Beigene Ltd., of Beijing, said it plans to sell $125 million of its American depositary shares (ADSs), which each represent 13 of its ordinary shares. Underwriters have a 30-day option to purchase up to an additional $18.75 million of ADSs. Morgan Stanley, Goldman Sachs & Co. LLC and Cowen are acting as joint book-running managers. Shares of Beigene (NASDAQ:BGNE) closed down 6 percent to $72.64 on Thursday.