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): January 21, 2003 AMERICAN TOWER CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 001-14195 65-0723837 (State or Other Jurisdiction (Commission File Number) (IRS Employer of Incorporation) 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) Not Applicable (Former name or former address, if changed since last report) Item 5. Other Events. On January 23, 2003, American Tower Corporation (the "Company") issued a press release announcing the pricing of its institutional private placement of units consisting of (1) senior subordinated notes of a wholly owned subsidiary and (2) warrants to purchase Class A common stock of the Company at $0.01 price per share. In accordance with Rule 135(c) of the Securities Act of 1933, the Company hereby files as Exhibit 99.1 a copy of the Company's press release dated January 23, 2003 and hereby files as Exhibit 99.2 a copy of the Company's press release dated January 21, 2003. Item 7. Exhibits The following exhibits are filed of furnished herewith: ----------------------------------------------------------------------- Exhibit 99.1 Press Release dated January 23, 2003 ----------------------------------------------------------------------- Exhibit 99.2 Press Release dated January 21, 2003 ----------------------------------------------------------------------- - 1 - 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 hereunto duly authorized. AMERICAN TOWER CORPORATION (Registrant) Date: January 27, 2003 /s/ Bradley E. Singer ------------------------------------- Name: Bradley E. Singer Title: Chief Financial Officer and Treasurer - 2 - Exhibits -------------------------------------------------------------------- Exhibit 99.1 Press Release dated January 23, 2003 -------------------------------------------------------------------- Exhibit 99.2 Press Release dated January 21, 2003 --------------------------------------------------------------------