CATCo Regulatory News (CAT)

23 May 2006 16:29

State Street Global Advisors23 May 2006 FORM 8.3DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE(Rule 8.3 of the City Code on Takeovers & Mergers) 1. KEY INFORMATION Name of Person State Street Dealing (Note 1) Global AdvisorsCompany Dealt In Cambridge Antibody Technology Group PLCClass of Relevant Security Ord to Which the Dealings Being Disclosed Relate (Note 2)Date of Dealing 22/05/2006 2. INTERESTS, SHORT POSITIONS & RIGHTS TO SUBSCRIBE (a) Interests & Short Positions (following dealing) in the Class of Relevant Security Dealt In (Note 3) Class of Relevant Security: Long Short Number % Number %(1) Relevant Securities 1228973 2.32716(2) Derivatives 31466 0.05958 0 0.00000 other than options(3) Options & Agreements to Purchase/SellTotal 1260439 2.38674 0 0.00000 (b) Interests & Short Positions in Relevant Securities of the Company (ex.Class Dealt In) (Note 3) Class of Relevant Security: Long Short Number % Number %(1) Relevant Securities(2) Derivatives other than options(3) Options & Agreements to Purchase/SellTotal (c) Rights to Subscribe (Note 3) Class of Relevant Security: Details 3. DEALINGS (Note 4) (a) Purchases & Sales Purchase / Number of PriceSale Securities per Unit SELL 2176 12.92SELL 1509 12.92 (b) Derivatives Transactions (other than options) Product Name (e.g. CFD) Long/Short No./Securites Price/Unit (Note 6) (Note 7) (Note 5) (c) Options Transactions in Respect of Existing Securities (i) Writing, Selling, Purchasing or Varying Product Name Write,Sell No/Securities Exercise Type(eg call option) Purchasing, Which the Price (e.g. USA, Varying etc. Optn Relates European etc) Relates-Note7 Expiry Date Option Money Paid/Received per Unit (Note 5) (ii) Exercising Product Name Number of Exercise(eg call option) Securities Price per Unit (Note 5) (d) Other Dealings (including new securities) (Note 4) Nature of Transaction Details Price / Unit(Note 8) if applicable (Note 5) 4. OTHER INFORMATION (a)Agreements, Arrangements or Understandings Relating to Options or DerivativesFull details of any agreement, arrangement or understanding between the persondisclosing & any other person relating to the voting rights of any relevantsecurities under any option referred to on this form or relating to the votingrights or future acquisition or disposal of any relevant securities to whichany derivative referred to on this form is referenced.If none, this should be stated. Is a Supplemental Form 8 Attached? (Note 9) NO Disclosure Date 23/05/2006Contact Name Peter ShumTelephone Number 020 7698 6132If Connected EFM N/A Name of Offeree/Offeror With Which ConnectedIf Connected EFM N/A State Nature of Connection (Note 10) Notes:The Notes on Form 8.3 can be viewed on theTakeover Panel's website at www.thetakeoverpanel.org.uk This information is provided by RNS The company news service from the London Stock Exchange