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Jack Dorsey

Unicorn founder

Founder at Block Inc

San Francisco, CA

FoundedBlock Inc$2.9B

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Photo, via Wikimedia Commons ↗

About

Jack Dorsey co-founded Twitter in 2006 and Square (now Block) in 2009, and is one of very few founders to have taken two companies public and served as CEO of both simultaneously. He was ousted from Twitter in 2008, returned as CEO in 2015, and left in 2021; he sold Twitter to Elon Musk in 2022. He now runs Block and funds Bitcoin and open-protocol work, including Bluesky and Nostr.

Founder at Block Inc

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In turn, Jack can intro founders to Block Inc's investors below.

Block Inc's investors · 32

A*San Francisco · $500K – $3M checks · since 2021Access Technology VenturesMill Valley · since 2021Acequia Capital (AceCap)Seattle · $100K – $5M checks · since 2021Bling CapitalMiami Beach · $1M – $5M checks · since 2021Bond Capital ManagementSan Francisco · $100K – $25M checks · since 2021China Mobile CapitalBeijing · since 2026Citi VenturesNew York · since 2012Cota CapitalSan Francisco · since 2021FINTOP CapitalNashville · since 2021First Round CapitalSan Francisco · $100K – $20M checks · since 2021firstminute capitalLondon · $1M – $3M checks · since 2021Hinge CapitalHaddonfield · $500K – $1M checks · since 2021IDG CapitalHong Kong · $1M – $100M checks · since 2026Khosla VenturesMenlo Park · $100K – $20M checks · since 2021Kleiner PerkinsMenlo Park · $500K – $15M checks · since 2021Lerer HippeauNew York · $500K – $2M checks · since 2021Mosaic VenturesLondon · $1M – $10M checks · since 2021Muzinich & Co.since 2026Notable CapitalSilicon Valley · $5M – $50M checks · since 2021Omega Venture PartnersSilicon Valley · since 2021PruVen Capital PartnersLos Altos · $100K – $10M checks · since 2021Rizvi Traverse ManagementWest Palm Beach · $25M – $1B checks · since 2021Saints CapitalSan Francisco · since 2021Sapphire VenturesAustin · $5M – $20M checks · since 2021Sequoia CapitalMenlo Park · $100K – $50M checks · since 2021Source Code CapitalBeijing · since 2026Sozo VenturesRedwood City · since 2021SV AngelSan Francisco · $150K – $20M checks · since 2021SWaN & Legend Venture PartnersLeesburg · since 2021Tuesday CapitalSan Francisco · since 2021Visa VenturesLondon · since 2011XG VenturesMenlo Park · since 2021

Co-founders at Block Inc

JMJim McKelvey
Jim McKelveyFounder
MM
Masashi MiyamotoFounder

Experience

  1. BlockCEO of Block

Podcasts & interviews

featuring Jack Dorsey

The CEO of Block, Jack Dorsey, is Ending Middle Management and Betting on a World Model

Devin Kearns | CustomAI Studio

“Fired 4,000 People” - Jack Dorsey Of Block Fires 4,000 On X

Valuetainment

Jack Dorsey's Block Cuts Nearly Half Its Staff in AI Bet

Bloomberg Podcasts

Jack Dorsey’s Block Slashes Nearly Half Its Staff in AI Bet | Bloomberg Businessweek

Bloomberg Podcasts

The Blockspace Podcast: Did Jack Dorsey Fix The Bitcoin Merchant Problem? | CoinDesk Videos

coindesk.com

Jack Dorsey - CEO of Block | Podcast | In Good Company | Norges Bank Investment Management

Norges Bank Investment Management

Frequently asked questions

Who is Jack Dorsey?
Jack Dorsey co-founded Twitter in 2006 and Square (now Block) in 2009, and is one of very few founders to have taken two companies public and served as CEO of both simultaneously. He was ousted from Twitter in 2008, returned as CEO in 2015, and left in 2021; he sold Twitter to Elon Musk in 2022. He now runs Block and funds Bitcoin and open-protocol work, including Bluesky and Nostr.
Where does Jack Dorsey work?
Jack Dorsey is Founder of Block Inc.
What companies did Jack Dorsey found?
Jack Dorsey founded Block Inc.
What podcasts and interviews feature Jack Dorsey?
Tracked appearances include "The CEO of Block, Jack Dorsey, is Ending Middle Management and Betting on a World Model", "“Fired 4,000 People” - Jack Dorsey Of Block Fires 4,000 On X", "Jack Dorsey's Block Cuts Nearly Half Its Staff in AI Bet", and 3 more.

Shared employers