Horizon3.ai Revenue, Valuation, Funding & Investors

Horizon3.ai is valued at $2B as of August 2026.

Last Horizon3.ai valuation

$2B

Series E · Aug 2026

Last Horizon3.ai funding round

$250M

Series E · Aug 2026

Horizon3.ai revenue

$30M

Series D · May 2025

Key investors in Horizon3.ai

  • SignalFire
  • Craft Ventures
  • New Enterprise Associates
  • Qualcomm Ventures
  • Prosperity7 Ventures
  • Sapphire Ventures

Horizon3.ai Overview

About Horizon3.ai

Horizon3.ai is an Austin-headquartered cybersecurity firm offering NodeZero, an autonomous penetration testing platform that simulates attacker behaviors across cloud, on-premises, and hybrid environments. NodeZero Kubernetes Pentesting scans container workloads, while Tripwires detect lateral movement in real-time. FedRAMP-authorized, it serves U.S. government agencies and enterprises partnering with Tech Mahindra for global deployments.


Founded

2019

HQ

United StatesSan Francisco, CA

Status

Privately held

Customer focus

B2B & B2G

Revenue model

Subscription

Revenue

$30M (May 2025)

Valuation

$2B (Aug 2026)

Horizon3.ai Valuation

Horizon3.ai is currently valued at $2B, based on its Series E in August 2026.

The $250M round was led by New Enterprise Associates and NightDragon, with participation from Acrew Capital, Qualcomm Ventures, SignalFire, Prosperity7 Ventures, SAIC and 6 other investors.

Horizon3.ai's valuation has grown 40x from $50M at its Series A in February 2021 to $2B in August 2026, across 3 priced rounds.

Horizon3.ai valuation by funding round

Revenue multiple
Horizon3.ai valuation by funding round
DateStageValuationRevenue Multiple
Aug 2026Series E$2B-
May 2025Series D$750M25.0x
Feb 2021Series A$50M-

Horizon3.ai Revenue

Horizon3.ai's latest recorded revenue is $30M, as of its Series D in May 2025. At a $750M valuation, that implies a 25.0x revenue multiple.

Horizon3.ai revenue by funding round

Horizon3.ai revenue and valuation multiple by funding round
DateRevenue *ValuationRevenue MultipleStage
May 2025$30M$750M25.0xSeries D

* Revenue (or ARR) figures are the values recorded alongside each funding round. Typically run-rate revenue at the time of the deal, or a reported LTM (last 12 months) revenue.

Horizon3.ai Funding History

Horizon3.ai has raised a total of $429M across 7 funding rounds.

Horizon3.ai's first fundraising round was a $4M seed round in January 2020. The most recent completed round was a $250M Series E in August 2026.

Horizon3.ai funding rounds

Horizon3.ai funding rounds
DateStageInvestorsRaisedValuationDeal Summary
Aug 2026Series ENew Enterprise Associates (lead); NightDragon (lead); Acrew Capital; Qualcomm Ventures; SignalFire; Prosperity7 Ventures; SAIC; Demeter; EDBI; Sapphire Ventures; PSG Equity; Blue Cloud Ventures; Craft Ventures$250M$2BHorizon3.ai raised USD 250 million in a Series E round announced on August 3, 2026, at a valuation of more than USD 2 billion. The round was co-led by NightDragon and NEA, with Demeter Group among the new investors and participation from other new and returning backers. The company said it will use the capital to scale go-to-market operations, expand internationally into Singapore and Australia, deepen its presence across EMEA, and accelerate product development for its AI-native security platform NodeZero. Horizon3.ai also highlighted autonomous blue-team agents that can remediate findings directly from its pentest output, positioning the raise around the shift toward AI-driven offensive and defensive cybersecurity. Horizon3.ai is a San Francisco-based cybersecurity company focused on proactive security testing through NodeZero, which it describes as an AI-native platform. The round was oversubscribed, and existing investors NightDragon and NEA continued to back the company alongside several strategic investors, signaling continued support for its enterprise and public-sector expansion.
Jan 2026Undisclosed stageProsperity7 Ventures (lead)--Horizon3.ai, a provider of offensive security solutions, secured an investment from Prosperity7 Ventures on January 13, 2026, to protect AI datacenters and critical infrastructure. The partnership emphasizes safeguarding environments supporting the global economy, with Prosperity7 Ventures recognizing the urgency of securing front-line targets like AI datacenters. Horizon3.ai's NodeZero platform delivers autonomous pentesting that emulates real attackers to validate controls and measure breach containment strength across identity, cloud, and networks. At the time of the investment, nearly 5,000 organizations worldwide, including leaders in healthcare, energy, national security, and semiconductor manufacturing, relied on NodeZero to harden their environments. The funding followed the launch of Threat Informed Perspectives, a capability assessing breach containment. Prosperity7 Ventures, the diversified venturing fund of Aramco Ventures, supports Horizon3.ai's growth in proactive cybersecurity for high-stakes sectors.
May 2025Series DNew Enterprise Associates (lead); Qualcomm Ventures; SignalFire; 9Yards Capital; Craft Ventures$100M$750MHorizon3.ai is a San Francisco-based cybersecurity startup founded in 2019 by former U.S. Special Operations cyber operators, entrepreneurs, and experts, including CEO Snehal Antani, ex-CTO at Splunk. The company offers the NodeZero autonomous security platform, which uses AI and reinforcement learning for penetration testing, simulating real-world attacks to identify vulnerabilities, threat detection, and precision defense without false positives. It serves over 3,000 organizations globally, recently gained FedRAMP authorization for federal sales, and expanded into web app pentesting, vulnerability management, and high-security workloads. In May 2025, Horizon3.ai raised $100 million in a Series D round led by New Enterprise Associates (NEA), with participation from Craft Ventures, SignalFire, Qualcomm Ventures, and 9Yards Capital; an SEC filing showed $73 million secured at the time. Sources indicate a valuation upwards of $750 million, though unconfirmed if pre- or post-money. The funds aim to scale partnerships in Americas, EMEA, and APAC; innovate products; and penetrate federal markets including NSA’s Continuous Autonomous Pentesting program and Secret/Top Secret systems. NEA's Lila Tretikov joined the board. The company reported $30 million in annual recurring revenue (ARR) around the round, with 101% year-over-year revenue growth in early 2025, 100%+ YoY ARR growth, Rule of 40-positive status, and 2,962% three-year revenue growth earning #121 on the 2025 Inc. 5000 list (#1 in cybersecurity). Previously, it raised $40 million Series C in August 2023 led by Craft Ventures, bringing total funding to about $178.5 million pre-Series D. This positions Horizon3.ai amid rising AI-powered attacks, defining autonomous security against competitors in offensive security.
Aug 2023Series CCraft Ventures (lead); SignalFire$40M-Horizon3.ai, a leading provider of autonomous security solutions founded in late 2019, announced a $40 million Series C funding round led by Craft Ventures with participation from Signal Fire. The capital was allocated toward building out the company's enterprise-wide proactive security platform, expanding channel and partner presence, and meeting growing global customer demand. The round brought total funding raised to $78.5 million since inception. Horizon3.ai's flagship NodeZero platform provides autonomous penetration testing as a self-service SaaS solution, helping customers verify their security posture and reduce their exploitable attack surface. The platform features hundreds of exploit modules that can safely identify and exploit specific network weaknesses. Founded by a team including CEO Snehal Antani (former CTO at Splunk and leader in the U.S. Military's Joint Special Operations Command), Horizon3.ai demonstrated strong market traction with three times year-over-year customer growth and a customer base exceeding 300 organizations spanning 50 industries across 25 countries, including manufacturing, healthcare, financial services, education, and local government. The autonomous penetration testing market was projected to reach $2.7 billion by 2027, with Horizon3.ai competing against platforms such as Strike Security, Cobalt.io, and HackerOne.
Oct 2021Series BSignalFire (lead)$30M-Horizon3.ai, a San Francisco-based cybersecurity startup founded in 2019 by former Splunk CTO Snehal Antani and Anthony Pillitiere from U.S. Special Operations Command, develops NodeZero, an autonomous penetration testing platform that simulates attacker perspectives to identify and remediate security vulnerabilities proactively. The company raised $30 million in its Series B funding round on approximately October 29, 2021, led by SignalFire, with the capital intended to accelerate its product roadmap and go-to-market strategy. This followed a $5 million Series A on the same date, bringing early-stage funding momentum. The Series B positioned Horizon3.ai to disrupt traditional vulnerability scanning, pentesting, breach simulation, and attack surface management categories, which SignalFire's Ilya Kirnos noted as siloed and prone to false positives. The funding supported expansion in a market facing evolving AI-powered threats, with Horizon3.ai emphasizing continuous testing over periodic snapshots. Subsequent developments include a $40 million Series C in August 2023 led by Craft Ventures with SignalFire participation, raising total funding to about $78.5 million at that point for R&D, channel growth, and engineering. Later rounds in 2025, such as a $100 million Series D led by NEA targeting over $750 million valuation and $30 million ARR (as of mid-2025), along with FedRAMP authorization and over 150,000 pentests, highlight ongoing traction.
Feb 2021Series ASignalFire (lead)$5M$50M-
Jan 2020SeedSignalFire (lead); Ridge Ventures$4M--

Who has invested in Horizon3.ai?

15 investors have backed Horizon3.ai across its funding rounds, including SignalFire, Craft Ventures, New Enterprise Associates, Qualcomm Ventures, Prosperity7 Ventures and Sapphire Ventures.

Lead investors include New Enterprise Associates, NightDragon, Prosperity7 Ventures, Craft Ventures and SignalFire.


Horizon3.ai Investors

Investors in Horizon3.ai by funding rounds participated
InvestorHQRoundsRoleFirst check
SignalFireUnited StatesSan Francisco, CA6LeadJan 2020
Craft VenturesUnited StatesSan Francisco, CA3LeadAug 2023
Qualcomm VenturesUnited StatesSan Diego, CA2ParticipantMay 2025
New Enterprise AssociatesUnited StatesSan Francisco, CA2LeadMay 2025
Prosperity7 VenturesSaudi ArabiaDammam2LeadJan 2026
Acrew CapitalUnited StatesSan Francisco, CA1ParticipantAug 2026
NightDragonUnited StatesUnited States1LeadAug 2026
Ridge VenturesUnited StatesSan Francisco, CA1ParticipantJan 2020
SAICUnited StatesReston, VA1ParticipantAug 2026
DemeterFranceParis1ParticipantAug 2026
EDBISingaporeSingapore1ParticipantAug 2026
Sapphire VenturesUnited StatesAustin, TX1ParticipantAug 2026
PSG EquityUnited StatesBoston, MA1ParticipantAug 2026

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Horizon3.ai Competitors

Horizon3.ai competitors include listed companies like Red Violet and GB Group, and private ones like Devo, Trulioo, Exabeam and Keyfactor.

Public and private companies comparable to Horizon3.ai
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
DevoUnited StatesUnited StatesPrivate--$2B-
TruliooCanadaVancouverPrivate--$1.8B-
ExabeamUnited StatesSan Francisco, CAPrivate$100M-$2.4B24.0x
KeyfactorUnited StatesCleveland, OHPrivate$100M-$1.3B13.0x
Red VioletUnited StatesUnited StatesPublicly listed$90M$24M$1.2B11.7x
GB GroupUnited KingdomUnited KingdomPublicly listed$383M($45M)$489M1.6x

Horizon3.ai Public Comps

Horizon3.ai is still privately-owned, but its public comps include Business-intelligence, Innodata, A10 Networks, DoubleVerify, Planisware, Karooooo, CETC Cyberspace Security, Amplitude, Progress Software and Shanghai DZH.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Business-intelligence$389M$54M6.6x5.9x47.7x-
Innodata$252M$47M6.8x5.2x36.6x22.7x
A10 Networks$291M$62M6.3x5.7x29.4x19.1x
DoubleVerify$748M$136M2.7x2.5x14.6x7.4x
Planisware$228M$78M7.3x6.7x21.5x18.4x
Karooooo$337M$148M6.3x5.7x14.3x13.8x
CETC Cyberspace Security$338M$20M4.5x-73.6x-
Amplitude$343M($76M)4.6x4.1x(21.1x)98.8x

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Common questions about Horizon3.ai

When was Horizon3.ai founded?Horizon3.ai was founded in 2019.
Where is Horizon3.ai headquartered?Horizon3.ai is headquartered in San Francisco, CA, United States.
Is Horizon3.ai publicly listed?No, Horizon3.ai is a private, VC-backed company.
What is Horizon3.ai's valuation?Horizon3.ai was last valued at $2B in its Series E in August 2026.
How much funding has Horizon3.ai raised?Horizon3.ai has raised $429M across 7 funding rounds.
What was Horizon3.ai's last funding round?Horizon3.ai's last funding round was a $250M Series E in August 2026, led by New Enterprise Associates and NightDragon.
Who are Horizon3.ai's investors?Horizon3.ai's investors include SignalFire, Craft Ventures, Qualcomm Ventures, New Enterprise Associates, Prosperity7 Ventures, Acrew Capital, NightDragon, Ridge Ventures, SAIC, Demeter and 5 others.
What is Horizon3.ai's revenue?Horizon3.ai's latest recorded revenue is $30M (May 2025).
What is Horizon3.ai's revenue multiple?Horizon3.ai's latest valuation implies a 25.0x revenue multiple ($750M valuation on $30M of revenue).
Which companies are comparable to Horizon3.ai?Companies comparable to Horizon3.ai include Devo, Trulioo, Exabeam, Keyfactor, Red Violet and GB Group.

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