Following a search that lasted nearly four months, Twitter announced this morning that Jack Dorsey is now the company’s permanent CEO. Dorsey had been serving as interim chief exec since former CEO Dick Costolo stepped aside in June. Adam Bain, Twitter’s head of revenue, will become the new chief operating officer. According to the SEC filing, Dorsey will continue as CEO of Square, the payments company he launched in 2009. It was earlier reported that Dorsey might have to choose between the two companies. “Dorsey, who owns a significant stake in Twitter, won’t get paid to run the company,” reports Re/code.