AI security startup
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Series B funded, July 2026
Horizon3.ai crossed a $2 billion valuation August 3 with a $250 million Series E, tripling its valuation from $650 million in 14 months. The oversubscribed round, co-led by NightDragon and NEA, extended a run of large-check deals that began with Exaforce's $125 million Series B in May.
Updated 7 days ago
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