AI-native cybersecurity platform that runs entirely on-premises or in private cloud, for institutions that cannot use the public cloud.
Cylake is a Sunnyvale, California cybersecurity company building a complete, AI-native security platform for large, heavily regulated institutions - government agencies, defense contractors, critical-infrastructure operators and financial institutions - that cannot send security data to a vendor's public cloud. Leading platforms such as CrowdStrike Falcon, Palo Alto Networks Cortex and SentinelOne Singularity detect threats by shipping telemetry to the vendor's cloud; Cylake is built to run fully on-premises or in private cloud, on a single unified data foundation rather than a patchwork of tools. It was founded at the start of 2026 by CEO Nir Zuk, who founded Palo Alto Networks in 2005 and was its CTO for two decades until August 2025; Chief Development Officer Wilson Xu, who led Palo Alto Networks' engineering team for more than a decade; and Chief Architect Ehud (Udi) Shamir, a SentinelOne co-founder. It emerged from stealth in March 2026 with a $45M seed led by Greylock, took a strategic investment from In-Q-Tel in April, and in September raised $245M through a convertible note from Lightspeed Venture Partners, Picture Capital and Redpoint Ventures, bringing total funding to $290M. Its board includes Mark McLaughlin, Jim Goetz, Asheem Chandna, Ravi Mhatre and Zuk. The product is not yet in beta: a beta is expected by the end of 2026 and general availability in 2027.
Cybersecurity📍 Sunnyvale, CAFounded 2026
Current Valuation
Private
PRIVATE
IPO Outlookprivate
Is Cylake going public?
No. Cylake is private and has not filed to go public. There is no S-1 on file.
What is Cylake's valuation in 2026?
No confirmed valuation is on record for Cylake. The roster shows funding and investors where they are public; it does not estimate a mark.
Cylake has raised $290M in total across 3 disclosed rounds, most recently a Convertible Note of $245M in Sep 2026.
Is Cylake publicly traded — can you buy Cylake stock?
No. Cylake is a private company — its shares are not listed on any exchange and there is no ticker. The routes to exposure are pre-IPO secondary marketplaces and funds (accredited investors), employee tender offers when the company runs one, and public companies with read-through exposure. QuantLogix maps every route it can verify for Cylake on its Pre-IPO Access Desk.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Company Profile
CEO
Nir Zuk
Founded
2026
HQ
Sunnyvale, CA
Employees
40+
Total Raised
$290M
Growth
Pre-product as of September 2026: working with a cohort of design partners, beta expected by the end of 2026 and general availability targeted for 2027. Grew to more than 40 employees within about six months of emerging from stealth.
Last Round
Convertible Note — $245M (Sep 2026)
IPO Status
private
Fundraising Status
Convertible Note · $245M · 1 mo ago
privateTotal raised $290M3 disclosed rounds
Growth & Valuation
Capital raised per round
Charts built from publicly disclosed funding rounds and revenue estimates. Approximate, not real-time, not investment advice.
Funding History
Round
Amount
Date
Lead Investor
Post-Money
Convertible Note
$245M
Sep 2026
—
—
Strategic Investment
—
Apr 2026
In-Q-Tel
—
Seed
$45M
Mar 2026
Greylock Partners
—
Talent Signal
Hiring trend
▶ Hiring steady
+7% vs 2026-09
Open roles
15
via ashby
Product-build share
93%
engineering, research, product, design
Trajectory
steady
heavy product build — 93% of open roles are product-building functions (engineering/research/product) — 9 of 15 open roles are engineering.
Counted from Cylake's live job board as of 2026-10-11; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.
Sovereign cybersecurity platform - designed to run entirely on-premises or in a private cloud, so security telemetry never leaves the customer's infrastructure
Single data foundation - one complete data layer across the security stack instead of fragmented point tools operating on partial data
Agentic security workflows - AI-native workflows built on that unified data foundation (in development; beta expected end of 2026)
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of recent date. Refreshed quarterly.