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 4, 1998 (June 3, 1998) AMERICAN TOWER SYSTEMS CORPORATION (Exact name of registrant as specified in its charter) Delaware 333-46025 65-0598206 (State or Other Jurisdiction (Commission (IRS Employer of Incorporation) File Number) Identification No.) 116 Huntington Avenue Boston, Massachusetts 02116 (Address of Principal Executive Offices, Zip Code) (617) 375-7500 (Registrant's telephone number, including area code) Item 5. Other Events On June 3, 1998, American Tower Systems Corporation issued the press release attached herewith as Exhibit 99. Item 7. Exhibits Press Release, dated June 3, 1998....................... Exhibit 99 2 SIGNATURES 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 hereunto duly authorized. AMERICAN TOWER SYSTEMS CORPORATION (Registrant) Date: June 4, 1998 By: /s/ Justin D. Benincasa Name: Justin D. Benincasa Title: Vice President and Corporate Controller 3