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-company0%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 0% 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.
- Aaron CoppaFounder/CTO · FullSeamW26B2B
- Geoff SegalFounder/President · FullSeamW26B2B
- Thomas Dowling@thetomdowlingFounder/CEO · FullSeamW26B2B
- Geoff SegalFounder · TaxProperS19Real Estate and Construction · Chicago
- Thomas Dowling@thetomdowlingFounder · TaxProperS19Real Estate and Construction · Chicago
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Aaron CoppaFullSeamFounder/CTOWinter 2026B2BUnknown3—Geoff SegalFullSeam2× YCFounder/PresidentWinter 2026B2BUnknown3—Thomas DowlingFullSeam2× YCFounder/CEOWinter 2026B2BUnknown3https://x.com/thetomdowlingGeoff SegalTaxProper2× YCFounderSummer 2019Real Estate and ConstructionChicago, United States8—Thomas DowlingTaxProper2× YCFounderSummer 2019Real Estate and ConstructionChicago, United States8https://x.com/thetomdowling
Showing 1–5 of 5 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
