F4 Champions · Season 1
You're researching investors. We want to see what you're building.
Join the open accelerator where your standing changes with what you ship. Enrollment closes August 2.
F4 Champions · Season 1
You're researching investors. We want to see what you're building.
Join the open accelerator where your standing changes with what you ship. Enrollment closes August 2.
90 VC firms investing in security & cybersecurity and aerospace & defense at the Seed stage.
F4 Fund tracks 90 VC firms that actively invest in security & cybersecurity + aerospace & defense at the Seed stage, with check sizes ranging from $10K – $500M (median: $2.8M – $2.8M). As of July 2026, and 92% lead or co-lead rounds. Rankings are based on F4's proprietary analysis of 1,544+ researched VC firms, scored by data completeness, portfolio depth, investment recency, and stage alignment.
| # | Firm | Check Size | Portfolio | Leads? | Activity | Decision | Intro |
|---|---|---|---|---|---|---|---|
| 1 | ▶ SYN Ventures Cybersecurity needs constant innovation to stay ahead of adversaries. SYN invests in transformational (not incremental) solutions that significantly reduce technology risk — from the earliest stages through Series B — leveraging a team of former Fortune 500 CISOs, CEOs, and founders with 400+ combined years of security experience. West Palm Beach, FL | $1M – $30M | 40 | Leads | Active | N/A | N/A |
| 2 | ▶ Gula Tech Adventures Gula Tech Adventures invests in startups solving critical cybersecurity and national security problems, with a focus on founders who combine deep technical expertise, business acumen, and mission alignment. Rather than a traditional VC, Gula Tech operates as a self-funded, impact-focused family office enabling long-term patient capital. The firm evaluates opportunities equally on three dimensions: the problem being solved, deal fundamentals, and team quality. Ron and Cyndi's success building Tenable enables hands-on mentorship, technical due diligence, and access to government and critical infrastructure networks. Ellicott City, Maryland | $100K – $10M | 34 | Both | Active | ~2 wks | Req'd |
| 3 | ▶ Silent Ventures Exceptional founders building unrivaled aerospace, defense, and national security companies. Silent Ventures takes a contrarian bet on defense tech at the earliest stages — concept, pre-seed, and seed — when most institutional capital is unavailable. The firm believes the next generation of great defense companies will be built by mission-driven startup founders combining private-sector speed with national security urgency. Dallas | $1.5M – $3M | 34 | Leads | Active | ~1 mo | Open |
| 4 | ▶ Point72 Ventures Point72 Ventures backs ambitious founders building for big outcomes across critical domains. Going deep, not wide—the firm focuses on specialized investment theses in AI, Consumer, and Defense Tech, bringing deep sector insights, partnership, and hands-on support from seed to pre-IPO. New York | $250K – $50M | 204 | Both | Active | ~2 wks | Req'd |
| 5 | ▶ First In Security technology is a necessity independent of economic cycles. We back technical experts who have seen over the horizon as security practitioners across commercial, military, or intelligence sectors. We invest in entrepreneurs who are on a mission to secure our freedom. Washington | $500K – $5M | 33 | Leads | Active | ~2 mo | Open |
| 6 | ▶ Elad Gil Invest in market-creating companies with exceptional founders and large addressable markets. Prioritize market size and dynamics, then evaluate product-market fit through personal usage test. Focus on founder quality and execution capability over other factors. San Francisco | $250K – $50M | 39 | Leads | Active | ~2 wks | Open |
| 7 | ▶ Ubiquity Ventures Ubiquity Ventures invests in 'software beyond the screen' — B2B technology companies that apply AI and software to physical problems and systems. The three pillars are Smart Hardware (devices that sense and change the physical world), Machine Learning (AI for industries historically less penetrated by software), and Platforms (developer tools, security, and perception technologies for non-traditional computing). Check size: $1-2M seed, equal follow-on reserves for Series A. San Francisco | $100K – $2M | 36 | Leads | Active | ~1 wk | Open |
| 8 | ▶ Lightspeed Venture Partners We partner with bold builders of category-defining companies from Seed to Series F and beyond. Depth of commitment, depth of relationships, and depth of belief distinguish us. Complete immersion, authentic partnership, and unwavering conviction through market cycles. | $1M – $300M | 51 | Leads | Active | ~2 wks | Open |
| 9 | ▶ Next Frontier Capital Exceptional talent and innovation exist beyond coastal venture capital hubs. We partner with mission-driven entrepreneurs to build companies of impact, utility, and value in the Rocky Mountain region. Technical founders with regional commitment and proven execution ability are our ideal partners. Bozeman | $2M – $5M | 49 | Leads | Active | ~1 mo | Open |
| 10 | ▶ Scout Ventures Scout invests in frontier technologies built by founders from military, intelligence, and national research labs. The team provides capital, operational partnership, government network access, and non-dilutive capital leverage. Focus on dual-use technologies with both commercial and defense applications. Austin | $500K – $5M | 32 | Leads | Active | ~2 wks | Open |
| 11 | ▶ GreatPoint Ventures Make no little plans. Support revolutionary (not evolutionary) ideas that transform industries and benefit society. We partner with entrepreneurs solving massively multi-disciplinary problems at the intersection of AI, data, biotech, and deep tech. Our style of in-the-trenches venture capital doesn't scale—we make fewer than 10 investments per year so we have time to roll up our sleeves with every team we back. San Francisco | $250K – $20M | 67 | Leads | Active | ~2 wks | Open |
| 12 | ▶ Accel Partner with exceptional teams building transformative technology companies across all stages San Francisco | $2M – $10M | 127 | Both | Active | N/A | N/A |
| 13 | ▶ Paladin Capital Group Back dual-use technologies serving both commercial and government markets. Founded as investment community response to 9/11, we bring unmatched expertise from NSA, CIA, DARPA. We seek founders building innovative cyber, AI safety, and advanced technologies with meaningful impact on national security and commercial markets. Washington | $500K – $15M | 29 | Leads | Active | ~2 wks | Open |
| 14 | ▶ Tribe Capital Apply AI and data science to identify and invest in N-of-1 companies with 10-100x potential. Back founders who expand individual freedom and decentralize power. Invest in companies that embody principles from the Bill of Rights (voice, fair process, proportionality, user power) and Bitcoin whitepaper (trust-minimized, verifiable, aligned incentives, open access). Menlo Park | $500K – $5M | 60 | Leads | Active | ~1 wk | Open |
| 15 | ▶ Geodesic Capital We invest in multi-stage, globally minded founders and help them succeed in the critical Japanese market. Geodesic bridges Silicon Valley and Japan, providing both financial capital and an unmatched operational platform — including the annual Geodesic Forum, a dedicated Japan team, and deep LP relationships with major Japanese corporations — to accelerate portfolio company growth into Japan and Asia. Silicon Valley | $5M – $50M | 75 | Both | Active | N/A | N/A |
| 16 | ▶ General Catalyst We back founders venturing beyond to build transformational companies that create positive, enduring change. Applied AI and global resilience are fundamental forces reshaping industries. | $2M – $50M | 38 | Leads | Active | N/A | N/A |
| 17 | ▶ J2 Ventures J2 Ventures invests in early-stage companies developing technologies that advance both U.S. national security and commercial markets. The firm backs founders whose innovations strengthen national security while improving safety, health, and connectivity for everyday life. J2-backed companies receive capital plus deep expertise across government, defense, science, healthcare, and finance — and on average raise $2 in non-dilutive funding for every $1 J2 invests. Boston | $1M – $10M | 37 | Leads | Active | ~1 mo | Open |
| 18 | ▶ Centre Street Partners Partner with technical operators and SMB owners to execute technology-led middle-market buyouts. Capture outsized economic value from AI at the ownership layer of services providers rather than pure-play tech. New York | $5M – $50M | 24 | Leads | Active | ~1 mo | Req'd |
| 19 | ▶ Massive Investing in inevitable deep tech. Back visionary founders building transformational companies in domains where technological disruption is predetermined, not probable. Focus on early scale inflection points where companies move from potential to proven commercial viability. Golden, CO | $500K – $3M | 24 | Both | Active | ~2 wks | Open |
| 20 | ▶ Moonshots Capital Back extraordinary leadership teams—founders exceptional at building and exiting businesses with leadership styles that military-trained partners can uniquely mentor, support, and supercharge. Particular conviction in military veteran founders (30%+ of AUM) who demonstrate proven track record, drive, mission-orientation, teamwork, strategic excellence, growth mindset, and integrity. Austin | $1M – $10M | 36 | Leads | Active | ~2 wks | Open |
| 21 | ▶ Ground Up Ventures We're a different type of venture firm. We wake up every morning and ask ourselves how we can help our portfolio companies move the needle. From in-the-weeds to twenty thousand feet, we are partners at every level. We serve as an extension of founder headcount, sitting in portfolio company Slack channels, maintaining weekly calls, and proactively helping with hiring and customer introductions. New York | $250K – $1.5M | 49 | Follows | Active | ~2 wks | Req'd |
| 22 | ▶ Iron Wolf Capital Iron Wolf Capital backs exceptional technical founders building globally relevant deep tech and defence companies from the Baltic Sea Region and diaspora. The firm treats regional technical depth, capital efficiency, and category-specific expertise as the core source of advantage. Vilnius, Lithuania | $500K – $5M | 22 | Leads | Active | ~2 wks | Req'd |
| 23 | ▶ Harpoon Ventures Technology will define geopolitics. We invest in the Freedom Stack—foundational technologies critical to American national security and technological leadership. We partner with mission-driven founders building capabilities essential to American prosperity and strategic advantage. San Diego | $500K – $5M | 46 | Leads | Active | ~2 wks | Req'd |
| 24 | ▶ Script Capital Pre-seed fund investing in technical founders building developer-facing tools and infrastructure. Focused on curiosity, velocity of learning, and rapid building. Believe the world is shaped by unique insights at the intersection of art/culture and math/science. San Francisco | $250K – $750K | 74 | Leads | Active | ~1 wk | Open |
| 25 | ▶ 11.2 Capital We invest in technically sophisticated founding teams solving breakthrough problems in deep-tech. We believe the next generation of transformational companies will be built by scientists and engineers with deep domain expertise tackling problems at the frontier of AI, cybersecurity, quantum, robotics, space, synthetic biology, and bioengineering. We provide patient capital and technical partnership to help these teams achieve escape velocity. San Francisco | $500K – $3M | 21 | Leads | Active | ~2 wks | Open |
| 26 | ▶ Lockheed Martin Ventures Invest in companies developing disruptive technologies in core defense business areas to build a pipeline that strengthens the defense industrial base. Over 60 portfolio companies have become Lockheed Martin suppliers, receiving $750M+ in contracts. Bethesda, MD | $500K – $5M | 32 | Both | Active | 3+ mo | Req'd |
| 27 | ▶ BlueYard Capital Invest in only two kinds of technologies: those that move humanity toward utopia, and those that hold the line against oblivion. Back n-of-1 visions for an era of Black Swans—unconventional companies solving civilization-scale problems that others dismiss as too early, too risky, or too misunderstood. Berlin | $500K – $5M | 58 | Leads | Active | ~2 mo | Open |
| 28 | ▶ Spacecadet Ventures Founders building the possibly impossible deserve capital plus marketing support. Great technology combined with exceptional storytelling and narrative development creates world-changing moonshots. We provide both the capital and the story-telling expertise to help founders achieve escape velocity. New York | $250K – $1M | 99 | Leads | Active | ~2 wks | Open |
| 29 | ▶ MANTIS Venture Capital Mantis invests opportunistically in Seed and Series A technology-enabled startups, leveraging deep social capital across tech, media, entertainment, and finance to provide unmatched GTM support. The firm is founder-obsessed and differentiates through celebrity network access, customer introductions, talent acquisition help, and brand amplification. Santa Monica | $500K – $3M | 113 | Both | Active | ~2 wks | Open |
| 30 | ▶ Entrepreneur First It matters not only which companies get started, but who starts them. EF identifies exceptional individual talent before a company, co-founder, or idea exists, and builds the company from Day Zero through cohort-based co-founder matching, an equity-free grant phase, and up to $250K in formation capital (via SAFE) once a team passes its Investment Committee. London | $250K – $5M | 78 | Leads | Active | N/A | Open |
| 31 | ▶ Ravelin Investing in founders building critical software that addresses the decay of Western infrastructure, institutions, and industrial base. Ravelin backs software-defined transformation of aerospace, defense, manufacturing, energy, and industrial sectors. San Francisco | $100K – $500K | 18 | Follows | Active | ~2 wks | Open |
| 32 | ▶ NATO Innovation Fund NIF invests in cutting-edge science and engineering startups that strengthen the defence, security, and resilience of NATO Allied nations. Backed by 24 sovereign governments, NIF provides deep tech founders with unprecedented access to government procurement markets across 24 countries, connectivity to ~90 NATO-affiliated test centres, and 6,000+ Allied scientists. NIF leads initial investments with up to €15M and maintains substantial follow-on reserves. Amsterdam | $1M – $16.5M | 26 | Leads | Active | 3+ mo | Open |
| 33 | ▶ Mark VC Mark VC takes a deeply founder-centric approach, building '360-degree behavioral maps' of founders through extensive personal reference calls. They invest across industries but focus on security & defense, healthcare, consumer, and enterprise software. They strive to be the most valuable investor on the cap table through hands-on coaching and operational support. Austin | $500K – $5M | 25 | Both | Active | ~2 mo | Req'd |
| 34 | ▶ 9Yards Capital Back technical founders building critical infrastructure for foundational industries. Pair growth-stage capital with deep regulatory expertise and government/industry connectivity to create defensible advantages in overlooked, essential sectors. San Francisco | $3M – $10M | 34 | Both | Active | ~2 wks | Open |
| 35 | ▶ XYZ Venture Capital Great companies aren't born, they're made. XYZ invests in early-stage founders with exceptional execution capability, deep domain expertise, or lived experience insights. They specialize in helping founders navigate the earliest stages by providing capital plus strategic operational support. San Francisco | $10K – $5M | 34 | Leads | Active | ~2 wks | Req'd |
| 36 | ▶ 8-Bit Capital Network-powered startups connecting people and businesses through software tools and platforms | $250K – $3M | 55 | Both | Active | N/A | N/A |
| 37 | ▶ Costanoa Ventures Building transformational companies requires more than capital—it demands deep operational expertise, consistent partnership, and genuine commitment to founders' success. Costanoa backs visionaries solving big, hard problems across data infrastructure, applied AI, cybersecurity, fintech, and national security. The firm centers on the 'missing middle' of early-stage investing: providing unusually intensive, hands-on support to founder teams during their most critical growth phases. Palo Alto | $2M – $10M | 33 | Leads | Active | ~1 wk | Open |
| 38 | ▶ ATX Venture Partners Seeking early-stage alpha through institutional discipline. ATX VP invests in people pioneering the future by combining Wall Street rigor with deep operating experience. Core focus on disruptive B2B software, APIs, frontier tech, and marketplaces across Supply Chain, FinTech, InsurTech, HR Tech, Aerospace, and Future of Work. Austin | $250K – $5M | 42 | Leads | Active | N/A | Open |
| 39 | ▶ Vanedge Capital Deep technology and hard tech company investing at inflection points. Partner with technical founders building infrastructure-level solutions for global scale. Founded 2010 on belief that next generation of transformative companies require deep technical expertise, not just capital. Vancouver | $1M – $15M | 42 | Both | Active | ~2 wks | Open |
| 40 | ▶ Shasta Ventures Exceptional founders with clear technical solutions to enterprise market pain points, focused on SaaS, cybersecurity, infrastructure, data intelligence, and computer vision. We provide capital plus operational excellence through Shasta Elevate playbooks. Menlo Park | $2M – $15M | 23 | Leads | Active | ~2 mo | Open |
| 41 | ▶ Alumni Ventures We democratize venture capital by providing individual accredited investors with professional-grade access to elite venture opportunities. We leverage our massive 850,000+ community network and 11,000+ investors to create unique value for founders, sourcing and diligencing deals alongside top-tier VCs (a16z, Sequoia, Khosla) without leading rounds. Our network is our competitive advantage—it compounds value for all stakeholders. Manchester, NH | $250K – $5M | 58 | Follows | Active | ~2 wks | Open |
| 42 | ▶ Pebblebed We back the foundational layers of progress. Developer platforms that accelerate creation. Robot operating systems that make autonomy real. Simulation engines training the next generation of AI. Formal verification securing billions in value. Foundational systems that quietly compound—built by founders who see elegance in complexity and possibility in constraints. San Francisco | $2M – $5M | 38 | Leads | Active | ~2 wks | Req'd |
| 43 | ▶ Angular Ventures Backs inception-stage technical founders across Europe and Israel building solutions for hard markets including AI infrastructure, space/aerospace, advanced manufacturing, energy, biology, and other deep-tech verticals. London | $500K – $5M | 46 | Leads | Active | ~2 wks | Open |
| 44 | ▶ Manta Ray Back mission-driven founders addressing significant global challenges through leading-edge technology. Provide flexible and patient capital, leveraging our time, resources, and networks to support portfolio company success. Focus on founders with authentic social and environmental missions alongside commercial viability. London | $250K – $3M | 55 | Both | Active | ~1 mo | Open |
| 45 | ▶ K5 Global K5 Global backs category-defining companies from inception to IPO. The firm leverages exceptional networks across media, entertainment, politics, finance, and technology to provide strategic value beyond capital. We believe the best companies are built by founders who can access world-class talent, capital, and strategic relationships. Los Angeles | $1M – $3M | 34 | Leads | Active | ~1 mo | Open |
| 46 | ▶ Valor Ventures The South is emerging as a center of gravity for venture capital, not a satellite region. We back B2B AI and SaaS founders solving real problems with clear ROI, creating a Community of Courage where capital aligns with conviction. Atlanta | $500K – $3M | 26 | Leads | Active | ~1 wk | Open |
| 47 | ▶ Plug N Play Ventures Connect innovative startups to 550+ corporate partners who have real business problems to solve. Our platform creates a flywheel of pilots, enterprise customers, and follow-on capital for founders who value long-term partnership and have credible paths to $100M+ ARR. Sunnyvale | $25K – $3M | 51 | Both | Active | ~1 wk | Open |
| 48 | ▶ Pax Ventures Pax Technica: The next era of American global leadership will emerge from physical-world technological superiority — reinventing defense, energy, manufacturing, aerospace, and critical infrastructure. Backs mission-driven founders tackling the hardest industrial-scale problems. Menlo Park | $1M – $4M | 18 | Leads | Active | ~2 wks | Open |
| 49 | ▶ Shizen Capital Digital transformation of the enterprise in Japan. Backs ambitious startups with a tech component aiming to scale both domestically and internationally. Fund VII focuses on AI/deep tech, energy transition, inbound tourism, and defense. Founded by recovering entrepreneurs who believe operator experience makes better investors. Tokyo | $500K – $5M | 18 | Leads | Active | ~1 mo | Open |
| 50 | ▶ Inertia Ventures Inertia invests in AI-native companies built to become core infrastructure for legacy industries, especially platforms operating in regulated, context-heavy, and physical-world workflows where durable data, compliance, audit trails, or embodied operations create compounding advantages. New York | $2M – $15M | 66 | Leads | Active | ~2 wks | Req'd |
| 51 | ▶ Defy VC Back exceptional entrepreneurs building enduring companies that defy expectations. Value authenticity and tenacity to turn daring ideas into lasting impact. One life-altering investment can lead to industry-wide transformation. San Mateo, California | $100K – $10M | 38 | Leads | Active | ~1 wk | Req'd |
| 52 | ▶ In-Q-Tel (IQT) Transformative national security solutions emerge from early-stage private-sector startups developing frontier technologies. IQT identifies, evaluates, and leverages innovations to accelerate government adoption while enhancing commercial success. As of May 2026, IQT is emphasizing mission investing through fewer larger bets in autonomy, contested logistics, critical infrastructure, and technologies that can move to mission use quickly. Washington | $250K – $3M | 30 | Leads | Active | ~1 mo | Open |
| 53 | ▶ FoundersX Ventures AI-first venture capital firm investing in AI transformation and digital infrastructure across GenAI Infrastructure (AI chips, quantum, autonomous robotics), Deep Domains (fintech, healthcare, enterprise), and GenAI Agents (autonomous AI for real-world consumer and enterprise use). Menlo Park | $500K – $3M | 36 | Leads | Active | ~1 mo | Req'd |
| 54 | ▶ Black Flag Be the first check in for founders building America's next era of critical technologies. Invest in audacious founders across Defense, Aerospace, Energy, AI, Manufacturing, Cybersecurity, and Health+Bio solving problems critical to national security and American technological leadership. Provide capital ($250K-$1M), unmatched government access, mentor network, and go-to-market acceleration. San Diego | $250K – $1M | 21 | Leads | Active | ~1 mo | Open |
| 55 | ▶ Human Capital Partner with exceptional founders to build generational companies that define the world's most critical industries. We provide not just capital but assemble teams of the highest caliber through our 5,000+ member builder community and deep operational expertise. San Francisco | $250K – $200M | 25 | Both | Active | ~1 wk | Open |
| 56 | ▶ Boost VC Back the quirky underdog pursuing seemingly impossible ideas. Frontier tech (aerospace, biotech, climate, robotics, crypto, AI, VR/AR) will create the next generation of legendary companies. Technical founders with deep domain expertise can solve the hardest problems in physics, chemistry, and computing. San Mateo, California | $500K – $3M | 30 | Leads | Active | ~1 wk | Open |
| 57 | ▶ Swisscom Ventures Invest in digital technologies that disrupt specific verticals, targeting exceptional founding teams with category-leader potential. Focus on Swiss university spin-offs and companies leveraging Telco, DeepTech, Cybersecurity, Fintech, and AI. Provide not just capital but access to Swisscom's enterprise infrastructure and customer channels. Zurich | $1M – $20M | 30 | Both | Active | ~1 mo | N/A |
| 58 | ▶ Felicis Ventures Back founders building iconic companies that transcend boundaries. We invest directly in their growth to make them unbreakable. Founded on principle that luck isn't made, it's engineered. Founders are our customer, not LPs. We always vote shares with founders and provide 1% non-dilutive founder development capital alongside every first check. Menlo Park | $500K – $15M | 29 | Both | Active | ~1 wk | Open |
| 59 | ▶ Icehouse Ventures Back exceptional Kiwi founders building globally transformative companies, from day one to IPO. New Zealand founders represent a significantly undervalued asset class, and Icehouse provides capital plus an ecosystem of 3,000+ investors and deep operational support. Auckland | $100K – $10M | 41 | Leads | Active | ~2 mo | Open |
| 60 | ▶ Battery Ventures Battery Ventures operates as a stage-agnostic firm backing technology-driven category leaders across all growth stages from seed to buyout. The firm believes the best tech investments span the entire founder journey, and they practice collaborative, research-focused investing with embedded operational support through their Portfolio Services platform. They seek technical founders with deep domain expertise and experienced operators building in four core sectors: Application Software, Infrastructure Software, Consumer, and Industrial Tech + Life Science Tools. Boston | $1M – $500M | 23 | Both | Active | ~2 wks | Open |
| 61 | ▶ Jovono We invest in paradigm shifters—truly disruptive technologies that change our perspective of the world. We believe in missionary founders committed to their vision, and we focus on business-team-idea-timing fit, not just product-market fit. We target transformative companies across defense, climate, fintech, legal tech, and emerging domains. Los Angeles | $1M – $25M | 23 | Leads | Active | ~1 mo | Req'd |
| 62 | ▶ Impact Venture Capital Corporate-advantage seed investing. We identify promising AI and deep tech startups early, then leverage our hundreds of relationships with corporate venture capital arms to de-risk investments, accelerate time to exit, and create curated dealflow where both founders and corporates benefit from strategic alignment. El Dorado Hills, CA | $250K – $1M | 22 | Leads | Active | ~2 wks | Req'd |
| 63 | ▶ Decisive Point Amplify founder impact through capital paired with deep expertise in government market access, federal R&D funding capture, and government contracting strategy. Focus on dual-use technologies addressing national security, defense, energy, and infrastructure challenges. Beacon, NY | $500K – $10M | 21 | Leads | Active | ~2 mo | Req'd |
| 64 | ▶ Eniac Ventures Partner with exceptional founders building from 0 to 1, with focus on AI applications, developer tools, SaaS, and healthcare. Believe in founders who have succeeded once or have deep domain expertise. | $500K – $5M | 26 | Leads | Active | ~2 wks | Open |
| 65 | ▶ Syndicate One Belgium-first network-driven VC backing the most ambitious Belgian-founded tech startups at Pre-Seed and Seed. Pools capital, expertise, and network from 120+ founders, operators, and investors to help early-stage Belgian companies scale globally. Brussels, Belgium | $250K – $1.5M | 25 | Leads | Active | ~1 mo | Open |
| 66 | ▶ HOF Capital HOF Capital invests in relentlessly ambitious founders building world-changing technologies that accelerate abundance: sustained technological progress that expands access to opportunity, health, and economic prosperity. Its current public thesis emphasizes AI and agentic systems as amplifiers of discovery, engineering, and knowledge creation, alongside frontier infrastructure and applications that can shorten scientific and technological invention timelines. New York | $500K – $10M | 29 | Both | Active | ~2 wks | Req'd |
| 67 | ▶ Lightbank Lightbank invests in disruptive technology companies led by great founders in dynamic markets with world-class products. The firm believes exceptional founders and opportunities exist everywhere, especially in overlooked geographies like the Midwest. We partner with early-stage founders and provide operator-heavy support beyond capital. Chicago | $500K – $5M | 24 | Leads | Active | ~2 wks | Open |
| 68 | ▶ OVNI Capital Back European technical founders building globally ambitious deeptech and critical technology companies at pre-seed and seed, with concentrated first-check conviction and Paris/San Francisco/Berlin support. Paris | $250K – $2M | 18 | Both | Active | N/A | Open |
| 69 | ▶ Amadeus Capital Partners Backs trailblazers solving hard problems in large markets through deep technology investments across Intelligence (AI, computing, quantum), Human (health, medicine, wellness), and Planet (sustainability, energy, space). London | $1.3M – $12.7M | 22 | Both | Active | N/A | N/A |
| 70 | ▶ Commonweal Ventures Entrepreneurs who work constructively with government to harness its unique strengths—scale, credibility, regulatory power, data, and funding—enjoy asymmetric advantages. 24% of venture-backed unicorns used government support. We partner with founders to unlock government as a growth lever. New York | $500K – $2M | 26 | Both | Active | ~1 mo | Req'd |
| 71 | ▶ Sand Hill Angels Sand Hill Angels backs seed-stage, high-tech companies with large and growing markets, well-defined problems, disruptive solutions, defensible technology, and strong teams with demonstrated ability to execute. The group leverages 145+ experienced angels to provide capital, mentorship, and network access across the Silicon Valley ecosystem. Mountain View | $50K – $2M | 30 | Follows | Active | N/A | Open |
| 72 | ▶ Kima Ventures Back ambitious teams with strong learning and execution capacities across all sectors, stages, and geographies. Technology-enabled businesses preferred. Volume-based, founder-centric investment philosophy. Paris | $100K – $200K | 25 | Leads | Active | ~2 wks | Open |
| 73 | ▶ Rosecliff Ventures Rosecliff's Frontier Technology Thesis focuses on AI, aerospace, defense, energy resilience, and space infrastructure. New York | $500K – $10M | 23 | Both | Active | ~2 mo | Open |
| 74 | ▶ Vibe Capital Investing in the picks and shovels of volatility caused by convergent forces (AI, Web3, Deep Science) intersecting with demographic shifts and climate change. We seek to create venture-scale returns by backing bold founders building more equitable, beneficial, transparent, and accessible structures. New York | $250K – $500K | 26 | Both | Active | ~2 mo | Open |
| 75 | ▶ CDP Venture Capital CDP Venture Capital is a national venture platform that combines direct investing, fund-of-funds activity, accelerators, and technology transfer to strengthen Italy's innovation economy in strategic sectors. Rome | $250K – $10M | 14 | Both | Active | N/A | N/A |
| 76 | ▶ Main Sequence Main Sequence backs deep tech founders solving humanity-scale problems, especially companies connected to publicly funded research and spinouts that can turn breakthrough science into global businesses. Eveleigh, NSW, Australia | $250K – $500K | 14 | Leads | Active | ~1 mo | N/A |
| 77 | ▶ NFX Network effects are the #1 way to create defensibility in digital businesses. We invest in visionary founders building defensible businesses with network effects embedded in their core product. San Francisco | $1M – $5M | 28 | Leads | Active | N/A | N/A |
| 78 | ▶ Hard2beat We invest in early-stage Polish deep tech startups with a clear technological edge—solving hard problems through software-driven or hardware-enabled solutions. Defensible technology, early validation, and resilient founders are non-negotiables. A deeptech project without real customers becomes a research project. Wrocław, Poland | $100K – $750K | 7 | Both | Active | ~1 wk | Open |
| 79 | ▶ Space.VC Exceptional entrepreneurs building critical national security, space, and industrial infrastructure at day zero deserve capital and strategic support from founders who've scaled before. We provide capital, industry network introductions, capital connections to Series A leads, and ecosystem access. Austin | $100K – $1M | 10 | Leads | Active | ~1 wk | Req'd |
| 80 | ▶ Crossbeam Venture Partners We are a stage-agnostic venture capital firm investing in exceptional founders building the companies that shape our world. New York | $500K – $3M | 20 | Both | Active | ~2 wks | Open |
| 81 | ▶ Tiger Global Management Leading global companies that leverage technological innovation across public and private markets. Proven founders (especially ex-Googlers, AWS, Stripe) with large TAMs (billions+), product-led growth, and global ambitions. Conviction-based investing post-2022 correction emphasizing quality over quantity. New York | $1M – $100M | 23 | Leads | Active | ~1 wk | Req'd |
| 82 | ▶ Deep33 Backs frontier deep tech companies solving physical infrastructure bottlenecks of the AI supercycle, especially compute, energy, quantum, AI infrastructure, robotics, and autonomous manufacturing across the U.S.-Israel corridor. New York | $5M – $15M | 9 | Both | Active | ~1 mo | Open |
| 83 | ▶ Gaingels Equity of access and representation in venture capital delivers positive returns. Diverse and underrepresented (including LGBTQ+) leaders of high-growth companies deserve capital access. When these founders succeed, they influence ecosystems and open doors for historically excluded groups. New York | $200K – $500K | 29 | Follows | Active | ~2 wks | Open |
| 84 | ▶ Stout Street Capital Great startups can be built anywhere. We believe in founder-centric investing with operational support from a team of successful founders. We serve undernetworked geographic regions. Denver | $100K – $500K | 26 | Both | Active | ~2 wks | Open |
| 85 | ▶ Athenian Capital AI, autonomy, and cybersecurity will define both economic prosperity and national security. We invest in early-stage founders leveraging unfair advantages to build category-leading dual-use technology startups that serve both commercial and defense markets. Cambridge | $500K – $1M | 1 | Leads | Active | ~2 wks | Open |
| 86 | ▶ Strider Capital The next generation of transformative technologies will emerge from entrepreneurs building solutions for national defense, security, and critical infrastructure protection. We invest at the intersection of technology and geopolitical imperatives. Washington | $250K – $2M | 1 | Leads | Active | 3+ mo | Req'd |
| 87 | ▶ Striker Venture Partners Concentrated day-zero partnerships with ambitious technical founders building generational AI, cybersecurity, infrastructure software, and adjacent technical companies from inception. San Francisco | $5M – $30M | 1 | Leads | Active | N/A | N/A |
| 88 | ▶ Flucas Ventures Democratize access to venture capital by building large syndicates of non-traditional LPs. Invest across all stages, sectors, and geographies based on founder quality and market conviction, not category restrictions. Enable 2,000+ diverse co-investors to participate alongside marquee firms like Sequoia and Andreessen Horowitz while maintaining founder-friendly economics. Miami | $250K – $5M | 17 | Follows | Active | ~1 wk | Req'd |
| 89 | ▶ Levante Capital Invest in the most promising Southern European (primarily Italian) deep-technology companies across Advanced Manufacturing, Life Science, and Energy & Environment, and actively support their expansion into Asian markets (China, South Korea, Japan, South-East Asia). The fund uses a proprietary evaluation framework and a 'pull model' — companies must demonstrate genuine Asian market interest before investment. Milan, Italy | $500K – $3M | 8 | N/A | Active | ~2 mo | Open |
| 90 | ▶ TheoryForge Operator-led fund investing in ambitious founders building transformative AI applications. We partner with technical founders who understand AI/ML deeply and are solving real customer problems with capital efficiency. Great product is always the best marketing. | $200K – $500K | 38 | Both | Active | ~2 wks | Req'd |
Investors on this page also frequently invest in these sectors
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What other sectors do these firms also invest in?
Firms that frequently co-invest with investors on this page
F4 Fund tracks 90 VC firms that actively invest in security & cybersecurity + aerospace & defense at the Seed stage. These firms are ranked using a composite score that weighs data completeness (30%), portfolio depth (30%), investment recency (25%), and stage alignment (15%).
Based on F4's analysis, the median check size for seed security & cybersecurity + aerospace & defense investors is $2.8M – $2.8M, with a full range from $10K – $500M. The distribution breaks down as: 8 firms in the <$500K range, 8 firms in the $500K-$1M range, 17 firms in the $1M-$2M range, 23 firms in the $2M-$5M range, 19 firms in the $5M-$10M range, 15 firms in the $10M+ range.
Among the 90 firms tracked, 92% lead or co-lead rounds, and 7% typically follow. Founders seeking a lead investor should filter for firms marked "Leads" or "Both" in the rankings table above. Lead investors typically set deal terms and anchor the round.
The best seed security & cybersecurity + aerospace & defense investors combine domain expertise with an active portfolio in the space. Among these firms, 29% prefer warm introductions, and the average firm has 37 portfolio companies. Look for firms whose check size matches your raise, whose stage preference aligns with yours, and who have a track record of supporting companies in your sector through multiple growth phases.
Firm profiles are continuously updated through F4's research pipeline, which combines LLM-powered web research, portfolio analysis, and transcript extraction. The ranking data refreshes every 12 hours. Editorial analysis is reviewed weekly. Individual firm profiles are re-researched on a 30-day cycle or when new information surfaces.