Twitter co-founder Jack Dorsey's new app, called Sun Day, ostensibly helps users track UV exposure and vitamin D intake.

Dorsey's initial investment has gotten the new nonprofit "andOtherStuff" up and running, and he worked on some of its initial ...

Jack Dorsey’s Block Inc. joins the coveted S&P 500 on Wednesday, a symbolic milestone that puts the digital finance firm ...

What has Jack Dorsey, the founder of Twitter (now X) been up to lately? Among other things, creating experimental little ...

Jack Dorsey's Bitcoin (BTC) fintech firm Block is about to join the S&P 500. Block announced last week that effective July ...

Twitter co-founder Jack Dorsey's Block, Inc. has integrated Bitcoin into several of its products, including Square.

Jack Dorsey's Bitchat is now available on the App Store, but security researchers have questioned the app's privacy claims.

Earlier this month, Block CEO and Twitter co-founder Jack Dorsey unveiled a peer-to-peer, Bluetooth-based messaging app he ...

Jack Dorsey was “extremely disengaged” during his last months as Twitter’s CEO and provided little support on efforts to fix the company’s cybersecurity flaws, a whistleblower complaint ...

“Jack’s not hot-headed or hot-blooded,” said Nik Yakovenko, who worked at Twitter under Dorsey from 2015 to 2017. “He’s a calm person. A lot of [Silicon Valley bosses] are not calm.

Jack Dorsey is the chief executive officer of Twitter, which he co-founded in 2006. He is also the co-founder and chief executive officer of the mobile payments company Square.

Twitter co-founder and Block Head Jack Dorsey launched a new peer-to-peer messaging app over the weekend called Bitchat that runs entirely over Bluetooth. Bitchat relies on Bluetooth Low Energy mesh ...