Founder Directory
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Founders3
Known for these resultsRole33%Role is parsed from founder titles in yc.db. Known for 33% 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.School67%School is matched from bios, case-sensitive for acronyms. 67% of these rows have at least one match.
- Adair Borges@AdairLBorgesFounder · Ditto BiosciencesW26Healthcare · San Francisco
- Dennis Sun@mezarqueFounder/CEO · Ditto BiosciencesW26Healthcare · San Francisco
- Emily Weiss@emilycpierceFounder · Ditto BiosciencesW26Healthcare · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Adair BorgesDitto BiosciencesFounderWinter 2026HealthcareSan Francisco, United States3https://x.com/AdairLBorgesDennis SunDitto BiosciencesFounder/CEOWinter 2026HealthcareSan Francisco, United States3https://x.com/mezarqueEmily WeissDitto BiosciencesFounderWinter 2026HealthcareSan Francisco, United States3https://x.com/emilycpierce
Showing 1–3 of 3 founders
Dennis Sun
Founder/CEO·Ditto Biosciences
PRIMARY INFO
RoleFounder/CEO
Team size3
BatchWinter 2026
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Scientist and operator transforming natural proteins into therapies. Trained in evolutionary and developmental biology at Harvard (AB) and UC Berkeley (PhD). Previously led software teams, product development, and scientific partnerships as Chief of Staff at a $500M biotech. Now building a platform to mine proteins from viruses, ticks, and worms that will become the next blockbuster drugs for autoimmune disease.
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
Ditto BiosciencesEvolutionary intelligence for autoimmune disease
IndustryHealthcare
Websitedittobio.com/
Team size3
LocationSan Francisco, United States
BatchWinter 2026
