Former Yahoo! General Counsel Michael Callahan has joined as executive vice president, chief legal officer and secretary. In his new role, Callahan will oversee the company’s legal, regulatory, intellectual property, government relations, compliance, ethics and corporate governance matters. 

He will be based in the Silicon Valley office. 

During his time at Yahoo!, Callahan was an integral role in building a legal, public policy, ethics and compliance and intellectual property department that expanded threefold to more than 200 professionals under his leadership. 

Prior to his time at Yahoo!, Callahan began his career as a corporate mergers and acquisitions associate with Skadden, Arps, Slate, Meagher and Flom in Boston and San Francisco.

"During his career Mike has built and led legal, regulatory and government relations teams that facilitated Yahoo!’s rapid growth and commercial success,” said Jeffrey Frieden, Chief Executive Officer of “ is the online real estate marketplace of choice and Mike’s experience will be of great value as we continue to drive change in our industry by bringing together commercial and residential buyers and sellers via the Internet."