HiddenLayer

HiddenLayer announced $100M in Series B financing on September 2, 2026. HiddenLayer raised a $100 million Series B led by Delta-v Capital to deepen its enterprise AI security platform, including runtime security for AI agents.

Round details

The financing includes backing from Delta-v Capital, Ten Eleven Ventures, Morgan Stanley, M12, Booz Allen Ventures. The company did not publish a valuation with the announcement.

• Round: Series B
• Capital announced: $100M

How the company plans to use the capital

HiddenLayer said it will use the funding to deepen its enterprise platform, including its Agentic Runtime Security capabilities. The release also names Agent Harness Security, described as a new solution that extends the Runtime Security module to secure AI coding agents at runtime.

Why this matters for GTM teams

The announcement cites figures from HiddenLayer’s 2026 AI Threat Landscape Report: 96% of organizations already consider AI critical to their core operations, and nearly a third cannot say with certainty whether they have experienced an AI-related breach.

Fresh capital is often an operational signal rather than a buying signal by itself. Teams should validate the company’s hiring pattern, product launches, geographic expansion, and technology priorities before choosing the message and timing of outreach.

Source and methodology

This report is based on the company’s announcement and records the disclosed amount, round, investors, location, and stated use of funds. SalesTools Research does not estimate undisclosed valuation or revenue figures.

Primary source: HiddenLayer Series B announcement.