Twitter / Twitter
Software engineer Jack Dorsey is the Co-Founder of Twitter, and was the CEO until October 2008. Dorsey had the original idea for Twitter while still at Odeo, a podcasting startup which was a project of Obvious Corp. He is now the chairman of Twitter.
In May 2009, Dorsey announced his latest project code name Squirrel. Squirrel’s original name was later changed to Square. Square is a new mobile payment startup. It’s both an app and a piece of hardware that allows the iPhone to accept payments.
Dorsey was a student at University of Missouri - Rolla, later New York University, which he dropped out of and left his job as a programmer at a bike courier dispatch service in 1999 to move to San Francisco.
| Company | Date | Round | Size | Participants |
| Foursquare | 9/09 | Angel | $1.35M | 9 |
