MUSD (unless Fourth Third Fourth Full Full
specifically quarter quarter quarter year year
stated) 2018 2018 2017 2018 2017
Net daily 11,898 11,857 11,726 11,767 12,261
production from
Oman,
Blocks 3&4 before
government take
(bbl)
Net barrels 569,177 567,258 556,729    2,233,323    2,308,342
produced, after        
government take
(bbl)
Net barrels sold, 542,596 579,360 617,577    2,163,148    2,316,404
after government        
take (bbl)

Average selling 77.9 74.3 53.9 70.5 51.8
price per barrel,
USD

Revenue and other 44.4 42.3 30.1 157.3 119.3
income
EBITDA 30.8 30.1 19.7 106.6 78.2
Operating result 19.1 18.5 9.9 60.7 38.4
Result for the 19.9 18.2 11.0 62.2 33.1
period
Earnings per 0.58 0.53 0.32  1.82 0.97
share (after
dilution), USD

Net cash 73.1 63.7 42.0 73.1 42.0
Investments in  16.2 12.6 8.2  55.8 40.4
oil and gas
properties

Letter to shareholders

Dear Friends and Investors,

We are delighted to report record financial numbers for both the fourth quarter and the full year 2018. Our revenues and other income increased 32 percent to MUSD 157.3 and our EBITDA increased 36 percent and amounted to MUSD 106.6. We are equally delighted to report a 2P reserve replacement ratio of 177 percent for 2018 - the highest for three years and the 7thconsecutive year of increasing our 2P reserves. So our main asset, Blocks 3&4 onshore Oman certainly continues to confirm its growth potential!

Production has been very stable both for the quarter and for the year, although delays in the development of the discoveries from 2017 has pushed our expected production increase into the first quarter of 2019.

The fourth quarter saw intense activity on Block 49 where several hundred kilometres of seismic was collected on time. Processing is ongoing and over the next couple of months, processed data will be ready for interpretation and mapping.

In December 2018, we attempted to increase our presence in Oman further by entering into an agreement to acquire two percent of the Mukhaizna field. Unfortunately, Tethys Oil was informed by the seller that partner pre-emption rights had been exercised, preventing us from completing the transaction. This slight setback does not, however, diminish our ambition to grow in Oman and elsewhere.

Year end 2018 reserves and the appraisal/development programme

The discoveries we made in 2017 continue to have a great impact on our reserves, contingent resources and our reserve replacement. In 2018, we produced 4.3 million barrels and we added 7.6 million barrels of 2P reserves. The additions and revisions include maturation of Contingent Resources to reserves and upside revisions of the Farha South, Shahd and Erfan fields.

The appraisal of the Ulfa and Samah discoveries has been one of the central components of the work programme during 2018. Appraisal and development of the Ulfa, Samah and Erfan fields will continue in 2019, now with the Ulfa production facilities fully up and running. With the continued appraisal programme, and a remaining resource base of 2C Contingent Resources of 12.5 million barrels, we are in a good position to continue to replace and increase our reserves in 2019.

Exploration

A significant amount of new seismic data was acquired in 2018 - 2,750 km23D seismic on Blocks 3&4 and 253 km2of 3D and 299 km of 2D on Block 49. But with so much focus on the appraisal of our 2017 discoveries we did not see much exploration drilling for most of 2018, apart from the Tibyan discovery in the first quarter 2018. The exploration programme did not get under way until late in the year and currently two wells that spudded in the fourth quarter are in progress. In 2019 we will see the results from these wells as well as additional seismic and the drilling of at least three new exploration wells. All new seismic data will guide our exploration drilling on our blocks in the years to come. So 2019 looks like it could be quite an active year from the exploration perspective.

Oil price environment

We started the year with an average selling price of USD 63.7 per barrel for the first quarter, which increased quarter by quarter during the year. We achieved an average selling price per barrel of USD 77.9 for the fourth quarter of 2018, which is the highest oil price we have achieved since 2014. Towards the end of the year, international prices fell about 40 percent down to about USD 50 per barrel. As Tethys Oil's oil sales price is calculated with an effective two-month lag to spot prices, we will see the lower prices in our sales during the first quarter 2019. In January 2019 the prices have rebounded somewhat. However, what we have shown in previous years is that Tethys Oil is profitable even at lower oil prices.

Fourth quarter in focus

We produced 1.1 million barrels of oil in the fourth quarter of 2018, corresponding to 11,898 barrels of oil per day, which was slightly higher than the annual average. Our average selling price in the fourth quarter amounted to USD 77.9 per barrel, an increase of five percent compared to the third quarter 2018. Following the higher oil price combined with a stable production, our quarterly results are again on par with our best quarters in 2014. For the quarter, we report revenues and other income of MUSD 44.4, up five percent compared with the third quarter. Our EBITDA amounted to MUSD 30.8, up two percent compared with the third quarter. During the fourth quarter 2018, cash flow from operations amounted to MUSD 29.3 and investments in oil and gas amounted to MUSD 16.2. Our net cash position increased from MUSD 63.7 to MUSD 73.1. The result for the period amounted to MUSD 19.9, up nine percent compared with MUSD 18.2 in the third quarter.

Outlook

The annual average net production from the company's existing operations on Blocks 3&4 in Oman during 2019 is expected to amount to between 12,000-13,000 barrels of oil per day.

Reflecting the strong operational and financial position of Tethys Oil, the board of directors is proposing an ordinary dividend of SEK 2.00 per share. Further, in line with Tethys Oil's long-term capital structure target, the board of directors is proposing an extraordinary distribution of SEK 6.00 per share.

Under current market conditions and production assumptions, Tethys Oil expects its 2019 investments for the company's existing operations on Blocks 3&4 and Block 49 in Oman to amount to MUSD 50-55. Focus of the work programme in Blocks 3&4 is continued development and appraisal drilling, upgrading of production facilities and other infrastructure, new seismic acquisition and drilling of exploration wells. Focus on Block 49 is to continue the exploration programme. The new seismic data acquired in 2018 will be processed and interpreted in order to further define possible oil traps and to enhance the understanding of the deeper parts of the block in general. Preparations for exploration drilling will be carried out.

So, to sum up our plans for 2019: we still have over 12 million barrels of Contingent Resources to mature to Reserves; we expect the results of three to five exploration wells on Blocks 3&4; and on Block 49 prospect maturation will get seriously under way. Not to mention anything else that may come our way. So stay with us - it will be an exciting year!

Stockholm in February 2019

Magnus Nordin
Managing Director

For further information, please contact:

Magnus Nordin, managing director, phone: +46 8 505 947 00

Jesper Alm, CFO, phone: +46 8 505 947 00

Conference call

Date: 12 February 2019

Time: 10.00 CET

To participate in the conference call, you may choose one of the following options:

Link to webcast: https://edge.media-server.com/m6/p/d7v8nv9y

To participate via phone, please call:

Sweden: +46 8 505 564 74
Switzerland: +41 225 675 541
UK: +44 203 364 5374
North America: +1 855 753 2230

This information is information that Tethys Oil AB (publ) is obliged to make public pursuant to the EU Market Abuse Regulation and the Securities Markets Act. The information was submitted for publication, through the agency of the contact person set out above, at 7:30 CET on 12 February 2019.