Palantir, the secretive big-data startup which sells technology to corporations, governments, law enforcement and spy agencies, filed confidential paperwork to go public. With a $20 billion valuation as a private company, should its IPO be successful, this could be the biggest Silicon Valley IPO in years. The paperwork revealing who its biggest share owners are is not yet public. But here are the founders, longest-term executives and board members who stand to gain handsomely should the company please public-market investors. Visit Business Insider's homepage for more stories.