2012-04-12

Announcement of issue of equity pursuant to Block Listing

12 April 2012

Tethys Petroleum Limited

Announcement of issue of equity pursuant to Block Listing

GRAND CAYMAN, CAYMAN ISLANDS, Thursday, April 12th, 2012 - Tethys Petroleum Limited ("Tethys" or the "Company") (TSX:TPL)(LSE:TPL) announces that application has been made to the UK Listing Authority and the London Stock Exchange for a Block Listing of 39,636,297 Ordinary Shares of US$0.10 each in the Company, to be admitted to the Official List and to trading on the main market of the London Stock Exchange on issue. The application has been made in respect of:

34,388,129 Ordinary Shares of US$0.10 each to be used in connection with the Company's 2007 Long Term Stock Incentive Plan

3,158,168 Ordinary Shares of US$0.10 each to be used in connection with certain performance warrants granted to executive officers of the Company in connection with the closing of the Company's IPO completed on June 27th, 2007; and

2,090,000 Ordinary Shares of US$0.10 each in respect of certain warrants issued by the Company on June 8th, 2007.

The Ordinary Shares, when issued, will rank pari passu with the existing Ordinary Shares of the Company.

For information please contact:

Tethys Petroleum Limited
Sabin Rossi
Vice President Investor Relations

Office: +1 416 572 2065
+1 416 572 2201 (FAX)

info@tethyspetroleum.com

Web: http://www.tethyspetroleum.com

Mobile site: m.tethyspetroleum.com