21 VC firms investing in security & cybersecurity and legal & regtech at the Series A stage.
F4 Fund tracks 21 VC firms that actively invest in security & cybersecurity + legal & regtech at the Series A stage, with check sizes ranging from $100K – $100M (median: $5.0M – $5.0M). As of June 2026, and 100% lead or co-lead rounds. Rankings are based on F4's proprietary analysis of 1,356+ researched VC firms, scored by data completeness, portfolio depth, investment recency, and stage alignment.
| # | Firm | Check Size | Portfolio | Leads? | Activity | Decision | Intro |
|---|---|---|---|---|---|---|---|
| 1 | ▶ embedded/capital We invest in technology-enabled financial services companies that transform how financial services are delivered, distributed, and accessed. We believe the future of finance will be built by specialized platforms that solve specific pain points for financial institutions and retail investors. New York | $250K – $15M | 27 | Both | Active | ~2 wks | Req'd |
| 2 | ▶ 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 |
| 3 | ▶ Accel Partner with exceptional teams building transformative technology companies across all stages San Francisco | $2M – $10M | 127 | Both | Active | — | — |
| 4 | ▶ MissionOG Operator-led growth investor backing high-growth B2B technology companies driving digitization in fintech, data, and AI-driven technologies, especially proprietary data, regulated workflows, and infrastructure layers that AI agents need to call into. Philadelphia | $5M – $10M | 28 | Both | Active | ~1 mo | — |
| 5 | ▶ Dropbox Ventures The next generation of transformative work applications will be powered by AI. We seek to back founders building unique, innovative AI-powered tools that reshape how people collaborate, create, and manage information. Strategic integration with Dropbox ecosystem amplifies value. San Francisco | $100K – $1M | 15 | Leads | Active | ~2 wks | Open |
| 6 | ▶ Flourish Ventures Mission-driven entrepreneurs and industry influencers can responsibly harness technology to build a more fair and inclusive financial system that serves unbanked and underserved populations. California | $1M – $15M | 25 | Leads | Active | ~2 wks | Open |
| 7 | ▶ Roo Capital Brings private equity rigor to early-stage venture with a Capital + Talent + Growth model. Invests in Vertical SaaS, AI, Cybersecurity, and Health Tech from Pre-Seed to Series A, combining capital with in-house executive search (Roo Search, 23,000+ candidates, 600+ placements) and operational playbooks (Roo Growth). Targets companies bridging MVP to scale. Miami | $250K – $9.5M | 17 | Leads | Active | ~1 mo | Open |
| 8 | ▶ Myriad Venture Partners Back exceptional founders building transformational B2B companies in AI, enterprise software, cybersecurity, and clean technology. The Myriad Model combines capital with a curated ecosystem of 30+ Fortune 500 executives who accelerate commercial traction through introductions, POCs, and commercial contracts. Boston | $250K – $3M | 23 | Leads | Active | — | — |
| 9 | ▶ Pathlight Ventures Low volume, high conviction early-stage investing in 10 thematic areas where vertical AI is reshaping regulated, complex industries: healthcare, fintech, capital markets, industrial operations, security, and government. Back strongly opinionated founders building category-defining companies with direct operator support from a team with deep fintech and growth scaling experience. New York City | $250K – $3M | 39 | Leads | Active | ~1 mo | Open |
| 10 | ▶ Moxxie Ventures Exceptional founders living in the future deserve operators who provide more than capital. We partner with founders on go-to-market, brand, storytelling, and team building. San Francisco | $500K – $2M | 50 | Leads | Active | ~2 wks | Open |
| 11 | ▶ 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 |
| 12 | ▶ 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 |
| 13 | ▶ 11 Tribes Ventures Founder-first early-stage investing that combines capital with founder resilience, operating support, and capital-efficient company building for durable, profitable outcomes. Chicago | $1M – $1.5M | 29 | Leads | Active | ~1 mo | Open |
| 14 | ▶ 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 |
| 15 | ▶ Concrete Rose Capital We invest financial and social capital into exceptional ventures led by visionary, values-aligned teams. Technology is the 'new West' - we seek to broaden opportunities by partnering with pioneering founders to bring entire communities along on their journey of reimagining the world. San Francisco | $100K – $5M | 47 | Both | Active | ~2 mo | Open |
| 16 | ▶ 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 |
| 17 | ▶ Entrepreneurs Roundtable Accelerator (ERA) NYC has tremendous entrepreneurial talent but lacked a structured environment for early-stage founders. ERA provides capital, intense mentorship, and network access to help founders build market-leading companies. Every sector deserves innovation. New York | $150K – $150K | 39 | Leads | Active | ~2 mo | Open |
| 18 | ▶ FirstMark We back disruptive founders building category-defining companies. Our approach is founder-first, long-term, and deeply operational. We take the longest view in the room, operate with excellence and integrity, stay curious at the bleeding edge, and invest heavily in building community. New York | $250K – $10M | 32 | Leads | Active | ~2 wks | Req'd |
| 19 | ▶ Evantic Capital At the intersection of generational talent and transformative artificial intelligence. Evantic backs exceptional founders building AI-first B2B software, infrastructure, and platform businesses with the potential to become global market leaders. London | $1M – $60M | 10 | Both | Active | — | — |
| 20 | ▶ SignalFire Data and technology combined with sector expertise and operational support unlock unfair advantages for early-stage startups. We build venture capital like a tech company. San Francisco | $250K – $100M | 14 | Leads | Active | ~2 wks | Open |
| 21 | ▶ Expa We build category-defining companies through a combination of design, product, operations, and capital. We identify market gaps, pair brilliant founders with Expa's studio resources, and help them build companies that reshape entire industries. San Francisco | $500K – $5M | 60 | Leads | Active | ~1 wk | 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 21 VC firms that actively invest in security & cybersecurity + legal & regtech at the Series A 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 a security & cybersecurity + legal & regtech investors is $5.0M – $5.0M, with a full range from $100K – $100M. The distribution breaks down as: 1 firms in the <$500K range, 1 firms in the $500K-$1M range, 4 firms in the $1M-$2M range, 3 firms in the $2M-$5M range, 8 firms in the $5M-$10M range, 4 firms in the $10M+ range.
Among the 21 firms tracked, 100% lead or co-lead rounds. 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 a security & cybersecurity + legal & regtech investors combine domain expertise with an active portfolio in the space. Among these firms, 29% 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.