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Horizon3.ai

Horizon3.ai develops NodeZero which provides an autonomous penetration testing solution that helps customers find and fi
Network Management Software 📍 Dover, DE Founded 2019
Current Valuation
$660M
as of 2026-Q1
PRIVATE
Horizon3.ai develops NodeZero which provides an autonomous penetration testing solution that helps customers find and fix attack vectors.

Company Profile

Founded
2019
HQ
Dover, DE
Employees
387
Total Raised
$183.5M
Last Round
Series D — $100M (Jan 2026)
IPO Status
private

Fundraising Status

Series D · $100M · 7 mo ago
privateTotal raised $183.5M

Secondary Market

Implied price / share
$7
Last round price / share
$4.78
vs last round
+46.4%
Last round price vs secondary price
Last round vs current secondary price per share$4.78Last round$7.00Current
Secondary price return by period
Secondary market period returns3-month-1.7%6-month+2.5%1-year+40.0%All-time+40.0%
Implied per-share price from private secondary transactions, as of Jun 2026. This is a point estimate, not a quote — the feed carries no bid, ask or spread, and a secondary print is evidence of what someone paid on that date rather than a live market. Compare across every tracked name →

Latest Funding Round

RoundAmountDateLead InvestorPost-Money
Series D$100MJan 2026—$660M
Enterprise SoftwareCyber SecurityNetwork SecurityMachine LearningArtificial Intelligence
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2026-Q1. Refreshed quarterly.