Duyuru • Jun 19
Union Jack Oil Provides Update on Crossroads Well in Garvin County Oklahoma Union Jack Oil plc announced that, further to the Company's announcement on 15 May 2026, the Company is providing an update on the Crossroads well, Garvin County, Oklahoma USA. Union Jack holds a 43% interest in this well. The Crossroads well encountered good hydrocarbon shows at several levels from the Hoxbar down to the Basal McLish intervals. Four intervals with production potential were perforated and tested. Following testing the well has been deemed non-commercial and will be plugged and abandoned in due course. Duyuru • Jun 16
Reabold Resources Plc (AIM:RBD) proposed to acquire Union Jack Oil plc (AIM:UJO). Reabold Resources Plc (AIM:RBD) proposed to acquire Union Jack Oil plc (AIM:UJO) on June 1, 2026.
The transaction is subject to consummation of due diligence investigation. Union Jack shareholders should take no action at this time.
Jen Clarke, Richard Hail and Matthew Johnson of SP Angel Corporate Finance LLP acted as financial advisor for Union Jack Oil plc. Nicholas Barnett, Luke Kanczes and Jon Fitzpatrick of Gneiss Energy Limited acted as financial advisor for Union Jack Oil plc. Duyuru • Jun 04
Union Jack Oil plc Announces the Resignation of Graham Bull as A Non-Executive Director Effective 3 June 2026 Union Jack Oil plc announced the resignation of Graham Bull as a Non-Executive Director of the Company effective 3 June 2026. Mr. Bull will continue to undertake technical duties for the Company. Mr. Bull cited the detrimental effect attacks on the Board from certain media organizations has had on him and his family in his decision to resign. Duyuru • May 27
Union Jack Oil plc, Annual General Meeting, Jun 26, 2026 Union Jack Oil plc, Annual General Meeting, Jun 26, 2026. Location: the george white suite, the bristol hotel, prince street, bs1 4qf, bristol United Kingdom Duyuru • May 16
Union Jack Oil plc Announces Update on Crossroads Well in Garvin County Oklahoma Union Jack Oil plc announced a positive update on the Crossroads Well, located in Garvin County, Oklahoma USA. Union Jack holds a 43% interest in this well. Crossroads drilled on budget to Target Depth of 4,600 feet. Electric logs have been acquired and several zones of interest and test intervals have been identified. Production casing will be run and cemented. The technical team at Reach Oil and Gas Company Inc., the Operator, has informed Union Jack that the evaluation and testing will begin in mid-June. The Crossroads well encountered good hydrocarbon shows at several levels from the Hoxbar down to the Basal McLish intervals. Based on a petrophysical evaluation of the downhole logs, four intervals with production potential will be tested. These intervals are the Middle McLish, Basal McLish, Cisco and Hoxbar Sandstones. Duyuru • Apr 18
Union Jack Oil plc Announces Update on Crossroads Well Southern Oklahoma USA Union Jack Oil plc announced that, following the update on 8 April 2026, Reach Oil and Gas Company Inc. has informed the company that there has been a short delay to the spud date for the Crossroads well, located in Southern Oklahoma, USA as a result of rig maintenance requirements. The Operator is confident that the well will be spudded before the end of April 2026. Duyuru • Apr 09
Union Jack Oil plc Provides Crossroads Well Southern Oklahoma USA Update Union Jack Oil plc announced that Reach Oil and Gas Company Inc. has informed the Company that the Crossroads well, located in Southern Oklahoma, USA will be spudded on or around 16 April 2026. Union Jack currently holds a 43% interest. The Company's share of the drilling costs have already been funded. Crossroads will penetrate a large, 100 acre structure in the prolific Oil Creek Sand, Estimated recoverable resource by the Operator over multiple target zones of 1,670,000 barrels of oil gross, Crossroads is a large four-way dip closed structure mapped on 3D seismic. Duyuru • Jan 12
Union Jack Oil plc Announces Board Changes, Effective 12 January 2026 Union Jack Oil plc announced the appointment of Dr. Donald Zac Phillips ("Zac") and John Americanos as Non-Executive Directors to the Board of Union Jack with immediate effective 12 January 2026. Dr Phillips, who will join the Board as an independent Non-Executive Director, is a senior energy executive and advisor with extensive experience in the oil and gas sector, advising on asset evaluation, project development and corporate strategy. He is currently a Director of TomCo Plc and provides oil and gas advisory services to investment banks through his company Oil and Gas Advisors Limited. Zac has previously worked for companies such as BP, Chevron, DB Petroleum, Merrill Lynch and ING Barings. Dr Phillips is a chemical and petroleum engineer, holding a Masters in Petroleum Engineering and a PhD in Chemical Engineering. He is also a Member of the Institute of Chemical Engineers, a Member of the Society of Petroleum Engineers and a Member of the American Association of Petroleum Geologists. Zac has been providing the Board with independent evaluation support for a number of years. Mr. Americanos, who will join the Board as a Non-Executive Director, is a Chartered Certified Accountant (FCCA) and a founder and Director of John Alexander Ltd. which focuses on the provision of accountancy services to businesses and sole traders. John also has significant experience in UK and international property development. The Company also announces that Craig Howie's office as a Director of the Company has been vacated by a resolution of the Board with immediate effective 12 January 2026. Dr Donald Zac Phillips, aged 53, currently holds and has held in the prior five years the following directorships: Oil & Gas Advisors Limited, TomCo Plc, Birkdale Consultants Limited, Birkdale Energy Limited, and OGA Capital Limited. John Alec Americanos, aged 62, currently holds and has held in the prior 5 years the following directorships: John Alexander Ltd, Americo Ltd, Americo 2022 Ltd, Property Global Management Ltd, DJM Properties Ltd, and John Alexander Management Services Ltd. Duyuru • Nov 06
Union Jack Oil plc Provides an Update on the Sark Well, Located in Central Oklahoma, USA Union Jack Oil plc announced that, further to the Company's announcement of 24 September 2025, the Company is providing an update on the Sark well ("Sark"), located in Central Oklahoma, USA. Union Jack holds a 53% interest in Sark. Sark was drilled to a Total Depth of 5,391 feet and the Prue interval was highlighted on electric logs as hydrocarbon bearing following evaluation. Temporary production facilities were installed and a 30-day test programme was undertaken. The production test of the Prue Sandstone failed to produce commercial hydrocarbons. Post well analysis indicates the Sark well encountered a valid structural closure, however, the trap was subsequently breached. Duyuru • Sep 24
Union Jack Oil plc Provides an Update on the Sark Well, Located in Central Oklahoma, USA Union Jack Oil plc provided an update on the Sark well ("Sark"), located in Central Oklahoma, USA. Union Jack currently hold a 60% interest in Sark. Sark was drilled to a Total Depth of 5,391 feet. The Prue interval was highlighted on electric logs as hydrocarbon bearing following evaluation. The Prue interval was perforated from 4,586 to 4,600 feet. During swabbing oil was recovered. Temporary production facilities are being installed and Sark will undergo a 30-day test programme, commencing early October 2025. Results from the test programme will be reported on completion. Duyuru • Aug 09
Union Jack Oil plc Provides Operations Update on West Newton Union Jack Oil plc provided the following update on West Newton, including initial plans for early monetisation of gas production through a new cryptocurrency mining operation. Union Jack holds a 16.665% working interest in PEDL183, that incorporates the West Newton gas discoveries and is operated on behalf of the Joint Venture partners by Rathlin Energy (UK) Ltd. ("Rathlin"). Rathlin has conducted a feasibility study and evaluated the potential for an early development and monetisation strategy, using gas to be produced from the existing discovery wells to generate on-site electricity to power cryptocurrency mining activities. Rathlin, on behalf of the Joint Venture partnership which also includes Reabold Resources plc, has entered into a non-binding Letter of Intent ("LOI") with a Texas-based company, 360 Energy Inc. (" 360 Energy") to design a Bitcoin mining solution at West Newton, subject to regulatory and third-party approvals. The Joint Venture partners believe that cryptocurrency mining offers an innovative and significant near-term value generating opportunity, providing early production and cash flow in advance of any planned full gas field development decision Bitcoin Mining Evaluation. Rathlin, along with its Joint Venture partners, has been evaluating ways of generating additional value through early production schemes, ahead of any longer-term full gas field development. In particular, Rathlin has been looking at development concepts that would co-locate gas-powered generators and cryptocurrency mining equipment at the West Newton A and B sites, which would be fuelled by the natural gas produced at those locations. On behalf of the Joint Venture partnership, Rathlin has entered into a non- binding LOI with 360 Energy, a natural gas offtake and monetisation provider, headquartered in Austin, Texas, USA. Under the terms of the LOI, both parties will work to scope, design and subject to regulatory and third- party approvals, deploy 360 Energy's proven In-Field Computing ("IFC") technology, designed to convert natural gas produced at West Newton to power on-site data centres, generating revenues from Bitcoin production. Whilst at an early conceptual stage, preliminary economic estimates indicate that cryptocurrency mining could deliver very attractive returns. The LOI envisages the IFC initially being deployed at the West Newton A site, converting natural gas from the WNA-2 well into Bitcoin, subsequently being expanded to encompass other discoveries. Duyuru • Jul 23
Union Jack Oil plc has completed a Follow-on Equity Offering in the amount of £2 million. Union Jack Oil plc has completed a Follow-on Equity Offering in the amount of £2 million.
Security Name: Ordinary shares
Security Type: Common Stock
Securities Offered: 40,000,000
Price\Range: £0.05
Security Features: Attached Warrants
Transaction Features: Subsequent Direct Listing Duyuru • Jul 02
Union Jack Oil plc Announces Resumption of Production At Keddington Oilfield Union Jack Oil plc announced that following major site upgrades during 2024 and 2025, production has recommenced at the Keddington Oilfield. During June 2025, Keddington produced a total of 992 barrels of oil over 23 days of timed pumped production averaging 10.4 hours per day with an average flow-rate of 43 barrels per day gross during the period. The newly installed equipment and facilities are working well and continue to be fine-tuned to optimise production.
Union Jack holds a 55% interest in Keddington. Duyuru • May 19
Union Jack Oil plc, Annual General Meeting, Jun 27, 2025 Union Jack Oil plc, Annual General Meeting, Jun 27, 2025. Location: the george white suite, the bristol hotel, prince street, bs1 4qf, bristol United Kingdom Duyuru • Mar 04
Union Jack Oil plc Announces Positive Update on the Testing of the Moccasin 1-13 Well, Pottawatomie County, Oklahoma, USA Union Jack Oil plc announced, further to the RNS dated 25 February 2025, a positive update on the testing of the Moccasin 1-13 well ("Moccasin"), located in Pottawatomie County, Oklahoma, USA. Union Jack holds a 45% working interest in this well. Reach Oil & Gas Company Inc. ("Reach"), the Operator, holds the remaining 55% working interest. The primary objective, the 1st Wilcox formation was perforated, tested and confirmed as a significant oil producer, free flowing under natural pressure, with no formation water present and minimal associated gas. Initial open hole average flow rate over several test periods and a number of days was recorded at 25.88 barrels of oil per hour equating to 621 barrels of oil per day. Moccasin is currently being evaluated under highly restricted flow using various choke sizes and has produced over 140 barrels per day of light crude oil with an API of 32 degrees, under a 13/64 choke (approximately 0.2 of an inch). During this evaluation phase, Moccasin will be further restricted with a smaller choke to monitor pressure to determine the production rate for maximum ultimate oil recovery. The installation of permanent production facilities, comprising oil storage tanks, separator and flowlines is complete and oil sales have commenced. Moccasin confirms the trapping of hydrocarbons in multiple zones within the structure. Two other zones, the Red Fork and the Bartlesville Sandstones to be perforated and evaluated in due course. Moccasin drill and completion costs have already been funded from the Company's cash resources. Moccasin, now declared a commercial discovery, was drilled to a Total Depth of 5,690 feet to test a dip and fault closed structure, mapped from 3D seismic, downthrown on the west side of the Wilzetta fault. Moccasin was an untested structural prospect with secondary targets in the Pennsylvanian Sands. The Moccasin structure is a compressive feature, associated with the regional Wilzetta Fault. This strike-slip fault was active through the Ordovician to early Carboniferous periods and is responsible for several large oil accumulations. The Woodford Shale, the main source for light oil across the region is present within the Moccasin structure and between the primary reservoir targets. Duyuru • Feb 25
Union Jack Oil plc Announces Positive Update on the Testing of the Moccasin 1-13 Well Union Jack Oil plc announced, further to the RNS dated 29 January 2025, a positive update on the testing of the Moccasin 1-13 well ("Moccasin"), located in Pottawatomie County, Oklahoma, USA. Union Jack holds a 45% working interest in this well. Reach Oil & Gas Company Inc. ("Reach"), the Operator, holds the remaining 55% working interest. Moccasin has been declared a commercial discovery; Moccasin was drilled to a Total Depth of 5,690 feet to test a dip and fault closed structure, mapped from 3D seismic, downthrown on the west side of the Wilzetta fault; Several intervals were highlighted on electric logs as hydrocarbon bearing following evaluation; The primary target was perforated, tested and confirmed as a significant oil producer with no formation water present; Initial oil flows and log interpretation indicate excellent reservoir permeability with oil recovery rates of over 40% to be expected; Light oil with minimal associated gas recovered; The installation of permanent production facilities has commenced; Moccasin confirms the trapping of hydrocarbons in multiple zones within the structure; Test programme ongoing with two other zones to be perforated and evaluated in due course;Moccasin drill and completion costs have already been funded from the Company's cash resources. Duyuru • Jan 29
Union Jack Oil plc Announces Positive Update on the Moccasin 1-13 Well, Pottawatomie County, Oklahoma, USA Union Jack Oil plc announced a positive update on the Moccasin 1-13 well, located in Pottawatomie County, Oklahoma, USA. Union Jack holds a 45% working interest in this well. Moccasin drilled on budget to Target Depth of 5,690 feet. Electric logs have been acquired and several zones of interest and test intervals have been identified. Production casing has been run and cemented. The technical team at Reach Oil and Gas Company Inc., the Operator, have informed Union Jack that evaluation and testing will begin on or around 3 February 2025. Moccasin drill and completion costs have already been funded from the Company`s cash resources. Moccasin was an untested 3D seismic supported Hunton and Wilcox structure with secondary targets in Pennsylvanian Channel Sands and Base Pennsylvanian Unconformity Sand. The Moccasin structure is a compressive feature, associated with the regional Wilzetta Fault. This strike-slip fault was active through the Ordovician to early Carboniferous periods and is responsible for several large oil accumulations. The Woodford Shale, the main source for light oil across the region is present within the Moccasin structure and between the primary reservoir targets. In the area of the Moccasin well, a deviation in the fault has caused compressive forces forming numerous dome and fault structures which have led to proven oilfields, such as the adjacent productive North-East Shawnee and North-West Redhill fields. Duyuru • Nov 26
Union Jack Oil plc Announces Positive Drilling Update in Respect of the Taylor 1-16 Well Union Jack Oil plc announced a positive drilling update in respect of the Taylor 1-16 well (Taylor), located in Seminole County, Oklahoma, USA, in which Union Jack holds a 45% working interest. The Taylor well was drilled to a Total Depth of 4,577 feet and electric logs were acquired. The main objective for this well, the Hunton Limestone (Hunton) interval, was encountered at 4,168 feet and is confirmed to be hydrocarbon-bearing and appears highly porous and permeable. Production casing has been run and cemented and the rig released. The technical team at Reach Oil and Gas Company Inc., the Operator, is currently planning the completion programme which is expected to commence in early December 2024. Two other potential secondary intervals were observed, the Cromwell Sand and Misener Sand. These intervals will be evaluated at a later date. Duyuru • Oct 30
Union Jack Oil plc Announces Spudding of Taylor-1 Well, Oklahoma, USA Union Jack Oil plc announced that it has been informed by the Operator, Reach Oil and Gas Company Inc. ("Reach") that the spudding of the Taylor-1 well ("Taylor"), located in Seminole County, Oklahoma, USA is expected on or around 31 October 2024. Union Jack holds a 45% working interest in this well. The Taylor-1 well is an untested 3D seismic supported Hunton Remnant prospect with secondary targets in the Misener and Wilcox sands. Wilcox structures to the north and the east of Taylor were prolific in 1920s, producing in the thousands of barrels of oil per day. Historically, there have been several regional, high-profile fields such as the Bowlegs field that produced 195 million barrels of oil from the Hunton, Wilcox and Misener reservoirs. Reach estimates the geological chance of success to be 40%. Taylor will be followed as soon as possible by the drilling of the Moccasin well ("Moccasin") in which Union Jack hold a 45% working interest. Moccasin is an untested 3D seismic supported Hunton and Wilcox structure with secondary targets in Pennsylvanian Channel Sands and Base Pennsylvanian Unconformity Sand. The Moccasin structure is a compressive feature, associated with the regional Wilzetta Fault. This strike-slip fault was active through the Ordovician to early Carboniferous periods and is responsible for several large oil accumulations. The Moccasin structure lies close to the Woodford Shale, the main source for light oil across the region. In the area of the Moccasin well, a deviation in the fault has caused compressive forces forming numerous dome and fault structures which have led to proven oilfields, such as the adjacent North-East Shawnee and North-West Redhill fields that have produced more than 6 million barrels of oil. Reach assesses a high chance of finding movable hydrocarbons in the Base Pennsylvanian Sands and an approximate 50% chance of success in other target zones. Taylor and Moccasin drilling and completion costs are being funded from the Company`s existing cash resources. Duyuru • Sep 16
Union Jack Oil plc Announces Wressle Receipt of Planning Approval for Further Development Union Jack Oil plc announced that planning consent has been received from North Lincolnshire Council for the further development of the Wressle well site. The approved works will include extending the existing site to accommodate the drilling of two new wells, construction of gas processing facilities and an underground gas pipeline to connect Wressle to the local gas distribution network. The Wressle field is located in onshore licences PEDL180 and PEDL182, situated on the western margin of the Humber Basin, North Lincolnshire. Union Jack holds a 40% interest in the Wressle development. Duyuru • Jul 18
Union Jack Oil plc Announces Positive Drilling Update in Respect of the Andrews 2-17 Well, Located in Seminole County, Oklahoma, United States Union Jack Oil plc announced a positive drilling update in respect of the Andrews 2-17 well, located in Seminole County, Oklahoma, United States in which Union Jack holds a 45% working interest. Further to the spud announcement of 10 July 2024, the Andrews 2-17 well was drilled to a Total Depth of 4,850 feet. The main objective for this well, the Hunton Limestone, is confirmed to be present and was penetrated at approximately 4,180 feet (Measured Depth), showing promoted gas readings, good oil and gas shows, stain and fluorescence from top to bottom of the interval and is hydrocarbon bearing as interpreted from the wireline logs. Completion and production testing of the Andrews 2-17 well is scheduled to commence within the next 14 days. The Hunton Limestone is one of the main hydrocarbon reservoirs in Oklahoma and is unconformably overlain by the main oil-prone source rock, the prolific Woodford Shale. Drilling and completion costs have already been paid for from the Company's cash resources. Duyuru • Jul 10
Union Jack Oil plc Announces Spudding of Andrews 2-17 Well Union Jack Oil plc reported, further to the company's announcement dated 11 June 2024, that it has been informed by the Operator, Reach Oil & Gas Company Inc. ("Reach") that the Andrews 2-17 well, located in Seminole County, Oklahoma, USA, has been spudded. Union Jack hold a 45% working interest in the Andrews 2-17 well. Andrews 2-17 well has an Operator estimated geological chance of success of circa 80% · Approximate eight-day drilling period to a depth of circa 4,700 feet. · Completion time is swift; approximately eight days including perforating and flow-back if successful. This up-dip (located up the slope) offset well to Andrews 1-17 is expected to encounter a similar reservoir above the oil/water contact seen in that commercial discovery well. On success, the 2-17 well will share common production facilities with the Andrews 1-17, thereby lowering costs and optimising project economics. Union Jack paying pro-rata 45% share of well costs - no promote or back charges. Drilling and completion costs of circa USD 340,000 net, already paid from the Company's existing cash resources. The target for this well is the Hunton Limestone, one of the main hydrocarbon reservoirs in Oklahoma. The Hunton Limestone is unconformably overlain by the main oil-prone source rock, the Woodford Shale and is in an excellent position for the migration of oil. Primary oil recovery is expected to be by solution gas drive with any gas recovered to surface being sold into the local network. Reach is an accredited operator in the USA, owning and operating oil and gas production facilities in Seminole and Pottawatomie Counties in Oklahoma. All prospects are generated by Reach which owns modern seismic data acquisition equipment, supplied by a UK based company Stryde Limited. 
