# Clerk

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/clerk

- Industry: Software
- Headquarters: San Francisco, US
- Website: www.clerk.com
- Total disclosed funding: $134M
- Latest round: Series C (Oct 15, 2025)
- Investors on record: 10

## About

Founded in 2019 and based in California, US, by CEO Colin Sidoti and CTO Braden Sidoti, Clerk, Inc., a.k.a. Clerk operates as a provider of user management solutions, enabling developers to add high conversion sign-up and sign-in forms to their React application. In March 2023, Clerk Inc. raised USD 15 million in series A funding led by Madrona Venture Group, with participation from others, and in June 2023, Clerk Inc. raised USD 30 million in venture funding from Madrona Venture Group. 

The company provides auth and user components, B2B SaaS components, and component customization for SaaS companies with applications that need standard sign-in and sign-up features, including MFA, device management, user profiles, user switching, and more to manage their business customers. The platform offers a wide range of features, including management of passwords, email magic links, social SSO, email and SMS passcodes (OTP), web3 authentication, multifactor authentication, authentication at the edge, session management, and security.

 Clerk generates revenue from the subscription of its platform packages, which include hobby (USD 49 per month), and business (USD 199 per month). 

The company intends to use the March 2023 funding to hire product and engineering employees and expand its product offering.

## Funding rounds

- Series C, Oct 15, 2025, $50M — Menlo Ventures, Georgian
- Series B, Jan 23, 2024, $30M — CRV, Madrona Venture Group, Stripes, Andreessen Horowitz
- Series B, Jun 16, 2023, $29M — Madrona Venture Group
- Series A, Mar 22, 2023, $15M — Madrona Venture Group, Andreessen Horowitz, S28 Capital, Fathom Capital, Mango Capital
- Seed, Nov 22, 2022, $6.2M — Andreessen Horowitz, S28 Capital, Fathom Capital, South Park Commons
- Seed, Jul 2, 2021, $4M — S28 Capital, Fathom Capital

## Investors

- S28 Capital (https://capitalatlas.ai/funds/s28-capital) — Seed, Series A
- Fathom Capital (https://capitalatlas.ai/funds/fathom-capital) — Seed, Series A
- Andreessen Horowitz (https://capitalatlas.ai/funds/andreessen-horowitz) — Seed, Series A, Series B
- South Park Commons (https://capitalatlas.ai/funds/south-park-commons) — Seed
- Madrona Venture Group (https://capitalatlas.ai/funds/madrona-venture-group) — Series A, Series B
- Mango Capital (https://capitalatlas.ai/funds/mango-capital) — Series A
- CRV (https://capitalatlas.ai/funds/crv) — Series B
- Stripes (https://capitalatlas.ai/funds/stripes) — Series B
- Menlo Ventures (https://capitalatlas.ai/funds/menlo-ventures) — Series C
- Georgian — Series C