H
Halcyon
Cybersecurity business that develops tools to protect enterprise clients from ransomware
At a glance
- Founded
- 2021
- Headquarters
- Austin, United States
- Sector
- Cybersecurity
- Power Law
- Unicorn$1–10B valuation tier
Latest news
Press, funding announcements and product moves mentioning Halcyon.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed2 investors entered at this stage
- GAGula Tech Adventures
- SVSYN Ventures
Series A2 investors entered at this stage
Dell Technologies Capital- CVCorner Ventures
Series B and later7 investors entered at this stage
- CMCorner Capital Management
Bain Capital Ventures- EPEvolution Equity Partners
- HCHarmony Group Capital
Dropbox
Cisco Investments
ServiceNow
Ownership
Estimated cap table from Dealroom's shareholder data — share of equity by holder. Stakes as last recorded by Dealroom (2026). Percentages are indicative.
Some investors are hidden on this public profile. See the full cap table on Dealroom →
Source: Dealroom Talent Intelligence.
Global footprint
team presence
across markets
Market sentiment
An AI-synthesised read of the highest-engagement posts about Halcyon on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
See Halcyon on the full Dealroom platform
Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.