SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 --------------- SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a) (Amendment No. 4)(1) Bookham Technology plc -------------------------------------------------------------------------------- (Name of Issuer) Ordinary Shares, par value one third pence per share, and American Depositary Shares evidenced by American Depositary Receipts, each representing one Ordinary Share -------------------------------------------------------------------------------- (Title of Class of Securities) 09856Q108 -------------------------------------------------------------------- (CUSIP Number) Deborah J. Noble Corporate Secretary Nortel Networks Corporation 8200 Dixie Road, Suite 100 Brampton, Ontario L6T 5P6 Canada (905) 863-1103 -------------------------------------------------------------------------------- with a copy to: Paul J. Shim, Esq. Cleary, Gottlieb, Steen & Hamilton One Liberty Plaza New York, New York 10006 212-225-2000 -------------------------------------------------------------------------------- (Name, Address and Telephone Number of Persons Authorized to Receive Notices and Communications) June 22, 2004 -------------------------------------------------------------------- (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 that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box. 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(b) for other parties to whom copies are to be sent. (Continued on the following pages) (1) 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 purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange 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. 09856Q108 ------------------- 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Nortel Networks Corporation 62-12-62580 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 ITEM 2(d) or 2(e) [ ] 6 CITIZENSHIP OR PLACE OF ORGANIZATION Canada 7 SOLE VOTING POWER 50,526,315* NUMBER OF SHARES 8 SHARED VOTING POWER BENEFICIALLY OWNED BY EACH REPORTING PERSON N/A WITH 9 SOLE DISPOSITIVE POWER 50,526,315* 10 SHARED DISPOSITIVE POWER N/A 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 50,526,315* 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES [ ] 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 14.62%* 14 TYPE OF REPORTING PERSON CO * Calculated, pursuant to Exchange Act Rule 13(d)(1)(i), on the basis of (a) the 326,125,550 Ordinary Shares of Bookham outstanding on June 15, 2004, as advised by Bookham management, (b) the 31,000,000 Ordinary Shares of Bookham that Nortel currently holds, (c) the 9,000,000 Ordinary Shares underlying Warrants and (d) the 10,526,316 Ordinary Shares to be beneficially owned following the consummation of the transaction described in Item 4. Pursuant to Rule 13d-2(a) of Regulation 13D-G of the General Rules and Regulations under the Exchange Act, Nortel Networks Corporation ("Nortel Networks") hereby amends its statement on Schedule 13D, dated October 17, 2002 (the "Schedule 13D"), as amended by Amendment No. 1 dated November 7, 2002, by Amendment No. 2 dated November 8, 2002 and by Amendment No. 3 dated July 3, 2003 relating to the ordinary shares, par value one third pence per share (the "Ordinary Shares"), of Bookham Technology plc, a corporation organized under the laws of England and Wales ("Bookham"). Unless otherwise indicated, all defined terms used herein shall have the same meanings ascribed to them in the Schedule 13D. Item 2. Identity and Background. Schedule I to the Schedule 13D is hereby replaced in its entirety with Schedule I to this Schedule. Item 4. Purpose of Transaction Item 4 is hereby amended by inserting the following paragraph after the final paragraph thereof: On June 24, 2004, Bookham announced that it and Nortel Networks Optical Components Limited, a subsidiary of Nortel Networks ("NNOCL"), had entered into an Exchange Agreement, dated as of June 22, 2004, a copy of which is filed herewith as Exhibit 1. Pursuant to the Exchange Agreement, NNOCL agreed to exchange its $20,000,000 Senior Unsecured Note Due 2007 (the "Note") issued by Bookham for a $20,000,000 Senior Unsecured Convertible Note Due 2007 (the "Convertible Note") to be issued to NNOCL by a newly formed U.S. parent company ("Newco") of Bookham (the form of which Convertible Note is set forth in Exhibit A to the Exchange Agreement filed herewith). The terms of the Convertible Note are similar to those of the Note, except that the issuer will be Newco, rather than Bookham, and the holder of the Convertible Note is entitled to convert the Convertible Note into shares of common stock of Newco at a conversion price equal to ninety (90%) percent of the average closing price per share of Newco common stock on The NASDAQ National Market, or any other principal securities exchange or trading market where the common stock is then listed or trading, for the three (3) trading days preceding the conversion date, but at no time less than $19.00 per share, subject to adjustment as provided in the Exchange Agreement. The parties' obligations under the Exchange Agreement are subject to Bookham's reincorporation in the U.S. pursuant to a scheme of arrangement (the "Scheme") by which Newco will become the parent company of Bookham. NNOCL and Bookham have also agreed and consented to the assignment of the Relationship Deed dated November 8, 2002 among Nortel Networks, certain of its subsidiaries and Bookham, by Bookham to Newco on the effective date of the Scheme, pursuant to a Deed of Assignment (the "Deed of Assignment") (the form of which Deed of Assignment is set forth in Exhibit B to the Exchange Agreement filed herewith). The Deed of Assignment will provide that the provisions of the Relationship Deed, including restrictions on the ability of Nortel Networks and its subsidiaries to exercise their voting rights as holders of shares, will apply mutatis mutandis to Newco. Item 5. Interest in Securities of the Issuer. Paragraphs (a) and (b) of Item 5 are hereby amended and restated in their entirety as follows: (a) - (b) At the date hereof, Nortel Networks beneficially owns 50,526,315 Ordinary Shares, representing approximately 14.62% of the outstanding Ordinary Shares. Except as set forth in this Item 5, none of Nortel Networks or, to the best of Nortel Networks' knowledge, any of the individuals named in Schedule I hereto beneficially owns any Ordinary Shares of Bookham. Item 6. Contracts, Arrangements, Understanding or Relationships with Respect to Securities of Bookham. Except as provided in this Statement, neither Nortel Networks nor, to the best of Nortel Networks' knowledge, any of the individuals named in Schedule I hereto has any contracts, arrangements, understandings or relationships (legal or otherwise) with any person with respect to any securities of Bookham, including, but not limited to, transfer or voting of any securities, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees or profits, division of profits or loss, or the giving or withholding of proxies. Item 7. Material to be Filed as Exhibits. Exhibit 1 -- Exchange Agreement, dated June 22, 2004, between Nortel Networks Optical Components Limited and Bookham Technology plc (including forms of the Series A-1 Senior Unsecured Convertible Note Due 2007 and the Deed of Assignment, attached thereto as Exhibits A and B, respectively). 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: June 24, 2004 NORTEL NETWORKS CORPORATION /s/ Katharine B. Stevenson ---------------------------- By: Katharine B. Stevenson Title: Treasurer /s/ Deborah J. Noble ---------------------------- By: Deborah J. Noble Title: Corporate Secretary SCHEDULE I NORTEL NETWORKS CORPORATION DIRECTORS AND EXECUTIVE OFFICERS The name, citizenship, present principal occupation or employment, and the name of any corporation or other organization in which such employment is conducted, of each of the directors and executive officers of Nortel Networks Corporation is set forth below. Unless otherwise indicated below, the business address of each director and executive officer is Nortel Networks Corporation, 8200 Dixie Road, Suite 100, Brampton, Ontario L6T 5P6, Canada. Name and Citizenship Principal Occupation and Address -------------------- -------------------------------- Directors Dr. Manfred Bischoff Chairman of the Board German EADS N.V. Willy-Messerschmitt-Straae, Tor 1 85521 Ottobrunn Germany James Johnston Blanchard Piper Rudnick LLP American 1200 19th Street, N.W., 6th Floor Washington, D.C. 20036-2412 U.S.A Robert Ellis Brown Chairman of the Board Canadian/British Air Canada Air Canada Centre 1275 7373 Cote Vertu West Montreal, Quebec, H4Y 1H4 Canada John Edward Cleghorn, O.C., F.C.A. Chairman of the Board Canadian SNC-Lavalin Group Inc., 31st Floor 200 Bay Street, South Tower, Suite 3115 Royal Bank Plaza Toronto, Ontario M5J 2J5 Canada Robert A. Ingram Vice Chairman Pharmaceuticals American Glaxo Smith Kline plc 5 Moore Drive Mail Stop H50 2032 Research Triangle Park North Carolina, 27709 U.S.A L. Yves Fortier, O.C., Q.C. Chairman & Senior Partner Canadian Ogilvy Renault 1981 McGill College Avenue, 12th Floor Montreal, Quebec H3A 3C1 Canada The Hon. John P. Manley, P.C. Senior Counsel Canadian McCarthy Tetrault LLP The Chambers Suite 1400, 40 Elgin Street Ottawa, Ontario K1P 5K6 Canada William Arthur Owens President and Chief Executive Officer American Nortel Networks 8200 Dixie Road, Suite 100 Brampton, Ontario L6T 5P6 Canada Guylaine Saucier, C.M., F.C.A. Corporate Director Canadian 1170 Peel Street 4th Floor Montreal, Quebec H3B 4S8 Canada Sherwood Hubbard Smith, Jr. Chairman Emeritus American CP&L One Hannover Square Building 421 Fayetteville Street Mall Raleigh, N.C. 27601 U.S.A. Lynton Ronald Wilson, O.C. Chairman of the Board Canadian Nortel Networks 8200 Dixie Road, Suite 100 (Chairman of the Board of Nortel Networks Brampton, Ontario L6T 5P6 Corporation) Canada and 483 Bay Street Floor 7, North Tower Toronto, Ontario M5G 2C9 Canada Officers William Arthur Owens President and Chief Executive Officer American William Robert Kerr Chief Financial Officer Canadian Nicholas John DeRoma Chief Legal Officer American D. Gregory Mumford Chief Technology Officer Canadian Albert Roger Hitchcock Chief Information Officer U.K. Pascal Debon President, Wireless Networks French Chahram Bolouri President, Global Operations Canadian Brian William McFadden President, Optical Networks Canadian Stephen Charles Pusey President, Europe, Middle East and Africa U.K. Susan Louise Spradley President, Wireline Networks American Masood Ahmad Tariq President, Global Alliances American/Canadian Malcolm Kevin Collins President, Enterprise Networks U.K. Steven Leo Schilling President, Enterprise Accounts American Robert Yu Lang Mao President and Chief Executive Officer, Greater China American Dion Constandino Joannou President, CALA American John Joseph Giamatteo President, Asia Pacific American William John Donovan Senior Vice-President, Human Resources American MaryAnne Elisabeth Pahapill Controller Canadian Katharine Berghuis Stevenson Treasurer Canadian/American Deborah Jean Noble Corporate Secretary Canadian John Marshall Doolittle Vice President, Tax Canadian Blair Fraser Morrison Assistant Secretary Canadian Gordon Allan Davies Assistant Secretary Canadian Karen Elizabeth Sledge Assistant Controller American