REG-Wellington Management Rule 8.3 - Xstrata plc

BOSTON--(Business Wire)--

FORM 8.3

DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE

(Rule 8.3 of the City Code on Takeovers and Mergers)

1.KEY INFORMATION

Name of person dealing (Note 1) Wellington Management Company, LLP
Company dealt in Xstrata plc
Class of relevant security to which the dealings being disclosed relate (Note 2) Ordinary Shares
Date of dealing 26 August 2009

2.INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a)Interests and short positions (following dealing) in the class of relevant
security dealt in (Note 3)

Long Short
Number (%) Number (%)
(1) Relevant securities 56,330,829 shares (1.92 %)
(2) Derivatives (other than options)
(3) Options and agreements to purchase/sell
Total 56,330,829 shares (1.92 %)

(b)Interests and short positions in relevant securities of the company, other
than the class dealt in (Note 3)

Class of relevant security: Long Short
Number (%) Number (%)
(1) Relevant securities
(2) Derivatives (other than options)
(3) Options and agreements to purchase/sell
Total

(c)Rights to subscribe (Note 3)

Class of relevant security: Details

3.DEALINGS (Note 4)

(a)Purchases and sales

Purchase/sale Number of securities Price per unit (Note 5)
Purchase 2,557 shares 8.6150 - GBP

(b)Derivatives transactions (other than options)

Product name, Long/short (Note 6) Number of securities (Note 7) Price per unit (Note 5)
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
e.g. call option selling, securities to price American, date paid/received
purchasing, which the option European per unit (Note
varying etc. relates (Note 7) etc. 5)

(ii)Exercising

Product name, e.g. call option Number of securities Exercise price per unit (Note 5)

(d)Other dealings (including new securities) (Note 4)

Nature of transaction (Note 8) Details Price per unit (if applicable)(
)(Note 5)

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.
None

Is a Supplemental Form 8 attached? (Note 9) NO

Date of disclosure 27 August 2009
Contact name Robert J. Toner
Telephone number (617) 790-7084
If a connected EFM, name of offeree/offeror with which connected N/A
If a connected EFM, state nature of connection (Note 10) N/A

Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel`s website at
www.thetakeoverpanel.org.uk

Wellington Management

Copyright Business Wire 2009

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