Jack Dorsey

OurMine, the group of hackers behind recent high-profile account thefts, temporarily took over Twitter CEO Jack Dorsey's Twitter account, tweeting and posting a Vine clip.

Twitter's stock has been in steep decline for majority of the past year. The plunge didn't stop – quite the opposite – when co-founder Jack ......

New Twitter CEO Jck Dorsey has given a third of his Twitter shares back to the company's employees, placing them directly into the employee equity pool.

According to Re/code, new Twitter CEO Jack Dorsey is preparing to make company-wide layoffs this week, his first major decision since being named permanently to the position.

According to sources, Twitter is building a new product that will allow users Tweet messages that are longer than 140 characters.

Twitter's current interim CEO and co-founder Jack Dorsey will be named permanent CEO later this week, according to new reports.