SC 13D/A 1 p08-1621sc13da.txt AIR TRANSPORT SERVICES GROUP, INC. ------------------------------------------------------------------------------- SEC POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF 1746 (11-02) INFORMATION CONTAINED IN THIS FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALID OMB CONTROL NUMBER. ------------------------------------------------------------------------------- --------------------------- UNITED STATES OMB APPROVAL --------------------------- SECURITIES AND EXCHANGE COMMISSION OMB Number: 3235-0145 --------------------------- WASHINGTON, D.C. 20549 Expires: February 28, 2009 --------------------------- Estimated average burden hours per response.....14.5 --------------------------- SCHEDULE 13D/A* (AMENDMENT NO. 4) Under the Securities Exchange Act of 1934 Air Transport Services Group, Inc. ------------------------------------------------------------------------------- (Name of Company) Common Stock, par value $.01 ------------------------------------------------------------------------------- (Title of Class of Securities) 00922R105 ------------------------------------------------------------------------------- (CUSIP Number of Class of Securities) William Kourakos Perella Weinberg Partners Capital Management LP 767 Fifth Avenue New York, NY 10153 (212) 287-3318 ------------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) November 17, 2008 ------------------------------------------------------------------------------- (Date of Event which Requires Filing of this Schedule) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D/A, and is filing this schedule because of ss.ss.240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. [x] 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 to whom copies are to be sent. * 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). SCHEDULE 13D/A ------------------------------------ ------------------------------ CUSIP NO. 00922R105 PAGE 3 OF 12 PAGES ------------------------------------ ------------------------------ ------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) PERELLA WEINBERG PARTNERS XERION MASTER FUND LTD. ------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [x] (b) [ ] ------------------------------------------------------------------------------- 3 SEC USE ONLY ------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC (See Item 3) ------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d)or 2(e) [ ] ------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Bermuda ------------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 2,961,390 Shares of Common Stock EACH -------------------------------------------------------------- REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH 0 -------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] ------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) (see Item 5) 4.68% ------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* OO ------------------------------------------------------------------------------- SCHEDULE 13D/A ------------------------------------ ------------------------------ CUSIP NO. 00922R105 PAGE 4 OF 12 PAGES ------------------------------------ ------------------------------ ------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) PERELLA WEINBERG PARTNERS XERION EQUITY LP ------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [x] (b) [ ] ------------------------------------------------------------------------------- 3 SEC USE ONLY ------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC (See Item 3 ------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ------------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 2,961,390 Shares of Common Stock EACH -------------------------------------------------------------- REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH 0 -------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] ------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) (see Item 5) 4.68% ------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* PN ------------------------------------------------------------------------------- SCHEDULE 13D/A ------------------------------------ ------------------------------ CUSIP NO. 00922R105 PAGE 5 OF 12 PAGES ------------------------------------ ------------------------------ ------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) PERELLA WEINBERG PARTNERS XERION FUND GP LLC ------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [x] (b) [ ] ------------------------------------------------------------------------------- 3 SEC USE ONLY ------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC (See Item 3) ------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ------------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 2,961,390 Shares of Common Stock EACH -------------------------------------------------------------- REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH 0 -------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*) [ ] ------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) (see Item 5) 4.68% ------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* OO ------------------------------------------------------------------------------- SCHEDULE 13D/A ------------------------------------ ------------------------------ CUSIP NO. 00922R105 PAGE 6 OF 12 PAGES ------------------------------------ ------------------------------ ------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) PERELLA WEINBERG PARTNERS CAPITAL MANAGEMENT LP ------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [x] (b) [ ] ------------------------------------------------------------------------------- 3 SEC USE ONLY ------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC (See Item 3) ------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ------------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 2,961,390 Shares of Common Stock EACH -------------------------------------------------------------- REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH 0 ------------------------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] ------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) (see Item 5) 4.68% ------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* IA ------------------------------------------------------------------------------- SCHEDULE 13D/A ------------------------------------ ------------------------------ CUSIP NO. 00922R105 PAGE 7 OF 12 PAGES ------------------------------------ ------------------------------ ------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) PERELLA WEINBERG PARTNERS CAPITAL MANAGEMENT GP LLC ------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [x] (b) [ ] ------------------------------------------------------------------------------- 3 SEC USE ONLY ------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC (See Item 3) ------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ------------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 2,961,390 Shares of Common Stock EACH -------------------------------------------------------------- REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH 0 -------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] ------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) (see Item 5) 4.68% ------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* OO ------------------------------------------------------------------------------- SCHEDULE 13D/A ------------------------------------ ------------------------------ CUSIP NO. 00922R105 PAGE 8 OF 12 PAGES ------------------------------------ ------------------------------ ------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) PERELLA WEINBERG PARTNERS GROUP LP ------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) [x] (b) [ ] ------------------------------------------------------------------------------- 3 SEC USE ONLY ------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC (See Item 3) ------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] ------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ------------------------------------------------------------------------------- 7 SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------------------- SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 2,961,390 Shares of Common Stock EACH -------------------------------------------------------------- REPORTING 9 SOLE DISPOSITIVE POWER PERSON WITH 0 ------------------------------------------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON 2,961,390 Shares of Common Stock ------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] ------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) (see Item 5) 4.68% ------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON* HC ------------------------------------------------------------------------------- CUSIP No. 00922R105 SCHEDULE 13D/A Page 9 of 12 Pages Pursuant to Rule 13d-2 promulgated under the Act, this Schedule 13D/A ("Amendment No. 4") amends the Schedule 13D/A ("Amendment No. 3") filed on November 13, 2008 which amended the Schedule 13D/A ("Amendment No. 2") filed on November 6, 2008 which amended the Schedule 13D/A ("Amendment No. 1") filed on August 4, 2008 which amended the Schedule 13D filed on July 2, 2008 (the "Original Schedule 13D") by the Reporting Persons (as defined below). This Amendment No. 4 is being filed by (i) Perella Weinberg Partners Xerion Master Fund Ltd., a Bermuda limited company (the "Master Fund"), with respect to shares of Common Stock (as defined below) directly owned by it; (ii) Perella Weinberg Partners Xerion Equity LP, a Delaware limited partnership (the "Master Fund Manager"), which serves as the manager of the Master Fund, with respect to shares of Common Stock directly owned by the Master Fund; (iii) Perella Weinberg Partners Xerion Fund GP LLC, a Delaware limited liability company (the "GP"), which serves as the general partner of the Master Fund Manager, with respect to shares of Common Stock directly owned by the Master Fund; (iv) Perella Weinberg Partners Capital Management LP, a Delaware limited partnership (the "Investment Manager") that is registered with the Securities and Exchange Commission as an investment adviser, which indirectly serves as the investment adviser to the Master Fund and is also the managing member of the GP, with respect to the shares of Common Stock directly owned by the Master Fund; (v) Perella Weinberg Partners Capital Management GP LLC, a Delaware limited liability company ("PWPCMGP"), which serves as the general partner of the Investment Manager, which indirectly serves as the investment adviser to the Master Fund, with respect to the shares of Common Stock directly owned by the Master Fund; and (vi) Perella Weinberg Partners Group LP, a Delaware limited partnership ("Group"), which serves as the managing member of PWPCMGP, the general partner of the Investment Manager, which indirectly serves as the investment adviser to the Master Fund, with respect to the shares of Common Stock directly owned by the Master Fund. The foregoing persons are hereinafter collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party. This Amendment No. 4 relates to the common stock, par value $.01, (the "Common Stock") of Air Transport Services Group, Inc., a Delaware corporation (the "Company"). Unless the context otherwise requires, references herein to the "Shares" are to the Common Stock of the Company. The Reporting Persons are making this single, joint filing because they may be deemed to constitute a "group" within the meaning of Section 13(d)(3) of the Act. The agreement among the Reporting Persons to file jointly (the "Joint Filing Agreement") was previously filed as Exhibit A to the Original Schedule 13D. The Master Fund Manager, as manager to the Master Fund, which directly owns the Common Stock to which this filing relates, has voting and dispositive authority over such Common Stock. As such the Master Fund Manager may be deemed to be the beneficial owner of such Common Stock. The GP, as general partner to the Master Fund Manager, may be deemed to control such entity and therefore, may be deemed to be the beneficial owner of the Common Stock to which this filing relates. The Investment Manager is the managing member of the GP. As such, it may be deemed to control such entity and therefore may be deemed to be the beneficial owner of the Common Stock to which this filing relates. PWPCMGP is the general partner of the Investment Manager. As such, it may be deemed to control such entity and therefore, may be deemed to be the beneficial owner of the Common Stock to which this filing relates. Group is the managing CUSIP No. 00922R105 SCHEDULE 13D/A Page 10 of 12 Pages member of PWPCMGP. As such, it may be deemed to control PWPCMGP and therefore, may be deemed to be the beneficial owner of the Common Stock to which this filing relates. Each of the Master Fund Manager, the GP, the Investment Manager, PWPCMGP and Group disclaims beneficial ownership of all of the Shares reported in this Amendment No. 4. This Amendment No. 4 also constitutes an "exit filing" for the Reporting Persons, who do not intend to file any further amendments to the Original Schedule 13D. ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION. Item 3 of Amendment No. 3, Amendment No. 2, Amendment No. 1 and the Original Schedule 13D is hereby amended and restated as follows: 2,961,390 Shares of Common Stock reported in this Amendment No. 4 were acquired by the Master Fund. The aggregate purchase price for the 2,961,390 Shares of Common Stock Shares was approximately $2,885,177. The Master Fund Manager, the GP, the Investment Manager, PWPCMGP and Group do not directly own any Shares. The source of funds for the purchase of the Shares reported in this Amendment No. 4 was the working capital of the Master Fund. ITEM 4. PURPOSE OF TRANSACTION. Item 4 of Amendment No. 3, Amendment No. 2, Amendment No. 1 and the Original Schedule 13D is hereby amended and restated as follows: The Reporting Persons take issue with a number of the material business decisions that have been taken recently by management, which, in the view of the Reporting Persons, were not in the best interests of shareholders. ITEM 5. INTEREST IN SECURITIES OF THE COMPANY. Paragraphs (a), (b), (c) and (e) of Item 5 of Amendment No. 3, Amendment No. 2, Amendment No. 1 and the Original Schedule 13D are hereby amended as follows: (a) The Reporting Persons may be deemed to beneficially own, in the aggregate, 2,961,390 Shares of Common Stock Shares, representing approximately 4.68% of the Company's outstanding Common Stock (based upon the 63,227,084 Shares stated to be outstanding by the Company as of August 11, 2008, in the Company's Form 10-Q for the quarter ended June 30, 2008, filed with the Securities and Exchange Commission on August 11, 2008. (b) The Reporting Persons may be viewed as having shared voting and dispositive power with respect to 2,961,390 Shares of Common Stock. (c) The following transactions were effected by the Reporting Persons since the filing of Amendment No. 3. All of the Shares were purchased or sold in open market transactions. CUSIP No. 00922R105 SCHEDULE 13D/A Page 11 of 12 Pages LIST OF TRANSACTIONS Name Date Number of Shares Price Per Share Purchased/ (Sold) Perella Weinberg Partners 11/17/2008 (347,629) $0.18 Xerion Master Fund Ltd. Perella Weinberg Partners 11/14/2008 (350,981) $0.18 Xerion Master Fund Ltd. Perella Weinberg Partners 11/13/2008 (133,500) $0.16 Xerion Master Fund Ltd. Perella Weinberg Partners 11/12/2008 (2,500) $0.24 Xerion Master Fund Ltd. (e) November 17, 2008. CUSIP No. 00922R105 SCHEDULE 13D/A Page 12 of 12 Pages SIGNATURES After reasonable inquiry and to the best of his knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: November 19, 2008 PERELLA WEINBERG PARTNERS XERION MASTER FUND LTD. /s/ William Kourakos ---------------------------------------------------- NAME: William Kourakos TITLE: Authorized Person PERELLA WEINBERG PARTNERS XERION EQUITY LP /s/ William Kourakos ---------------------------------------------------- NAME: William Kourakos TITLE: Partner and Authorized Person PERELLA WEINBERG PARTNERS XERION FUND GP LLC /s/ William Kourakos ---------------------------------------------------- NAME: William Kourakos TITLE: Authorized Person PERELLA WEINBERG PARTNERS CAPITAL MANAGEMENT LP /s/ William Kourakos ---------------------------------------------------- NAME: William Kourakos TITLE: Partner and Authorized Person PERELLA WEINBERG PARTNERS CAPITAL MANAGEMENT GP LLC /s/ William Kourakos ---------------------------------------------------- NAME: William Kourakos TITLE: Authorized Person PERELLA WEINBERG PARTNERS GROUP LP /s/ William Kourakos ---------------------------------------------------- NAME: William Kourakos TITLE: Partner and Authorized Person