Zach Kirsch Net Worth (Estimated)
Founder at Fern · YC W23
Quick answer
Zach Kirsch's estimated net worth / paper wealth is $5.0M (range $3.5M–$7.5M) as of 2026.
Zach Kirsch is Founder at Fern (YC W23). Independent Entrepreneurial Check model estimate from public YC data.
At a glance
- Company status: Acquired
- Region: United States of America
- Industries: B2B, Engineering, Product and Design
- Team size: 30
- Website: https://www.buildwithfern.com
Who is Zach Kirsch?
Zach Kirsch is a founder at Fern, participating in Y Combinator's W23 batch.
About Fern
APIs underpin the internet but are still painful to work with. They are often untyped, unstandardized, and out-of-sync across multiple sources of truth.
Fern helps companies deliver SDKs and API documentation that they’re are proud to share with their customers. Since launching in 2023, we’ve been trusted by over 200 customers, including industry leaders like Square, Webflow, ElevenLabs, Auth0, and Intercom, to...
Model inputs
- Stage: acquired
- Valuation tier: fallback-acquired
- Valuation note: no_discovery_sources [scale: acquired/inactive raise amount not used as 10× input]
- Research as-of: 2026-08-04
- Funding source: https://www.buildwithfern.com/blog
FAQ: Zach Kirsch net worth and Fern valuation
What is Zach Kirsch's net worth?
Zach Kirsch's estimated net worth / paper wealth is $5.0M (range $3.5M–$7.5M) as of 2026. Entrepreneurial Check publishes an independent model-based estimate from public company and role data.
Zach Kirsch net worth
Zach Kirsch's estimated net worth / paper wealth is $5.0M (range $3.5M–$7.5M) as of 2026. This Zach Kirsch net worth figure is estimated paper wealth, not a verified statement of assets.
How much is Zach Kirsch worth?
Zach Kirsch's estimated net worth / paper wealth is $5.0M (range $3.5M–$7.5M) as of 2026. How much Zach Kirsch is worth here means estimated paper wealth from public company and role data — not financial advice.
How rich is Zach Kirsch?
Zach Kirsch's estimated net worth / paper wealth is $5.0M (range $3.5M–$7.5M) as of 2026. “How rich is Zach Kirsch” here means estimated paper wealth from public company and role data — not verified net worth or financial advice.
Zach Kirsch fortune
Zach Kirsch's estimated net worth / paper wealth is $5.0M (range $3.5M–$7.5M) as of 2026. This Zach Kirsch fortune figure is estimated paper wealth only, not a verified statement of assets.
Zach Kirsch equity value
Zach Kirsch's estimated net worth / paper wealth is $5.0M (range $3.5M–$7.5M) as of 2026. Zach Kirsch equity value on this page is modeled paper wealth from estimated ownership — not a disclosed cap table or verified net worth.
What is Fern valuation?
Fern's estimated valuation on Entrepreneurial Check is $100.0M. Independent model output, not a verified appraisal or official mark.
What is Fern post-money valuation?
Fern's estimated valuation on Entrepreneurial Check is $100.0M. That figure is a modeled post-money mark when a public raise is available — not a verified appraisal or official mark.
What is Fern funding?
Fern funding, when a public raise is available, is a model input on this Entrepreneurial Check profile. How much Fern raised is not a complete cap table — figures are estimates only.
How much did Fern raise?
How much Fern raised, when disclosed, informs the estimated Fern valuation and founder paper-wealth figures on this page. Independent estimate only — not a complete cap table or financial advice.
How much money did Fern raise?
How much money Fern raised, when a public figure is available, is a model input for the estimated Fern valuation on this profile. Estimates only — not a complete cap table.
What is Fern series funding?
Fern series funding, when a public raise is disclosed, informs the estimated Fern valuation here. Not a complete financing history.
What company is Zach Kirsch building?
Zach Kirsch is Founder at Fern, a Y Combinator-backed startup (batch W23).
What does Fern do?
Fern — Instantly offer SDKs and API Docs
What YC batch is Zach Kirsch from?
Zach Kirsch is associated with Y Combinator batch W23.
Where is Zach Kirsch based?
Public directory data lists Zach Kirsch's region as United States of America.
What industry is Zach Kirsch in?
Zach Kirsch is listed under B2B, Engineering, Product and Design.
How big is Fern?
Public data lists Fern's team size as 30.
What is Fern's status?
Fern is listed as Acquired in public company data.
Is Entrepreneurial Check affiliated with Y Combinator?
No. Entrepreneurial Check is an independent informational site and is not affiliated with, endorsed by, or sponsored by Y Combinator or the profiled companies.