(Reuters) - J.C. Penney Co Inc
Sadove, Saks' CEO since 2006, will join Penney's board once the acquisition of the luxury store chain by Hudson's Bay Co
Penney also said that Geraldine Laybourne, the founder and former chief executive officer of Oxygen Media, is stepping down from the board to work on a startup consumer technology venture for kids.
Sadove, who is credited on Wall Street with updating Saks' e-commerce, becomes the third Penney board member to come from the retail sector, in addition to Penney CEO Myron Ullman.
Many analysts faulted Penney's board in 2012 and earlier this year for not reining in former CEO Ron Johnson's aggressive plan to take Penney upmarket and ditch coupons, a plan that has led to six quarters in a row of double-digit percentage declines in same-store sales and from which Penney is still reeling.
The other retailers on the board include Leonard Roberts, retired RadioShack Corp
In August, hedge fund manager William Ackman, whose Pershing Square Capital Management was Penney's biggest shareholder, left the board, as did Steve Roth, CEO of Vornado Realty Trust
Penney shares rose 1.7 percent to $7.90 in premarket trading.
(Reporting by Phil Wahba in New York and Jessica Wohl in Chicago; Editing by Gerald E. McCormick)