Martha Stewart told a traveling companion that she knew about Sam Waksal's frantic efforts to unload shares of ImClone Systems in December 2001, according to testimony Thursday in Stewart's criminal obstruction trial. Stewart told Mariana Pasternak that she knew Waksal "was trying to sell his stock, that his daughter was trying to sell her stock, that Merrill Lynch refused to sell," Pasternak testified in federal court in Lower Manhattan. The account casts more doubt on Stewart's claim to have sold the stock under an informal stop-loss agreement with her broker. Merrill Lynch refused to allow Waksal to transfer his personal...