-------- UNITED STATES SECURITIES AND EXCHANGE COMMISSION ----------------------------- FORM 4 WASHINGTON, D.C. 20549 OMB APPROVAL -------- ----------------------------- / / CHECK THIS BOX IF NO STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OMB NUMBER: 3235-0287 LONGER SUBJECT TO EXPIRES: DECEMBER 31, 2001 SECTION 16. FORM 4 OR Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, ESTIMATED AVERAGE BURDEN FORM 5 OBLIGATIONS MAY Section 17(a) of the Public Utility Holding Company Act of 1935 or HOURS PER RESPONSE .... 0.5 CONTINUE. SEE Section 30(f) of the Investment Company Act of 1940 ----------------------------- INSTRUCTION 1(b). (Print or Type Responses) ------------------------------------------------------------------------------------------------------------------------------------ 1. Name and Address of Reporting Person* 2. Issuer Name AND Ticker or Trading Symbol 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Kluge John W. Metromedia Fiber Network, Inc. ("MFNX") ---- ---- --------------------------------------------------------------------------------------------- Officer (give Other (Last) (First) (Middle) 3. IRS or Social Security 4. Statement for ---- title ---- (specify Number of Reporting Month/Year below) below Person (Voluntary) ----------------- ------------------ c/o Metromedia Company, 215 East 67th Street March 2001 -------------------------------------------- --------------------- 7. Individual or Joint/Group Filing (Street) 5. If Amendment, (Check Applicable Line) Date of Original X Form filed by One Reporting Person (Month/Year) ___Form filed by More than One New York New York 10021 Reporting Person ------------------------------------------------------------------------------------------------------------------------------------ (City) (State) (Zip) TABLE I - NON-DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED ------------------------------------------------------------------------------------------------------------------------------------ 1. Title of Security 2. Trans- 3. Trans- 4. Securities Acquired (A) 5. Amount of 6. Owner- 7. Nature (Instr. 3) action action or Disposed of (D) Securities ship of In- Date Code (Instr. 3, 4 and 5) Beneficially Form: direct (Instr. 8) Owned at Direct Bene- (Month/ End of (D) or ficial Day/ ------------------------------------------- Month Indirect Owner- Year) (A) or (I) ship Code V Amount (D) Price (Instr. 3 (Instr. 4) (Instr. 4) and 4) ------------------------------------------------------------------------------------------------------------------------------------ Class A Common Stock 3/22/2001 A 3,727,100 A $0.1231 D ------------------------------------------------------------------------------------------------------------------------------------ " 3/22/2001 G 1,250,000 D ------------------------------------------------------------------------------------------------------------------------------------ 2,477,100 (1) D ------------------------------------------------------------------------------------------------------------------------------------ (1) In addition, as reported on Table II of this Form 4, Mr. Kluge beneficially owns options to purchase 1,863,550 shares of the Company's Class A common stock and indirectly beneficially owns 62,924,096 shares of the company's Class B common stock. ------------------------------------------------------------------------------------------------------------------------------------ Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. (Over) * If the form is filed by more than one reporting person, SEE Instruction 4(b)(v). SEC 1474 (3-99) POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED IN THIS FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALID OMB CONTROL NUMBER.

FORM 4 (CONTINUED) TABLE II - DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED (E.G., PUTS, CALLS, WARRANTS, OPTIONS, CONVERTIBLE SECURITIES) ------------------------------------------------------------------------------------------------------------------------ 1. Title of Derivative Security 2. Conver- 3. Trans- 4. Transac- 5. Number of Deriv- 6. Date Exer- (Instr. 3) sion or action tion Code ative Securities Ac- cisable and Ex- Exercise Date (Instr. 8) quired (A) or Dis- piration Date Price of (Month/ posed of (D) (Month/Day/ Deriv- Day/ (Instr. 3, 4, and 5) Year) ative Year) Security -------------------- Date Expira- -------------------------------------- Exer- tion cisable Date Code V (A) (D) ------------------------------------------------------------------------------------------------------------------------ Options to Buy $.1231 3/22/2001 M 3,727,100 8/1/98 8/1/2007 ------------------------------------------------------------------------------------------------------------------------ Options to Buy ------------------------------------------------------------------------------------------------------------------------ Class B Common Stock ------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ 7. Title and Amount of Under- 8. Price 9. Number 10. Owner- 11. Nature lying Securities of of Deriv- ship of In- (Instr. 3 and 4) Deriv- ative Form direct ative Securi- of De- Bene- Secur- ties rivative ficial ity Bene- Secu- Own- (Instr. ficially rity: ership 5) Owned Direct (Instr. 4) at End (D) or Amount or of Indi- Title Number of Month rect (I) Shares (Instr. 4) (Instr. 4) ------------------------------------------------------------------------------------------ Class A Common Stock D ------------------------------------------------------------------------------------------ Class A Common Stock 700,000 D ------------------------------------------------------------------------------------------ Class A Common Stock 62,924,096 I* ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------ Explanation of Responses: * Owned by Metromedia Company, of which Mr. Kluge is a general partner. /s/ John W. Kluge 4/9/01 ----------------------------------- ----------- **Intentional misstatements or omissions of facts constitute **Signature of Reporting Person Date Federal Criminal Violations. SEE 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, SEE Instruction 6 for procedure. Potential persons who are to respond to the collection of information contained John W. Kluge in this form are not required to respond unless the form displays a currently valid OMB Number. Page 2 SEC 1474 (3-99)

METROMEDIA FIBER NETWORK INC 4