GRAND CAYMAN, CAYMAN ISLANDS, Nov 14, 2013 (Marketwired via COMTEX) — Tethys Petroleum Limited CA:TPL -2.86%  UK:TPL -8.78%  (“Tethys” or “the Company”) today announced its third quarter 2013 financial results and gave an update on its operations in Kazakhstan. These figures are headlined by the 2013 EBITDA figure adjusted for share-based payments for the nine months to September 30, 2013 being more than seven times than that achieved in the same period of 2012.

RECENT FINANCIAL HIGHLIGHTS

Nine months 2013 vs. Nine months 2012:

—  EBITDA adjusted for share-based payments of USD9.7 million compared to

USD1.3 million in 2012

—  2013 loss before tax of USD4.5 million (2012: loss of USD15.7 million)

—  2013 loss after tax of USD7.0 million (2012: USD16.8 million)

—  2013 total oil and gas revenues up 15%

The Company reports financial results in accordance with International Financial Reporting Standards (“IFRS”).

Operational Update (Kazakhstan)

AKD08 (“Doto”)

The AKD08 (“Doto”) well has reached a depth of 2,947 metres where the next casing string will be set. Electric logs are being run and hydrocarbon indications have been observed in both the Cretaceous and Jurassic sections whilst drilling and from the wireline logs, although the Cretaceous sands appear not to be as good a quality as observed in the nearby AKD01 Doris discovery well. Such indications, though encouraging, do not necessarily confirm the presence of commercially produceable hydrocarbons. Following logging and setting casing, drilling will continue into the Triassic section which had oil shows in the AKD01 well. After completion of drilling, it is likely that a testing programme will be undertaken. The Doto well is expected to take approximately a further month to reach its planned total depth of 3,500 metres.

AKD09 (“Dexa”)

The AKD09 (“Dexa”) well has reached a depth of 1,366 metres and casing is about to be set before drilling ahead towards the target zone. The Dexa well is expected to take approximately a further month to drill to the planned total depth of 2,400 metres. The well is located to the north-west of the producing Doris field and is designed to target Cretaceous channel sandstone sequences similar to the current major producing unit in the Doris field.

KBD01 (“Kalypso”)

The KBD01 (“Kalypso”) comprehensive testing programme initially on the Permo-Carboniferous interval will commence in mid December. Currently the well is undergoing pre-test operations to conduct a further cementing prior to the main testing programme. The testing programme will involve fracture stimulation of the carbonate interval approximately 4,100 metres below the surface and will take up to one month to complete. Electric logs run over this section and drilling data indicated more than 100 metres of gross potential hydrocarbon bearing zones.

Oil Production

Following continued optimisation of the downhole pumps, production is currently approximately 3,200 barrels of oil per day from the three producing wells.

Shallow Gas Drilling program

The previously announced shallow gas work program is underway and results will be announced in due course.

The full Q3 Results together with a Management Discussion & Analysis have been filed with the Canadian securities regulatory authorities. Copies of the filed documents may be obtained via SEDAR at www.sedar.com or on Tethys’ website at www.tethyspetroleum.com. The summary financial statements are attached to this press release.

The above highlights along with other operational and financial details will be further discussed in a scheduled conference call. Details of the conference call can be found below:

Conference Call:

A conference call will be held at 8:00 AM EST US and Canada and 13:00 PM GMT European time on Friday, November 15, 2013. The North American conference call number is 866-515-2912 and the outside North America conference call number is +1 617-399-5126. The conference call code to use is 99140866. Please call in about 10 minutes before the starting time in order to be patched into the call.

Webcast:

The call is being webcast and can be accessed at:

http://www.media-server.com/m/acs/738b9c96fe1c3c9b77aa2b2948a65377

Tethys is focused on oil and gas exploration and production activities in Central Asia and the Caspian Region with activities currently in the Republics of Kazakhstan, Tajikistan and Uzbekistan. This highly prolific oil and gas area is rapidly developing and Tethys believes that significant potential exists in both exploration and in discovered deposits.

The indications of hydrocarbons from the shows while drilling and the electric log interpretation for the AKD08 (“Doto”) well are not necessarily indicative of the possible recovery of hydrocarbons from that well or of long term performance. Production testing and other evaluation will be required before the Company is able to establish the commercial viability of the well.

This press release contains “forward-looking information” which include statements related to the drilling progress of the AKD08, AKD09 and KBD01 wells. Such forward-looking statements reflect our current views with respect to future events and are subject to certain assumptions, including the assumption that the 30 day periods will be sufficient for drilling the AKD08 and AKD09 wells to depth and the KBD01 testing programme will commence in mid December. These forward looking statements are subject to risks and uncertainties, including the risk that the drilling period for the wells will extend beyond the expected periods and the testing programmes will be delayed or deferred because of operational and geological factors. See our Annual Information Form for the year ended December 31, 2012 for a description of risks and uncertainties relevant to our business, including our exploration activities. The forward looking statements contained herein speak only as of the date of this press release and, unless required by applicable law, the Company undertakes no obligation to publicly update or revise such information, whether as a result of new information, future events or otherwise.

Note on non GAAP measures: “EBITDA adjusted for share based payments” is a non GAAP measure and is defined as Earnings before Interest, Tax, Depreciation, Amortization and share based payments. See the Management Discussion and Analysis for Q3 for a reconciliation to Profit / (Loss).

Please see financials attached