New Users of Shared Airspace Committee
  • Former investor at Firelake Capital and Atlas Venture in transportation and sustainability technologies
  • MBA from University of Chicago Booth School of Business
  • Distinguished pilot with Private Pilot Certificate and Instrument Rating
  • Deeply embedded in the aerospace and aviation innovation community

Luka Tomljenovic, Partner

  • Former fighter pilot flying MiGs for the Croatian Air Force with nearly a decade of operational experience
  • Held positions as Weapons and Tactics Officer, spearheading air-to-air tactics innovation
  • Four-year background in finance, corporate development, and venture capital
  • Experience at automotive Tier-1 supplier in product line and operations roles
  • Former Partner at Airbus Ventures (early-stage VC fund backed by Airbus), where he led aerospace technology investments
  • Active speaker and thought leader; mentors startups and accelerators
  • Aeronautical engineering graduate from United States Air Force Academy (distinguished graduate, squadron commander, glider aerobatic team captain)
  • MBA from University of Notre Dame

Sector and Technology Focus

Primary Sectors:

  • Aerospace & Defense
  • Robotics & Automation
  • Advanced Mobility
  • Autonomous Systems

Technology Focus:

  • Software and AI systems for aerospace
  • Robotics and autonomous control
  • Advanced manufacturing and design tools
  • Computer vision and sensing systems
  • Edge computing and cybersecurity
  • Geospatial AI and data infrastructure
  • Physics-informed machine learning

Geographic Reach: United States (primary), Europe, Israel, Canada

Founder and Company Preferences

Radius Capital seeks founders building complex technical solutions for aerospace-adjacent problems. The ideal founder profile includes:

  • Deep aerospace domain expertise or relevant adjacent domain experience
  • Technical founding teams (engineers, scientists, operators)
  • Experience building or understanding complex cyber-physical systems
  • Ambition to tackle problems with real-world operational constraints and safety considerations
  • Understanding of aerospace regulatory and certification landscapes

The firm explicitly targets "dual-use defense and autonomy companies" - solutions that can serve both commercial aerospace and defense applications, reflecting the realistic market dynamics of aerospace technology.

Competitive Positioning and Thesis

Radius Capital is uniquely positioned within aerospace venture capital. While most aerospace VCs focus on aircraft, vehicles, or hardware platforms, Radius Capital's thesis is that the next generation of aerospace innovation will be driven by enabling technologies - software, AI, robotics, and manufacturing capabilities.

The firm's competitive advantages include:

  1. Domain Expertise: Both partners have deep, hands-on aerospace experience (Peter's policy involvement, Luka's fighter pilot background)
  2. Operational Support: Ability to provide strategic advisory services leveraging aerospace knowledge
  3. Network Access: Direct connections to NASA, National Academies, and aerospace industry leaders
  4. Thought Leadership: Host of The Vertical Space, the aerospace industry's leading innovation podcast
  5. Publishing: Publishes market research and strategic perspectives on aerospace technology trends
  6. Concentrated Approach: Deep engagement with a focused portfolio rather than broad-based investing

Fund Details

  • Founded: 2019
  • Fund Structure: Early-stage venture fund with concentrated portfolio strategy
  • Check Size: $100K-$1M (leading rounds)
  • Stage: Primarily Seed, occasional Pre-Seed
  • Geographic Focus: US (primary), Europe, Israel, Canada
  • Portfolio Size: 12+ active companies
  • Advisor Roles: NASA, National Academies of Science
  • Publications: Market assessment reports, Medium articles, Strategic research
  • Podcast: The Vertical Space (co-hosted with Celerity05)

Notable Differentiators

  1. Aerospace-First Philosophy: Explicit focus on aerospace as the primary market, not a secondary application area
  2. Dual-Use Defense Expertise: Comfortable with companies serving both commercial and defense markets
  3. Cyber-Physical Systems Focus: Emphasis on autonomous and reliable systems in real-world conditions
  4. Policy Influence: Direct involvement in national aerospace strategy and technology roadmapping
  5. Technical Credibility: Both partners bring operational and technical credibility from aerospace backgrounds
  6. Concentrated Portfolio: Deep engagement with each portfolio company rather than broad investment strategy
  7. Thought Leadership: Host of industry podcast and publisher of market research

Investment Strategy Summary

Radius Capital executes a concentrated, high-touch seed-stage investment strategy focused exclusively on aerospace-enabling technologies. The firm's competitive advantage derives from rare combinations of operational aerospace experience, policy influence, and technical expertise. They target founders building complex technical solutions for aerospace problems, with check sizes of $100K-$1M. The firm's network, published research, and podcast position Radius Capital as a thought leader in aerospace innovation, enabling them to attract high-quality deal flow and provide strategic guidance beyond capital. The explicitly aerospace-first approach means the firm is selective but deeply committed to companies solving real problems in a critical industry.

04Selected Portfolio
AgTech & Agriculture
Drone-Hand
Enterprise Software
Assaia·Danti·C-Infinity·Istari Digital·Worldscape·PhysicsX
Gaming
Orqa
Logistics & Supply Chain
Manna
Manufacturing & Industrial
Machina Labs
Robotics & Automation
T-Robotics·Swarmer·FluxWorks
Open the full portfolio→
05Recent Updates

Fresh signals from public announcements, essays, and portfolio activity.

See full activity (9) →
Worldscape raised a $10M Seed Round extension led by Scout Ventures, with participation from Radius Capital, to accelerate its AI-native Decision Advantage Platform for mission engineering, supporting defense and government organizations with agentic AI, simulation, and digital engineering.
MILESTONE·worldscape.ai
AUG 4, 2026
Participated in PhysicsX's $300M Series C at a $2.4B valuation, led by Temasek.
INVESTMENT·physicsx.ai
JUN 8, 2026
C-Infinity raised $16M in funding led by Canaan Partners, with participation from Inventus Capital Partners, Bee Partners, and Radius Capital, to accelerate its AI platform AutoAssembler that automates translation of digital designs into production-ready manufacturing plans.
MILESTONE·pulse2.com
APR 22, 2026
Portfolio company Swarmer completed IPO on Nasdaq (SWMR), raising $15M with 520% first-day surge.
EXIT·getswarmer.com+1
MAR 17, 2026
Worldscape.ai completed a $6M seed funding round led by Scout Ventures, with participation from Radius Capital and Washington Harbour Partners, to accelerate AI-native geospatial intelligence platform for defense and enterprise applications.
MILESTONE·worldscape.ai
MAR 3, 2026
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Quick Reference
Check Size
$100K – $1M
Stages
Seed · Pre-Seed · Series A
Decision
Partnership · ~1 Month
Warm Intro
Preferred
Involvement
Advisor
Location
San Francisco, California
Sector Focus
Aerospace & DefenseRobotics & AutomationDeveloper Tools & Infrastructure
Models
Aerospace SoftwareRoboticsAutonomous SystemsAdvanced Manufacturing
Technology
AI/MLAutonomous SystemsComputer VisionRobotics
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Focus Areas
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F4 Intelligence Report · Last Researched September 30, 2026F4 Research Engine