Glow leaves stealth with $180 million Series A at a $1.2 billion valuation

Glow, an AI-native endpoint security startup, emerged from stealth on July 22 with $180 million in Series A funding at a $1.2 billion valuation, the company said.

The all-equity round was led by Sequoia Capital, Cyberstarts, Greenoaks and Redpoint Ventures, with participation from Index Ventures, Lux Capital and others. The valuation puts Glow above $1 billion before it has shipped a public track record — a bet on the founders and on the idea that AI agents can finally make security prevention practical at enterprise scale.

Founded in 2025 and based in Palo Alto, Glow is led by Chief Executive Roi Tiger, a former vice president of engineering at Meta, and Chief Technology Officer Omer Singer, who ran cybersecurity strategy at Snowflake. Chief Operating Officer Emily Heath was previously chief information security officer at United Airlines and DocuSign.

Glow’s platform uses specialized AI agents to continuously map an enterprise’s device and software environment, assess risk in real time, and automatically enforce security policy — an attempt to displace the endpoint detection tools that dominate corporate security today. The company says it has already signed customers in healthcare, retail and financial services, though it named none of them.

“Prevention was always the right answer in security. It just never worked at enterprise scale without blocking the business,” Tiger said.

Those customer claims and the platform’s efficacy are the company’s own account, not independently verified, and the endpoint market is crowded with well-funded incumbents. Glow says the funding will accelerate its U.S. go-to-market hiring and expand Glow Labs, its research arm.

Whether Glow’s agent-driven prevention holds up against real attacks, and whether those unnamed enterprise customers convert into referenceable deployments, is what will justify the $1.2 billion price.