================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 10) TRINSIC, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 988792107 (CUSIP Number) LAWRENCE C. TUCKER Brown Brothers Harriman & Co. 140 Broadway New York, New York (212) 483-1818 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) February 5, 2007 (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ]. *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). ================================================================================ CUSIP No. 988792107 SCHEDULE 13D Page 2 of 9 Pages -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON THE 1818 FUND III, L.P. -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [X] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS OO -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E) [_] -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE -------------------------------------------------------------------------------- NUMBER OF 7 SOLE VOTING POWER SHARES -0- BENEFICIALLY ------------------------------------------------ 8 SHARED VOTING POWER OWNED BY 14,592,428 See Item 5 EACH ------------------------------------------------ 9 SOLE DISPOSITIVE POWER REPORTING -0- PERSON ------------------------------------------------ 10 SHARED DISPOSITIVE POWER WITH 14,592,428 See Item 5 -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,592,428 See Item 5. -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 79.1% -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON PN -------------------------------------------------------------------------------- CUSIP No. 988792107 SCHEDULE 13D Page 3 of 9 Pages -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON BROWN BROTHERS HARRIMAN & CO. -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [X] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS OO -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E) [_] -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION NEW YORK -------------------------------------------------------------------------------- NUMBER OF 7 SOLE VOTING POWER SHARES -0- BENEFICIALLY ------------------------------------------------ 8 SHARED VOTING POWER OWNED BY 14,592,428 See Item 5 EACH ------------------------------------------------ 9 SOLE DISPOSITIVE POWER REPORTING -0- PERSON ------------------------------------------------ 10 SHARED DISPOSITIVE POWER WITH 14,592,428 See Item 5 -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,592,428 See Item 5. -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 79.1% -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON PN -------------------------------------------------------------------------------- CUSIP No. 988792107 SCHEDULE 13D Page 4 of 9 Pages -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON T. MICHAEL LONG -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [X] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS OO -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E) [_] -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES -------------------------------------------------------------------------------- NUMBER OF 7 SOLE VOTING POWER SHARES -0- BENEFICIALLY ------------------------------------------------ 8 SHARED VOTING POWER OWNED BY 14,592,428 See Item 5 EACH ------------------------------------------------ 9 SOLE DISPOSITIVE POWER REPORTING -0- PERSON ------------------------------------------------ 10 SHARED DISPOSITIVE POWER WITH 14,592,428 See Item 5 -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,592,428 See Item 5. -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 79.1% -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON IN -------------------------------------------------------------------------------- CUSIP No. 988792107 SCHEDULE 13D Page 5 of 9 Pages -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON LAWRENCE C. TUCKER -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [X] (b) [_] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS OO -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E) [_] -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION UNITED STATES -------------------------------------------------------------------------------- NUMBER OF 7 SOLE VOTING POWER SHARES 2,132 BENEFICIALLY ------------------------------------------------ 8 SHARED VOTING POWER OWNED BY 14,592,428 See Item 5 EACH ------------------------------------------------ 9 SOLE DISPOSITIVE POWER REPORTING 2,132 PERSON ------------------------------------------------ 10 SHARED DISPOSITIVE POWER WITH 14,592,428 See Item 5 -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,594,560 See Item 5. -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [_] -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 79.1% -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON IN -------------------------------------------------------------------------------- CUSIP No. 988792107 SCHEDULE 13D Page 6 of 9 Pages -------------------------------------------------------------------------------- EXPLANATORY NOTE This Amendment No. 10 ("AMENDMENT NO. 10") to Schedule 13D is filed by the undersigned to amend and supplement the Schedule 13D filed on November 20, 2000 (the "ORIGINAL 13D"), as amended by Amendment No. 1 to Schedule 13D filed on July 12, 2001 ("AMENDMENT NO. 1"), Amendment No. 2 to Schedule 13D filed on August 9, 2001 ("AMENDMENT NO. 2"), Amendment No. 3 to Schedule 13D filed on August 26, 2004 ("AMENDMENT NO. 3"), Amendment No. 4 to Schedule 13D filed on December 3, 2004 ("AMENDMENT NO. 4"), Amendment No. 5 to Schedule 13D filed on July 18, 2005 ("AMENDMENT NO. 5"), Amendment No. 6 to Schedule 13D filed on September 2, 2005 ("AMENDMENT NO. 6"), Amendment No. 7 to Schedule 13D filed on October 3, 2005 ("AMENDMENT NO. 7"), Amendment No. 8 to Schedule 13D filed on December 20, 2005 ("AMENDMENT NO. 8"), and Amendment No. 9 to the Schedule 13D filed on January 18, 2006 ("AMENDMENT NO. 9"), relating to the common stock (the "COMMON STOCK"), par value $.01 per share, issued by Trinsic, Inc., a Delaware corporation (the "COMPANY"). Unless otherwise indicated, all capitalized terms shall have the same meaning as provided in the Original 13D as amended by Amendment No.1, Amendment No. 2, Amendment No.3, Amendment No.4, Amendment No. 5, Amendment No. 6, Amendment No. 7, Amendment No. 8 and Amendment No. 9. ITEM 1. SECURITY AND ISSUER. No Change. ITEM 2. IDENTITY AND BACKGROUND. No Change. ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION. No Change. CUSIP No. 988792107 SCHEDULE 13D Page 7 of 9 Pages -------------------------------------------------------------------------------- ITEM 4. PURPOSE OF TRANSACTION. No Change. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER. Item 5 is hereby amended and supplemented by the addition of the following: As of the date hereof, based on calculations made in accordance with Rule 13d-3 promulgated under the Exchange Act and there being 18,453,983 shares of Common Stock outstanding (as of December 20, 2006 according to the Company's Information Statement on Schedule 14C as filed by the Company with the Securities and Exchange Commission on December 22, 2006), the number of shares of Common Stock the Fund, BBH, Long and Tucker would be deemed to own and the percent of the outstanding shares of Common Stock are as follows: SHARES PERCENTAGE ---------- ---------- Fund 14,592,428 79.1% BBH 14,592,428 79.1% Long 14,592,428 79.1% Tucker 14,594,560 79.1% ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO THE COMMON STOCK OF THE ISSUER. Item 6 is hereby amended and supplemented by the addition of the following: On February 5, 2007, in consideration for a loan in the aggregate principal amount of $80,000 made by the Fund to the Company on January 31, 2007, the Company executed a demand promissory note (the "DEMAND CUSIP No. 988792107 SCHEDULE 13D Page 8 of 9 Pages -------------------------------------------------------------------------------- NOTE") in favor of the Fund in an aggregate principal amount of $80,000 and bearing interest at a rate of sixteen percent (16%) per annum. Interest on the Demand Note accrues daily and will be added to the unpaid principal amount of the Demand Note. The Note is payable immediately upon demand by the Fund. The foregoing description of the Demand Note does not purport to be complete and is qualified in its entirety by reference to the Demand Note, a copy of which is attached hereto as Exhibit 1 to this Amendment No. 10. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS. 1. Demand Promissory Note, dated as of February 5, 2007, made by the Company in favor of The 1818 Fund III, L.P. CUSIP No. 988792107 SCHEDULE 13D Page 9 of 9 Pages -------------------------------------------------------------------------------- SIGNATURE After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: February 12, 2007 THE 1818 FUND III, L.P. By: Brown Brothers Harriman & Co., General Partner By: /s/ Lawrence C. Tucker -------------------------------- Name: Lawrence C. Tucker Title: Partner BROWN BROTHERS HARRIMAN & CO. By: /s/ Lawrence C. Tucker -------------------------------- Name: Lawrence C. Tucker Title: Partner /s/ T. Michael Long ------------------------------------ T. Michael Long /s/ Lawrence C. Tucker ------------------------------------ Lawrence C. Tucker