When was Horizon Three AI founded?

Horizon Three AI was founded in 2019 and became a unicorn in 2026, reaching the milestone in 7 years. It raised its 1st funding round 1 year after its incorporation.

Where is Horizon Three AI located?

Horizon Three AI is headquartered in San Francisco, United States. It is registered at 5900 BALCONES DR STE 100,AUSTIN,TX,78731.0,227.

Who is the current CEO of Horizon Three AI?

Snehal Antani of Horizon Three AI. They have also founded 1 company.

How many employees does Horizon Three AI have?

As of Sep 30, 2026, the latest employee count at Horizon Three AI is 601.

Is Horizon Three AI a funded company?

Horizon Three AI is a funded company, having raised a total of $436M across 8 funding rounds to date. The company's 1st funding round was a $2.5M Seed round, raised on Jan 24, 2020.

How much is Horizon Three AI worth?

The latest valuation of Horizon Three AI is $2B as of Aug 18, 2026.

When was the latest funding round of Horizon Three AI?

Horizon Three AI's latest funding was a $250M Series E round on Aug 03, 2026, with participation from 12 investors. Its primary sector is Cybersecurity. In United States, the Cybersecurity sector has seen $8.24B in funding in 2026 to date.

Is Horizon Three AI a Cybersecurity company?

The primary sector of Horizon Three AI is Cybersecurity.

Where does Horizon Three AI rank among its competitors?

Horizon Three AI ranks 12th amongst 528 active competitors, of which 46 are funded. It stands 4th in terms of total funding among its competitors. The most recent competitor to raise funding was Horizon Three AI, which secured $250M in Aug, 2026.

Who are the top competitors of Horizon Three AI?

Horizon Three AI's top competitors include Vercel, Snyk and Checkmarx. Among them, Horizon Three AI secured the most recent funding round in August, 2026.

Horizon Three AI - 2026 Company Profile, Team, Funding & Competitors

Horizon Three AI is a series E company based in San Francisco (United States), founded in 2019 by Snehal Antani and Anthony Pillitiere. It operates as a Cloud based pentesting platform. Horizon Three AI has raised $436M in funding from investors like SignalFire, New Enterprise Associates and Craft Ventures, with a current valuation of $2B. The company has 528 active competitors, including 46 funded and 32 that have exited. Its top competitors include companies like Vercel, Snyk and Checkmarx.

Company Details

Cloud based pentesting platform. The features of the platform include configuration control, discovering and authorization of assets, vulnerability assessment, security posture analysis, and more. It also prioritizes vulnerabilities, performs audits, and identifies compromised data.

Website: horizon3.ai
Social
Email ID: *****@horizon3.ai
Phone Number: +1 **********
Registered Address: 5900 BALCONES DR STE 100,AUSTIN,TX,78731.0,227

Key Metrics

Founded Year

2019

Location

San Francisco, United States

Stage

Series E

Total Funding

$436M in 8 rounds

Latest Funding Round

Series E, Aug 03, 2026, $250M

Post Money Valuation

$2B as on Aug 18, 2026

Investors

SignalFire & 16 more

Ranked

12^th among 528 active competitors

Employee Count

601 as on Sep 30, 2026

Similar Companies

Cobalt & 395 more

View Horizon Three AI's full profile

Horizon Three AI is associated with 2 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
HORIZON 3 AI, INC. CIN: 220561492 , United States, Active	Dec 15, 2023	-	159 (As on Dec 31, 2024)	-
HORIZON 3 AI, INC. CIN: 32091687486 , United States, Active	Sep 18, 2023	-	-	-

Horizon Three AI has raised a total funding of $436M over 8 rounds. Its first funding round was on Jan 24, 2020. Its latest funding round was a Series E round on Aug 03, 2026 for $250M. 12 investors participated in its latest round. Horizon Three AI has 17 institutional investors.

Here is the list of recent funding rounds of Horizon Three AI:

Filter this list

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Aug 03, 2026	$250M	Series E	-	-	NightDragon, New Enterprise Associates	Acrew Capital, Blue Cloud Ventures, EDBI, SAIC, Sapphire Ventures, PSG, Prosperity7 Ventures, Qualcomm Ventures, Ridge Ventures, SignalFire
Jan 13, 2026	Undisclosed	Series D	-	-	-	Prosperity7 Ventures
May 08, 2025	$100M	Series D	-	-	New Enterprise Associates	SignalFire, Craft Ventures, 9yards Capital

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View details of Horizon Three AI's funding rounds and investors

The founders of Horizon Three AI are Snehal Antani and Anthony Pillitiere. Snehal Antani is the CEO of Horizon Three AI.

Here are the details of Horizon Three AI's key team members:

Snehal Antani: Co-Founder & CEO of Horizon Three AI. They serve on the board of 1 company.
Anthony Pillitiere: Co-Founder of Horizon Three AI. They serve on the board of 1 company.

Horizon Three AI's Board of Directors

Horizon Three AI's board has 7 active members. Nicholas Warner, Michael Robinson, Snehal Antani, Anthony Pillitiere, Lila Tretikov, Ilya Kirnos and Antani Snehal are independent board members.

Here is the list of Horizon Three AI's board of directors:

Name	Type	Representing	Status	Duration
Nicholas Warner	Independent board member	-	Current	1y 4m
Michael Robinson	Independent board member	-	Current	3y 2m
Snehal Antani	Independent board member	-	Current	6y 8m
Anthony Pillitiere	Independent board member	-	Current	6y 8m
Lila Tretikov	Independent board member	-	Current	1y 4m
Ilya Kirnos	Independent board member	-	Current	6y 8m
Antani Snehal	Independent board member	-	Current	4y 10m

View details of Horizon Three AI's Founder profiles and Board Members

Horizon Three AI's employee count trend

Horizon Three AI has 601 employees as of Sep 26. Here is Horizon Three AI's employee count trend over the years:

Employee count trend for Horizon Three AI

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Top competitors of Horizon Three AI include Vercel, Snyk and Checkmarx. Here is the list of Top 10 competitors of Horizon Three AI, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Vercel 2015, Covina (United States), Series F	Provider of cloud infrastructure and developer tools for web applications	$863M	Accel, GIC & 30 others	82/100
2nd	Snyk 2015, Boston (United States), Series G	Provider of a platform securing code, models, and agents in applications	$1.32B	Boldstart Ventures, Accel & 77 others	78/100
3rd	Checkmarx 2006, Atlanta (United States), Acquired	Provider of application security platform unifying testing, monitoring, and remediation	$98.5M	XT Group, XT Hi-Tech & 6 others	73/100
4th	Cobalt 2013, San Francisco (United States), Series B	Provider of penetration testing as a service and offensive security	$36.6M	Highland Europe, Kima Ventures & 24 others	71/100
5th	Synack 2013, San Francisco (United States), Series D	Platform offering security testing solution	$112M	Kleiner Perkins, Icon Ventures & 25 others	70/100
6th	Veracode 2006, Burlington (United States), Acquired	Provider of software security testing and automated code remediation tools	$107M	Meritech, Wellington & 15 others	68/100
7th	Semgrep 2017, San Francisco (United States), Series D	Platform offering code analysis and review solutions	$193M	Redpoint Ventures, Felicis Ventures & 4 others	68/100
8th	Invicti 2006, Austin (United States), Series B	Provider of web application and API security testing and management	$665M	Turn/River Capital, Summit Partners & 1 others	66/100
9th	XBOW 2024, Seattle (United States), Series C	AI-powered autonomous penetration testing platform	$270M	Northzone, Altimeter Capital & 18 others	66/100
10th	StackHawk 2019, Denver (United States), Series B	Cloud based security testing software	$47.4M	Sapphire Ventures, Costanoa & 6 others	62/100
12th	Horizon Three AI 2019, San Francisco (United States), Series E	Cloud based pentesting platform	$436M	Sapphire Ventures, Qualcomm Ventures & 15 others	60/100

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Horizon Three AI has made no investments or acquisitions yet.

Here is the latest report on Horizon Three AI's sector:

Free

Cybersecurity - Sector Report

Edition: September, 2026 (104 Pages)

View all reports related to Horizon Three AI

Media has covered Horizon Three AI for a total of 33 events in the last 1 year, 11 of them have been about company updates and 4 about people movement.