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Geoff Segal

InvestorFounder

President at FullSeam · Founder at TaxProper

Greater Chicago Area

FoundedFullSeam · YCTaxProper · YC

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About

Geoff Segal co-founded TaxProper, a property tax software platform for institutional real estate investors, which was acquired by Opendoor in 2022. He is currently co-founding FullSeam, an AI platform for finance and accounting teams.

President at FullSeamYC W26

Intro paths

YC

Geoff went through Y Combinator (Winter 2026) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Brad Flora, Backing expeditions into the future — the partner who ran FullSeam's batch and knows the company first-hand. YC profile ↗

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In turn, Geoff can intro founders to FullSeam's investors below.

FullSeam's investors · 18

Agrolimen VenturesBlast.Club$5.5M checksClocktower VenturesSanta Monica · $100K – $20M checksDaft CapitalPalo Alto · $500K – $2M checksFirst Generation CapitalGeneral AdvanceKadan CapitalOurCrowdJerusalemPalm Drive CapitalNew York · $500K – $5M checksPioneerToronto, OntarioRebel FundSan Francisco · $100K – $5M checksSunshine LakeN Las VegasTranspose Platform ManagementSan FranciscoVelocity Catalyst FundChicago · $250K – $5M checksVentoTorino · $165K – $1.1M checksWadstein CapitalWefunderSan FranciscoY CombinatorSan Francisco · $500K checks · since 2026

Co-founders at FullSeam

TDThomas Dowling
Thomas DowlingCEO
ACAaron Coppa
Aaron CoppaCTO

Founder at TaxProperYC S19

Intro paths

YC

Geoff went through Y Combinator (Summer 2019) — any YC alum in your network can reach them through the YC community.

→

In turn, Geoff can intro founders to TaxProper's investors below.

TaxProper's investors · 7

Cathexis VenturesHouston · $250K – $1M checksClocktower VenturesSanta Monica · $100K – $20M checks · since 2020Era VenturesNew YorkFrialeNashville · $100K – $600K checksGlobal Founders CapitalBerlin · $1M checks · since 2020Khosla VenturesMenlo Park · $100K – $20M checks · since 2020Y CombinatorSan Francisco · $500K checks · since 2019

Co-founders at TaxProper

TDThomas Dowling
Thomas DowlingFounder

Investments

Per curated public sources.

Frequently asked questions

Who is Geoff Segal?
Geoff Segal co-founded TaxProper, a property tax software platform for institutional real estate investors, which was acquired by Opendoor in 2022. He is currently co-founding FullSeam, an AI platform for finance and accounting teams.
Where does Geoff Segal work?
Geoff Segal is President of FullSeam and Founder at TaxProper.
What companies did Geoff Segal found?
Geoff Segal founded FullSeam, TaxProper.
What companies has Geoff Segal invested in?
Investments tracked here include Ventura, Wideframe.

Founder mafias

About this profile. Compiled from public sources — FullSeam's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights