XOMA (US) LLC Receives Anticipated Deficiency Notice From NASDAQ

BERKELEY, Calif., Sept. 21, 2009 (GLOBE NEWSWIRE) -- XOMA Ltd. (Nasdaq:XOMA) announced today that it has received notice from the NASDAQ Stock Market that for the 30 consecutive business days preceding September 15, 2009 the bid price of XOMA’s common shares closed below the minimum $1.00 per share requirement under Marketplace Rule 4450(a)(5) for continued inclusion on the NASDAQ Global Market. This notice has no effect on the listing of XOMA’s common shares at this time, and the company’s common shares will continue to trade on the NASDAQ Global Market under the symbol “XOMA” during the period described below. XOMA intends to actively monitor the bid price for its common shares between now and March 15, 2010, and will consider available options to resolve the deficiency and regain compliance with the NASDAQ minimum bid requirement.

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