27 VC firms investing in security & cybersecurity and climate & clean energy at the Growth stage.
F4 Fund tracks 27 VC firms that actively invest in security & cybersecurity + climate & clean energy at the Growth stage, with check sizes ranging from $100K – $500M (median: $20.5M – $20.5M). As of August 2026, and 89% lead or co-lead rounds. Rankings are based on F4's proprietary analysis of 1,728+ researched VC firms, scored by data completeness, portfolio depth, investment recency, and stage alignment.
| # | Firm | Check Size | Portfolio | Leads? | Activity | Decision | Intro |
|---|---|---|---|---|---|---|---|
| 1 | ▶ Energy Impact Partners Technology and capital solutions for the global energy transition. We partner with entrepreneurs to build and scale innovative companies that power a better energy future, supported by collaborations with utilities and industrial incumbents. New York | $2M – $20M | 26 | Leads | Active | ~1 mo | Req'd |
| 2 | ▶ Salesforce Ventures Enterprise technology is the sole focus. Patient capital with an evergreen model — Salesforce is the sole LP with no fund lifecycle pressure, enabling investing across market cycles. AI is the defining platform shift of our era: from model infrastructure to AI applications to robotics and agents. Strategic value beyond capital: unmatched access to the Salesforce enterprise ecosystem and Fortune 500 network for customer introductions, early product feedback, and go-to-market acceleration. San Francisco | $1M – $50M | 66 | Both | Active | ~1 mo | Open |
| 3 | ▶ 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 | 67 | Both | Active | N/A | N/A |
| 4 | ▶ Northzone Category-defining entrepreneurs building fundamental shifts that upend entire industries. Focus on disruptive business models in energy transition, healthcare, AI, and consumer. Thesis values human relationships and founder-centric partnerships over financial metrics alone. London | $1M – $40M | 39 | Leads | Active | ~2 wks | Req'd |
| 5 | ▶ Koch Disruptive Technologies KDT backs principled entrepreneurs building disruptive technologies across connectivity, cybersecurity, healthcare, enterprise software, semiconductors, supply chain/manufacturing, energy, and fintech. KDT differentiates through Koch Labs® — connecting portfolio companies to Koch Industries' global commercial ecosystem and subject matter experts — enabling faster commercial deployment and scaling than traditional VC. Wichita, KS | $5M – $150M | 67 | Leads | Active | ~2 mo | Open |
| 6 | ▶ AirTree Ventures Big things start small. We invest at seed stage and see potential where others don't. We believe in your vision for your company's future, not as it exists today. We think in decades, not days, committing to walk the entire journey with founders to build iconic companies. We share Antipodean ingenuity with the world. Sydney | $250K – $20M | 66 | Leads | Active | ~2 wks | Req'd |
| 7 | ▶ MassMutual Ventures Build category-defining technology businesses that deliver strong investment returns while addressing pressing business challenges. Leverage Fortune 500 parent (MassMutual) assets including real estate portfolios, renewable energy assets, and capital networks. Boston | $2M – $10M | 23 | Both | Active | ~1 mo | Open |
| 8 | ▶ CapitalG Partner with remarkable growth-stage leaders to accelerate their journey from startup to scale-up through capital, operational expertise, and Google advisory access. Focus on transformational companies making the step change into growth. | $50M – $200M | 46 | Leads | Active | ~2 wks | Req'd |
| 9 | ▶ Accel Partner with exceptional teams building transformative technology companies across all stages San Francisco | $2M – $10M | 136 | Both | Active | N/A | N/A |
| 10 | ▶ Seventure Partners Seventure Partners identifies and backs innovative European companies in Life Sciences and Digital Technologies at all stages from seed to pre-IPO, serving as the lead investor and active board-level partner. The firm is a global pioneer in microbiome investing and has built a 25+ year track record of 150+ exits and 30 IPOs. Institutional backing from Natixis Investment Managers/Groupe BPCE provides unique co-investment and network access. Paris | $500K – $10M | 41 | Leads | Active | ~2 mo | Open |
| 11 | ▶ Highland Europe Highland Europe backs exceptional teams in Europe and Israel building the next generation of technology leaders, focusing on product-led software and consumer companies with organic growth, clear product-market fit, and capital discipline. London | $20M – $90M | 65 | Leads | Active | N/A | N/A |
| 12 | ▶ 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 | 63 | Follows | Active | ~2 wks | Open |
| 13 | ▶ Addition Backs founders with a proven track record building large, defensible, technology-enabled businesses, deploying roughly one-third of capital at early stage and two-thirds at growth stage with fast, single-decision-maker conviction. New York | $5M – $200M | 20 | Leads | Active | N/A | Req'd |
| 14 | ▶ One Peak We back exceptional founders and management teams building defensible, market-leading software businesses in high-growth categories, sourced in part through our proprietary PULSE data platform, and support them with a dedicated value-creation team. London | $15M – $150M | 23 | Leads | Active | ~1 mo | Open |
| 15 | ▶ 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 |
| 16 | ▶ Phoenix Court Phoenix Court partners with exceptional founders from pre-seed through public markets and beyond. The firm operates as a multi-stage, multi-fund group — LocalGlobe (seed), Latitude (growth), Solar (late-stage), and Basecamp (emerging managers) — built on the conviction that the best companies grow big not just in private markets but across their full lifecycle. Founded on purpose: 10% of profits and 2% of carry go to Phoenix Court Works, which is transitioning to the single largest shareholder in the firm. London | $500K – $20M | 33 | Leads | Active | ~1 mo | Req'd |
| 17 | ▶ TeleSoft Partners Provide entrepreneurs with capital, knowledge, contacts and expertise across technology and energy value chain companies, drawing on a nearly three-decade network of industry executives and strategic partners across the US, Europe, Israel, and India. Aspen, CO | $1M – $15M | 31 | N/A | 0mo | N/A | Req'd |
| 18 | ▶ EQT Growth Backs strong management teams of category-leading technology companies supported by secular macro trends, investing at the point where product-market fit is established and the company is ready to scale, combining large-check growth capital with EQT's operational network and AI-driven sourcing/diligence platform (Motherbrain). Stockholm | $55M – $270M | 10 | Leads | Active | ~2 mo | Req'd |
| 19 | ▶ HV Capital We back bold founders building category-defining companies across Europe. Too new is our baseline, too bold is our reason, too complex is our edge. Munich | $500K – $60M | 20 | Leads | Active | ~1 mo | Open |
| 20 | ▶ 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 |
| 21 | ▶ Revaia Revaia champions sustainable leaders in technology and innovation, partnering with mission-driven, growth-stage founders who bridge private growth financing through to public markets, with sustainability and governance built into the business rather than bolted on. Paris | $10M – $35M | 15 | Leads | Active | N/A | Req'd |
| 22 | ▶ 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 |
| 23 | ▶ 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 |
| 24 | ▶ Act Venture Capital Act is a long-term early-stage generalist that backs exceptional teams who truly understand their market and can become category-defining companies. The firm wants mission-driven founders, is willing to lead early, and stays with companies through expansion. Dublin 14, Ireland | $100K – $10M | 16 | Leads | Active | N/A | N/A |
| 25 | ▶ Atomico Founder-centric, largely sector-agnostic investing across Europe, backing technically strong founders building globally ambitious companies, including capital-intensive deep tech and moonshot bets alongside traditional software and consumer businesses. London | $5M – $50M | 13 | Leads | Active | N/A | Req'd |
| 26 | ▶ Caffeinated Capital Support founders pursuing their life's work with an alternative to the hype cycle: the luxury of long-term thinking. We support founders building category-defining companies across all sectors that will last for lifetimes. San Francisco | $1M – $5M | 19 | Leads | Active | N/A | N/A |
| 27 | ▶ Coatue The best investment opportunities emerge at the intersection of innovation and scale. We invest across the full lifecycle from seed to public markets, focusing on technology companies that will transform sectors globally with particular conviction in AI-enabled platforms and infrastructure. New York | $1M – $100M | 31 | Both | Active | ~2 wks | Open |
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Firms that frequently co-invest with investors on this page
F4 Fund tracks 27 VC firms that actively invest in security & cybersecurity + climate & clean energy 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 security & cybersecurity + climate & clean energy investors is $20.5M – $20.5M, with a full range from $100K – $500M. The distribution breaks down as: 1 firms in the <$500K range, 2 firms in the $2M-$5M range, 7 firms in the $5M-$10M range, 17 firms in the $10M+ range.
Among the 27 firms tracked, 89% 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 growth security & cybersecurity + climate & clean energy investors combine domain expertise with an active portfolio in the space. Among these firms, 50% prefer warm introductions, and the average firm has 38 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.