Glow raises $180M Series A at $1.2B valuation

Glow, a Tel Aviv-based startup, emerged from stealth in 2025 with $180 million in Series A funding that values the company at $1.2 billion. The round was led by Sequoia, Cyberstarts, Greenoaks and Redpoint Ventures, with participation from Index Ventures, Swish Ventures, Lux Capital and Holly Ventures.

Glow develops endpoint security software that uses specialized AI agents to control what runs on employee devices. The agents map device environments, analyze risk in real time and automatically enforce policies to allow or remove software.

The startup’s founders are CEO Roi Tiger, formerly VP of engineering at Meta; CTO Omer Singer, formerly head of cybersecurity strategy at Snowflake; and Ophir Arie, formerly VP of R&D at Claroty. Other executives include Arnon Joseph as chief product officer and Emily Heath as chief strategy officer.

Glow described its system as using context and a reasoning engine to adapt to changes and reduce the endpoint attack surface. The company said the design aims to let employees use AI while limiting exposure to fast-moving attacks it calls “Mythos-class” capabilities.

While in stealth, Glow signed enterprise customers in financial services, healthcare and retail. The company plans to use the funding to accelerate go-to-market work in the United States and to expand its research arm, Glow Labs.

Emily Heath, chief strategy officer and a former CISO at United Airlines and DocuSign, commented: “I sat in the CISO seat for a long time, and I can tell you the tools available to us were never built for what enterprises face today. Every enterprise wants to move faster with AI. The question isn’t whether they’ll adopt it-it’s whether security can keep up. That’s the challenge Glow is solving.”