Every new California business filing, every day01 Advisors
Richard Costolo, Registered Agent
01 Advisors is a venture capital firm based in San Francisco, California, with an additional office in New York City.
Filed March 4, 2026 · San Francisco, CA · San Francisco County
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California Secretary of State (bizfile Online) · Entity B20260108933 · Retrieved May 13, 2026
About 01 Advisors
01 Advisors 04 GP LLC filed in California on March 6, 2026, and is based in San Francisco, 94111. The company operates in venture capital and investment advisory. Richard Costolo filed personally as the registered agent. Its domain was registered on March 16, 2003, over 23 years before filing, through Tucows Domains, and the site uses Squarespace. The website is modern. We estimate revenue between $10 million and $50 million and 6 to 25 employees. No annual report or EIN on file yet.
- Domain registered 8,389 days before filing, indicating a very long-established online presence.
- Filed in California, principal location in San Francisco.
- Owner Richard Costolo filed personally as registered agent.
- Website built with Squarespace, assessed as modern.
- We estimate revenue of $10M-$50M and 6-25 employees.
- No annual report or EIN on file yet.
Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 23, 2026.
One of 421 new businesses registered in San Francisco in March 2026, and the only venture capital & investment advisory business registered there that month.
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Filing Details
Verified Business Profile
Contact Information
Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Frequently Asked Questions
When was 01 Advisors registered?
01 Advisors was registered as LLC on March 4, 2026 in California.
Where is 01 Advisors located?
01 Advisors is based in San Francisco, CA, 94111, in San Francisco County.
What type of business is 01 Advisors?
01 Advisors is classified as a venture capital & investment advisory business (venture capital).
Does 01 Advisors have an EIN on file?
No EIN was found on file for 01 Advisors at the time of registration.
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