EPT Disclosure

22nd Jan 2008 11:31

Morgan Stanley Securities Ld(EPT)22 January 2008 DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS WITH RECOGNISED INTERMEDIARY STATUS DEALING IN A CLIENT-SERVING CAPACITY (Rule 38.5(a) of the Takeover Code) 1. KEY INFORMATION Name of exempt principal trader Morgan Stanley Securities Limited Company dealt in BHP Billiton Plc Class of relevant security to which the Ordinary Sharesdealings being disclosed relate (Note 1) Date of dealing 21 January 2008 2. DEALINGS (Note 2) (a) Purchases and sales Total number of securities purchased Highest price paid (Note 3) GBP Lowest price paid (Note 3) GBP 11,953,960 13.5402 12.2600 Total number of securities sold Highest price received (Note 3) GBP Lowest price received (Note 3) GBP 5,310,356 13.2700 12.2800 (b) Derivatives transactions (other than options) Product name, Long/short (Note 4) Number of securities (Note 5) Price per unit (Note 3) GBP e.g. CFDCFD LONG 9,922 12.3500CFD LONG 78,335 12.3500CFD LONG 24,365 12.3831CFD LONG 77,850 12.3831CFD LONG 28,870 12.9540CFD LONG 39,543 12.9540CFD SHORT 1,205 12.3831CFD LONG 843 12.4149CFD LONG 6,861 12.4149CFD LONG 2,000 12.6324CFD LONG 992 12.7385CFD LONG 23,944 12.7779CFD LONG 50,000 12.8747CFD LONG 108,857 12.9044CFD LONG 828 13.0790CFD SHORT 300,000 12.2984CFD SHORT 145,946 12.3515CFD SHORT 21,454 12.3515CFD SHORT 160,862 12.4365CFD SHORT 210,000 12.4869CFD SHORT 210,000 12.4869CFD SHORT 5,000 12.5062CFD SHORT 44,000 12.5412CFD SHORT 300,000 12.6990CFD SHORT 23,712 12.7442CFD SHORT 2,913 12.7442CFD SHORT 25,000 12.7823CFD SHORT 7,600 12.7823CFD SHORT 15,100 12.7823CFD SHORT 30,000 12.8082CFD SHORT 25,000 12.8101CFD SHORT 80,000 12.8870CFD SHORT 150,000 12.9880CFD SHORT 300,000 13.0152CFD SHORT 3,000 13.0239CFD SHORT 125,000 13.0260CFD SHORT 1,061 13.0315CFD SHORT 45,000 13.0820CFD SHORT 1,980 13.1626CFD SHORT 1,740 13.1626CFD SHORT 6,280 13.1626CFD SHORT 828 13.2023CFD SHORT 252 13.2065CFD SHORT 150,000 13.5403 (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product name, Writing, selling, Number of securities Exercise Type, e.g. Expiry Option money purchasing, to which the option American,e.g. call option varying etc. relates (Note 5) price European etc. date paid/received per unit (Note 3) CALL OPTION SELLING 1,500,000 1300.0000 AMERICAN 20/03/2008 1.1500PUT OPTION SELLING 1,500,000 1300.0000 AMERICAN 20/03/2008 1.2000PUT OPTION PURCHASING 390,000 1100.0000 AMERICAN 20/03/2008 0.4300PUT OPTION PURCHASING 260,000 1100.0000 AMERICAN 20/03/2008 0.4350CALL OPTION SELLING 260,000 1450.0000 AMERICAN 20/03/2008 0.5550CALL OPTION SELLING 390,000 1450.0000 AMERICAN 20/03/2008 0.5600 (ii) Exercising Product name, e.g. call option Number of securities Exercise price per unit (Note 3) N/A N/A N/A 3. OTHER INFORMATION Agreements, arrangements or understandings relating to options or derivatives Full details of any agreement, arrangement or understanding between the person disclosing and any other person relatingto the voting rights of any relevant securities under any option referred to on this form or relating to the votingrights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form isreferenced. If none, this should be stated. NONE Date of disclosure 22 January 2008 Contact name Zafrhan Fahmy Telephone number 020 7677 1871 Name of offeree/offeror with which connected Rio Tinto PlcNature of connection (Note 6) Advisor Notes The Notes on Form 38.5(a) can be viewed on the Takeover Panel's website atwww.thetakeoverpanel.org.uk This information is provided by RNS The company news service from the London Stock Exchange

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