Founder Directory
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Founders2
Known for these resultsRole100%Role is parsed from founder titles in yc.db. Known for 100% of these rows — the rest have no title at all, mostly 2019–2023. Those rows stay in the result and are counted as Unknown, never as No.Bio100%Bio coverage: 100% of these founders have a bio on their YC profile. Every bio-derived facet (ex-company, school, credentials, discipline) is Unknown for the rest.Ex-company0%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 0% of these rows have at least one match.School50%School is matched from bios, case-sensitive for acronyms. 50% of these rows have at least one match.
- Andres Bran@drecmbFounder/CTO · b12 LabsS25Healthcare · San Francisco
- Zlatko Jončev@ZJoncevFounder/CEO · b12 LabsS25Healthcare · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Andres Branb12 LabsFounder/CTOSummer 2025HealthcareSan Francisco, United States3https://x.com/drecmbZlatko Jončevb12 LabsFounder/CEOSummer 2025HealthcareSan Francisco, United States3https://x.com/ZJoncev
Showing 1–2 of 2 founders
Andres Bran
Founder/CTO·b12 Labs
PRIMARY INFO
RoleFounder/CTO
Team size3
BatchSummer 2025
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Before b-12, Andres built the first AI agent to plan and make molecules in a robotic lab (750+ cites in Nature Machine Intelligence, and Best Paper at NeurIPS AI for Science), along with several other works in agents and LLMs for chemistry (1100+ citations). He was an Intern at Max Planck (Math in Science), and PhD at EPFL (AI+Chemistry). Automation is the future of chemistry, but integration and human operability is the hidden demon nobody talks about. We're fixing that at b-12.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
CredentialsPhD
DisciplineResearcherKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
b12 Labs
Making hard molecules for Pharma and Biotech
IndustryHealthcare
Websiteb12-labs.com/
Team size3
LocationSan Francisco, United States
BatchSummer 2025
Co-foundersZlatko Jončev@ZJoncev
