ENTA’s fully-diluted* share count at 12/31/17=21.9M. This figure consists of: 19.2M basic shares on the 12/31/17 balance sheet (https://www.sec.gov/Archives/edgar/data/1177648/000156459018001764/enta-10q_20171231.htm#CONSOLIDATED_BALANCE_SHEETS );and 2.7M options outstanding (whether or not exercisable) (ibid, page 13). *Non-treasury method.