Top accelerator startups

14,448 startups · 29 programs

Middesk

Active · We make it easier for B2B companies to transact with one another

17signal of 100 · rising 3
  • team of 140Team size · YC's directory+11.1
  • went through YCProgram · this site+4
  • hiringHiring · Titles (titles.fru.dev), YC+2

A sum of public facts, not a judgement and not investment advice.

Competitors

Adjacent

Also from W19 in AI

All of W19

About Middesk

Middesk is the business identity platform that financial institutions, payments companies and marketplaces rely on to grow with confidence. Every business leaves a trail of signals; Formation records. Tax filings. Ownership data. Registered agents. Officers. Risk indicators. Middesk quiets that noise. We resolve it into a coherent, continuously updated view of each business, enabling teams to make clear decisions and keep moving. Trusted by the likes of Brex, Mercury, Plaid, and Affirm, Middesk helps the fastest-growing platforms in financial services establish trust with the businesses they serve. From the first onboarding decision through every change that follows. With offices in SF and NY, Middesk is backed by Sequoia Capital, Accel Partners, and Y Combinator.

YC batch
W19 · Winter 2019
Status, per YC
Active
Category
AI
Team size
140
Location
San Francisco, CA, USA
Checked
7h ago

YC tags: Fintech, SaaS, B2B

Changes seen

Team sizeOct 15, 2026

Team went from 130 to 140 people.

Middesk in W19: 194 companies, 27% AI

Middesk: questions

Which YC batch was Middesk in?

Middesk was in Y Combinator's Winter 2019 batch (W19).

Is Middesk still active?

Y Combinator lists Middesk as active.

Where is Middesk based?

Middesk lists San Francisco, CA, USA as its location on YC's directory.