Citigroup Inc - EPT Disclosure

RNS Number:1670R
Citigroup Inc
31 March 2008

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 Citigroup Global Markets Inc

Company dealt in Rio Tinto Ltd

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

Date of dealing 27 March 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 5 (0.00%) 0 (0.00%)

(2) Derivatives (other than options) (0.00%) (0.00%)

(3) Options and agreements to purchase/sell (0.00%) (0.00%)

Total 5 (0.00%) 0 (0.00%)

(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

Convertible Number Number
(%) (%)

(1) Relevant securities (0.00%) (0.00%)

(2) Derivatives (other than options) (0.00%) (0.00%)

(3) Options and agreements to purchase/sell (0.00%) (0.00%)

Total (0.00%) (0.00%)

(c) Rights to subscribe (Note 2)

Class of relevant security: Details

3. DEALINGS (Note 3)

(a) Purchases and sales

Purchase Number of securities Price per unit (Note 4)
USD (unless stated)

5,000 111.0753

Total 5,000

Sales Number of securities Price per unit (Note 4)
USD (unless stated)

5,000 110.7986

Total 5,000

(b) Derivatives transactions (other than options)

Product name, Long/short (Note 5) Number of securities (Note 6) Price per unit (Note 4)
e.g. CFD

(c) Options transactions in respect of existing securities

(i) Writing, selling, purchasing or varying

Product name, Writing, Number of Exercise Type, e.g. Expiry Option money
selling, securities to American,
e.g. call option purchasing, which the option Price (USD) European etc. date paid/received
varying etc. relates (Note 6) per unit (USD)
(C = call; (Note 4)

P = put)

(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

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.

Is a Supplemental Form 38.5(b) attached? (Note 8) NO

Date of disclosure 31 March 2008

Contact name Selina Campbell

Telephone number 028 90 409538

Name of offeree/offeror with which connected BHP Billiton plc

Nature of connection (Note 9) Corporate Broker/Financial Advisor

Notes

The Notes on Form 38.5(b) 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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