SYN Ventures Research
Investment Thesis
SYN Ventures is a venture capital firm exclusively dedicated to the cybersecurity ecosystem. Founded in 2021 by a team of former Fortune 500 CISOs, CEOs, CTOs, and founders, the firm's mission is to empower founders building transformational and disruptive solutions that significantly reduce technology risk. The firm believes that cyber has become a $10.5 trillion existential challenge — and that the proliferation of AI, cloud, and data expands the attack surface in ways that demand constant innovation. The SYN team leverages 400+ combined years of security experience to partner with founders at the earliest stages, offering not just capital but deep CISO networks, design partner introductions, potential acquirer relationships, and engineering/product/sales talent connections. Capital is explicitly described as "the least valuable aspect of our partnership."
Sector Focus
SYN Ventures invests in six primary verticals:
- Cybersecurity (network security, endpoint, identity, application security, AI security)
- Industrial Security (OT/ICS/SCADA protection)
- National Defense (cyber operations for US government and defense contractors)
- Privacy (data privacy technologies and governance)
- Regulatory Compliance (continuous controls monitoring, compliance automation)
- Data Governance (enterprise data security and lineage)
Portfolio companies span threat detection and response, identity security, AI security governance, SecOps automation, industrial cybersecurity, ransomware defense, API security, supply chain security, and incident response.
Stage Focus
SYN Ventures operates two distinct fund strategies:
- Flagship Funds (Fund I, Fund II, Fund III): Series A and Series B investments — leading or co-leading rounds in companies with enterprise traction. Fund I was $200M (2021), Fund II was $300M (May 2022), Fund III is targeting $300M.
- SYN Seed Fund: A dedicated $100M seed fund (final close March 2024, originally $75M — the largest dedicated cybersecurity seed fund in US history). Invests at pre-seed and seed in companies building transformational solutions without incremental features.
The portfolio shows investments from Seed through Late stage (Vectra.ai), with the heaviest concentration at Seed and Series A.
Check Size
Check sizes are not publicly disclosed. Third-party sources estimate an average of $5–10M per investment. However, SYN has led very large rounds — including Halcyon's $50M Series A, Arcade's $60M Series A, and Miggo's $17M Series A. Seed fund investments are likely $1–5M, while flagship fund checks are likely $5–30M+. The firm consistently leads or co-leads rounds rather than taking minority positions.
Lead Tendency
SYN Ventures leads rounds as a defining characteristic. Jay Leek has described the firm's approach as taking leading positions to ensure board representation and deep operational partnership. Examples: led Halcyon's $50M Series A (2023), led Miggo's $17M Series A (2025), led NetFoundry's Series A (2025), led Nullify's $12.5M round (2026), led Arcade's $60M Series A (2026).
Recent Activity
SYN Ventures has been actively deploying across both funds through 2025–2026:
- June 2026: Led Arcade's $60M Series A (AI agent security action layer)
- February 2026: Led Nullify's $12.5M investment (autonomous AI product security)
- January 2026: Invested in CodeIntegrity at Seed (runtime control for AI agents)
- 2025: Led Miggo's $17M Series A (AI runtime application defense)
- April 2025: Led NetFoundry's Series A (identity-first connectivity)
- 2025: Invested in Vectra.ai at Late stage (AI-powered threat detection)
- 2025: Seed investment in Helmet Security (MCP server and agentic AI protection)
- 2025: Seed investment in Aiceberg (AI model and agent governance; later acquired)
- April 2026: Celebrated 5 years and $1B raised milestone (LinkedIn)
The fund is actively deploying. Fund III is in fundraising with a $300M target.
Portfolio Highlights
SYN's 40-company portfolio includes 2 unicorns:
- Halcyon (anti-ransomware platform, Series A lead 2021/2023, unicorn as of 2024)
- Transmit Security (passwordless authentication, unicorn)
Notable acquired portfolio companies:
- Adlumin → acquired by N-Able Technologies
- Phosphorus → acquired
- Qwiet AI → acquired
- Revelstoke → acquired
- SecZetta → acquired
- Sevco Security → acquired
- Pangea → acquired
- Netography → acquired
- Boldend → acquired
- Aiceberg → acquired
The acquisition rate is very high — 10 of 40 portfolio companies have been acquired, reflecting the firm's strong CISO and acquirer network.
Team
- Jay Leek, Managing Partner and Co-Founder — Former CISO at Blackstone; also Founder and Managing Partner of ClearSky Security. 23+ years in security. CISSP, CISM, CISA certified.
- Art Coviello, Managing Partner & IC Chairman (Flagship Funds) — Former President, CEO, and Executive Chairman at RSA Security; oversaw RSA's acquisition by EMC for $2.1B; Board member at Tenable (TENB) and Synchrony Financial (SYF).
- Dan Burns, Managing Partner & IC Chairman (Seed Fund) — Co-founder and CEO at Optiv (built through merger of Accuvant and Fishnet Security, $2B+ revenues); Co-founder and CEO at Accuvant.
- Ryan Permeh, Partner — Co-Founder and Chief Scientist at Cylance (acquired by Blackberry for $1.4B); former Chief Scientist at McAfee; discoverer of the Code Red worm; 20+ patents in security and data science.
- Adam Cecil, COO & Operating Partner — Former CFO at CyberGRX (acquired by Marlin Equity), ProtectWise (acquired by Verizon), AlchemyAPI (acquired by IBM); VP Finance at Rally Software through IPO.
- Glenn Chisholm, Operating Partner — Co-founder and CEO at Obsidian Security; former CTO at Cylance; former CISO at Telstra. Serves on boards of Icite, Miggo, Obsidian Security, SquareX, and Delphos Labs.
- Marcio Lempert, Venture Partner — Based in Tel Aviv; former Managing Director at Finjan/M86 Security; Board Advisor at Solebit Labs (acq. Mimecast), Polyrize (acq. Varonis), Preempt Security (acq. CrowdStrike).
- Amal Kothari — Former Director at ISTARI; former VP at Barclays Ventures; former Associate at Creador; former Analyst at Olympus Capital and Citi IBD.
- Dylan Posner — Former Senior Analyst at AIG Asset Management.
- John Watters, Venture Partner — Former President and COO at Mandiant (acquired by Google Cloud); Founder and CEO at iSIGHT Partners (acquired by FireEye); former CEO at iDEFENSE (acquired by Verisign).
- Alex Tosheff, Operating Partner — Board Director at Tenable; former CSO at VMware; former CISO at PayPal; former CTO at SAIC.
- Tim McKnight, Venture Partner — CISO at UnitedHealth Group; former CSO at SAP; former CISO at Thomson Reuters and General Electric; former EVP at Fidelity.
- Rob Potter, Venture Partner — Former EVP Strategic Operations at Mandiant; former CRO at Verodin (acquired by FireEye); former VP Americas at Symantec; former VP Sales at RSA.
- Jessvin Thomas, Partner — Former CPO at Adlumin (acquired by N-Able); former SVP & CTO at Barracuda SKOUT Managed XDR; former President & CTO at SKOUT Secure Intelligence (acquired by Barracuda).
- Robert Rodriguez, Venture Partner — Chairman and Founder of SINET (Security Innovation Network); former Special Agent with the US Secret Service.
Decision Process
SYN Ventures operates via Investment Committees. The flagship funds have Art Coviello as IC Chairman; the Seed Fund has Dan Burns as IC Chairman. Jay Leek leads the overall firm as Managing Partner. Board seats are typically taken for portfolio companies (Glenn Chisholm alone serves on five boards). The firm appears to take an investment committee model with concentrated decision-making among the senior managing partners.
Founder Preferences
SYN explicitly targets former CISOs and Fortune 500 security professionals as entrepreneurs and seeks founders building transformational (not incremental) solutions. They value technical depth in offensive and defensive security, teams that understand enterprise buying cycles, and companies that can leverage the SYN CISO network for design partnerships and early revenue. Companies should address genuine technology risk reduction, not just compliance theater.
Geographic Focus
SYN Ventures is headquartered in West Palm Beach, FL. The vast majority of portfolio companies are US-based. Marcio Lempert operates from Tel Aviv, enabling coverage of Israeli cybersecurity startups — Miggo, Cranium, Mitiga, and Metabase Q are Israeli companies. The firm invests primarily in US and Israeli cybersecurity innovators.