Every new California business filing, every dayBlossomHill Therapeutics
Jason Keyes, Principal
BlossomHill Therapeutics is a precision medicine biotechnology company based in San Diego, California, focused on developing cancer therapies. The company's website describes it as 'The Next Leap Forward in Precision Medicine' and features a clinical-stage pipeline including a first-in-class macrocyclic omni-EGFR inhibitor for non-small cell lung cancer. The site lists officers such as Jason Keyes, Carl Gordon, and Timothy Stubbs, who match the LLC filing's principals, and the business address at 10255 Science Center Drive aligns with the filing record.
Filed March 11, 2025 · San Diego, CA · San Diego County
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California Secretary of State (bizfile Online) · Entity 3171605 · Retrieved July 26, 2026
About BlossomHill Therapeutics
BLOSSOMHILL THERAPEUTICS, INC. filed in California on March 11, 2025, as a precision oncology biotechnology company. The corporation lists eight principals, including Jason Keyes, Bihua Chen, and Carl Gordon. Its domain was registered nearly five years before filing, on May 13, 2020, through GoDaddy, and the modern website uses All in One SEO and matches the filing name and address. No annual report or EIN on file yet. We estimate revenue between $10 million and $50 million and 26 to 100 employees, operating from a brick-and-mortar location.
- Filed as a corporation with eight principals.
- Domain registered 1,763 days before the filing date.
- Website uses All in One SEO and has confirmed identity.
- No annual report or EIN on file yet.
- We estimate $10M-$50M revenue and 26-100 employees.
- Brick-and-mortar footprint.
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 1 new businesses registered in San Diego in March 2025, and the only biotechnology 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.
Officers / Authorized Persons
Frequently Asked Questions
When was BlossomHill Therapeutics registered?
BlossomHill Therapeutics was registered as Corp on March 11, 2025 in California.
Where is BlossomHill Therapeutics located?
BlossomHill Therapeutics is based in San Diego, CA, 92121-1179, in San Diego County.
What type of business is BlossomHill Therapeutics?
BlossomHill Therapeutics is classified as a biotechnology business (precision oncology).
Does BlossomHill Therapeutics have an EIN on file?
No EIN was found on file for BlossomHill Therapeutics at the time of registration.
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