-----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, CUBmL9kfrdpdFW+8lknGYWlzuRH0uyXtFvvl9qME4zAi8OK6UjvFaP0BknYXc4SY Dmoje1WV+OgHk2AHMqIJJg== 0000950005-06-000135.txt : 20060214 0000950005-06-000135.hdr.sgml : 20060214 20060213185334 ACCESSION NUMBER: 0000950005-06-000135 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20060214 DATE AS OF CHANGE: 20060213 GROUP MEMBERS: ECP II INTERFUND L.P. GROUP MEMBERS: ECP II MANAGEMENT, L.L.C. GROUP MEMBERS: ECP II MANAGEMENT, L.P. GROUP MEMBERS: ENERTECH CAPITAL PARTNERS II, L.P. GROUP MEMBERS: MARK J. DENINO GROUP MEMBERS: ROBERT E. KEITH, JR. GROUP MEMBERS: SCOTT B. UNGERER GROUP MEMBERS: WILLIAM G. KINGSLEY SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: ARBINET THEXCHANGE INC CENTRAL INDEX KEY: 0001136655 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-BUSINESS SERVICES, NEC [7389] IRS NUMBER: 133930916 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-80439 FILM NUMBER: 06605839 BUSINESS ADDRESS: STREET 1: 120 ALBANY STREET, TOWER II STREET 2: SUITE 450 CITY: NEW BRUNSWICK STATE: NJ ZIP: 08901 BUSINESS PHONE: 7325099100 MAIL ADDRESS: STREET 1: 120 ALBANY STREET, TOWER II STREET 2: SUITE 450 CITY: NEW BRUNSWICK STATE: NJ ZIP: 08901 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: EnerTech Capital Partners II, L.P. CENTRAL INDEX KEY: 0001292175 IRS NUMBER: 233020217 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 435 DEVON PARK DR, BUILDING 700 CITY: WAYNE STATE: PA ZIP: 19087 BUSINESS PHONE: 610-254-4141 MAIL ADDRESS: STREET 1: 435 DEVON PARK DR, BUILDING 700 CITY: WAYNE STATE: PA ZIP: 19087 SC 13G/A 1 p19685_13ga.txt SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b) (Amendment No. 1)* Arbinet-thexchange, Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock - -------------------------------------------------------------------------------- (Title of Class of Securities) 03875P100 - -------------------------------------------------------------------------------- (CUSIP Number) December 31, 2005 - -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [ ] Rule 13d-1(c) [X] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). (Continued on following pages) Page 1 of 19 Pages Exhibit Index Contained on Page 18
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 2 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON EnerTech Capital Partners II, L.P. ("ECP II") Tax ID Number: - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 1,494,686 ordinary common shares ("shares"), except that ECP II SHARES Management, L.P. ("Management II LP"), the general partner of ECP II, BENEFICIALLY and ECP II Management, LLC ("Management II LLC"), the general partner OWNED BY EACH REPORTING of Management II LP may be deemed to have sole power to vote these PERSON shares, and William G. Kingsley ("Kingsley"), Scott B. Ungerer WITH ("Ungerer"), Robert E. Keith, Jr. ("Keith"), and Mark J. DeNino ("DeNino"), the members of the executive board of Management II LLC, may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER See response to row 5. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 1,494,686 shares, except that Management II LP", the general partner of ECP II, and Management II LLC, the general partner of Management II LP may be deemed to have sole power to dispose of these shares, and Kingsley, Ungerer, Keith, and DeNino, the members of the executive board of Management II LLC, may be deemed to have shared power to dispose of these shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See response to row 7. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,494,686 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.8% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 3 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON ECP II Interfund L.P. ("Interfund II") Tax ID Number: - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 57,014 shares, except that Management II LLC, the general partner of SHARES Interfund II, may be deemed to have sole power to vote these shares, BENEFICIALLY and Kingsley, Ungerer, Keith, and DeNino, the members of the executive OWNED BY EACH REPORTING board of Management II LLC, may be deemed to have shared power to vote PERSON these shares. WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER See response to row 5. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 57,014 shares, except that Management II LLC, the general partner of Interfund II, may be deemed to have sole power to dispose of these shares, and Kingsley, Ungerer, Keith, and DeNino, the members of the executive board of Management II LLC, may be deemed to have shared power to dispose of these shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See response to row 7. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 57,014 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0.2% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 4 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON ECP II Management, L.P. ("Management II LP") Tax ID Number: - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 1,494,686 shares, all of which are directly owned by ECP II except SHARES that Management II LLC, the general partner of Management II LP, may BENEFICIALLY be deemed to have sole power to vote these shares, and Kingsley, OWNED BY EACH REPORTING Ungerer, Keith, and DeNino, the members of the executive board of PERSON Management II LLC, may be deemed to have shared power to vote these WITH shares. -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER See response to row 5. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 1,494,686 shares, all of which are directly owned by ECP II except that Management II LLC, the general partner of Management II LP, may be deemed to have sole power to dispose of these shares, and Kingsley, Ungerer, Keith, and DeNino, the members of the executive board of Management II LLC, may be deemed to have shared power to dispose of these shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See response to row 7. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,494,686 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.8% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 5 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON ECP II Management, LLC ("Management II LLC") Tax ID Number: - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and SHARES 57,014 are directly owned by Interfund II. Management II LLC, the BENEFICIALLY general partner of Management II LP, which in turn is the general OWNED BY EACH REPORTING partner of ECP II, may be deemed to have sole power to vote these PERSON shares, and Kingsley, Ungerer, Keith, and DeNino, the members of the WITH executive board of Management II LLC, may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER See response to row 5. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. Management II LLC, the general partner of Management II LP, which in turn is the general partner of ECP II, may be deemed to have sole power to dispose of these shares, and Kingsley, Ungerer, Keith, and DeNino, the members of the executive board of Management II LLC, may be deemed to have shared power to dispose of these shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See response to row 7. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,551,700 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* OO - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 6 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON Mark J. DeNino ("DeNino") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 shares. SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. DeNino is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. DeNino is a member of the executive board of Management II LLC the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,551,700 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 7 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON Robert E. Keith, Jr. ("Keith") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- NUMBER OF SHARES 5 SOLE VOTING POWER BENEFICIALLY 0 shares. OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. Keith is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. Keith is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,551,700 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 8 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON William G. Kingsley ("Kingsley") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- NUMBER OF SHARES 5 SOLE VOTING POWER BENEFICIALLY 0 shares. OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. Kingsley is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. Kingsley is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,551,700 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 9 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON Scott B. Ungerer ("Ungerer") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- NUMBER OF SHARES 5 SOLE VOTING POWER BENEFICIALLY 0 shares. OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. Ungerer is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 1,551,700 shares, of which 1,494,686 are directly owned by ECP II and 57,014 are directly owned by Interfund II. Ungerer is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,551,700 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 6.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 10 of 30 - ------------------------------- ----------------------------- ITEM 1(A). NAME OF ISSUER -------------- Arbinet-thexchange, Inc. ITEM 1(B). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES ----------------------------------------------- 120 ALBANY STREET, TOWER II SUITE 450 NEW BRUNSWICK, NJ 08901 ITEM 2(A). NAME OF PERSONS FILING ---------------------- This Statement is filed by EnerTech Capital Partners II, L.P., a Delaware limited partnership ("ECP II"), ECP II Interfund, L.P., a Delaware limited partnership ("Interfund II"), ECP II Management, L.P., a Delaware limited partnership ("Management II LP"), ECP II Management, LLC, a Delaware limited liability company ("Management II LLC") and William G. Kingsley ("Kingsley"), Scott B. Ungerer ("Ungerer"), Robert E. Keith, Jr. ("Keith"), and Mark J. DeNino ("DeNino"). The foregoing entities and individuals are collectively referred to as the "Reporting Persons." Management II LLC, the general partner of Interfund II and of Management II LP, which is the general partner of ECP II, may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by ECP II and Interfund II. DeNino, Keith, Kingsley, and Ungerer are the members of the executive board of Management II LLC and may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by ECP II and Interfund II. ITEM 2(B). ADDRESS OF PRINCIPAL OFFICE --------------------------- The address for each of the Reporting Persons is: EnerTech Capital Partners 435 Devon Park Drive 700 Building Wayne, PA 19087 ITEM 2(C) CITIZENSHIP ----------- ECP II, Interfund II, and Management II LP are Delaware limited partnerships. Management II LLC is a Delaware limited liability company. DeNino, Keith, Kingsley, and Ungerer are United States citizens. ITEM 2(D) AND (E). TITLE OF CLASS OF SECURITIES AND CUSIP NUMBER --------------------------------------------- Common Stock CUSIP # ITEM 3. Not Applicable -------------- ITEM 4. OWNERSHIP --------- Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned: -------------------------- - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 11 of 30 - ------------------------------- ----------------------------- See Row 9 of cover page for each Reporting Person. (b) Percent of Class: ----------------- See Row 11 of cover page for each Reporting Person. (c) Number of shares as to which such person has: --------------------------------------------- (i) Sole power to vote or to direct the vote: ----------------------------------------- See Row 5 of cover page for each Reporting Person. (ii) Shared power to vote or to direct the vote: ------------------------------------------- See Row 6 of cover page for each Reporting Person. (iii) Sole power to dispose or to direct the --------------------------------------------- disposition of: --------------- See Row 7 of cover page for each Reporting Person. (iv) Shared power to dispose or to direct the --------------------------------------------- disposition of: --------------- See Row 8 of cover page for each Reporting Person. ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS -------------------------------------------- Not applicable. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON. ---------------------------------------------------------------- Under certain circumstances, set forth in the limited partnership agreements of ECP II, Interfund II, and Management II LP, and the limited liability company agreement of Management II LLC, the general and limited partners or members, as the case may be, of each of such entities may be deemed to have the right to receive dividends from, or the proceeds from, the sale of shares of the issuer owned by each such entity of which they are a partner. ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED ------------------------------------------------------------------ THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY ------------------------------------------------------------------ - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 12 of 30 - ------------------------------- ----------------------------- Not applicable. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP. ---------------------------------------------------------- Not applicable ITEM 9. NOTICE OF DISSOLUTION OF GROUP. ------------------------------- Not applicable ITEM 10. CERTIFICATION. -------------- Not applicable - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 13 of 30 - ------------------------------- ----------------------------- SIGNATURES 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. Date: February ___, 2005 EnerTech Capital Partners II, L.P., a Delaware Limited Partnership ECP II Interfund, L.P., a Delaware Limited Partnership ECP II Management, L.P., a Delaware Limited Partnership ECP II Management, LLC, a Delaware Limited Liability Company By: ----------------------------------- Pamela Strisofsky Attorney-in-Fact* William G. Kingsley Scott B. Ungerer Robert E. Keith, Jr. Mark J. DeNino By: ----------------------------------- Pamela Strisofsky Attorney-in-Fact* *Signed pursuant to a Power of Attorney already on file with the appropriate agencies. The original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If the statement is signed on behalf of a person by his authorized representative other than an executive officer or general partner of the filing person, evidence of the representative's authority to sign on behalf of such person shall be filed with the statement, provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the statement shall be typed or printed beneath his signature. NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See ss.240.13d-7 for other parties for whom copies are to be sent. Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations (See 18 U.S.C. 1001) http://www.sec.gov/divisions/corpfin/forms/13g.htm Last update: 06/04/2001 - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 14 of 30 - ------------------------------- ----------------------------- EXHIBIT INDEX ------------- Found on Sequentially Exhibit Numbered Page - ------- ------------- Exhibit A: Schedule 13G, Arbinet-theexchange, Inc., 12/21/2004 15 - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 15 of 30 - ------------------------------- ----------------------------- EXHIBIT A --------- SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b) (Amendment No. __)* Arbinet-thexchange, Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock - -------------------------------------------------------------------------------- (Title of Class of Securities) 03875P100 - -------------------------------------------------------------------------------- (CUSIP Number) December 31, 2004 - -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [ ] Rule 13d-1(c) [X] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). (Continued on following pages) Page 1 of 19 Pages Exhibit Index Contained on Page 18
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 16 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON EnerTech Capital Partners II, L.P. ("ECP II") Tax ID Number: - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 2,322,124 ordinary common shares ("shares"), except that ECP II SHARES Management, L.P. ("Management II LP"), the general partner of ECP II, BENEFICIALLY and ECP II Management, LLC ("Management II LLC"), the general partner OWNED BY EACH REPORTING of Management II LP may be deemed to have sole power to vote these PERSON shares, and William G. Kingsley ("Kingsley"), Scott B. Ungerer WITH ("Ungerer"), David F. Lincoln ("Lincoln"), Robert E. Keith, Jr. ("Keith"), and Mark J. DeNino ("DeNino"), the members of the executive board of Management II LLC, may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER See response to row 5. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 2,322,124 shares, except that Management II LP"), the general partner of ECP II, and Management II LLC, the general partner of Management II LP may be deemed to have sole power to dispose of these shares, and Kingsley, Ungerer, Lincoln, Keith, and DeNino, the members of the executive board of Management II LLC, may be deemed to have shared power to dispose of these shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See response to row 7. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,322,124 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 9.6% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 17 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON ECP II Interfund L.P. ("Interfund II") Tax ID Number: - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 88,577 shares, except that Management II LLC, the general partner of SHARES Interfund II, may be deemed to have sole power to vote these shares, BENEFICIALLY and Kingsley, Ungerer, Lincoln, Keith, and DeNino, the members of the OWNED BY EACH REPORTING executive board of Management II LLC, may be deemed to have shared PERSON power to vote these shares. WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER See response to row 5. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 88,577 shares, except that Management II LLC, the general partner of Interfund II, may be deemed to have sole power to dispose of these shares, and Kingsley, Ungerer, Lincoln, Keith, and DeNino, the members of the executive board of Management II LLC, may be deemed to have shared power to dispose of these shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See response to row 7. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 88,577 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0.4% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 18 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON ECP II Management, L.P. ("Management II LP") Tax ID Number: - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 2,322,124 shares, all of which are directly owned by ECP II except SHARES that Management II LLC, the general partner of Management II LP, may BENEFICIALLY be deemed to have sole power to vote these shares, and Kingsley, OWNED BY EACH REPORTING Ungerer, Lincoln, Keith, and DeNino, the members of the executive PERSON board of Management II LLC, may be deemed to have shared power to vote WITH these shares. -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER See response to row 5. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 2,322,124 shares, all of which are directly owned by ECP II except that Management II LLC, the general partner of Management II LP, may be deemed to have sole power to dispose of these shares, and Kingsley, Ungerer, Lincoln, Keith, and DeNino, the members of the executive board of Management II LLC, may be deemed to have shared power to dispose of these shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See response to row 7. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,322,124 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 9.6% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 19 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON ECP II Management, LLC ("Management II LLC") Tax ID Number: - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and SHARES 88,577 are directly owned by Interfund II. Management II LLC, the BENEFICIALLY general partner of Management II LP, which in turn is the general OWNED BY EACH REPORTING partner of ECP II, may be deemed to have sole power to vote these PERSON shares, and Kingsley, Ungerer, Lincoln, Keith, and DeNino, the members WITH of the executive board of Management II LLC, may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER See response to row 5. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Management II LLC, the general partner of Management II LP, which in turn is the general partner of ECP II, may be deemed to have sole power to dispose of these shares, and Kingsley, Ungerer, Lincoln, Keith, and DeNino, the members of the executive board of Management II LLC, may be deemed to have shared power to dispose of these shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER See response to row 7. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,410,701 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 10.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* OO - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 20 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON Mark J. DeNino ("DeNino") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 shares. SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. DeNino is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. DeNino is a member of the executive board of Management II LLC the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,410,701 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 10.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 21 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON Robert E. Keith, Jr. ("Keith") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- NUMBER OF SHARES 5 SOLE VOTING POWER BENEFICIALLY 0 shares. OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Keith is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Keith is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,410,701 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 10.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 22 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON William G. Kingsley ("Kingsley") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- NUMBER OF SHARES 5 SOLE VOTING POWER BENEFICIALLY 0 shares. OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Kingsley is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Kingsley is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,410,701 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 10.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 23 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON David F. Lincoln ("Lincoln") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- NUMBER OF SHARES 5 SOLE VOTING POWER BENEFICIALLY 0 shares. OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Lincoln is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Lincoln is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,410,701 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 10.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ---------------------------------------------------------- -------------------------------------- CUSIP NO. 03875P100 13 G Page 24 of 30 - ---------------------------------------------------------- -------------------------------------- - ------------ --------------------------------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON Scott B. Ungerer ("Ungerer") - ------------ --------------------------------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) (b) X - ------------ --------------------------------------------------------------------------------------------------------- 3 SEC USE ONLY - ------------ --------------------------------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - ------------ --------------------------------------------------------------------------------------------------------- NUMBER OF SHARES 5 SOLE VOTING POWER BENEFICIALLY 0 shares. OWNED BY EACH REPORTING PERSON WITH -------- ------------------------------------------------------------------------ 6 SHARED VOTING POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Ungerer is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to vote these shares. -------- ------------------------------------------------------------------------ 7 SOLE DISPOSITIVE POWER 0 shares. -------- ------------------------------------------------------------------------ 8 SHARED DISPOSITIVE POWER 2,410,701 shares, of which 2,322,124 are directly owned by ECP II and 88,577 are directly owned by Interfund II. Ungerer is a member of the executive board of Management II LLC, the general partner of Interfund II and of Management II LP, which in turn is the general parter of ECP II, and may be deemed to have shared power to dispose of these shares. - ------------------------------------ -------- ------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,410,701 - ------------ --------------------------------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* - ------------ --------------------------------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 10.0% - ------------ --------------------------------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - ------------ ---------------------------------------------------------------------------------------------------------
- ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 25 of 30 - ------------------------------- ----------------------------- ITEM 1(A). NAME OF ISSUER -------------- Arbinet-thexchange, Inc. ITEM 1(B). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES ----------------------------------------------- 120 ALBANY STREET, TOWER II SUITE 450 NEW BRUNSWICK, NJ 08901 ITEM 2(A). NAME OF PERSONS FILING ---------------------- This Statement is filed by EnerTech Capital Partners II, L.P., a Delaware limited partnership ("ECP II"), ECP II Interfund, L.P., a Delaware limited partnership ("Interfund II"), ECP II Management, L.P., a Delaware limited partnership ("Management II LP"), ECP II Management, LLC, a Delaware limited liability company ("Management II LLC") and William G. Kingsley ("Kingsley"), Scott B. Ungerer ("Ungerer"), David F. Lincoln ("Lincoln"), Robert E. Keith, Jr. ("Keith"), and Mark J. DeNino ("DeNino"). The foregoing entities and individuals are collectively referred to as the "Reporting Persons." Management II LLC, the general partner of Interfund II and of Management II LP, which is the general partner of ECP II, may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by ECP II and Interfund II. DeNino, Keith, Kingsley, Lincoln and Ungerer are the members of the executive board of Management II LLC and may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by ECP II and Interfund II. ITEM 2(B). ADDRESS OF PRINCIPAL OFFICE --------------------------- The address for each of the Reporting Persons is: EnerTech Capital Partners 435 Devon Park Drive 700 Building Wayne, PA 19087 ITEM 2(C) CITIZENSHIP ----------- ECP II, Interfund II, and Management II LP are Delaware limited partnerships. Management II LLC is a Delaware limited liability company. DeNino, Keith, Kingsley, Lincoln and Ungerer are United States citizens. ITEM 2(D) AND (E). TITLE OF CLASS OF SECURITIES AND CUSIP NUMBER --------------------------------------------- Common Stock CUSIP # ITEM 3. Not Applicable -------------- ITEM 4. OWNERSHIP --------- Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (d) Amount beneficially owned: -------------------------- - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 26 of 30 - ------------------------------- ----------------------------- See Row 9 of cover page for each Reporting Person. (e) Percent of Class: ----------------- See Row 11 of cover page for each Reporting Person. (f) Number of shares as to which such person has: --------------------------------------------- (i) Sole power to vote or to direct the vote: ----------------------------------------- See Row 5 of cover page for each Reporting Person. (ii) Shared power to vote or to direct the vote: ------------------------------------------- See Row 6 of cover page for each Reporting Person. (iii) Sole power to dispose or to direct the ------------------------------------------ disposition of: --------------- See Row 7 of cover page for each Reporting Person. (iv) Shared power to dispose or to direct the ------------------------------------------- disposition of: --------------- See Row 8 of cover page for each Reporting Person. ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS -------------------------------------------- Not applicable. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON. ---------------------------------------------------------------- Under certain circumstances, set forth in the limited partnership agreements of ECP II, Interfund II, and Management II LP, and the limited liability company agreement of Management II LLC, the general and limited partners or members, as the case may be, of each of such entities may be deemed to have the right to receive dividends from, or the proceeds from, the sale of shares of the issuer owned by each such entity of which they are a partner. - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 27 of 30 - ------------------------------- ----------------------------- ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED ------------------------------------------------------------------ THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY ------------------------------------------------------------ Not applicable. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP. ---------------------------------------------------------- Not applicable ITEM 9. NOTICE OF DISSOLUTION OF GROUP. ------------------------------- Not applicable ITEM 10. CERTIFICATION. -------------- Not applicable - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 28 of 30 - ------------------------------- ----------------------------- SIGNATURES ---------- 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. Date: February 14, 2005 EnerTech Capital Partners II, L.P., a Delaware Limited Partnership ECP II Interfund, L.P., a Delaware Limited Partnership ECP II Management, L.P., a Delaware Limited Partnership ECP II Management, LLC, a Delaware Limited Liability Company By: /s/ Pamela Strisofsky -------------------------------- Pamela Strisofsky Attorney-in-Fact* William G. Kingsley Scott B. Ungerer David F. Lincoln Robert E. Keith, Jr. Mark J. DeNino By: /s/ Pamela Strisofsky -------------------------------- Pamela Strisofsky Attorney-in-Fact* *Signed pursuant to a Power of Attorney already on file with the appropriate agencies. The original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If the statement is signed on behalf of a person by his authorized representative other than an executive officer or general partner of the filing person, evidence of the representative's authority to sign on behalf of such person shall be filed with the statement, provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the statement shall be typed or printed beneath his signature. NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See ss.240.13d-7 for other parties for whom copies are to be sent. Attention: Intentional misstatements or omissions of fact constitute Federal criminal violations (See 18 U.S.C. 1001) http://www.sec.gov/divisions/corpfin/forms/13g.htm Last update: 06/04/2001 - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 29 of 30 - ------------------------------- ----------------------------- EXHIBIT INDEX ------------- Found on Sequentially Exhibit Numbered Page - ------- ------------- Exhibit A: Agreement of Joint Filing 15 - ------------------------------- ----------------------------- CUSIP NO. 03875P100 13 G Page 30 of 30 - ------------------------------- ----------------------------- EXHIBIT A --------- Agreement of Joint Filing ------------------------- The undersigned hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Common Stock of shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13G. Date: February 14, 2005 EnerTech Capital Partners II, L.P., a Delaware Limited Partnership ECP II Interfund, L.P., a Delaware Limited Partnership ECP II Management, L.P., a Delaware Limited Partnership ECP II Management, LLC, a Delaware Limited Liability Company By: /s/ Pamela Strisofsky -------------------------------- Pamela Strisofsky Attorney-in-Fact* William G. Kingsley Scott B. Ungerer David F. Lincoln Robert E. Keith, Jr. Mark J. DeNino By: /s/ Pamela Strisofsky -------------------------------- Pamela Strisofsky Attorney-in-Fact* *Signed pursuant to a Power of Attorney already on file with the appropriate agencies. -----END PRIVACY-ENHANCED MESSAGE-----