Every new California business filing, every dayO'Sullivan Law
Jesse O'Sullivan, Registered Agent
O'Sullivan Law, P.C. is a professional law corporation, likely operating as The Law Office of Ciarán O'Sullivan in San Francisco, focusing on trusts and estates litigation. The website provides a physical address and contact details, confirming it as an active legal practice.
Filed February 4, 2026 · San Diego, CA · San Diego County
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California Secretary of State (bizfile Online) · Entity B20260061002 · Retrieved May 14, 2026
About O'Sullivan Law
O'Sullivan Law, P.C. filed in California on February 4, 2026, as a corporation in the law firm category specializing in trusts and estates litigation. The owner and registered agent is Jesse O'Sullivan, who filed personally. The domain was registered 5,847 days before filing, on February 1, 2010, through GoDaddy. The modern website was built with Divi. We estimate annual revenue between $100,000 and $1 million and 1-5 employees. First seen 99 days after filing. No annual report or EIN on file yet.
- Filed in California on February 4, 2026, as a law firm specializing in trusts and estates litigation.
- Owner Jesse O'Sullivan filed personally as registered agent.
- Domain registered 5,847 days before filing, on February 1, 2010, via GoDaddy.
- Modern website built with Divi.
- We estimate revenue between $100,000 and $1 million and 1-5 employees.
- First seen 99 days after filing.
- 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 162 new businesses registered in San Diego in February 2026, one of 3 law firm businesses.
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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 O'Sullivan Law registered?
O'Sullivan Law was registered as Corp on February 4, 2026 in California.
Where is O'Sullivan Law located?
O'Sullivan Law is based in San Diego, CA, 92116, in San Diego County.
What type of business is O'Sullivan Law?
O'Sullivan Law is classified as a law firm business (trusts and estates litigation).
Does O'Sullivan Law have an EIN on file?
No EIN was found on file for O'Sullivan Law at the time of registration.
Who Sells to This Business
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