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Startup mafia · Lineage

The Square Mafia

Block/Square alumni including the founders of Faire.

15 founders 25 companies Root: Square →
Lineage of SquareSquareSquareJack DorseyJack DorseyX.comX.comTwitterTwitterCash AppCash AppBluesky Social PBCBluesky Social PBCDaniele PeritoDaniele PeritoFaireFairedepthfirstdepthfirstIan WongIan WongOpendoorOpendoorSummationSummationJim McKelveyJim McKelveyCash AppCash AppMADEMADEKeith RaboisKeith RaboisOpendoorOpendoorOpenStoreOpenStoreNathan McCauleyNathan McCauleyAnchorage DigitalAnchorage DigitalAnchorageAnchorageBrian GrassadoniaBrian GrassadoniaCash AppCash AppDavid ByttowDavid ByttowSecretSecretJeff KolovsonJeff KolovsonFaireFaireJeffrey KolovsonJeffrey KolovsonFaireFaireMarcelo CortesMarcelo CortesFaireFaireMax RhodesMax RhodesFaireFairePeter MattisPeter MattisCockroach LabsCockroach LabsSean YuSean YuBridgeBridge
Each node links through — click a founder or company to keep exploring. ↓ CSV ↓ JSON

Every founder in the Square lineage

15 founders · 25 companies

Founders who worked at or founded Square and went on to build their own companies.

J Jack Dorsey 6 founded
X.com 1999 Twitter 2006 Cash App 2013 Bluesky Social PBC 2021 Bluesky 2021 Omacom Foundation 2026
D Daniele Perito 2 founded
Faire 2017 depthfirst
I Ian Wong 2 founded
Opendoor 2014 Summation
J Jim McKelvey 2 founded
Cash App 2013 MADE
K Keith Rabois 2 founded
Opendoor 2014 OpenStore
N Nathan McCauley 2 founded
Anchorage Digital 2017 Anchorage 2017
B Brian Grassadonia 1 founded
Cash App 2013
D David Byttow 1 founded
Secret 2013
J Jeff Kolovson 1 founded
Faire 2017
J Jeffrey Kolovson 1 founded
Faire 2017
M Marcelo Cortes 1 founded
Faire 2017
M Max Rhodes 1 founded
Faire 2017
P Peter Mattis 1 founded
Cockroach Labs 2015
S Sean Yu 1 founded
Bridge 2022
Z Zach Abrams 1 founded
Bridge 2022
Explore more lineages on the mafias index, or download the full founder graph →