SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20949 _________ 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): March 10, 2000 PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED (Exact name of registrant as specified in its charter) DELAWARE 0-29092 54-1708481 (State or Other Jurisdiction (Commission (IRS Employer Jurisdiction Incorporation) File Number) Identification No.) 1700 OLD MEADOW ROAD, SUITE 300, MCLEAN, VIRGINIA 22102 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (703) 902-2800 Item 5. On March 13, 2000, we announced that the initial purchasers have exercised their $50 million over-allotment option granted pursuant to a purchase agreement dated February 17, 2000 with respect to our 5.75% convertible subordinated debentures due February 15, 2007. The closing of the over-allotment increases the aggregate principal amount of convertible subordinated debentures to $300 million. The debentures are convertible into our common stock at a price of $49.7913 per share. Item 7. c) Exhibits Exhibit 99.1 Press Release dated March 13, 2000 issued by the Company. 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. PRIMUS TELECOMMUNICATIONS GROUP, INCORPORATED Date: March 16, 2000 By: /s/ Neil Hazard ------------------------------ Name: Neil Hazard Title: Executive Vice President, Chief Financial Officer and Chief Accounting Officer -2-