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): June 22, 1998 (June 18, 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 5. Other Items 1. On June 18, 1998 Registrant reported interim operating results for the one-month and five-month periods ended May 31, 1998. This summary financial information was the first to be published following the business combination with Plutonic Resources Limited ("Plutonic") on April 30, 1998, which was accounted for as a pooling of interests. A copy of Registrant's news release is attached as Exhibit 99.3. Consolidated financial statements of Homestake Mining Company for the years ended December 31, 1997, 1996 and 1995 have been prepared to give retroactive effect to the merger with Plutonic and are attached as Exhibit 99.4. Item 7. Financial Statements, Pro Forma Financial Information and Exhibits 7(c) Exhibits 99.3 News Release, dated June 18, 1998 reporting interim results following the acquisition of Plutonic 99.4 Consolidated Financial Statements and Supplementary Data (restated to include Plutonic) Page For the Years Ended December 31, 1997, 1996 and 1995: Management's Discussion and Analysis 1 Cautionary Statement Under the Private Securities Litigation Reform Act 14 Statements of Consolidated Operations for the Years Ended December 31, 1997, 1996 and 1995 15 Consolidated Balance Sheets as of December 31, 1997 and 1996 16 Statements of Consolidated Cash Flows for the Years Ended December 31, 1997, 1996 and 1995 17 Statements of Consolidated Shareholders' Equity for the Years Ended December 31, 1997, 1996 and 1995 18 Notes to Consolidated Financial Statements 19 Report of Independent Auditors 46 Management's Responsibility for Financial Reporting 47 Quarterly Selected Data 48 Five-Year Selected Data 50 27 Restated Financial Data Schedules for the years ended December 31, 1997, 1996 and 1995 (included in electronic filing through EDGAR) 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: June 22, 1998 HOMESTAKE MINING COMPANY (Registrant) By: /s/ David W. Peat ----------------- David W. Peat Vice President and Controller