16 May 2022

Pantheon Resources plc

Rig Contract Executed & Investor Presentation

Pantheon Resources plc ("Pantheon" or "the Company"), the AIM listed oil and gas company with a 100% working interest in all of its oil projects spanning c. 153,000 acres adjacent and near to transportation and pipeline infrastructure on the Alaska North Slope, is pleased to announce the following updates.

Rig Contracted for Alkaid #2

Pantheon has formally executed contracts for the Nabors 105AC drill rig to drill the Alkaid #2 well, scheduled to spud in July 2022. If successful, Pantheon will commence a long term production test and truck and sell the produced oil to a nearby North Slope facility. The Alkaid #2 well has three objectives (from shallowest to deepest);

i.      To appraise the shallower Shelf Margin Deltaic horizon, which management believes contains a Contingent Resource of 2.6 billion barrels Oil in Place and 404 million barrels recoverable resource;

ii.     To commence a long-term production test of the primary objective Alkaid horizon, which the independent expert engineering firm Lee Keeling & Associates estimates to contain 76.5 million barrels of oil Contingent Resources (recoverable); and

iii.    To evaluate the extent of the oil column within the Alkaid horizon immediately below the total depth at Alkaid #1. Alkaid #1 was terminated within the oil zone due to flooding of the Dalton Highway at the time. Based on seismic and other analytical analysis, the Company believes the Alkaid horizon's oil zone is substantially thicker than reported to date, offering the potential for additional resource growth.

The Alkaid #2 well is a step out from the Alkaid #1 discovery well, which was drilled as a vertical test well and flow tested 108 barrels of oil per day through a six foot perforated interval. Alkaid #2 will be drilled horizontally to maximise flow rates and is expected to substantially exceed those seen at Alkaid #1. This will be discussed further in the Company's Investor Presentation broadcast at 5:00 pm BST (British Summer Time) today, details are provided below.

Approval of Plan of Operations

In addition to securing the rig contract, Pantheon has received Plan of Operations approval from the State of Alaska, Department of Natural Resources on the Alkaid projects. Along with permits from the Corps of Engineers and the North Slope Borough, all necessary permits and authorizations to begin construction of the Alkaid #2 gravel pad and driveway(s) have now been secured and earthwork operations are expected to commence imminently.

Investor Presentation on Modelling Horizontal Well Performance

Monday 16 May at 5:00 pm BST

Following Pantheon's recent technical webinar, the Company has decided to give an Investor Presentation to provide greater detail on the modelling of production performance scaling from vertical to horizontal wells. The Company will broadcast a short presentation at 5:00 pm BST today. A recording will be uploaded to the Pantheon website once available.

The presentation is open to all shareholders and interested parties. Those wishing to participate can view via the link below:

https://www.share-talk.com/pantheon-resources-aim-panr-modelling-performance-from-vertical-to-horizontal-wells-may-2022/

Joining the management team are Michael Duncan, VP of Operations, and Ed Duncan, Consultant Geologist. The presentation will provide insight into Pantheon's reservoir data, including permeability and porosities, and methodology for modelling horizontal well performance. This analysis follows the successful drilling and testing operations at Theta West and Talitha #A which concluded in March 2022.

On the Alaska North Slope, exploration and appraisal wells are typically drilled vertically given their primary objective is to obtain data to help analyse, understand and define the resource and future development potential. Production wells are drilled horizontally, designed to maximise target reservoir contact and therefore potential production volumes.

A copy of the PowerPoint presentation will be uploaded to Pantheon's website at  www.pantheonresources.com shortly beforehand.

Jay Cheatham, CEO of Pantheon Resources, commented, "Following our successful winter season, we are moving ahead by securing the rig and necessary permits for the construction of the pad at Alkaid #2 planned for this summer. We are on track to spud in July, allowing Pantheon to commence a long-term production test and, importantly, begin generating revenue for the Company, as well as conducting potentially impactful appraisals of the Shelf Margin Deltaic and the deeper portion of the Alkaid horizon.

"I also look forward to speaking virtually with shareholders at today's short investor presentation. After our 2.5 hour webinar a few weeks ago, we're pleased to again give shareholders more technical information on this exceptional project portfolio."

Bob Rosenthal, Technical Director, commented, "Following the reported flow rates in certain horizons tested in the vertical Theta West and Talitha test wells, we are pleased to share with investors our approach to modelling possible horizontal outcomes. This analysis is extremely important given our 100% working interest Theta West, Talitha and Greater Alkaid projects are estimated by management to contain over 23 billion barrels of Oil in Place and over 2.3 billion barrels of recoverable resource in those horizons that flowed oil."

- ENDS -

Further information:

Notes to Editors

Pantheon Resources plc is an AIM listed oil and gas company focused on several large projects located on the North Slope of Alaska ("ANS"), onshore USA where it has a 100% working interest in 153,000 highly prospective acres with over 23 billion barrels estimated oil in place and over 2 billion barrels of oil recoverable. A major differentiator to other ANS projects is its close proximity to transport and pipeline infrastructure which offers a significant competitive advantage to Pantheon, allowing for materially lower capital costs and far more rapid development times. The Group's stated objective is to create material value for its stakeholders through oil exploration, appraisal and development activities in high impact, highly prospective conventional assets in the USA, a highly established region for energy production with infrastructure, skilled personnel and low sovereign risk. All operations are onshore USA, with drilling costs materially below that of offshore wells.

For further information on Pantheon Resources plc, see the website at: www.pantheonresources.com

In accordance with the AIM Rules - Note for Mining and Oil & Gas Companies - June 2009, the information contained in this announcement has been reviewed and signed off by Robert Rosenthal, a qualified Petroleum Geologist, who has over 40 years' relevant experience within the sector.

Cautionary Statement: Certain statements and estimates contained in this announcement carry an associated risk of accuracy as such statements and estimates are based upon information available at the time of making such statements. Actual results could differ materially from expectations set out in such statements. Among other factors, this could be as a result of changes in economic, market, geological and political factors, the success of future drilling and geological success, the risk of future drilling changes in the regulatory environment and other government actions, fluctuations in the price of oil and exchange rates, and business and operational risk management.