SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7) Unitrode Corporation - --------------------------------------------------------------------------- (Name of Issuer) Common Stock, par value $.20 - --------------------------------------------------------------------------- (Title of Class of Securities) 913283-10-7 ---------------------------- (CUSIP Number) H. Barrett Flanders, Jr., Assistant General Counsel, AlliedSignal Inc. 101 Columbia Road, Morristown, New Jersey 07962-2245 201-455-4563 - --------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) April 21, 1995; April 24, 1995 -------------------------------------------------------- (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 ---- Check the following box if a fee is being paid with this statement ---- Page 1 of 5 pages SCHEDULE 13D CUSIP No. Page 2 of 5 Pages 1 NAME OF REPORTING PERSON S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON AlliedSignal Inc., as successor by merger to The Signal Companies, Inc. 22-2640650 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) ---- (b) ---- 3 SEC USE ONLY 4 SOURCE OF FUNDS WC & AF (as to shares purchased June 26, 1980) AF & BK (as to shares purchased September 29, 1980) 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 0 SHARES BENEFICIALLY 8 SHARED VOTING POWER 0 OWNED BY EACH 9 SOLE DISPOSITIVE POWER 0 REPORTING PERSON 10 SHARED DISPOSITIVE POWER 0 WITH 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 percent 14 TYPE OF REPORTING PERSON CO Item 1. Security and Issuer. This statement relates to the Common Stock, par value $0.20 per share ("Unitrode Common Stock"), of Unitrode Corporation, a Maryland corporation ("Unitrode"), the principal executive office of which is located at Eight Suburban Park Drive, Billerica, Massachusetts 01821. Item 2. Identity and Background. This statement is filed by AlliedSignal Inc., a Delaware corporation ("AlliedSignal"), successor by merger to The Signal Companies, Inc., a Delaware corporation ("Signal"). It amends and restates Signal's Schedule 13D filing made on July 2, 1980, as amended by Signal's Amendment No. 1 filed October 7, 1980 and Amendment No. 2 filed January 24, 1984, and as amended by AlliedSignal's Amendment No. 3 filed April 23, 1993, Amendment No. 4 filed September 17, 1993, Amendment No. 5 filed March 31, 1994 and Amendment No. 6 filed July 6, 1994. AlliedSignal is a diversified manufacturing company with businesses in aerospace, automotive and engineered materials. AlliedSignal's principal office is located at 101 Columbia Road, Morristown, New Jersey 07962-2497. Schedule A to this statement sets forth with respect to each executive officer and director of AlliedSignal the following information: (a) name; (b) business address; and (c) present principal occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted. All of such persons are U.S. citizens except for Hans B. Amell (Sweden) and Paul R. Schindler (France). Neither AlliedSignal nor, to the best knowledge of AlliedSignal, any person listed on Schedule A hereto has during the last five years (a) been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors) or (b) has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting activity subject to, federal or state securities laws or finding any violation with respect to such laws. Item 3. Source and Amount of Funds or Other Consideration. Signal purchased a total of 2,585,700 shares of Unitrode Common Stock (the number is adjusted for subsequent stock splits) in 1980 for a total purchase price of $22,257,918. The funds were obtained from a combination of cash on hand at Signal or one of its subsidiaries and short- term bank credit. All of these shares have now been sold. Item 4. Purpose of Transaction. Signal acquired the Unitrode Common Stock referred to in Item 3 in 1980 for the purpose of obtaining a substantial minority interest in Unitrode. At the time it completed its purchases, Signal owned approximately 23.6% of the class of Unitrode Common Stock. In April 1993, in Amendment No. 3 to this statement, AlliedSignal reported that although it had no specific plans to dispose of the shares of Unitrode Common Stock covered by this statement, the shares were not a strategic investment and sales might be made at any time, in one or more transactions, subject to the terms of the agreement with Unitrode referred to in Item 6 of this statement. Page 3 of 5 Commencing in January 1984 the shares of Unitrode Common Stock covered by this statement were held on deposit by The First National Bank of Boston, as escrow agent under an escrow agreement, dated as of January 15, 1984 (the "Escrow Agreement"), filed as Exhibit B to Amendment No. 2 to this statement. The shares were held for exchange at the election of holders of Signal's 8% Subordinated Exchangeable Debentures due 2009 (the "Debentures"). Voting rights with respect to such shares were exercisable by the holders of the Debentures. To the extent voting instructions were not received from the holders of the Debentures, the shares of Unitrode Common Stock were to be voted in proportion to the votes actually cast by the holders of all outstanding shares voting on such matter. In April 1993 AlliedSignal redeemed all of the outstanding Debentures, and the rights of the holders to exchange Debentures for Unitrode Common Stock terminated. AlliedSignal reacquired the power to vote and to dispose of the 2,585,700 shares of Unitrode Common Stock, none of which had been issued upon exchange of Debentures. Item 5. Interest in Securities of the Issuer. See Items 7 through 13 of the cover page of this statement for the aggregate number and percentage of the class of Unitrode Common Stock beneficially owned by AlliedSignal. From August 1993 through September 1994 AlliedSignal reduced its beneficial ownership of Unitrode Common Stock in sales transactions as follows: Type of Approximate Percentage of Date No. Shares Sold Transaction Class Owned After Sale 8/6/93 124,000 NYSE/Rule 144 19.7% 8/30/94 500,000 Private Sale to Unitrode 16.3% 7/1/94 500,000 Private Sale to Unitrode 12.6% 9/19/94 111,700 NYSE/Rule 144 11.6% On April 21, 1995 AlliedSignal sold 500,000 shares to Unitrode, in a privately negotiated transaction at a price of $19.63 per share. This sale reduced AlliedSignal's beneficial ownership of Unitrode Common Stock to approximately 7.7%. On April 24, 1995 AlliedSignal sold its remaining 850,000 shares of Unitrode Common Stock, in a privately negotiated transaction in the third market, reported in New York Stock Exchange composite transactions, at a net price of $19.325 per share, reducing its beneficial ownership of Unitrode Common Stock to zero. Item 6. Contracts, Arrangement, Understandings or Relationships. AlliedSignal and Unitrode entered into an Agreement, dated as of September 10, 1993, filed as Exhibit A to Amendment No. 4 to this statement (the "New Unitrode Agreement"), providing for (i) certain rights of first refusal of the shares of Unitrode Common Stock held by AlliedSignal and (ii) AlliedSignal's right to request registration of shares of the Unitrode Common Stock under the Securities Act of 1933, in each case until December 31, 1995. The New Unitrode Agreement extended mutual rights granted under a prior agreement between Signal and Unitrode. Page 4 of 5 Signature After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: April 24, 1995 ALLIEDSIGNAL INC. By: /s/ Peter M. Kreindler ---------------------------- Peter M. Kreindler Senior Vice President, General Counsel and Secretary Page 5 of 5 Schedule A AlliedSignal Inc. Directors with Titles & Businesses Becherer, Hans W. Deere & Company Chairman and John Deere Road Chief Executive Officer Moline, IL 61265-8098 309-765-4114 Bossidy, Lawrence A. AlliedSignal Inc. Chairman of the Board and 101 Columbia Road Chief Executive Officer Morristown, NJ 07962 201-455-6551 Covert, Eugene E. Massachusetts Institute of Technology T. Wilson Professor of Aeronautics 77 Massachusetts Avenue Bldg. 33, Room 215 Cambridge, MA 02139 617-253-2604 Fudge, Ann M. Kraft Foods, Inc. and Executive Vice President Maxwell House Division General Manager 250 North Street White Plains, NY 10625 914-335-2413 Kelley, General Paul X. Cassidy & Associates Vice Chairman for Corporate 700 13th Street, N.W., Suite 400 Strategy Washington, D.C. 20005 202-824-6000 Luciano, Robert P. Schering-Plough Corporation Chairman and Chief Executive One Giralda Farms Officer Madison, NJ 07940 201-822-7440 Palmer, Russell E. The Palmer Group Chairman and Chief Executive 3600 Market Street, Suite 530 Officer Philadelphia, PA 19104 215-243-2590 Seidenberg, Ivan G. NYNEX Corporation Chairman and Chief Executive 1113 Westchester Avenue - Room 467 Officer White Plains, NY` 10604 914-644-6440 Sigler, Andrew C. Champion International Corporation Chairman and Chief Executive One Champion Plaza Officer Stamford, CT 06921 203-358-7324 Stafford, John R. American Home Products Corporation Chairman, President and Five Giralda Farms Chief Executive Officer Madison, NJ 07940-0874 201-660-5008 Stafford, Thomas P. General Technical Services, Inc. Consultant 4200 Perimeter Center Drive - Suite 102 Oklahoma City, OK 73112 405-947-1442 Winters, Robert C. The Prudential Insurance Company of Chairman Emeritus America 751 Broad Street Newark, NJ 07102-3777 201-802-7722 AlliedSignal Inc. Officers with Titles and Addresses Amell, Hans B. AlliedSignal Inc. Vice President - Marketing 101 Columbia Road Morristown, NJ 07962 201-455-4200 Barpal, Isaac R. AlliedSignal Inc. Senior Vice President and 101 Columbia Road Chief Technology Officer Morristown, NJ 07962 201-455-2001 Barter, John W. AlliedSignal Automotive Executive Vice President and 20650 Civic Center Drive President P. O. Box 5029 Southfield, MI 48086-5029 810-827-5660 Bossidy, Lawrence A. AlliedSignal Inc. Chairman of the Board and 101 Columbia Road Chief Executive Officer Morristown, NJ 07962 201-455-6551 Burnham, Daniel P. AlliedSignal Aerospace Executive Vice President and 2525 West 190th Street President Torrance, CA 90504-6099 310-512-3636 Callahan, Edward W. AlliedSignal Inc. Vice President - Health, Safety & 101 Columbia Road Environmental Sciences Morristown, NJ 07962 201-455-6118 Cole, Kenneth W. AlliedSignal Inc. Vice President - Government 1001 Pennsylvania Avenue, NW, Suite 700 Relations Washington, DC 20004 202-662-2670 D'Aloia, G. Peter AlliedSignal Inc. Vice President and Controller 101 Columbia Road Morristown, NJ 07962 201-543-2935 Garvey, Nancy A. AlliedSignal Inc. Vice President and Treasurer 101 Columbia Road Morristown, NJ 07962 201-455-4427 Kreindler, Peter M. AlliedSignal Inc. Senior Vice President, 101 Columbia Road General Counsel and Secretary Morristown, NJ 07962 201-455-5513 Poses, Frederic M. AlliedSignal Engineered Materials Executive Vice President and 101 Columbia Road President Morristown, NJ 07962 210-455-3500 Redlinger, Donald J. AlliedSignal Inc. Senior Vice President - 101 Columbia Road Human Resources and Communications Morristown, NJ 07962 201-455-3997 Schindler, Paul R. AlliedSignal Inc. Senior Vice President - Suite 3812-16, 38/F International Shell Tower, Times Square 1 Matheson Street Causeway Bay, Hong Kong 011-852-506-9009 201-455-6026 (Morristown) Schroeder, Richard P. AlliedSignal Inc. Vice President - Manufacturing 101 Columbia Road Morristown, NJ 07962 201-455-3468 Sierk, James E. AlliedSignal Inc. Senior Vice President - 101 Columbia Road Quality and Productivity Morristown, NJ 07962 201-455-2148 Stark, Raymond C. AlliedSignal Inc. Vice President - Materials 101 Columbia Road Management Morristown, NJ 07962 201-455-3131 Wallman, Richard F. AlliedSignal Inc. Senior Vice President and 101 Columbia Road Chief Financial Officer Morristown, NJ 07962 201-455-5107