http://bloomberg.com/apps/news?pid=20601087&sid=a0w2Qt9sRlK8&refer=home Lehman jumped $1.50 to $15.22. Lehman spokesman Mark Lane declined to comment when contacted today by Bloomberg. Lehman is the fourth-largest U.S. securities firm. Korea Development Bank, the state-run lender, is examining options including the purchase of Lehman, Reuters quoted a spokesman as saying. Chief Executive Officer..