Twitter was founded by Evan Williams, Noah Glass, Biz Stone, and Jack Dorsey.
Twitter started design and development efforts in March 2006.
Twitter acquired the twttr.com domain name in March 2006 and the twitter.com domain name in May 2006.
Twitter launched as Twttr in closed beta in March 2006 and as Twitter in open beta in July 2006.
Twitter incorporated as Twitter Inc. in June 2006.
Twitter raised over $1.5 billion USD in 13 funding rounds.
Twitter started trading on the NYSE in November 2013.
Twitter was/is headquartered in San Francisco, USA.
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2005 OCT Evan Williams on the technology of podcasting
2006 JUN Articles of Incorporation
2006 JUL Twttr promo.
2008 NOV Biz Stone keynote
2013 MAY The Future Has Already Arrived
2013 NOV Form S-1