UBS AG (EPT) - EPT Disclosure

RNS Number:2820M
UBS AG (EPT)
22 January 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 21 JANUARY 2008

2. DEALINGS (Note 2)

(a) Purchases and sales

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

707,907 4750.7508 pence 4271.7130 pence

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

1,676,981 4710.56 pence 4228 pence

(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 25,000 42.697662 GBP
CFD SHORT 60,000 42.71713
CFD LONG 59,067 42.71920006
CFD LONG 20,000 42.73
CFD LONG 10,000 42.7712
CFD SHORT 20,000 42.8
CFD SHORT 120,524 43.070133
CFD LONG 100,000 43.4527
CFD LONG 175,000 43.5349
CFD LONG 200,000 43.5765
CFD LONG 120,524 43.705
CFD SHORT 25,000 43.7446
CFD LONG 30,155 43.7643
CFD LONG 50,000 43.7765
CFD LONG 225,000 43.8661
CFD SHORT 100,000 44
CFD LONG 17,392 44.1791
CFD SHORT 14,181 44.21619984
CFD LONG 100,000 44.411
CFD LONG 21,913 44.94319719
CFD SHORT 4,000 45.186
CFD LONG 326,760 47
CFD SHORT 326,760 47
CFD LONG 100,000 47.1056
CFD SHORT 150,000 47.507508

(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)

(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 22 JANUARY 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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