Sotheby's names Tad Smith as president and CEO, effective March 31 Sotheby’s (BID) announced that its Board of Directors has concluded its CEO search and appointed Tad Smith as President and CEO, effective March 31. Smith will also join the Sotheby’s Board of Directors. He succeeds William F. Ruprecht who has served as CEO since 2000. Smith has been President and CEO of the Madison Square Garden Company (MSG) since February 2014. In this role, he oversaw the overall strategy and day-to-day operations of MSG Sports, MSG Media, and MSG Entertainment.