How much funding has Halcyon raised?

Halcyon has raised $190M in total. Its most recent round was a Series C in November 2024.

How many people work at Halcyon?

About 532, down 2% over the last 30 days, with 14 open roles.

Who are Halcyon's competitors?

Cybereason, SentinelOne, and Emsisoft are among the closest in Endpoint Security. The full competitive set, with overlap scoring, is in the platform.

Halcyon

Endpoint SecurityAustin, United Statesfounded 2021private

Halcyon is a cybersecurity company specializing in Endpoint Security, founded in 2021 and headquartered in Austin, United States. It has raised $190M in total funding, employs about 532 people, and is privately held.

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updated Aug 22, 2026

The record

What Halcyon did, dated.

Jul 2026Feature launchHalcyon Launches File Resilience (FiRe), Preventing Ransomware Encryption Before It Starts
Feb 2026Exec changeHalcyon Appoints Scott Stout as President
Sep 2025Exec changeHalcyon Appoints Veteran Security Leader Tony Spinelli as Vice President, Field CISO
Nov 2024Mega roundAnti-Ransomware Startup Halcyon Reaches Unicorn Status After $100M Series C

Momentum

46 out of 100.

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Products

What Halcyon sells.

In the platform

The other 440 data points.

Funding historyevery round, every lead investor
Headcount growthvelocity, departments, seniority
Open jobs14 live postings, role mix
Tech stackframeworks, clouds, security

Similar in Endpoint Security

FAQ

Common questions about Halcyon.

How much funding has Halcyon raised?: Halcyon has raised $190M in total. Its most recent round was a Series C in November 2024.
How many people work at Halcyon?: About 532, down 2% over the last 30 days, with 14 open roles.
Who are Halcyon's competitors?: Cybereason, SentinelOne, and Emsisoft are among the closest in Endpoint Security. The full competitive set, with overlap scoring, is in the platform.