Marjorie Kaufman joined activist hedge fund manager Barington Capital Group as partner and head of marketing, Ms. Kaufman said in an e-mail.
Jared L. Landaw, Barington Capital's chief operating officer, did not return a call seeking information about Ms. Kaufman's predecessor.
Ms. Kaufman was a managing director and head of marketing at Guggenheim Global Trading, a multistrategy hedge fund manager that has closed.