Global Crossing Chairman Resigns ::Gary Winnick, who made hundreds of millions of dollars selling Global Crossing stock before its collapse earlier this year, said yesterday that he was resigning as the company’s chairman. Winnick’s announcement came after two companies, Hutchison Whampoa of Hong Kong and Singapore Technologies Telemedia, recently completed their acquisition of Global Crossing’s assets for about $250 million or about 1 percent of the assets’ declared value of more than $22.4 billion.