Horizon3 raises $250.0M Series E (United States, Aug 2026)
Reach the investors backing rounds like this
Backed by NightDragon, NEA · verified emails and LinkedIn on Datapile
Horizon3 hits $2 billion valuation with $250M Series E as AI threats escalate - TechCrunch
Horizon3 is a cybersecurity startup that specializes in AI-driven security testing to identify vulnerabilities in networks. The company serves enterprises looking to enhance their security measures against increasing AI-driven threats, and has recently raised $250 million in funding to expand its operations and R&D efforts.
Horizon3 hits $2 billion valuation with $250M Series E as AI threats escalate TechCrunch
20,207 investors back startups in United States
You just read who funded Horizon3. The same database has the investors behind every other round — with verified emails, check sizes and the stages they actually write at.
Free account: 5 investor contact unlocks a month, no card required.