Co-founders are @ned and @dantheman, and there is a team of around 10 devs now. They bound themselves not to sell when the big change in the economics of the platform was implemented with Hardfork 16, in December last year. The most important change at that time was shortening the power down period from 104 weekly payments to just 13. You can find more info in the roadmap (which is a must have reading if you plan to invest here, either time or money).