UBS AG (EPT) - EPT Disclosure

RNS Number:0726S
UBS AG (EPT)
10 April 2008

FORM 38.5(a)

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 UBS AG London Branch
Company dealt in Rio Tinto PLC
Class of relevant security to which the Ordinary 10p
dealings being disclosed relate (Note 1)

Date of dealing 09 APRIL 2008

2. DEALINGS (Note 2)

(a) Purchases and sales

Total number of securities Highest price paid Lowest price paid
purchased (Note 3) (Note 3)

348,335 60.60 GBP 57.99 GBP

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

685,531 60.57 GBP 57.8032 GBP

(b) Derivatives transactions (other than options)

Product name, Long/short Number of securities Price per unit
e.g. CFD (Note 4) (Note 5) (Note 3)

CFD LONG 23,800 57.8032 GBP
CFD LONG 66,336 58.4668
CFD SHORT 50,000 58.47354
CFD LONG 35,000 59.1317
CFD LONG 21,356 59.2391
CFD LONG 181,976 59.267
CFD SHORT 18,442 59.43261
CFD SHORT 1,558 59.43261001
CFD LONG 90,000 59.5884
CFD LONG 147,400 60
CFD SHORT 147,400 60
CFD LONG 110,000 60.219213
CFD SHORT 4,032 60.3364
CFD SHORT 11,000 60.3665
CFD SHORT 5,499 60.52166572
CFD SHORT 178 60.52166573

(c) Options transactions in respect of existing securities

(i) Writing, selling, purchasing or varying

Product Writing, Number of Exercise Type, e.g. Expiry date Option
name,e.g selling, securities price American, moneypaid/received
call purchasing, to which the European etc. per unit (Note 3)
option varying etc option
relates
(Note 5)

CALL PURCHASING 1,000 6000 PENCE AMERICAN 30/04/2008 200 PENCE
CALL PURCHASING 8,000 6400 PENCE AMERICAN 31/05/2008 140 PENCE
CALL PURCHASING 2,000 6400 PENCE AMERICAN 30/06/2008 280 PENCE

(ii) Exercising

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

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.

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Date of disclosure 10 APRIL 2008
Contact name NIMISHA SACHDEV
Telephone number 020 7568 9289
Name of offeree/offeror with which BHP Billiton PLC
connected
BHP Billiton LTD
Nature of connection (Note 6) CONNECTED ADVISER

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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