Morgan Stanley Secs - EPT Disclosure

RNS Number:5768S
Morgan Stanley Securities Limited
17 April 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 Shares
dealings being disclosed relate (Note 1)

Date of dealing 16 April 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

2,714,459 18.6500 17.7000

Total number of securities sold Highest price received (Note 3) GBP Lowest price received (Note 3) GBP

2,130,118 18.6500 17.7000

(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. CFD
CFD LONG 261,800 17.9905
CFD LONG 18,200 17.9905
CFD LONG 200 17.9996
CFD LONG 811 18.0314
CFD LONG 1,421 18.0357
CFD LONG 257,332 18.0638
CFD LONG 73,258 18.1619
CFD LONG 2,983 18.1736
CFD LONG 1,774 18.1736
CFD LONG 2,658 18.1919
CFD LONG 176 18.2330
CFD LONG 20,000 18.4319
CFD LONG 10,370 18.4462
CFD LONG 857 18.4462
CFD LONG 15,800 18.6476
CFD LONG 7,100 18.6476
CFD LONG 87,009 18.6477
CFD LONG 75,868 18.6477
CFD SHORT 811 17.9122
CFD SHORT 1,421 17.9122
CFD SHORT 9,678 17.9228
CFD SHORT 200,000 17.9672
CFD SHORT 15,918 17.9672
CFD SHORT 6,000 17.9939
CFD SHORT 41,933 18.0163
CFD SHORT 10,690 18.0436
CFD SHORT 134,310 18.0436
CFD SHORT 365,690 18.0751
CFD SHORT 29,105 18.0751
CFD SHORT 20,000 18.1525
CFD SHORT 14,896 18.1608
CFD SHORT 7,100 18.1608
CFD SHORT 4,957 18.1654
CFD SHORT 27,000 18.2072
CFD SHORT 962 18.2156
CFD SHORT 2,496 18.2156
CFD SHORT 165 18.2156
CFD SHORT 689 18.2156
CFD SHORT 122 18.2156
CFD SHORT 142 18.2156
CFD SHORT 22 18.2156
CFD SHORT 7 18.2156
CFD SHORT 124 18.2637
CFD SHORT 1,497 18.2637
CFD SHORT 3,808 18.4694
CFD LONG 33,431 18.6500
CFD SHORT 48,546 18.3309
CFD SHORT 2,431 18.6500

(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)
GBP
N/A N/A N/A N/A N/A N/A N/A

(ii) Exercising

Product name, e.g. call option Number of securities Exercise price per unit (Note 3) GBP

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 relating
to the voting rights of any relevant securities under any option referred to on this form or relating to the voting
rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is
referenced. If none, this should be stated.

NONE

Date of disclosure 17 April 2008

Contact name Zafrhan Fahmy

Telephone number 020 7677 1871

Name of offeree/offeror with which connected Rio Tinto Plc
Nature of connection (Note 6) Advisor

Notes

The Notes on Form 38.5(a) can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk

This information is provided by RNS
The company news service from the London Stock Exchange
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