Halcyon

San Diego, CA, United States

Halcyon provides a cybersecurity solution designed to protect organizations from the threat of ransomware.

Halcyon, based in San Diego, CA, United States, has 10 investors on file, among them Bain Capital Ventures, Cisco Investments and Congruent Ventures. Its latest round on record is Series A, 16 Mar 2026, of 2 rounds. Its site was last checked 12 Nov 2026: site answers.

halcyon.ai

Funding

2 rounds on record

Latest roundSeries A16 Mar 2026

Since that round8 monthsno later round on record

Time between rounds2 years 11 monthson average, over 2 rounds

Investors in its rounds86 with a VCinfo profile

Mar 2026Series ALed by Energize Capital, with Congruent Ventures, Zero Infinity Partners, Sabanci Climate Technologies and 1 other

Apr 2023Series ALed by SYN Ventures, with Dell Technologies Capital, Corner

Round sizes and total raised are on Fundup AI, our sister product for funding data.

Investors

10 investors on file

Investor	Evidence	Type
Bain Capital Ventures	Portfolio page	Venture capital
Cisco Investments	Portfolio page	Corporate VC
Congruent Ventures	Page + round	Venture capital
Corner	Page + round	Venture capital
Dell Technologies Capital	Portfolio page	Corporate VC
Dropbox Ventures	Portfolio page	Corporate VC
Evolution Equity Partners	Portfolio page	Venture capital
Sabanci Climate Technologies	Portfolio page	Corporate VC
SYN Ventures	Page + round	Venture capital
Zero Infinity Partners	Portfolio page	Venture capital

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

At a glance

Latest round: Series A, 16 Mar 2026
Investors on file: 10
Founded: 2021
Employees: 201-500
Headquarters: San Diego, CA, United States
Open roles: 8
Site: Answers
Last checked: 12 Nov 2026

Company data by Fundup AI.

What Halcyon runs on

Its vendors and tech stack, each with its source, are on StrataDB, our sister product.

See it on StrataDB

Backed by the same investors

Companies sharing two or more investors with Halcyon.

Arcade2 shared

Armis2 shared

Augtera2 shared

Clew2 shared

Docusign2 shared

Fluidstack2 shared

Get this company as JSON

GET /v1/companies/halcyon.ai
GET /v1/companies/halcyon.ai/investors
GET /v1/companies/halcyon.ai/news

API docs · Get a free key · Your API key

Raising a round?

See which investors fit your startup, ranked by what they actually back.

Check investor fit

Free account · no card

Get Halcyon and its investors as data

Look up any company's investors, or any investor's full portfolio, through one API key or MCP. A free account also opens Ask AI searches and alerts when Bain Capital Ventures adds a company.

Work email, sign-in link by email. Already have an account? Log in

Your API key Read the docs

Ask AI5 plain-English investor searches a day
Full listsEvery portfolio row and two-firm overlap
API and MCP100 REST or MCP calls a month, one key
AlertsFollow 5 investors for portfolio and fund changes

VCinfo API

$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/companies/halcyon.ai/investors

# also
GET /v1/companies/halcyon.ai
GET /v1/companies/halcyon.ai/news

The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing