Credit Suisse Sydney - EPT Disclosure

RNS Number:1863R
Credit Suisse Sydney Branch
31 March 2008

FORM 38.5 (b)

DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS
WITHOUT RECOGNISED INTERMEDIARY STATUS, OR WITH RI STATUS
BUT NOT DEALING IN A CLIENT-SERVING CAPACITY
(Rule 38.5(b) of the Takeover Code)

1. KEY INFORMATION

Name of exempt principal trader Credit Suisse Sydney branch

Company dealt in Rio Tinto Limited

Class of relevant security to which the dealings being Ordinary Shares
disclosed relate (Note 1)

Date of dealing 28-03-2008

2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 2)
Long Short
Number (%) Number (%)
(1) Relevant securities 68,104 0.015 2,784,384 0.609
(2) Derivatives (other than options)
(3) Options and agreements to purchase/sell 0 0 70,700 0.015

Total 68,104 0.015 2,855,084 0.625

(b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note
2)
Class Of Relevant Security Long Short
(1) Relevant Securities
(2) Derivatives (other than options)
(3) Options and agreements to purchase/sell
Total

(c) Rights to subscribe (Note 2)
Class of relevant security: Details

3. DEALINGS (Note 3)
(a) Purchases and sales
Purchase/Sale Number of securities Price per unit (Note 4)

NIL

(b) Derivatives transactions (other than options)
Product name, e.g. CFD Long/short (Note 5) Number of securities (Note 6) Price per unit (Note 4)

(c) Options transactions in respect of existing securities
(i) Writing, selling, purchasing or varying
Product Writing, selling, Number of securities to Exercise Type, e.g. Expiry Option money paid/
name,e.g. purchasing, which the option relates price American, date received per unit
call option varying etc. (Note 6) European etc. (Note 4)

(ii) Exercising
Product name, e.g. call option Number of securities Exercise price per unit (Note 4)

(d) Other dealings (including new securities) (Note 3)
Nature of transaction (Note 7) Details Price per unit (if applicable) (Note 4)

4. OTHER INFORMATION
Agreements, arrangements or understandings relating to options or derivatives
NONE

Is a Supplemental Form 38.5(b) attached? (Note 8) YES

Date of disclosure 31-March-2008

Contact name Collins, Carolyn

Telephone number 44 20 7888 0241

Name of offeree/offeror with which connected Rio Tinto Plc

Nature of connection (Note 9) ADVISOR

DETAILS OF OPEN POSITIONS

Product Description Written/Purchased No. of Securities Exercise Price Type Expiry Date
Put Option PURCHASED 35,700 68.66 American Sep 24 2009
Put Option PURCHASED 5,000 70.00 American Jun 26 2008
Put Option PURCHASED 30,000 72.00 American Jun 26 2008

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

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