Founder Directory
Built by Keitoto
Founders250
Known for these resultsRole36%Role is parsed from founder titles in yc.db. Known for 36% 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-company17%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 17% of these rows have at least one match.School24%School is matched from bios, case-sensitive for acronyms. 24% of these rows have at least one match.
- Edmond NiuFounder · AtliaS26Real Estate and Construction · San Francisco
- Shaan Yadav@TheShaanShaanFounder · AtliaS26Real Estate and Construction · San Francisco
- Erik PetersonFounder/CTO · RealPactS26Real Estate and Construction · San Francisco
- Ranvir Deshmukh@ranvirdeshmukh_Founder/CEO · RealPactS26Real Estate and Construction · San Francisco
- Akshay TrikhaFounder/CEO · MadroneX26Industrials · San Francisco
- Ana Yoon Faria de Lima@anayflimaFounder · PavootX26B2B · San Francisco
- Gohar Tamrazyan@gohar_tamrazyanFounder · PavootX26B2B · San Francisco
- Arseniy Shishaev@arseniyswishFounder/CTO · SuperlogX26B2B · San Francisco
- Nicolò Magnante@nicolomagnanteFounder/CEO · SuperlogX26B2B · San Francisco
- Jan SahagunFounder/COO · TrellisX26B2B · San Francisco
- Lodovico BenvenutiFounder/CEO · TrellisX26B2B · San Francisco
- Clement BarthesFounder/CEO · CongruentW26Industrials · San Francisco
- Aaron CoppaFounder/CTO · FullSeamW26B2B
- Geoff SegalFounder/President · FullSeamW26B2B
- Thomas Dowling@thetomdowlingFounder/CEO · FullSeamW26B2B
- Skyler Chan@skyler_chan_Founder/CEO · Galactic Resource Utilization Space, Inc. (GRU Space)W26Industrials · Los Angeles
- Oscar AdamssonFounder/CPO · StiltaW26B2B · Stockholm
- Oskar Block@oskarblockFounder/CEO · StiltaW26B2B · Stockholm
- Petrus WernerFounder/CTO · StiltaW26B2B · Stockholm
- Tobias Estreen@estreenxFounder · StiltaW26B2B · Stockholm
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Edmond NiuAtliaFounderSummer 2026Real Estate and ConstructionSan Francisco, United States2—Shaan YadavAtliaFounderSummer 2026Real Estate and ConstructionSan Francisco, United States2https://x.com/TheShaanShaanErik PetersonRealPactFounder/CTOSummer 2026Real Estate and ConstructionSan Francisco, United States2—Ranvir DeshmukhRealPactFounder/CEOSummer 2026Real Estate and ConstructionSan Francisco, United States2https://x.com/ranvirdeshmukh_Akshay TrikhaMadroneFounder/CEOSpring 2026IndustrialsSan Francisco, United States2—Ana Yoon Faria de LimaPavootFounderSpring 2026B2BSan Francisco, United States0https://x.com/anayflimaGohar TamrazyanPavootFounderSpring 2026B2BSan Francisco, United States0https://x.com/gohar_tamrazyanArseniy ShishaevSuperlogFounder/CTOSpring 2026B2BSan Francisco, United States2https://x.com/arseniyswishNicolò MagnanteSuperlogFounder/CEOSpring 2026B2BSan Francisco, United States2https://x.com/nicolomagnanteJan SahagunTrellisFounder/COOSpring 2026B2BSan Francisco, United States5—Lodovico BenvenutiTrellisFounder/CEOSpring 2026B2BSan Francisco, United States5—Clement BarthesCongruentFounder/CEOWinter 2026IndustrialsSan Francisco, United States2—Aaron CoppaFullSeamFounder/CTOWinter 2026B2BUnknown3—Geoff SegalFullSeam2× YCFounder/PresidentWinter 2026B2BUnknown3—Thomas DowlingFullSeam2× YCFounder/CEOWinter 2026B2BUnknown3https://x.com/thetomdowlingSkyler ChanGalactic Resource Utilization Space, Inc. (GRU Space)Founder/CEOWinter 2026IndustrialsLos Angeles, United States5https://x.com/skyler_chan_Oscar AdamssonStiltaFounder/CPOWinter 2026B2BStockholm, Sweden4—Oskar BlockStiltaFounder/CEOWinter 2026B2BStockholm, Sweden4https://x.com/oskarblockPetrus WernerStiltaFounder/CTOWinter 2026B2BStockholm, Sweden4—Tobias EstreenStiltaFounderWinter 2026B2BStockholm, Sweden4https://x.com/estreenx
Showing 1–20 of 250 founders
Geoff Segal
Founder·TaxProper
PRIMARY INFO
RoleFounder· not in title
Team size8
BatchSummer 2019
LocationChicago, United States
Company statusAcquired
StageEarly
BIO
Geoff is the co-founder of FullSeam (W26), the AI employee for finance and accounting teams. He previously co-founded TaxProper (S19), the leading property tax software for institutional real estate investors, which successfully exited to Opendoor (NASDAQ: OPEN) in 2022.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
No notable employer or school mentioned in the bio.
Credentialsnone mentioned
DisciplineEngineerKeyword match from the bio text, not a classifier.
TRACK RECORD
2× YC founderSerial founder · self-declaredExit mentioned in bio
- S19TaxProperAcquired · this entry
- W26FullSeamActive
COMPANY CONTEXT
TaxProperTaxProper helps large Real Estate owners manage their property taxes.
IndustryReal Estate and Construction
Websitetaxproper.com/
Team size8
X—
LocationChicago, United States
BatchSummer 2019
Co-foundersThomas Dowling@thetomdowling
Also founded · 1 more YC company
FullSeamActiveWinter 2026AI agents for corporate accounting teams
B2BUnknown3Open this entry
