SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _ _ _ _ _ _ _ _ _ _ _ _ FORM 6-K REPORT of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of: March 2003 Filtronic plc (Exact name of registrant as specified in charter) The Waterfront, Salts Mill Road, Saltaire, Shipley West Yorkshire BD18 3TT, UK (Address of principal executive offices) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F _ X _ Form 40-F _ _ _ Indicate by check mark whether the registrant by furnishing the information contained in the Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934 Yes _ _ _ No _ X _ <Page> Filtronic plc <Page> SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorised. Filtronic plc Date: March 3, 2003 By: /s/ Fiona Pick _ _ _ _ _ _ _ _ _ _ Name: Fiona Pick Title: Solicitor and Assistant Company Secretary 3 March 2003 FILTRONIC PLC BUYS IN $6.5M OF ITS 10% SENIOR NOTES AT A DISCOUNT TO PAR VALUE Filtronic plc ("Filtronic"), a leading global designer and manufacturer of customised microwave electronic subsystems, announces that it has bought in $6.5m of its 10% Senior Notes due 1 December 2005 at a discount to par value. These Notes will be cancelled leaving $103.6m of the Notes outstanding. Filtronic has now bought in and cancelled a total of $66.4m of the Notes, since 4 February 2002. ENDS For further information, please contact: Filtronic plc - 01274 530622 Professor David Rhodes Executive Chairman & CEO John Samuel Finance Director Binns & Co PR Ltd - 020 7786 9600 Peter Binns/Paul McManus Filtronic website: www.filtronic.com