Uber CEO Travis Kalanick

Kalanick, 43, a director at the ride-hailing company, sold 20.3 million shares worth about $547 million that were held in a trust, according to a regulatory filing on Friday

Battles among Uber stakeholders have spilled into public view; conflicts risk paralysing the firm

Will 40-year-old Kalanick be able to make the spectacular comeback that Jobs managed in 1997?

Five of the company's major investors wrote to Kalanick, asking him to step down

Company heading for a major rejig

Start-ups can't give short shrift to corporate governance

Every new Uber revelation ignited a massive campaign against the company on Twitter and Facebook