EXHIBIT 11 HOMESTAKE MINING COMPANY AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (In thousands, except per share amounts) - ----------------------------------------------------------------------------------------------------------------------- 1997 1996 1995 - ----------------------------------------------------------------------------------------------------------------------- BASIC: Earnings: Net income (loss) $(168,879) $ 30,281 $ 30,327 =============== ============== ============= Net income (loss) applicable to basic earnings per share calculation $(168,879) $ 30,281 $ 30,327 =============== ============== ============= Weighted average number of shares outstanding 146,719 146,311 138,117 =============== ============== ============= Net income (loss) per share - basic $ (1.15) $ 0.21 $ 0.22 =============== ============== ============= DILUTED: Earnings: Net income (loss) $(168,879) $ 30,281 $ 30,327 Add: Interest relating to 5.5% convertible subordinated notes, net of tax 6,517 6,517 6,517 Amortization of issuance costs relating to 5.5% convertible subordinated notes, net of tax 443 443 443 --------------- -------------- ------------- Net income (loss) applicable to diluted earnings per share calculation $(161,919) $ 37,241 $ 37,287 =============== ============== ============= Weighted average number of shares outstanding: Common shares 146,719 146,311 138,117 Additional average shares outstanding assuming: Exercise of stock options (treasury method) 31 216 212 Conversion of 5.5% convertible subordinated notes 6,505 6,505 6,505 --------------- -------------- ------------- 153,255 153,032 144,834 =============== ============== ============= Net income (loss) per share - diluted (a) $ (1.06) $ 0.24 $ 0.26 =============== ============== ============= <FN> (a) This calculation is submitted in accordance with Regulation S-K item 601(b)(11) although it is contrary to paragraph 13 of SFAS 128 because it produced an anti-dilutive result. </FN>