2014-04-08

TR-1 Notification of Major Interest in Shares

For filings with the FCA include the annex                     
For filings with issuer exclude the annex                      

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES(i)
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1. Identity of the issuer or the underlying issuer Tethys Petroleum Limited of existing shares to which voting rights are attached: (ii)
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2. Reason for the notification (please tick the appropriate box or boxes):
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An acquisition or disposal of voting rights                             YES
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An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached
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An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments            
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An event changing the breakdown of voting rights                                                                      
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Other (please specify):                                                                                               
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3. Full name of person(s) subject to the notification obligation: (iii)
JPMorgan Asset Management Holdings Inc
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4. Full name of shareholder(s) China International Fund Management Co. Ltd.
 (if different from 3.):(iv)    JPMorgan Investment Management Inc
                                JPMorgan Asset Management (Taiwan) Limited
                                JPMorgan Asset Management (UK) Limited
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5. Date of the transaction and date on                      1 April 2014
which the threshold is crossed or
reached: (v)
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6. Date on which issuer notified:                           3 April 2014
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7. Threshold(s) that is/are crossed or                      10% upwards
reached: (vi) (vii)
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8. Notified details:
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A: Voting rights attached to shares (viii) (ix)
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Class/type of          Situation previous        Resulting situation after 
shares                 to the triggering         the triggering transaction
                       transaction
if possible using      ------------------------------------------------------
the ISIN CODE
                Number     Number     Number       Number       % of voting 
                of         of         of shares    of voting    rights (x)
                Shares     Voting                  rights
                           Rights     ---------------------------------------
                                     Direct  Direct Indirect  Direct Indirect
                                             (xi)   (xii)
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KYG876361091  25,207,670  25,207,670  N/A     N/A  30,075,676  N/A   10.04%

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B: Qualifying Financial Instruments
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Resulting situation after the triggering transaction
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Type of    Expiration     Exercise/     Number of voting       % of voting
financial  date (xiii)    Conversion    rights that may be     rights
instrument                Period (xiv)  acquired if the
                                        instrument is
                                        exercised/converted
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N/A        N/A              N/A         N/A                     N/A
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C: Financial Instruments with similar economic effect to Qualifying Financial Instruments (xv) (xvi)
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Resulting situation after the triggering transaction
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Type of     Exercise  Expiration  Exercise/   Number of         % of voting  
financial   price     date        Conversion  voting rights     rights
instrument            (xvii)      period      instrument        (xix) (xx)                    
                                  (xviii)     refers to
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N/A         N/A        N/A       N/A          N/A               Nominal Delta

                                                                N/A     N/A
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Total (A+B+C)
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Number of voting rights                           Percentage of voting rights
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30,075,676                                        10.04%
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9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: (xxi)
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Total disclosable holding for 
JPMorgan Asset Management Holdings Inc: 30,075,676 (10.04%)
China International Fund Management Co. Ltd.
J.P. Morgan Investment Management Inc.
JPMorgan Asset Management (Taiwan) Limited
JPMorgan Asset Management (UK) Limited: 29,083,162 (9.71%)
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Proxy Voting:
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10. Name of the proxy holder:                                                                      N/A
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11. Number of voting rights proxy holder will cease to hold:                                       N/A

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12. Date on which proxy holder will cease to hold voting rights:                                   N/A

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13. Additional information:                                   N/A
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14. Contact name:                                             Daniel J Swart
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15. Contact telephone number:                                 020 7134 6168
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