XOMA Announces Exercise of Green Shoe Option and Closes Preferred Stock Offering December 21, 2020 17:00 ET | Source: XOMA Corporation XOMA Corporation Emeryville, California, UNITED STATES EMERYVILLE, Calif., Dec. 21, 2020 (GLOBE NEWSWIRE) -- XOMA Corporation (Nasdaq: XOMA) (“XOMA” or the “Company”) today announced the closing of its previously announced underwritten registered public offering of 984,000 shares, which includes the underwriters option to purchase additional 104,000 shares of its 8.625% Series A Cumulative Perpetual Preferr...