Pantheon Resources : Results of Placing

THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN, IS RESTRICTED AND IS NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO OR FROM THE UNITED STATES, CANADA, AUSTRALIA, JAPAN OR THE REPUBLIC OF SOUTH AFRICA OR ANY OTHER JURISDICTION IN WHICH SUCH RELEASE, PUBLICATION OR DISTRIBUTION WOULD BE UNLAWFUL. THIS ANNOUNCEMENT HAS NOT BEEN APPROVED BY THE LONDON STOCK EXCHANGE, NOR IS IT INTENDED THAT IT WILL BE SO APPROVED.

28 July 2017

Pantheon Resources plc ("Pantheon" or "the Company"), the AIM-quoted oil and gas exploration and development company with a working interest of 50%-58% in several conventional projects in Tyler and Polk Counties, onshore East Texas, is pleased to announce the successful completion of the placing announced on 27 July 2017 (the "Placing").

A total of 22,216,100 new Ordinary Shares in Pantheon (the "Placing Shares") were placed,

raising gross proceeds of US$12.5 million at a price of 43 pence per Placing Share.

The Placing Shares will represent, in aggregate, approximately 9.4 per cent. of Pantheon's issued ordinary share capital immediately following Admission. The Placing Shares will, when issued, be credited as fully paid and rank pari passu with the existing Ordinary Shares, including the right to receive all future dividends and distributions, made or paid.

"I am delighted with the overwhelming vote of confidence shown by existing and new institutional shareholders in recognising the potential of our company in a heavily oversubscribed fundraising.

"Whilst we have had a number of operational issues over the past 12 months, we have learned from these and have greatly strengthened our operational capabilities with the appointment of Phillip Gobe to the board, and with the appointment of Sierra Hamilton, one of the world's leading oil and gas technical and engineering consultancies.

"With the newly raised funds, Pantheon will be able to accelerate its drilling programme in both Polk and Tyler counties, as well as enabling it to drill high impact exploration and appraisal wells. The potential of the Eagle Ford sandstone on our acreage has been well documented, however the past 7 months have added an additional layer of excitement with the discovery of the Wilcox, which, if successful, has the potential to be very significant

indeed. Today's announcement demonstrates that our partner Bobby Gray clearly shares this belief, in increasing his own personal interest in the play.

"Cashflow from operations from Polk County are due later this year, and production in Tyler County is anticipated to follow thereafter. I remind shareholders that in a low oil price environment, first principles tell us that it is those assets with low drilling and production costs, in regions of low sovereign risk and abundant infrastructure, that are the most desirable. We look forward to the future with great optimism."

Application will be made for the Admission of 22,379,097 new Ordinary Shares (comprising the Placing Shares and 162,997 new Ordinary Shares issued in lieu of fees) to trading on AIM and it is expected that such Admission will become effective at 8.00 a.m. on 1 August 2017.

The Placing is conditional, inter alia, upon Admission becoming effective and the Placing Agreement becoming unconditional and not being terminated.

Following Admission, the total number of voting rights in the Company will be 237,336,555. No Ordinary Shares are held in treasury. This figure may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change in their interest in, the share capital of the Company under the UK Disclosure and Transparency Rules.

John Bishop Cheatham 3,554,249 116,279 3,670,528 1.55%

Justin Hondris** 1,135,000 46,511 1,181,511 0.50%

*Including the Additional Shares (being the 162,997 new Ordinary Shares which will be issued in lieu of fees)

**Some shares are beneficially owned held by the spouse of the particular director.

Stifel acted as Sole Bookrunner and Panmure Gordon acted as Co-Lead Manager in respect of the Placing.

Definitions used in the announcement of the Company on 27 July 2017 apply to this announcement unless the context requires otherwise.

Justin Hondris, Director, Finance and Corporate Development

Nicholas Rhodes Ashton Clanfield

Atholl Tweedie Tom Salvesen

Ed Westropp James Styles

Neither the contents of the Company's website nor the contents of any website accessible from hyperlinks on the Company's website (or any other website) is incorporated into, or forms part of, this announcement.

This announcement does not constitute, or form part of, a prospectus relating to the Company, nor does it constitute or contain any invitation or offer to any person, or any public offer, to subscribe for, purchase or otherwise acquire any shares in the Company or advise persons to do so in any jurisdiction, nor shall it, or any part of it form the basis of or be relied on in connection with any contract or as an inducement to enter into any contract or commitment with the Company.

The content of this announcement has not been approved by an authorised person within the meaning of the Financial Services and Markets Act 2000 ("FSMA"). This announcement has been issued by and is the sole responsibility of the Company. The information in this announcement is subject to change.

This announcement is not an offer of securities for sale into the United States. The securities referred to herein have not been and will not be registered under the U.S. Securities Act of 1933, as amended (the "Securities Act"), and may not be offered or sold, directly or indirectly, in or into the United States, except pursuant to an applicable exemption from registration. No public offering of securities is being made in the United States. This announcement is not for release, publication or distribution, directly or indirectly, in or into the United States, Australia, Japan, the Republic of South Africa or any jurisdiction where to do so might constitute a violation of local securities laws or regulations (a "Prohibited Jurisdiction"). This announcement and the information contained herein are not for release, publication or distribution, directly or indirectly, to persons in a Prohibited Jurisdiction unless permitted pursuant to an exemption under the relevant local law or regulation in any such jurisdiction.

This announcement is directed only at persons whose ordinary activities involve them in acquiring, holding, managing and disposing of investments (as principal or agent) for the purposes of their business and who have professional experience in matters relating to investments and: (i) if in a member state of the European Economic Area, are, unless otherwise agreed with Stifel, qualified investors within the meaning of article 2(1)(e) of the Prospectus Directive ("Qualified Investors"); and (ii) if in the United Kingdom, fall within: (a) article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Order"); (b) article 49 of the Order; or (d) any other person to whom it may lawfully be communicated (all such persons together being referred to as "Relevant Persons"). This announcement must not be acted on or relied on by persons who are not Relevant Persons. Any investment or investment activity to which this announcement relates is available only to Relevant Persons and will be engaged in only with Relevant Persons.

Stifel is authorised and regulated by the Financial Conduct Authority in the United Kingdom. Stifel is acting solely as nominated adviser, sole bookrunner and co-lead manager exclusively for the Company and no one else in connection with the contents of this announcement and will not regard any other person (whether or not a recipient of this announcement) as its client in relation to the contents of this announcement nor will it be responsible to anyone other than the Company for providing the protections afforded to its clients or for providing advice in relation to the contents of this announcement. Apart from the responsibilities and liabilities, if any, which may be imposed on Stifel by FSMA or the regulatory regime established thereunder, Stifel accepts no responsibility whatsoever, and makes no representation or warranty, express or implied, for the contents of this announcement including its accuracy, completeness or verification or for any other statement made or purported to be made by it, or on behalf of it, the Company or any other person, in connection with the Company and the contents of this announcement, whether as to the past or the future. Stifel accordingly disclaims all and any liability whatsoever, whether arising in tort, contract or otherwise (save as referred to above), which it might otherwise have in respect of the contents of this announcement or any such statement.

Panmure Gordon is authorised and regulated by the Financial Conduct Authority in the United Kingdom. Panmure Gordon is acting solely as co-lead manager exclusively for the Company and no one else in connection with the contents of this announcement and will not regard any other person (whether or not a recipient of this announcement) as its client in relation to the contents of this announcement nor will it be responsible to anyone other than the Company for providing the protections afforded to its clients or for providing advice in