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Johan Brissmyr estimated net worth profile

Johan Brissmyr net worth

Johan Brissmyr Net Worth 2026 (Estimated) · CEO at Castle · YC W16
est. wealth $15.46M

Quick answer

Johan Brissmyr's estimated net worth is $15.46M (range $10.82M – $23.18M) as of 2026. Johan Brissmyr is CEO at Castle. Castle valuation.

Johan Brissmyr is CEO at Castle (YC W16). Independent Entrepreneurial Check model estimate from public YC data.

At a glance

NameJohan Brissmyr
RoleCEO
CompanyCastle
YC batchW16
Est. company val$92.0M
Assumed ownership16.8%
Est. paper wealth / net worth$15.46M
$10.82M – $23.18M
  • Company status: Active
  • Education: Stanford University
  • Region: United States of America
  • Industries: B2B, Security
  • Team size: 20
  • Website: https://castle.io

Who is Johan Brissmyr?

Johan Brissmyr is a founder at Castle, participating in Y Combinator's Winter 2016 batch.

Highlights:

  • Stanford University
  • Google
  • Amazon

About Castle

Instantly stop automated and human-originated account takeovers, fake accounts, and any behavior that violates your platform policies.

FAQ: Johan Brissmyr net worth and Castle valuation

What is Johan Brissmyr's net worth?

Johan Brissmyr's estimated net worth is $15.46M (range $10.82M – $23.18M) as of 2026. Johan Brissmyr is CEO at Castle. Entrepreneurial Check publishes an independent model-based estimate from public company and role data. Not verified net worth, and Entrepreneurial Check is not affiliated with Y Combinator or the profiled companies.

What is Castle valuation?

Castle's estimated valuation on Entrepreneurial Check is $92.0M. That valuation, or a disclosed round when one is public, is the source for the paper-wealth estimate. Independent model output — not a verified appraisal or official mark.

What is Johan Brissmyr's role?

Johan Brissmyr is CEO at Castle, a Y Combinator-backed startup (batch W16).