Jack Dorsey Chairman after Dick Costolo replaced Williams as the CEO. On June 10, 2015, Costolo announced that he was resigning as CEO of Twitter, effective July 1, 2015. Dorsey would assume the post of Interim CEO upon Costolo's departure. He was named permanent CEO of Twitter on October 5, 2015. On the day after the controversy about Twitter's new algorithms for tweets, Dorsey responded to the trend, saying it was only a hoax. In May 2016, Dorsey announced that Twitter would not count photos and links in the 140-character limit to free up more space for text. This move was an
Stephen Bernard Dorsey Stephen Bernard Dorsey Stephen Bernard Dorsey is a serial entrepreneur who founded several companies, two of which he built into international leaders among manufacturers of word processors. He currently is the CEO of babyTEL, an Internet Telephony Service Provider. Dorsey was born in Montreal, Quebec, Canada on July 10, 1937 and is a Massachusetts Institute of Technology-trained engineer. His son Dan Dorsey, as part of his preparation to film a video about his father, made a March 2017 visit to an exhibit at The Personal Computer Museum by curator Syd Bolton that focused on MICOM. In 1967, Dorsey founded AES