-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, VQFHfnPG+nLasGWl77dWLu+fxGOFyOQQdLDF4yH2NDAiUHldwfZJ+kXxUc4dUfBm dF0rJ5OZXqZhNApmvS8NDA== 0000950123-05-008633.txt : 20050719 0000950123-05-008633.hdr.sgml : 20050719 20050719100710 ACCESSION NUMBER: 0000950123-05-008633 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20050719 DATE AS OF CHANGE: 20050719 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: IMPSAT FIBER NETWORKS INC CENTRAL INDEX KEY: 0001022329 STANDARD INDUSTRIAL CLASSIFICATION: COMMUNICATION SERVICES, NEC [4899] IRS NUMBER: 521910372 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-60701 FILM NUMBER: 05960672 BUSINESS ADDRESS: STREET 1: ELVIRA RAWSON DE DELLEPIANE 150 STREET 2: PISO 8 CITY: BUENOS AIRES STATE: C1 ZIP: C1107BCA BUSINESS PHONE: 54115170000 MAIL ADDRESS: STREET 1: ELVIRA RAWSON DE DELLEPIANE 150 STREET 2: PISO 8 CITY: BUENOS AIRES STATE: C1 ZIP: C1107BCA FORMER COMPANY: FORMER CONFORMED NAME: IMPSAT CORP DATE OF NAME CHANGE: 19960905 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: UBS AG CENTRAL INDEX KEY: 0001114446 STANDARD INDUSTRIAL CLASSIFICATION: NATIONAL COMMERCIAL BANKS [6021] IRS NUMBER: 000000000 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: BAHNHOFSTRASSE 45 STREET 2: P O BOX CH 8098 CITY: ZURICH STATE: V8 ZIP: - BUSINESS PHONE: 41-1-234-4100 MAIL ADDRESS: STREET 1: BAHNHOFSTRASSE 45 STREET 2: P O BOX CH 8098 CITY: ZURICH STATE: V8 ZIP: - SC 13G/A 1 y10863a1sc13gza.txt AMENDMENT #1 TO SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Information to be included in Statements filed pursuant to Rules 13d-1(b), (c) and (d) and amendments thereto filed pursuant to Rule 13d-2(b) (Amendment No.1)* IMPSAT Fiber Networks, Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock - -------------------------------------------------------------------------------- (Title of Class of Securities) 45321T202 - -------------------------------------------------------------------------------- (CUSIP Number) March 8, 2005 - -------------------------------------------------------------------------------- (Date of Event That Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: /x / Rule 13d-1(b) / / Rule 13d-1(c) / / Rule 13d-1(d) - -------------------------------------------------------------------------------- 1. Names of Reporting Persons and I.R.S. Identification No. UBS AG (for the benefit and on behalf of UBS Investment Bank and Wealth Management USA, business groups of UBS AG (See Item 7)) - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group a / / b / / - -------------------------------------------------------------------------------- 3. SEC USE ONLY - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Switzerland - -------------------------------------------------------------------------------- Number of 5. Sole Voting Power 1,918,880 Shares Bene- 6. Shared Voting Power 0 ficially 7. Sole Dispositive Power 1.918,880 Owned by Each 8. Shared Dispositive Power 0 Reporting Person With: - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 1,918,880 shares - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row 9 Excludes Certain Shares / / - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row 9 18.9% - -------------------------------------------------------------------------------- 12. Type of Reporting Person BK - -------------------------------------------------------------------------------- Item 1(a) Name of Issuer IMPSAT Fiber Networks, Inc. - -------------------------------------------------------------------------------- Item 1(b) Address of Issuer's Principal Executive Offices: IMPSAT Fiber Networks, Inc. Elvira Rawson de Dellapiane 150 Piso 8, C1107BCA Buenos Aires, Argentina - -------------------------------------------------------------------------------- Item 2(a) Name of Person Filing: UBS AG - -------------------------------------------------------------------------------- Item 2(b) Address of Principal Business Office: UBS AG's principal business office is: Bahnhofstrasse 45 PO Box CH-8021 Zurich, Switzerland - -------------------------------------------------------------------------------- Item 2(c) Citizenship: Switzerland - -------------------------------------------------------------------------------- Item 2(d) Title of Class of Securities: Common Stock - -------------------------------------------------------------------------------- Item 2(e) CUSIP Number: 45321T202 - -------------------------------------------------------------------------------- Item 3. Type of Person Filing: UBS AG is classified as a Bank as defined in section 3(a)(6) of the Act pursuant to no-action relief granted by the staff of the Securities and Exchange Commission. - -------------------------------------------------------------------------------- Item 4 (a)-(c)(iv). Ownership: Items 5-11 of the cover pages are incorporated by reference. - -------------------------------------------------------------------------------- Item 5. Ownership of Five Percent or Less of a Class: If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following / /. - -------------------------------------------------------------------------------- Item 6. Ownership of More than Five Percent on Behalf of Another Person: Not applicable - -------------------------------------------------------------------------------- Item 7. Identification and Classification of the Subsidiary That Acquired the Security Being Reported on By the Parent Holding Company: This statement on Schedule 13G is being filed by UBS AG on behalf of itself and the subsidiaries listed below. The securities being reported on by UBS AG were acquired directly by UBS AG directly and certain of such subsidiaries. UBS AG London Branch UBS Portfolio LLC UBS AG Frankfurt UBS Ltd UBS Warburg Private Clients Ltd UBS AG Tokyo branch UBS AG (Switzerland) UBS Warburg Securities (Pty) Ltd (South Africa) UBS International Ltd UBS Warburg Securities Ltd Banco UBS Warburg S.A UBS Warburg Corretora de Cambio e Valores Mobiliarios S.A. UBS Warburg Trading S.A. UBS Bunting Warburg Inc UBS Capital Americas Investments III, Ltd. UBS Capital II LLC UBS Capital LLC UBS AG Brazil UBS Limited UBS Capital Americas Investments II Ltd SBC Equity Partners AG UBS Capital Asia Pacific Ltd UBS Capital Holdings LLC UBS Capital Jersey Ltd UBS Capital BV UBS (USA) Inc UBS Warburg AG (Frankfurt) UBS Securities Australia Ltd UBS Securities (Japan) Ltd UBS Securities LLC UBS Securities New Zealand Limited UBS New Zealand Limited UBS AG Australia Branch UBS Capital Markets LP UBS Capital Latin America LDC UBS Securities France SA UBS AG Canada Branch UBS Cayman Ltd. PaineWebber Capital Inc Paine Webber International Inc UBS Fiduciary Trust Company UBS Financial Services Incorporated of Puerto Rico UBS Americas Inc UBS Financial Services Inc. - -------------------------------------------------------------------------------- Item 8. Identification and Classification of Members of the Group Not Applicable - -------------------------------------------------------------------------------- Item 9. Notice of Dissolution of Group: Not Applicable - -------------------------------------------------------------------------------- Item 10. Certification: By signing below, the undersigned certify that, to the best of their knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. - -------------------------------------------------------------------------------- SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. By: /s/ Teresa Ressel -------------------------------- Teresa Ressel Managing Director By: /s/ Per Dyrvik -------------------------------- Per Dyrvik Managing Director Date: July 15, 2005 -----END PRIVACY-ENHANCED MESSAGE-----