Founder Directory
Built by Keitoto
Founders6
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-company33%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 33% 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.
- Sadia Saifuddin@sadiasaifuddin1Founder/CPO · Risely AIS25Education · San Francisco
- Sahil Hasan@itsahil85Founder · Dots 💸S21Fintech · San Francisco
- Billy ThalheimerFounder · REGENTW21Industrials · North Kingstown
- Michael KlinkerFounder · REGENTW21Industrials · North Kingstown
- Tom Harari@tomharariFounder/CEO · CleanlyW15Consumer · New York
- Caroline Cochran@caorilneFounder · OkloS14Industrials · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Sadia SaifuddinRisely AIFounder/CPOSummer 2025EducationSan Francisco, United States8https://x.com/sadiasaifuddin1Sahil HasanDots 💸FounderSummer 2021FintechSan Francisco, United States10https://x.com/itsahil85Billy ThalheimerREGENTFounderWinter 2021IndustrialsNorth Kingstown, United States40—Michael KlinkerREGENTFounderWinter 2021IndustrialsNorth Kingstown, United States40—Tom HarariCleanlyFounder/CEOWinter 2015ConsumerNew York, United States40https://x.com/tomharariCaroline CochranOkloFounderSummer 2014IndustrialsSan Francisco, United States50https://x.com/caorilne
Showing 1–6 of 6 founders
Billy Thalheimer
Founder·REGENT
PRIMARY INFO
RoleFounder· not in title
Team size40
BatchWinter 2021
LocationNorth Kingstown, United States
Company statusActive
StageEarly
BIO
Billy is an aerospace business leader and multidisciplinary engineer with expertise spanning aviation entrepreneurship and novel aircraft development. At Aurora Flight Sciences, Billy led execution and BD for next-gen aircraft programs. Holding a BS/MS from MIT in aerospace engineering, he also led flight physics modeling for Boeing's electric air taxi, and authored their custom aircraft design code. As a passionate aerospace nerd, Billy spends his free time competing as an aerobatic pilot.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
Credentialsnone mentioned
DisciplineEngineerKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
REGENTAll-electric seagliders for fast, affordable regional transportation
IndustryIndustrials
Websiteregentcraft.com
Team size40
LocationNorth Kingstown, United States
BatchWinter 2021
Co-foundersMichael Klinker
