Founder Directory
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Founders110
Known for these resultsRole38%Role is parsed from founder titles in yc.db. Known for 38% 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.Bio80%Bio coverage: 80% 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-company15%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 15% of these rows have at least one match.School23%School is matched from bios, case-sensitive for acronyms. 23% of these rows have at least one match.
- Lewis BlackwoodFounder/CTO · RexS26B2B · San Francisco
- Merlin Kafka@merlinkafkaFounder/CEO · RexS26B2B · San Francisco
- Arlen AbrahamFounder · Cascade SpaceX25Industrials · San Francisco
- Sergio Oliveira Bergmann@SergioOBergmannFounder · MesmerX25B2B · Berlin
- James HeFounder/CEO · Artificial SocietiesW25B2B · London
- Patrick SharpeFounder/CPO · Artificial SocietiesW25B2B · London
- Tomer KullaFounder/CTO · ConntourW25Industrials · Tel Aviv
- Lin Ling@linnyismsFounder/CEO · ModusS24B2B · Austin
- Anish BhardwajFounder/CTO · VendraS24Industrials · San Francisco
- Shan Mohta@shanmohtaFounder/CEO · VendraS24Industrials · San Francisco
- Philip AbelFounder/CTO · ClevaW24Fintech · Lagos
- Marcel Tan@Marcel7anFounder/CEO · TuskW24B2B · San Francisco
- Molly AbbottFounder · ConstructableS23Real Estate and Construction · Santa Barbara
- Sam O'Keefe@samokFounder · FlexS23Fintech
- Jonathan Tiret@jtiretFounder · UpstreamS23B2B · Paris
- Kaushik SrinivasanFounder · compliant-llmW23B2B · San Francisco
- Neha Nupoor@nupoor_nehaFounder · compliant-llmW23B2B · San Francisco
- Andy Day@adayNUFounder · FabiusW23B2B · San Francisco
- Neil MadsenFounder · FabiusW23B2B · San Francisco
- Alex Lee@AlexLee611Founder · TruewindW23B2B · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Lewis BlackwoodRexFounder/CTOSummer 2026B2BSan Francisco, United States2—Merlin KafkaRexFounder/CEOSummer 2026B2BSan Francisco, United States2https://x.com/merlinkafkaArlen AbrahamCascade SpaceFounderSpring 2025IndustrialsSan Francisco, United States7—Sergio Oliveira BergmannMesmerFounderSpring 2025B2BBerlin, Germany7https://x.com/SergioOBergmannJames HeArtificial SocietiesFounder/CEOWinter 2025B2BLondon, United Kingdom12—Patrick SharpeArtificial SocietiesFounder/CPOWinter 2025B2BLondon, United Kingdom12—Tomer KullaConntourFounder/CTOWinter 2025IndustrialsTel Aviv, Israel15—Lin LingModusFounder/CEOSummer 2024B2BAustin, United States3https://x.com/linnyismsAnish BhardwajVendraFounder/CTOSummer 2024IndustrialsSan Francisco, United States7—Shan MohtaVendraFounder/CEOSummer 2024IndustrialsSan Francisco, United States7https://x.com/shanmohtaPhilip AbelClevaFounder/CTOWinter 2024FintechLagos, Nigeria30—Marcel TanTuskFounder/CEOWinter 2024B2BSan Francisco, United States4https://x.com/Marcel7anMolly AbbottConstructableFounderSummer 2023Real Estate and ConstructionSanta Barbara, United States6—Sam O'KeefeFlex2× YCFounderSummer 2023FintechUnknown8https://x.com/samokJonathan TiretUpstreamFounderSummer 2023B2BParis, France7https://x.com/jtiretKaushik Srinivasancompliant-llmFounderWinter 2023B2BSan Francisco, United States3—Neha Nupoorcompliant-llmFounderWinter 2023B2BSan Francisco, United States3https://x.com/nupoor_nehaAndy DayFabiusFounderWinter 2023B2BSan Francisco, United States2https://x.com/adayNUNeil MadsenFabiusFounderWinter 2023B2BSan Francisco, United States2—Alex LeeTruewindFounderWinter 2023B2BSan Francisco, United States30https://x.com/AlexLee611
Showing 1–20 of 110 founders
Sam O'Keefe
Founder·Flex
PRIMARY INFO
RoleFounder· not in title
Team size8
BatchSummer 2023
LocationRemote
Company statusActive
StageGrowth
BIO
Sam is a cofounder at Flex. Her previous roles include product leadership at a growth stage fintech (Unit21), EIR in Area120, and global head of startup programs at Google, and an editor at TechCrunch. Sam has also been a writer and producer of South of Market, the Musical.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
Credentialsnone mentioned
Disciplinenot detectedKeyword match from the bio text, not a classifier.
TRACK RECORD
2× YC founder
- S12MicroEvalInactive
- S23FlexActive · this entry
COMPANY CONTEXT
Flex
Stripe for HSA/FSA payments
Co-foundersMiguel Toledo
