Yahoo continues its efforts to restructure, shedding its board chairman and three members.

HP CEO Leo Apotheker and three directors broke company rules by participating in the nomination of five new board members, according to a report by the Wall Street Journal.

Four Hewlett-Packard board members who reportedly played a central role in the company's decision about whether to replace CEO Mark Hurd are themselves being replaced, HP announced Thursday after U.S. financial markets closed.

Yahoo has reached an agreement to end a proxy fight with investor Carl Icahn, who will take a seat on the company's board after the annual stockholders' meeting, Yahoo said Monday.