7 VC firms investing in security & cybersecurity and marketing & adtech at the Growth stage.
F4 Fund tracks 7 VC firms that actively invest in security & cybersecurity + marketing & adtech at the Growth stage, with check sizes ranging from $100K – $500M (median: $27.5M – $27.5M). As of August 2026, and 100% lead or co-lead rounds. Rankings are based on F4's proprietary analysis of 1,644+ researched VC firms, scored by data completeness, portfolio depth, investment recency, and stage alignment.
| # | Firm | Check Size | Portfolio | Leads? | Activity | Decision | Intro |
|---|---|---|---|---|---|---|---|
| 1 | ▶ Oktogon Ventures Oktogon Ventures backs high-growth technology startups from Central and Eastern Europe, especially teams with global ambition and enough traction to show the product is already working. The firm is explicit about wanting technology-heavy B2B SaaS companies, early revenue, and founders who are willing to partner with a minority investor that adds mentoring, sales, hiring, and fundraising support. Its portfolio and public positioning show a preference for practical, revenue-oriented execution over speculative, pre-product narratives. Budapest | $100K – $400K | 25 | Both | Active | N/A | Open |
| 2 | ▶ Summit Partners Summit Partners backs category-leading companies in Technology, Healthcare & Life Sciences, and Growth Products & Services, investing $10M-$500M per company to power profitable growth. They take minority or majority positions as active board partners backed by the Peak Performance Group operational team. Boston | $10M – $500M | 40 | Leads | Active | ~2 mo | Open |
| 3 | ▶ Accel Partner with exceptional teams building transformative technology companies across all stages San Francisco | $2M – $10M | 136 | Both | Active | N/A | N/A |
| 4 | ▶ 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 |
| 5 | ▶ Volition Capital We invest in founder-owned, capital-efficient businesses that aspire to lead their markets, keeping business human through transparent, genuine partnership. Boston | $5M – $50M | 62 | Leads | Active | N/A | N/A |
| 6 | ▶ 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 |
| 7 | ▶ Qumra Capital Highly analytical, data-driven Israeli technology companies with at least $10M in annualized revenue, scaling toward global category leadership, primarily in the US market. Tel Aviv | $15M – $60M | 28 | Leads | Active | N/A | N/A |
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 7 VC firms that actively invest in security & cybersecurity + marketing & adtech 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 + marketing & adtech investors is $27.5M – $27.5M, with a full range from $100K – $500M. The distribution breaks down as: 1 firms in the <$500K range, 1 firms in the $5M-$10M range, 5 firms in the $10M+ range.
Among the 7 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 growth security & cybersecurity + marketing & adtech investors combine domain expertise with an active portfolio in the space. Among these firms, 0% prefer warm introductions, and the average firm has 57 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.