Transaction in Own Shares

Genus PLC 16 December 2004 Genus plc (the 'Company') Treasury Shares The Company is pleased to announce that it has today placed with institutions 2,289,444 ordinary shares of 10p each at 252.5p per share. 1,589,974 of the placed shares had been held as Treasury Shares following the market purchases to satisfy the voluntary buy-back scheme aimed at small shareholders, announced in the interim results released on the 17 November 2004. The Company no longer holds any Treasury shares. 699,470 shares of the placed shares represent the exercise of share options by employees granted under the Company's 1999 Executive Plan and under the 2000 Company Share Plan. Of this number, 194,837 shares were placed on behalf of Richard Wood, who has today exercised his share options at 90p per share. Following this placing, Richard Wood will hold 195,200 options which have vested and his current holding is 59,400 shares, equating to 0.159% of the issued share capital. Application has been made for the admission to trading on AIM of 699,470 ordinary shares of 10p each. These shares have been allotted pursuant to the exercise of share options on the above named schemes and rank pari passu in all respects with the existing issued share capital which now totals 37,261,012 shares. 16 December 2004 Enquiries: Genus plc Richard Wood, Chief Executive, Genus plc Tel: 01256 347101 David Timmins, Group Finance Director, Genus plc Panmure Gordon Edward Farmer, Director Tel: 020 7187 2047 Marianne Woods, Director Tel: 020 7187 2460 This information is provided by RNS The company news service from the London Stock Exchange