Grant of Share Options

20 January 2012

Amerisur Resources Plc ("Amerisur" or the "Company")

Grant of Share Options 

Amerisur Resources Plc, the oil and gas producer and explorer focused on South America, announces that on 19 January 2012 the Company's Remuneration Committee ("the Committee") which is comprised wholly of non-executive directors, granted options to directors and employees over 9,485,000 new ordinary shares of 0.1p each, representing 1.0 per cent of the current issued share capital, under the Long Term Incentive Plan ("LTIP") approved at the 2011 AGM. The Committee designed the LTIP in accordance with current best practice and with the intention of delivering appropriate awards to senior management on the delivery of exceptional corporate performance.

The LTIP is a new "longer-term" incentive plan replacing the old option scheme. It represents a key change to the current remuneration structure for the directors and, equally importantly, for those more junior members of Amerisur's management team, who are making important contributions to the creation of shareholder value who have been included in this award as indeed they were in the previous scheme.

The options are nil cost options which are eligible to vest over a three year period ("Vesting Period") subject to achieving performance levels which create value for shareholders. Vesting is on a sliding scale which depends upon the effective shareholder return during the Vesting Period:

Total Shareholder Return (p.a.) Level of Vesting (%)

20% (73% compound over three years) 100%

15% (52% compound over three years) 65%

10% (33% compound over three years) 35%

The total shareholder return ("TSR") target is calculated from a base price of the average closing share price in the 30 day period prior to the date of award, which was 17.38p. Options will vest during the Vesting Period when any of the three percentage thresholds for 3 year TSR is achieved for a 30 day period based on the average closing share price for that period.

There was no consideration paid upon the grant of the options and the options expire on the fifth anniversary of the grant.

8,250,000 options have been granted to Directors as follows:

* Dr Wardle's interests in his share options are held through his interest in Tracarta Ltd

ENQUIRIES: