Middesk, Inc.

Middesk is a business identity platform founded in 2018 by Kyle Mack and Kurt Ruppel, headquartered in San Francisco, California. The company provides software that enables financial institutions and fintech companies to verify the identity of businesses, automate Know Your Business (KYB) compliance workflows, and monitor business entities on an ongoing basis.

The platform aggregates data from government registries, Secretary of State filings, sanctions lists, and other public sources to help customers assess the legitimacy and risk profile of business clients. Primary use cases include business account opening, lending underwriting, and regulatory compliance for banks, credit unions, and fintech lenders. Customers have included companies in the payments, lending, and banking-as-a-service sectors.

Middesk raised a $16 million Series A round in 2021 led by Sequoia Capital, following an earlier seed round. The company subsequently raised additional capital, bringing total disclosed funding to approximately $42 million. Middesk is a graduate of Y Combinator's Winter 2019 batch.