UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 3) PERINI CORPORATION ------------------ (Name of Issuer) COMMON STOCK, PAR VALUE $1.00 PER SHARE --------------------------------------- (Title of Class of Securities) 713839 10 8 ----------- (CUSIP Number) Kathleen E. Shannon Senior Vice President and Secretary American International Group, Inc. 70 Pine Street New York, New York 10270 (212) 770-7000 ----------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) DECEMBER 30, 2005 ----------------- (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 ss.ss. 240.13d-1(e), 240.13d-1(f), or 240.13d-1(g), check the following box. [ ] NOTE: Schedules filed in paper format shall include a signed original and five copies of this Schedule, including all exhibits. See Rule 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 (the "Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Exchange Act (however, see the Notes). CUSIP No. 713839 10 8 -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) AMERICAN INTERNATIONAL GROUP, INC. IRS Identification No. 13-2592361 -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a)[ ] (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) [X] -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Incorporated in the State of Delaware -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF SHARES ---------------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 13,973 EACH REPORTING ---------------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH ---------------------------------------------------- 10 SHARED DISPOSITIVE POWER 13,973 -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 13,973 -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Less Than 1% -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON HC, CO -------------------------------------------------------------------------------- CUSIP No. 713839 10 8 -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) NATIONAL UNION FIRE INSURANCE COMPANY OF PITTSBURGH, PA. IRS Identification No. 25-0687550 -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a)[ ] (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) [X] -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Incorporated in the Commonwealth of Pennsylvania -------------------------------------------------------------------------------- 7 SOLE VOTING POWER NUMBER OF SHARES ---------------------------------------------------- BENEFICIALLY 8 SHARED VOTING POWER OWNED BY 0 EACH REPORTING ---------------------------------------------------- PERSON 9 SOLE DISPOSITIVE POWER WITH ---------------------------------------------------- 10 SHARED DISPOSITIVE POWER 0 -------------------------------------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0 -------------------------------------------------------------------------------- 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] -------------------------------------------------------------------------------- 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0% -------------------------------------------------------------------------------- 14 TYPE OF REPORTING PERSON IC -------------------------------------------------------------------------------- CUSIP No. 713839 10 8 ITEM 1. SECURITY AND ISSUER This Amendment No. 3 ("Amendment No. 3") amends and supplements the Amendment No. 2 ("Amendment No. 2") to the Statement on Schedule 13D, dated December 22, 2005, relating to the Common Stock, $1.00 par value ("Common Stock") of Perini Corporation, a Massachusetts corporation (the "Company"), the Amendment No. 1 to the Statement on Schedule 13D, dated April 16, 2004, and the Statement on Schedule 13D, dated February 5, 2000 (the "Original 13D"). The principal executive offices of the Company are located at 73 Mt. Wayte Avenue, Framingham, Massachusetts 01701. ITEM 2. IDENTITY AND BACKGROUND (a) - (c) and (f). This Statement is filed by American International Group, Inc., a Delaware corporation ("AIG"), on behalf of itself and its wholly-owned subsidiary, National Union Fire Insurance Company of Pittsburgh, Pa., a Pennsylvania corporation ("National Union"). The 13,973 shares of Common Stock owned by AIG are held by certain investment advisor subsidiaries of AIG on behalf of their clients. AIG disclaims beneficial ownership of the 13,973 shares of Common Stock except to the extent of any pecuniary interest therein. AIG is a holding company which, through its subsidiaries, is primarily engaged in a broad range of insurance and insurance-related activities in the United State and abroad. AIG's primary activities include both general insurance and life insurance & retirement services operations. Other significant activities include financial services and asset management. Starr International Company, Inc., a Panamanian corporation ("SICO"), has the sole power to vote and direct the disposition of 310,905,397 shares of common stock, par value $2.50 per share, of AIG ("AIG Shares"). C.V. Starr & Co., Inc., a Delaware corporation ("Starr"), has the shared power to vote and direct the disposition of 47,337,246 AIG Shares (18,644,278 of which are held by the C.V. Starr & Co., Inc. Trust ("Starr Trust"), of which Starr is a beneficiary). Maurice R. Greenberg, a United States citizen, has the sole power to vote and direct the disposition of 2,902,938 AIG Shares, 52 of which are held directly by Mr. Greenberg and 2,902,886 of which may be acquired pursuant to stock options previously granted by AIG to Mr. Greenberg as a then officer and director of AIG. Mr. Greenberg has shared power to vote and direct the disposition of 90,931,972 AIG Shares, 43,488,099 of which are held as a tenant in common with Mr. Greenberg's wife, 106,627 of which are held in family trusts of which Mr. Greenberg is a trustee, and 47,337,246 of which are held by Starr (18,644,278 shares of which are held by the Starr Trust, for which Starr is a beneficiary and Mr. Greenberg is a trustee). Mr. Greenberg owns 27.9% of the voting common stock of Starr, and has irrevocable proxies until January 17, 2006, to vote in the aggregate, together with his direct ownership, 47.4% of the voting common stock of Starr. Edward E. Matthews, a United States citizen, has the sole power to vote and direct the disposition of 1,991,635 AIG Shares, 1,569,135 of which are held directly by Mr. Matthews and 422,500 of which may be acquired pursuant to stock options previously granted by AIG to Mr. Matthews as a then officer and director of AIG. Mr. Matthews has shared power to vote and direct the disposition of 18,667,178 AIG Shares, 22,900 of which are held by Mr. Matthews' wife and 18,644,278 of which are held by the Starr Trust, for which Starr is a beneficiary and Mr. Matthews is a trustee. The principal executive office of AIG and National Union is located at 70 Pine Street, New York, New York 10270. The principal executive offices of SICO are located at Clifton House-Suite 59, Lower Fitzwilliam Street, Dublin 2, Ireland and Mercury House, 101 Front Street, Hamilton HM12, Bermuda. The principal executive office of Starr is located at 399 Park Avenue, 17th Floor, New York, New York 10022. The names of the directors and executive officers ("Covered Persons") of AIG, National Union, SICO, and Starr, their business addresses and principal occupations, including the business addresses and principal occupations of Messrs. Greenberg and Matthews, are set forth in Exhibit A attached hereto, which is incorporated herein by reference in its entirety. The business address indicated for Messrs. Greenberg and Matthews and each other Covered Person is also the address of the principal employer of such person. Each of the Covered Persons is a citizen of the United States, except for Messrs. Sullivan, Tse, Tyler and Walsh, who are British Subjects, Mr. Marshall A. Cohen, who is a Canadian citizen, Dr. Jacob A. Frenkel, who is a citizen of the State of Israel and the Republic of Poland, and Mr. Zalamea, who is a citizen of the Republic of the Philippines. Except as provided for in the next sentence, all information provided in this Amendment No. 3 (including, without limitation, in this Item 2 and Exhibit A to this Amendment No. 3) with respect to Messrs. Greenberg and Matthews, SICO and Starr and their respective directors and executive officers is provided based solely on the information set forth in the Statement on Schedule 13D relating to AIG Shares, dated November 23, 2005, filed on behalf of Messrs. Greenberg and Matthews, SICO and Starr and the Form 4 relating to AIG Shares filed by Mr. Greenberg on January 4, 2006. The information provided in this Amendment No. 3 with respect to the ownership of, and transactions in, the Common Shares of the Company by Messrs. Greenberg and Matthews, SICO and Starr and their respective directors and executive officers is provided based solely on publicly available information. In each case, such information may not be accurate or complete and AIG takes no responsibility therefor and makes no representation to its accuracy or completeness as of the date hereof or any subsequent date. CUSIP No. 713839 10 8 ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION. This filing is not being made as a result of any particular acquisition of Common Stock by the reporting persons. ITEM 4. PURPOSE OF TRANSACTION As disclosed in Amendment No. 2, on December 20, 2005, National Union sold 266,874 shares of the Common Stock, at a price per share of $22.44375, in a public offering (the "Offering") pursuant to the Company's Registration Statement on Form S-1 (File No. 333-117344). National Union also granted to the underwriters of the Offering an option to purchase an additional 40,031 shares of the Common Stock, at a price per share of $22.44375, to cover over-allotments made by the underwriters in the Offering. On December 29, 2005, UBS Securities LLC (acting on behalf of itself and the several underwriters of the Offering) exercised the over-allotment option in full and, pursuant thereto, National Union sold an additional 40,031 shares of the Common Stock at a per share price of $22.44375 on January 4, 2006. As disclosed under Item 4 of the Original 13D, in connection with National Union's acquisition of Common Stock of the Company in March 2000, National Union entered into that certain Shareholders' Agreement (the "Shareholders' Agreement") dated March 29, 2000 (the form of which was filed as Exhibit (d) to the Original 13D) that, among other things, gives Tutor-Saliba Corporation ("TSC") and Ronald N. Tutor the right, under certain circumstances, to call such shares of Common Stock from National Union for a price specified in the Shareholders' Agreement (the "Call Right"). As disclosed in Amendment No. 2, on December 21, 2005, National Union received a notice from TSC exercising the Call Right for all of the shares of Common Stock owned by National Union (the "Call Notice") subject to the Call Right. A copy of the Call Notice was previously filed as Exhibit D to Amendment No. 2. On December 28, 2005, AIG and TSC executed a letter agreement that, among other things, sets forth certain representations and warranties by each party. A copy of this letter is attached as Exhibit B to this Amendment No. 3 and incorporated in its entirety by reference into this Amendment No. 3. Pursuant to the exercise of the Call Right, on December 30, 2005, National Union sold to TSC 2,352,941 shares of Common Stock at a price of $8.365 per share, which payment was received by National Union on January 3, 2006. Except as disclosed herein, none of AIG, National Union, or, to the best knowledge of AIG, any of the Covered Persons, has any plans or proposals which relate to or which would result in any of the actions specified in subparagraphs (a) through (j) of Item 4 of Schedule 13D. However AIG intends to review its investment in the Company on a continuing basis and may, as part of this ongoing evaluation of its investment, formulate new plans or proposals which could relate to or which could result in one or more of the actions referred to in paragraphs (a) through (j) of Item 4 of Schedule 13D, including, without limitation, increasing or decreasing of the size of AIG's investment in the Company. CUSIP No. 713839 10 8 ITEM 5. INTEREST IN SECURITIES OF THE ISSUER (a) and (b) The information required by these paragraphs is set forth in items 7 through 11 and 13 of the cover pages of this Amendment No. 3. (c) Other than as described in this Amendment No. 3, AIG, National Union, to the best of AIG's knowledge, the Covered Persons, and, based solely on the information described in the last paragraph of the subsection (a)-(c) and (f) of Item 2 above, Messrs. Greenberg and Matthews, SICO and Starr and their respective directors and executive officers, have not engaged in any transactions in the Common Stock within the past 60 days. (d) Not applicable. (e) December 30, 2005. ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER The response to Item 4 of this Amendment No. 3 is incorporated by reference herein in its entirety. ITEM 7. MATERIAL TO BE FILED AS EXHIBITS A) List of Directors and Executive Officers of American International Group, Inc., National Union Fire Insurance Company of Pittsburgh, Pa., Starr International Company, Inc. and C.V. Starr & Co., Inc., their business addresses and principal occupations. B) Letter Agreement, dated as of December 28, 2005, by and between National Union Fire Insurance Company of Pittsburgh, Pa. and Tutor-Saliba Corporation. CUSIP No. 713839 10 8 SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, each of us certifies that the information set forth in this amendment to this statement is true, complete and correct. Dated: January 10, 2006 AMERICAN INTERNATIONAL GROUP, INC. By: /s/ Kathleen E. Shannon ---------------------------- Name: Kathleen E. Shannon Title: Senior Vice President and Secretary NATIONAL UNION FIRE INSURANCE COMPANY OF PITTSBURGH, PA., By: AIG Global Investment Corp., its investment advisor By: /s/ FT Chong ---------------------------- Name: FT Chong Title: Managing Director CUSIP No. 713839 10 8 EXHIBIT INDEX EXHIBIT DESCRIPTION ------- ----------- A List of Directors and Executive Officers of American International Group, Inc., National Union Fire Insurance Company of Pittsburgh, Pa., Starr International Company, Inc. and C.V. Starr & Co., Inc., their business addresses and principal occupations. B Letter Agreement, dated as of December 28, 2005, by and between National Union Fire Insurance Company of Pittsburgh, Pa. and Tutor-Saliba Corporation.