41 VC firms investing in developer tools & infrastructure and aerospace & defense at the Series B stage.
F4 Fund tracks 41 VC firms that actively invest in developer tools & infrastructure + aerospace & defense at the Series B stage, with check sizes ranging from $100K – $500M (median: $13M – $13M). As of June 2026, and 85% lead or co-lead rounds. Rankings are based on F4's proprietary analysis of 1,358+ researched VC firms, scored by data completeness, portfolio depth, investment recency, and stage alignment.
| # | Firm | Check Size | Portfolio | Leads? | Activity | Decision | Intro |
|---|---|---|---|---|---|---|---|
| 1 | ▶ Red Swan Ventures Thematic-driven investor backing ambitious founders building for big outcomes across critical domains. Core conviction: defensible businesses create competitive advantages by transforming data challenges and market opportunities into sustainable value. We Go Deep, Not Wide. Focus on AI (defensible AI turns data challenges into advantages), Consumer (vision and strategy to break through attention economy), and Defense Tech (modern solutions for global stability). Active operational partnership beyond capital provision. | $250K – $100M | 65 | Leads | Active | ~2 wks | Open |
| 2 | ▶ 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 | 203 | Both | Active | ~2 wks | Req'd |
| 3 | ▶ Initialized Capital Passion and vision matter more than pedigree. We seek founders with grit, audacity, and a spark of rebellion—regardless of background. We invest early, before success is inevitable, and support founders from 0-to-1 through Series A. San Francisco | $250K – $2M | 185 | Leads | Active | ~2 wks | Open |
| 4 | ▶ Seraphim Capital Space has a unique role in addressing the world's most pressing problems and represents a $trillion investment opportunity. We back visionary entrepreneurs transforming science fiction into science fact using space technology and space-based data to solve challenges in sustainability, connectivity, and digitalization at global scale. London | $250K – $25M | 30 | Both | Active | ~2 mo | Open |
| 5 | ▶ Hiro Capital Europe can lead the next phase of human evolution enabled by technology. We invest in AI, Spatial Computing, Autonomy, Robotics, Longevity, Games, and Space/Defence. We are founders backing founder leaders with hands-on engagement. | $5M – $50M | 43 | Leads | Active | — | Req'd |
| 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 | ▶ 137 Ventures 137 Ventures provides structured liquidity — equity loans against shareholder stakes, direct secondary purchases, and anchoring company-organized tender offers — to the founders, executives, and early employees of category-defining private technology companies. The firm supports generational companies through decade-long private lifecycles with flexible, founder-friendly capital structures. San Francisco | $25M – $150M | 56 | Both | Active | — | — |
| 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 | ▶ Accel Partner with exceptional teams building transformative technology companies across all stages San Francisco | $2M – $10M | 127 | Both | Active | — | — |
| 10 | ▶ 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 |
| 11 | ▶ Air Street Capital We invest exclusively in AI-first companies where advances in artificial intelligence are the primary driver of product capability, competitive advantage, and long-term value creation. We are deeply coupled to the frontier of AI research and industry, enabling us to identify emerging technical inflection points and structural shifts early. London | $1M – $300M | 26 | Leads | Active | ~1 mo | Open |
| 12 | ▶ 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 | — | — |
| 13 | ▶ 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 |
| 14 | ▶ Intel Capital Scalable, defensible innovation at the intersection of software, hardware, and intelligence. Champion founders driving the next wave of technological innovation across Cloud, Devices, Frontier, and Silicon domains. Breakthrough technologies emerge from convergence of multiple domains. Santa Clara, California | $1M – $50M | 31 | Leads | Active | ~2 wks | Open |
| 15 | ▶ Level Ventures Level Ventures is the capital partner to outlier managers and entrepreneurs. The firm uses data-driven algorithms to identify top-quartile emerging VC managers (<$150M) and co-invests directly into their most promising portfolio companies. Core sectors: AI in life sciences, defense tech/aerospace, enterprise software, and developer infrastructure. New York | $500K – $10M | 11 | Follows | Active | ~1 mo | Open |
| 16 | ▶ 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 |
| 17 | ▶ UP Partners The next two decades will see dramatic changes in mobility across ground, air, sea, and space. We invest in entrepreneurs building frontier technologies that make movement cleaner, faster, safer, and lower-cost, leveraging our extensive relationships with global companies. Santa Monica | $1M – $10M | 31 | Both | Active | ~1 wk | Open |
| 18 | ▶ 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 |
| 19 | ▶ 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 | 21 | Leads | Active | ~2 mo | Open |
| 20 | ▶ 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 |
| 21 | ▶ Streamlined Ventures Visionary founders are the true catalysts of transformation and progress. We partner with exceptional founders at the seed stage to help them build extraordinary companies through intensive operational support, structured tools, and candid guidance. Palo Alto | $250K – $10M | 23 | Leads | Active | ~2 wks | Open |
| 22 | ▶ 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 |
| 23 | ▶ Blackbird Back wild hearts with the wildest ideas from the very beginning. Invest in companies, not rounds — following exceptional founders from pre-seed through all subsequent stages. Focused on ANZ founders building globally ambitious companies across any sector. Sydney | $150K – $60M | 43 | Leads | Active | ~2 wks | Open |
| 24 | ▶ SpeedInvest Backs globally ambitious technology companies from pre-seed and seed through selected growth rounds using specialist EMEA sector teams and a platform model for capital, customers, talent, follow-on investors, and operational support. Vienna | $250K – $30M | 49 | Leads | Active | — | Open |
| 25 | ▶ Khosla Ventures Technology-based economic disruption of large markets through black swan investments. We seek founders with domain expertise and unreasonable conviction to build billion-dollar companies solving the world's largest problems. Menlo Park | $500K – $50M | 38 | Both | Active | ~2 wks | Open |
| 26 | ▶ 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 |
| 27 | ▶ IVP We supercharge growth in breakout companies, converting momentum into market dominance. We invest exclusively at Series B and beyond in companies that have achieved product-market fit and are ready to scale from millions to hundreds of millions in revenue. San Francisco | $1M – $25M | 31 | Leads | Active | ~2 mo | Req'd |
| 28 | ▶ Lux Capital Turn sci-fi into sci-fact by backing founders solving the most vexing puzzles facing humanity. We believe in counter-conventional solutions and contrarian positions in deep technology. We champion companies working at the intersection of breakthrough science and transformational technology, led by visionary founders who are equal parts mad scientist and business mastermind. New York | $100K – $100M | 18 | Leads | Active | ~2 wks | Req'd |
| 29 | ▶ 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 |
| 30 | ▶ 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 |
| 31 | ▶ Liquid 2 Champions exceptional founders to build lasting companies through experience, community, and capital. Generalist technology investor whose edge is network depth — Joe Montana's unmatched rolodex and 800+ portfolio company network enables introductions that most seed funds cannot provide. San Francisco | $250K – $5M | 27 | Follows | Active | ~2 wks | Open |
| 32 | ▶ Trousdale Ventures We invest in mission-driven companies that dare to tackle impossible challenges, striving to transform industries and create lasting societal impact. We seek founders with audacity to dream big, resilience to persevere, and potential to build forever companies that shape human history. Los Angeles | $5M – $25M | 30 | Leads | Active | ~1 mo | Open |
| 33 | ▶ 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 |
| 34 | ▶ 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 | 21 | Leads | Active | ~1 wk | Req'd |
| 35 | ▶ 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 |
| 36 | ▶ Bessemer Venture Partners We partner with entrepreneurs from their early days through every stage of growth, focusing on innovative solutions in technology, healthcare, and financial services. Redwood City, California | $5.8M – $34.3M | 6 | — | 1mo | — | — |
| 37 | ▶ 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 |
| 38 | ▶ Evolution Venture Capital Partners Culture-Tech companies that disrupt and define how we live, work, play, and interact with the world every day. We invest in passionate founders building transformative products that change cultural behaviors. New York | $500K – $6M | 28 | Leads | Active | ~1 wk | Open |
| 39 | ▶ Gigafund Back the world's most ambitious and transformative entrepreneurs capable of building world-defining companies over 20+ years. Invest in founders with independent thought and first-principles vision to solve humanity's biggest problems across all sectors and geographies. Austin | $1M – $500M | 18 | Leads | Active | 3+ mo | Open |
| 40 | ▶ 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 |
| 41 | ▶ VU Venture Partners Invest in early-stage tech companies addressing world's largest market opportunities and solving humanity's biggest challenges. Leverage global distributed team to source, evaluate, and support transformational founders. San Francisco | $100K – $1M | 16 | Both | Active | ~2 mo | Open |
Investors on this page also frequently invest in these sectors
What other stages do these firms also invest in?
What other sectors do these firms also invest in?
F4 Fund tracks 41 VC firms that actively invest in developer tools & infrastructure + aerospace & defense at the Series B 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 series b developer tools & infrastructure + aerospace & defense investors is $13M – $13M, with a full range from $100K – $500M. The distribution breaks down as: 1 firms in the <$500K range, 1 firms in the $500K-$1M range, 2 firms in the $1M-$2M range, 6 firms in the $2M-$5M range, 8 firms in the $5M-$10M range, 23 firms in the $10M+ range.
Among the 41 firms tracked, 85% lead or co-lead rounds, and 12% 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 series b developer tools & infrastructure + aerospace & defense investors combine domain expertise with an active portfolio in the space. Among these firms, 22% prefer warm introductions, and the average firm has 42 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.