F4 Champions · Season 1
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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.
15 VC firms investing in climate & clean energy and aerospace & defense at the Growth stage.
F4 Fund tracks 15 VC firms that actively invest in climate & clean energy + aerospace & defense at the Growth stage, with check sizes ranging from $200K – $500M (median: $5.3M – $5.3M). As of July 2026, and 80% lead or co-lead rounds. Rankings are based on F4's proprietary analysis of 1,539+ researched VC firms, scored by data completeness, portfolio depth, investment recency, and stage alignment.
| # | Firm | Check Size | Portfolio | Leads? | Activity | Decision | Intro |
|---|---|---|---|---|---|---|---|
| 1 | ▶ 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 |
| 2 | ▶ 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 |
| 3 | ▶ Partners Resolute Invest in people and products that leverage technological breakthroughs or superior user experience to radically change the status quo. Focus on structurally sound, strategically defensible business models that create and capture new markets. True partnership approach: value-add extends beyond capital to include strategic guidance, operational expertise, and network introductions. | $250K – $8M | 57 | Leads | Active | ~2 wks | Open |
| 4 | ▶ 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 |
| 5 | ▶ Tesi Tesi (Finnish Industry Investment Ltd) is a state-owned investment company that helps Finland's most promising companies grow bigger. Tesi invests on market terms as a minority co-investor alongside private capital in Finnish startups, scale-ups, and industrial projects, as well as in VC and PE funds. Its mandate is both financial returns and economic impact — driving growth, jobs, and renewal in the Finnish economy. Helsinki | $1M – $30M | 31 | Follows | Active | 3+ mo | Open |
| 6 | ▶ 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 |
| 7 | ▶ 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 | N/A | Open |
| 8 | ▶ TCV Identify innovators capturing shifts in technology and behavior that reshape their industries, and empower mission-driven teams toward market-leading scale through a partnership-driven, long-term growth-equity approach. Menlo Park | $10M – $500M | 37 | Both | Active | N/A | N/A |
| 9 | ▶ Redalpine Redalpine backs companies at the convergence of software and science — where rigorous engineering meets scientific breakthroughs. Half the team are scientists, half are operators, enabling them to engage deeply with highly technical founders and support them hands-on from day one through to exit. Primary focus areas: frontier science and biotech, digital health, AI and automation, fintech, synthetic biology, and climate tech. Zug | $500K – $5M | 40 | Leads | Active | N/A | N/A |
| 10 | ▶ Riot Ventures Modernize critical industries through deep technology. We are dedicated to backing ambitious, technically sophisticated founders solving hard problems in traditionally underserved sectors. We provide capital, operational guidance, board partnership, and network access—supporting companies from pre-seed through growth stages. | $500K – $100M | 26 | Leads | Active | ~2 wks | Open |
| 11 | ▶ 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 |
| 12 | ▶ 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 |
| 13 | ▶ 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 |
| 14 | ▶ 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 |
| 15 | ▶ British Business Bank As the UK's state-owned economic development bank, British Business Bank exists to improve smaller and scaling businesses' access to finance and to support the transition to net zero, deploying public capital as a fund-of-funds, co-investor, and direct equity investor to fill gaps the private market leaves unfilled. Sheffield, UK | $12.5M – $50M | 7 | Both | Active | N/A | N/A |
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 15 VC firms that actively invest in climate & clean energy + aerospace & defense at the Growth 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 growth climate & clean energy + aerospace & defense investors is $5.3M – $5.3M, with a full range from $200K – $500M. The distribution breaks down as: 1 firms in the <$500K range, 1 firms in the $1M-$2M range, 4 firms in the $2M-$5M range, 2 firms in the $5M-$10M range, 7 firms in the $10M+ range.
Among the 15 firms tracked, 80% lead or co-lead rounds, and 20% 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 growth climate & clean energy + aerospace & defense investors combine domain expertise with an active portfolio in the space. Among these firms, 0% prefer warm introductions, and the average firm has 43 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.