Fundraising Fox

XBOW

Seattle, US · Founded 2024 · 304 employees on LinkedIn · 6 known investors

XBOW is an autonomous AI system that tests web applications and APIs to find and prove exploitable security vulnerabilities, chaining flaws into working attacks and delivering reproducible exploit evidence with remediation guidance. It serves enterprise security teams as a continuous alternative to point-in-time pentesting and scanners.

AI & Machine LearningCybersecuritySaaS

Founders & leadership

XBOW was founded in 2024 by Oegerikus de Moor.

OD
Oegerikus de MoorFounder

Board

KBKonstantine Buhler
Konstantine Buhlerin𝕏Partner @ Seed, Series A, Series B and BeyondInvestor at Sequoia Capital
AA
Apoorv AgrawalBoard director
RG
Ron GabriskoBoard director

Investors · 6

Alkeon InnovationNew York
NorthzoneLondon · $1M – $50M
S VenturesMountain View · $1M – $5M
Sequoia CapitalMenlo Park · $4.4M – $214M
Altimeter CapitalreportedMenlo Park · $1M – $25M
NVIDIAreportedSanta Clara

Funding

SEC filings, press & company announcements

$240.9M disclosed across 2 of 6 rounds · 2024–2026

▶$120.9MraisedMar 2026 · 13 investors · Other Technology
Rule 506(b)
Officers, directors & promoters on the filing
  • Oegerikus de MoorExecutive Officer, Director
  • Ron GabriskoDirector
  • Konstantine BuhlerDirector
  • Apoorv AgrawalDirector
Offering amount
$180M
Amount sold
$120.9M
First sale
Mar 2026
Incorporated
Corporation, Delaware, 2024
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Founder mafia

3 people who came through XBOW went on to found or lead other companies.

Konstantine BuhlerDirectorFounded Listen LabsRamin SayarMember Board of DirectorsFounded Sumo LogicOege de MoorCEO and founderFounded Semmle

In the news

Mythos for Offensive Security: XBOW's Evaluationxbow.com · May 2026XBOW, the unicorn with a Seattle mailbox, raises another $35M for its autonomous hacking platform – GeekWiregeekwire.com · May 2026XBOW Raises Series B to Advance Autonomous Penetration Testing | XBOWxbow.com · Mar 2026XBOW Raises $120M to Scale its Autonomous Hackerfinance.yahoo.com · Mar 2026Autonomous Offensive Security Firm XBOW Raises $120M at $1B+ Valuation - SecurityWeeksecurityweek.com · Mar 2026XBOW Raises $120M to Scale AI Pentesting | XBOWxbow.com · Mar 2026XBOW Announces $75M Series B Financing | Gunderson Dettmer Stough Villeneuve Franklin & Hachigian, LLPgunder.com · Jun 2025Sequoia Capital leads $20M seed round in XBOWxbow.com · Jul 2024

Frequently asked questions

What does XBOW do?
XBOW is an autonomous AI system that tests web applications and APIs to find and prove exploitable security vulnerabilities, chaining flaws into working attacks and delivering reproducible exploit evidence with remediation guidance. It serves enterprise security teams as a continuous alternative to point-in-time pentesting and scanners.
Who founded XBOW?
XBOW was founded by Oegerikus de Moor in 2024.
Who are XBOW's investors?
XBOW's investors include Alkeon Innovation, Northzone, S Ventures, Sequoia Capital, Altimeter Capital, NVIDIA.
How much funding has XBOW raised?
XBOW has disclosed $240.9M raised across 2 of its 6 known rounds.
Where is XBOW headquartered?
XBOW is headquartered in Seattle, US.