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William Fairbairn estimated net worth profile

William Fairbairn Net Worth (Estimated)

Founder at Zalos · YC F25

est. wealth $18.0M

Quick answer

William Fairbairn's estimated net worth / paper wealth is $18.0M (range $12.6M–$27.0M) as of 2026.

William Fairbairn is Founder at Zalos (YC F25). Independent Entrepreneurial Check model estimate from public YC data.

At a glance

NameWilliam Fairbairn
RoleFounder
CompanyZalos
YC batchF25
Est. company val$36.0M
Assumed ownership50%
Est. paper wealth / net worth$18.0M
$12.6M – $27.0M
  • Company status: Active
  • Region: United Kingdom
  • Industries: B2B, Operations
  • Team size: 2
  • Website: https://www.zalos.ai/

Who is William Fairbairn?

William Fairbairn is a co-founder of Zalos, a Y Combinator startup focused on innovative technology solutions.

Highlights:

  • Y Combinator
  • Zalos

About Zalos

*Eliminate your Finance Operations grunt work!* ⚡Computer Agent logs into existing systems (e.g., ERP, Accounting, other CFO systems) ⚡Automates Finance processes (e.g., pricing, billing, month-end) ⚡Uploads & submits in your system (e.g., create journal entry)

*The Blockers ➜ Your Finance Systems:* Finance Operations is buried in repetitive tasks, driving: ❌ Lack finance visibility for decision-making ❌ Wasted...

Model inputs

FAQ: William Fairbairn net worth and Zalos valuation

What is William Fairbairn's net worth?

William Fairbairn's estimated net worth / paper wealth is $18.0M (range $12.6M–$27.0M) as of 2026. Entrepreneurial Check publishes an independent model-based estimate from public company and role data.

William Fairbairn net worth

William Fairbairn's estimated net worth / paper wealth is $18.0M (range $12.6M–$27.0M) as of 2026. This William Fairbairn net worth figure is estimated paper wealth, not a verified statement of assets.

How much is William Fairbairn worth?

William Fairbairn's estimated net worth / paper wealth is $18.0M (range $12.6M–$27.0M) as of 2026. How much William Fairbairn is worth here means estimated paper wealth from public company and role data — not financial advice.

How rich is William Fairbairn?

William Fairbairn's estimated net worth / paper wealth is $18.0M (range $12.6M–$27.0M) as of 2026. “How rich is William Fairbairn” here means estimated paper wealth from public company and role data — not verified net worth or financial advice.

William Fairbairn fortune

William Fairbairn's estimated net worth / paper wealth is $18.0M (range $12.6M–$27.0M) as of 2026. This William Fairbairn fortune figure is estimated paper wealth only, not a verified statement of assets.

William Fairbairn equity value

William Fairbairn's estimated net worth / paper wealth is $18.0M (range $12.6M–$27.0M) as of 2026. William Fairbairn equity value on this page is modeled paper wealth from estimated ownership — not a disclosed cap table or verified net worth.

What is Zalos valuation?

Zalos's estimated valuation on Entrepreneurial Check is $36.0M. Independent model output, not a verified appraisal or official mark.

What is Zalos post-money valuation?

Zalos's estimated valuation on Entrepreneurial Check is $36.0M. That figure is a modeled post-money mark when a public raise is available — not a verified appraisal or official mark.

What is Zalos funding?

Zalos funding, when a public raise is available, is a model input on this Entrepreneurial Check profile. How much Zalos raised is not a complete cap table — figures are estimates only.

How much did Zalos raise?

How much Zalos raised, when disclosed, informs the estimated Zalos valuation and founder paper-wealth figures on this page. Independent estimate only — not a complete cap table or financial advice.

How much money did Zalos raise?

How much money Zalos raised, when a public figure is available, is a model input for the estimated Zalos valuation on this profile. Estimates only — not a complete cap table.

What is Zalos series funding?

Zalos series funding, when a public raise is disclosed, informs the estimated Zalos valuation here. Not a complete financing history.

What company is William Fairbairn building?

William Fairbairn is Founder at Zalos, a Y Combinator-backed startup (batch F25).

What does Zalos do?

Zalos — Computer Agents for Finance tasks like reconciliation, in your system!

What YC batch is William Fairbairn from?

William Fairbairn is associated with Y Combinator batch F25.

Where is William Fairbairn based?

Public directory data lists William Fairbairn's region as United Kingdom.

What industry is William Fairbairn in?

William Fairbairn is listed under B2B, Operations.

How big is Zalos?

Public data lists Zalos's team size as 2.

What else is notable about William Fairbairn?

Y Combinator.

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.