Founder Directory
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Founders5
Known for these resultsRole60%Role is parsed from founder titles in yc.db. Known for 60% 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-company100%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 100% of these rows have at least one match.School40%School is matched from bios, case-sensitive for acronyms. 40% of these rows have at least one match.
- Rhys Sullivan@RhysSullivanFounder · ExecutorS26B2B · San Francisco
- Christopher Burns@burnedchrisFounder/CEO · InthX26B2B · San Francisco
- Ethan Shea@ethsheaFounder/CTO · RegbaseX26B2B · New York
- Rob Pruzan@RobKnight__Founder/CEO · ZenbuX26B2B · San Francisco
- Fernando Rojo@fernandotherojoFounder · BasementW19Consumer · New York
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Rhys SullivanExecutorFounderSummer 2026B2BSan Francisco, United States1https://x.com/RhysSullivanChristopher BurnsInthFounder/CEOSpring 2026B2BSan Francisco, United States3https://x.com/burnedchrisEthan SheaRegbaseFounder/CTOSpring 2026B2BNew York, United States3https://x.com/ethsheaRob PruzanZenbuFounder/CEOSpring 2026B2BSan Francisco, United States1https://x.com/RobKnight__Fernando RojoBasementFounderWinter 2019ConsumerNew York, United States2https://x.com/fernandotherojo
Showing 1–5 of 5 founders
Natalie Aresta-Katz
Founder/CEO·Regbase
PRIMARY INFO
RoleFounder/CEO
Team size3
BatchSpring 2026
LocationNew York, United States
Company statusActive
StageEarly
BIO
Prior to Regbase, Natalie was the founder of Saponify. Between the ages of 16 and 22, Natalie sold over $1M of soap base on Amazon. She was the first sustainable business major at NYU Stern, and has an MBA from Columbia. Natalie also spent 3 years as a regulatory researcher at the law firm Paul, Weiss, which is where she got the idea for Regbase.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
CredentialsMBA
DisciplineResearcherKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
Regbase
Automating Corporate Compliance, Worldwide
Co-foundersEthan Shea@ethshea
