UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15 (d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 1998 (April 30, 1998) HOMESTAKE MINING COMPANY (Exact name of Registrant as specified in its charter) Delaware 1-8736 94-2934609 (State or other (Commission (I.R.S. Employer jurisdiction of File Number) Identification Number) incorporation) 650 California Street, San Francisco, California 94108-2788 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (415) 981-8150 http://www.homestake.com Item 2. Acquisition of Plutonic Resources Limited On April 30, 1998 Homestake consummated the acquisition of Plutonic, a publicly traded Australian gold producer, by an exchange of common stock for common stock. Shareholders of both companies approved the combination at separate meetings held in Sydney, Australia and San Francisco on April 29, 1998. As a result of the acquisition, Homestake is now the second largest gold producer in Australia. Total consideration for the acquisition was 64.4 million Homestake common shares, including 63.9 million shares in exchange for all Plutonic common shares outstanding based on an exchange ratio of .34 Homestake common shares for each fully-paid Plutonic common share, and .5 million Homestake common shares for the Plutonic partly paid shares and options outstanding. The business combination with Plutonic has been accounted for as a pooling of interests. A copy of the Registrant's April 30, 1998 news release is attached as Exhibit 99.1. Item 7. Financial Statements, Pro Forma Financial Information and Exhibits 7(c) Exhibits 99.1 News Release, dated April 30, 1998 announcing that the Registrant had completed the acquisition of Plutonic Resources Limited. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Dated: May 11, 1998 HOMESTAKE MINING COMPANY (Registrant) By /s/ David W. Peat ------------------ David W. Peat Vice President and Controller