14 VC firms investing in security & cybersecurity and hr tech & future of work at the Series B stage.
F4 Fund tracks 14 VC firms that actively invest in security & cybersecurity + hr tech & future of work at the Series B stage, with check sizes ranging from $100K – $400M (median: $22.5M – $22.5M). As of August 2026, and 93% lead or co-lead rounds. Rankings are based on F4's proprietary analysis of 1,556+ researched VC firms, scored by data completeness, portfolio depth, investment recency, and stage alignment.
| # | Firm | Check Size | Portfolio | Leads? | Activity | Decision | Intro |
|---|---|---|---|---|---|---|---|
| 1 | ▶ Storm Ventures Storm Ventures backs early-stage B2B enterprise software companies with a focus on AI-native applications, cybersecurity, and cloud infrastructure. They employ a 'paddling to surfing' growth methodology and have deep expertise in taking companies from inception to $100M+ ARR. Their philosophy: 'the interface layer will disappear. The infrastructure layer will compound.' Menlo Park | $1M – $15M | 67 | Leads | Active | ~1 mo | N/A |
| 2 | ▶ Sixth Street Growth Sixth Street Growth provides flexible, patient capital to mid- and late-stage technology companies, pairing growth equity and bespoke credit solutions with deep operating expertise through its 'More Than Capital' platform. Focus areas include enterprise SaaS, fintech/payments, healthcare IT, cybersecurity, and data infrastructure. San Francisco | $40M – $400M | 55 | Both | Active | ~2 mo | Req'd |
| 3 | ▶ Tola Capital Every industry will be transformed by software. Tola practices hypothesis-based investing targeting the 'enterprise scaffolding' of AI — domain-specific models, AI/ML tooling, AI SaaS applications, AI governance, and AI security — rather than foundational AI infrastructure. They back companies driving long-term, transformational change in large markets. Seattle | $1M – $15M | 52 | Leads | Active | ~1 mo | Open |
| 4 | ▶ ServiceNow Ventures ServiceNow Ventures invests in AI-first enterprise companies that can extend the ServiceNow platform, accelerate enterprise digital transformation, and advance the potential of AI across workflows. The firm seeks visionary founders building at the intersection of AI, automation, and enterprise software. Santa Clara, CA | $5M – $50M | 18 | Follows | Active | 3+ mo | Req'd |
| 5 | ▶ Scale Venture Partners The next decade will be defined by the addition of machine intelligence to software. Scale backs 'Cognitive Apps' — AI-powered applications that augment manual work and enable data-driven predictions — partnering with founders who can transition from founder-led to scalable go-to-market, accompanying them from Series A through IPO. Foster City, CA | $5M – $30M | 51 | Leads | Active | ~2 mo | Open |
| 6 | ▶ Stripes Stripes invests in companies with exceptional products for consumers and businesses, acting as an of-service growth partner. Product-market fit is the prerequisite; Stripes provides the operational muscle — go-to-market, talent, network, and capital markets support — to scale from product-led growth to market-leading brand. New York | $10M – $150M | 79 | Leads | Active | ~2 mo | Open |
| 7 | ▶ Homebrew Help founders build companies of which they can be proud. We invest in mission-driven founders solving large, urgent problems using technology to create substantive change. Capital is necessary but not sufficient—sweat, reputation, and accountability are our core commitments. San Francisco | $100K – $500K | 26 | Both | Active | ~1 wk | Req'd |
| 8 | ▶ PeakSpan Capital PeakSpan invests exclusively in Applied AI B2B software scale-ups at $3M–$50M+ ARR, providing growth equity combined with hands-on operational platform support (500+ expert community, proprietary technology tools, proven playbooks) to help founders scale with discipline and achieve optimal risk-adjusted exits. New York | $10M – $50M | 57 | Leads | Active | ~1 mo | N/A |
| 9 | ▶ 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 |
| 10 | ▶ R136 Ventures Identifies inflection points through proprietary Discovery Engine and backs founders who see opportunities others miss. Focuses on AI-driven transformation of B2B software and financial services, with deep technical due diligence analyzing 250+ data points. Woodside, CA | $2M – $20M | 42 | Both | Active | ~1 mo | Open |
| 11 | ▶ Marathon Management Partners Partners with founders who are verifiably obsessed with winning the end-markets they are building in. Conviction investing — lead rounds, take significant positions, and join boards in category-defining software and fintech companies. New York | $1M – $20M | 5 | Leads | Active | N/A | N/A |
| 12 | ▶ 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 |
| 13 | ▶ Mucker Capital Mucker Capital is an early-stage venture capital firm investing in technology companies from pre-seed through Series B. We partner closely with founders building scalable businesses, often providing a company’s first institutional check and continuing to support them through later stages. Mucker has offices in Venice, California, Austin, and Toronto, and primarily invests across the United States and Canada, with the ability to back exceptional founders in other markets. Venice | $100K – $15M | 22 | Leads | Active | ~2 mo | Open |
| 14 | ▶ Insight Partners Software founders need more than capital to scale successfully. Insight Partners combines investment capital with hands-on operational expertise, embedded teams, and network access to accelerate company growth across all stages. New York | $10M – $350M | 28 | Leads | Active | ~1 mo | Open |
What other stages do these firms also invest in?
Investors on this page also frequently invest in these sectors
What other sectors do these firms also invest in?
F4 Fund tracks 14 VC firms that actively invest in security & cybersecurity + hr tech & future of work 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 security & cybersecurity + hr tech & future of work investors is $22.5M – $22.5M, with a full range from $100K – $400M. The distribution breaks down as: 1 firms in the <$500K range, 3 firms in the $5M-$10M range, 10 firms in the $10M+ range.
Among the 14 firms tracked, 93% 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 series b security & cybersecurity + hr tech & future of work investors combine domain expertise with an active portfolio in the space. Among these firms, 36% prefer warm introductions, and the average firm has 39 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.