Notification of Shareholding

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Aminex PLC

2. Reason for the Notification -(please tick the appropriate box or boxes)

An acquisition or disposal of voting rights

yes

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

no

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

no

An event changing the breakdown of voting rights

no

Other (please specify): acquired shares in placing

yes

3. Full name of person(s) subject to the notification obligation:

JP Morgan Chase & Co

4. Full name of shareholder(s) (if different from 3.):

JP Morgan Asset Management (UK) Limited

5. Date of the transaction (and date on which the threshold is crossed or reached):

24 July 2009

6. Threshold(s) that is/are crossed or reached

4%, 5%, 6%, 7%, 8%

7. Notified details:

A: Voting rights attached to shares

Class/type of shares

If possible using the ISIN CODE

Situation previous to the Triggering transaction 

Resulting situation after the triggering transaction 

Number of Shares

Number of Voting Rights 

Number of shares

Number of voting rights 

% of voting rights

Direct

Direct 

Indirect 

Direct

Indirect

IE0003073255

9,644,166

9,644,166

0

30,798,333

0

8.592%

SUBTOTAL A (based on aggregate voting rights)

30,798,333

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date 

Exercise / Conversion Period / Date 

Number of voting rights that may be acquired if the instrument is exercised / converted.

% of voting rights

Nil

SUBTOTAL B (in relation to all expiration dates)

Nil

Total (A+B)

Number of voting rights

Number of voting rights

% of voting rights

30,798,333

30,798,333

8.592%

8. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable:

Total disclosable holding for JPMorgan Chase & Co.: 30,798,333 (8.592%)

Holdings by controlled undertakings of JPMorgan Chase & Co. are as follows:

JPMorgan Asset Management (UK) Limited: 30,798,333 (8.592%)

28 July 2009

Enquiries: 

Aminex plc

Brian Hall 

+44(0) 20 7291 3100

Pelham PR

Archie Berens

+44(0) 207 337 1509