Glow, a cybersecurity startup building AI-agent-based monitoring for software and developer tools, has emerged from stealth with a $180 million all-equity Series A round that values the company at $1.2 billion. The round was led by Sequoia Capital, Cyberstarts, Greenoaks, and Redpoint Ventures, with participation from Index Ventures, Swish Ventures, Lux Capital, Operator Collective, and Holly Ventures.
The company operates out of Palo Alto and Tel Aviv and was founded in 2025 by chief executive Roi Tiger, a nine-year Meta veteran who most recently served as the company’s vice president of engineering and who previously co-founded mobile analytics firm Onavo. He is joined by chief technology officer Omer Singer, formerly head of cybersecurity strategy at Snowflake, and vice president of research and development Ophir Arie, who held the equivalent role at industrial security firm Claroty. Chief operating officer Emily Heath brings a security-executive résumé of her own, having served as chief information security officer at United Airlines and DocuSign and sat on the board of Wiz through its $32 billion acquisition by Google.
Betting On AI Agents As The New Attack Surface
Glow’s pitch is that the rapid enterprise rollout of AI agents, coding copilots, and other autonomous developer tools has created an attack surface that traditional endpoint security was never built to monitor. Rather than treating agentic software as just another application to sandbox, Glow positions its platform as a prevention-first layer purpose-built to watch how AI agents and developer tooling actually behave across an organization’s devices and infrastructure.
The company says it already has paying customers spanning healthcare, retail, and financial services, though it has not disclosed revenue figures. That combination — real customers without a public product roadmap until now — has been a recurring feature of Glow’s fundraising story. The startup first surfaced publicly in February 2026, when reports emerged that it was raising more than $100 million at a valuation above $1 billion while still operating almost entirely in stealth, a jump from a roughly $400 million valuation in its prior round.
An Instant Unicorn In A Crowded Endpoint Market
Glow’s $1.2 billion valuation puts it immediately among the better-capitalized names in endpoint security, a category that has drawn heavy investor attention as generative AI lowers the cost of writing malware and automating phishing at scale. The overlap between Glow’s backers and the investor base that built Wiz into a $32 billion Google acquisition is not incidental — several of the same funds are betting that AI-native security tooling, rather than incremental updates to legacy endpoint detection and response platforms, will define the next generation of category leaders.
Glow says the new capital will fund an expansion of its U.S. go-to-market team and grow Glow Labs, the company’s research arm, as it moves from stealth into open competition for enterprise security budgets.