Anthropic's IPO filing on Nasdaq under ticker ANT reveals that seven individuals, including CEO Dario Amodei, will control 50.1% of the company's voting power through a single Class F common stock owned by Founder LLC. This structure means public Class A shareholders cannot swing a stockholder vote or director election. The filing names Dario Amodei, Daniela Amodei, Tom Brown, Jack Clark, Jared Kaplan, Sam McCandlish, and Christopher Olah as members of Founder LLC, with a majority of its members controlling the Class F share's vote.