Spencer Mateega Net Worth (Estimated)

Who is Spencer Mateega?

Spencer Mateega is a founder at AfterQuery, a startup that was part of Y Combinator's W25 batch.

About AfterQuery

AfterQuery is an applied research lab curating data solutions for frontier foundation model development. Serving every frontier AI lab.

Model inputs

• Stage: series-a
• Valuation tier: reported-valuation
• Funding input: reported raise $30.0M
• ARR input: $100.0M
• Current valuation input: $300.0M
• Peak valuation (historical): $300.0M
• Valuation note: Leftover $30M Series A matches the published Altos close. Do not lock the undisclosed later mark or invent a Series B amount.
• Research as-of: 2026-09-14
• Funding source: https://www.businesswire.com/news/home/20260409469482/en/AfterQuery-Raises-%2430-Million-Series-A-Round-at-%24300-Million-Valuation

FAQ: Spencer Mateega net worth and AfterQuery valuation

What is Spencer Mateega's net worth?

Spencer Mateega's estimated net worth / paper wealth is $28.0M (range $19.6M–$42.0M) as of 2026. Entrepreneurial Check publishes an independent model-based estimate from public company and role data.

Spencer Mateega net worth

Spencer Mateega's estimated net worth / paper wealth is $28.0M (range $19.6M–$42.0M) as of 2026. This Spencer Mateega net worth figure is estimated paper wealth, not a verified statement of assets.

How much is Spencer Mateega worth?

Spencer Mateega's estimated net worth / paper wealth is $28.0M (range $19.6M–$42.0M) as of 2026. How much Spencer Mateega is worth here means estimated paper wealth from public company and role data — not financial advice.

How rich is Spencer Mateega?

Spencer Mateega's estimated net worth / paper wealth is $28.0M (range $19.6M–$42.0M) as of 2026. “How rich is Spencer Mateega” here means estimated paper wealth from public company and role data — not verified net worth or financial advice.

Spencer Mateega fortune

Spencer Mateega's estimated net worth / paper wealth is $28.0M (range $19.6M–$42.0M) as of 2026. This Spencer Mateega fortune figure is estimated paper wealth only, not a verified statement of assets.

Spencer Mateega equity value

Spencer Mateega's estimated net worth / paper wealth is $28.0M (range $19.6M–$42.0M) as of 2026. Spencer Mateega equity value on this page is modeled paper wealth from estimated ownership — not a disclosed cap table or verified net worth.

What is AfterQuery valuation?

AfterQuery's estimated valuation on Entrepreneurial Check is $300.0M. Independent model output, not a verified appraisal or official mark.

What is AfterQuery post-money valuation?

AfterQuery's estimated valuation on Entrepreneurial Check is $300.0M. That figure is a modeled post-money mark when a public raise is available — not a verified appraisal or official mark.

What is AfterQuery funding?

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

How much did AfterQuery raise?

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

How much money did AfterQuery raise?

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

What is AfterQuery series funding?

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

What company is Spencer Mateega building?

Spencer Mateega is Co-Founder at AfterQuery, a Y Combinator-backed startup (batch W25).

What does AfterQuery do?

AfterQuery — Applied research lab curating data solutions for foundation model…

What YC batch is Spencer Mateega from?

Spencer Mateega is associated with Y Combinator batch W25.

Where is Spencer Mateega based?

Public directory data lists Spencer Mateega's region as United States of America.

What industry is Spencer Mateega in?

Spencer Mateega is listed under B2B, Infrastructure.

How big is AfterQuery?

Public data lists AfterQuery's team size as 30.

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.