The CEO is not going to step down from a company that he owns. If he were to step down, then he would have to pay somebody else to be the new CEO of the company. Shareholders would end up being heavily diluted to pay for the hire of a new CEO, and that would defeat the whole purpose.
OK, so start the petition. As a shareholder I'll have a look at it and decide if there is any merit. Let's get this out of the way before the PPS rises so that others can make educated decisions before it gets out of their price range.