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 18, 1999 (June 18, 1999) 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, 1999 Registrant reported interim operating results for the two-month and five-month periods ended May 31, 1999. This summary financial information, which is the first to be published following the business combination with Argentina Gold Corp. on April 29, 1999, includes the first thirty days of combined operations. The merger agreement between Homestake and Argentina Gold and pooling-of-interests accounting require publishing results for at least thirty days of combined operations. A copy of Registrant's news release is attached as Exhibit 99.2. 2. The Bylaws of the Registrant have been amended to decrease the number of Directors to eleven. A copy of the Registrant's Bylaws (as amended through May 11, 1999) is attached as Exhibit 3.1. Item 7. Financial Statements and Exhibits (c) Exhibits Exhibit 3.1 Bylaws (as amended through May 11, 1999) of Homestake Mining Company. Exhibit 99.2 News release, dated June 18, 1999 reporting interim results following the business combination with Argentina Gold Corp. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Dated: June 18, 1999 HOMESTAKE MINING COMPANY (Registrant) By: /s/ David W. Peat ------------------ David W. Peat Vice President, Finance and Chief Financial Officer