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Grant Demaree estimated net worth profile

Grant Demaree net worth

Grant Demaree Net Worth 2026 (Estimated) · Founder at Onebrief · YC S21
est. wealth $112.88M

Quick answer

Grant Demaree's estimated net worth is $112.88M (range $79.01M – $169.31M) as of 2026. Grant Demaree is Founder at Onebrief. Onebrief valuation.

Grant Demaree is Founder at Onebrief (YC S21). Independent Entrepreneurial Check model estimate from public YC data.

At a glance

NameGrant Demaree
RoleFounder
CompanyOnebrief
YC batchS21
Est. company val$2.1B
Assumed ownership5.2%
Est. paper wealth / net worth$112.88M
$79.01M – $169.31M
  • Company status: Active
  • Region: United States of America
  • Industries: B2B
  • Team size: 200
  • Website: https://onebrief.com

Who is Grant Demaree?

Grant Demaree is a founder associated with Onebrief, a company that was part of Y Combinator's Summer 2021 batch.

Highlights:

  • Y Combinator S21
  • Onebrief

About Onebrief

Virtually everything in the military requires a plan—from everyday operations to war-time missions. With a rigorous process, many stakeholders, and rudimentary software (PowerPoint!!), planning is very slow.

Onebrief is a collaborative software designed to make military planning fast. It turns every input into reusable building blocks and automatically keeps all planning artifacts in sync.

FAQ: Grant Demaree net worth and Onebrief valuation

What is Grant Demaree's net worth?

Grant Demaree's estimated net worth is $112.88M (range $79.01M – $169.31M) as of 2026. Grant Demaree is Founder at Onebrief. 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 Onebrief valuation?

Onebrief's estimated valuation on Entrepreneurial Check is $2.1B. 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 Grant Demaree's role?

Grant Demaree is Founder at Onebrief, a Y Combinator-backed startup (batch S21).