Amendment of Share Options

30 May 2012

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

Amendment of Share Options 

As a result of the continued development of Amerisur, including the ongoing drilling work at Platanillo and new investment opportunities being presented to the Board, the Company has been in a 'close period' for the purposes of Rule 21 of the AIM Rules for Companies for most of the current calendar year and continuously since 11 February 2012.

The result of this has been to restrict those directors who hold options under the Company's share option scheme from exercising their options in accordance with their terms.

In order to allow those directors who have been unable to exercise their share options in accordance with the intent of the Remuneration Committee when the options were originally granted, the Remuneration Committee has agreed to extend the exercise period of those options held by directors which are due to expire on 31 May 2012 by five months to 31 October 2012.

ENQUIRIES: