2023

Calgary, Alberta, September 28, 2023: High Arctic Energy Services Inc. (TSX: HWO) “High Arctic” or the “Corporation” provides an update on the contemplated reorganization of the Corporation, including the associated tax efficient $38.2 million return of capital, the Papua New Guinea focused business spin-out to shareholders, refocus of the Canadian business and an update on its Papua New Guinea (“PNG”) operations. The Corporation has received feedback from shareholders and is working with its advisors on the reorganization plan to incorporate key elements of the shareholder feedback. The High Arctic board has reserved its final decision to proceed with the reorganization until these matters and ongoing strategic review have been addressed to their satisfaction, requisite regulatory approvals have been received, and the materials are ready to present to shareholders. The Corporation cautions readers that there is no certainty that the reorganization will proceed in the format previously announced, or at all. In PNG, Rig 103 has continued to operate reliably since returning to work and in the process our crews have passed through 7 years and 3.5 million work hours of recordable incident free operations. Activity is nearing the halfway point of the four currently committed wells for our primary customer, under the three-year operations and management contracts that mature in August 2025. High Arctic observes that the Papua-LNG partners have pushed back guidance for the target final investment decision on the project website https://papualng.com.pg/ to “early 2024”. We have also observed that the project planning involves the creation of road access to the development well sites and as a result will likely not specifically require heli-portable drilling rigs. High Arctic was involved in drilling four of the Antelope field appraisal wells with our heli-portable drilling rigs. While High Arctic has specialist PNG drilling knowledge that we strongly believe is critical to successful well delivery, there is no guarantee that our rigs will be deemed suitable for, or that we will be contracted to conduct the Papua-LNG development drilling at the Elk / Antelope fields. Forward-Looking Statements This press release contains forward-looking statements. When used in this document, the words “may”, “would”, “could”, “will”, “intend”, “plan”, “anticipate”, “believe”, “seek”, “propose”, “estimate”, “expect”, and similar expressions are intended to identify forward-looking statements. Such statements reflect the Corporation’s current views with respect to future events and are subject to certain risks, uncertainties and assumptions. Many factors could cause the Corporation’s actual results, performance or achievements to vary from those described in this press release. Should one or more of these risks or uncertainties materialize, or should assumptions underlying forward-looking statements prove incorrect, actual results may vary materially from those described in this press release as intended, planned, anticipated, believed, estimated or expected. Specific forwardlooking statements in this press release include, but are not limited to, statements pertaining to the following:  the High Arctic board’s final decision to proceed with the reorganization,  the level of certainty that the reorganization will proceed in the format previously announced, or at all,  that Rig 103 will drill the four currently committed wells for our primary customer, and any wells following those,  Papua-LNG partners target final investment decision on the project of “early 2024”,  whether High Arctic’s heli-portable drilling rigs will be suitable for the Papua-LNG project, and  whether High Arctic will be contracted to conduct the Papua-LNG development drilling. The Corporation’s actual results could differ materially from those anticipated in these forward-looking statements as a result of the risk factors set forth above and elsewhere in this press release. The forward-looking statements contained in this press release are expressly qualified in their entirety by this cautionary statement. These statements are given only as of the date of this press release. The Corporation does not assume any obligation to update these forward-looking statements to reflect new information, subsequent events or otherwise, except as required by law. About High Arctic High Arctic is an energy services provider. High Arctic is a market leader in Papua New Guinea providing drilling and specialized well completion services and supplies rental equipment including rig matting, camps, material handling and drilling support equipment. In western Canada, High Arctic provides pressure control equipment on a rental basis to exploration and production companies. For further information, please contact: Mike Maguire Chief Executive Officer 1.587.318.3826 1.800.668.7143 High Arctic Energy Services Inc. Suite 2350, 330–5th Avenue SW Calgary, Alberta, Canada T2P 0L4 website: haes.ca Email: info@haes.ca 230928 – High Arctic Provides Reorganization and PNG Update – Copy

Calgary, Alberta, August 11, 2023: High Arctic Energy Services Inc. (TSX: HWO) “High Arctic” or the “Corporation” announces today that Mr. Lonn Bate has been appointed Interim Chief Financial Officer, effective August 17, 2023. Mr. Bate initially joined the Corporation in March 2023 in a consulting capacity. Mr. Bate is a Chartered Professional Accountant, CA with over 25 years of broad financial leadership including substantial periods in senior executive roles of public and private junior energy and energy services companies. Mr. Bate’s experience extends to international as well as the Canadian energy sector. He brings extensive knowledge in financial stewardship, strategic planning and analysis, equity and debt financing, company reorganizations, mergers and acquisitions, and consolidating global finance teams. Mike Maguire, High Arctic CEO stated: “I am pleased to welcome Mr. Bate to the High Arctic leadership team as Interim CFO. Lonn takes on a key role during a pivotal period for High Arctic as we contemplate a reorganization of the corporation, including the sale of the corporation’s Papua New Guinea focused business to shareholders and a refocus of the Canadian business.” As announced on May 23, 2023 Mr. Lance Mierendorf, High Arctic’s Chief Financial Officer for the past two years, tendered his resignation with effect August 17. Mike Maguire further commented: “On behalf of the Board of Directors and the team here at High Arctic, we wish Lance well in his career pursuits and extend thanks for the professionalism and dedication during his tenure with the company.” About High Arctic High Arctic is an energy services provider. High Arctic is a market leader in Papua New Guinea providing drilling and specialized well completion services and supplies rental equipment including rig matting, camps, material handling and drilling support equipment. In western Canada, High Arctic provides pressure control equipment on a rental basis to exploration and production companies. For further information, please contact: Mike Maguire Chief Executive Officer 1.587.318.3826 1.800.668.7143 High Arctic Energy Services Inc. Suite 2350, 330–5th Avenue SW Calgary, Alberta, Canada T2P 0L4 website: haes.ca Email: info@haes.ca 230811 – High Arctic Announces Interim CFO Placement_Final

Calgary, Alberta, August 9, 2023: High Arctic Energy Services Inc. (TSX: HWO) “High Arctic” or the “Corporation” announces today that Daniel Bordessa has tendered his resignation as a director effective immediately. Mr. Bordessa has been a director of the Corporation since April 2011. Mr. Bordessa sits on the Board’s Audit, QHSE, Remuneration and Executive Committees. The Board will replace Mr. Bordessa on these committees from among the four remaining directors. Mr. Bordessa is a partner of Cyrus Capital Partners, L.P. (“Cyrus”). Cyrus is the investment manager to certain funds who are the sole shareholders of FBC Holdings Sàrl (“FBC”). FBC owned 21,916,634 common share or 45.0% of the issued and outstanding common shares of High Arctic as of July 20, 2023. The Corporation has been informed by Cyrus that they continue to support High Arctic and its Board of Directors in their efforts to maximize value for all shareholders through the contemplated reorganization. Michael Binnion, High Arctic’s Chairman stated: “On behalf of the board I would like to thank Dan for his dedication and commitment to High Arctic over the past twelve years. Dan has played an important role in the evolution of High Arctic and we wish him all the best. His departure provides the rest of the board the opportunity to independently contemplate imminent key decisions, in the interest of all shareholders.” About High Arctic High Arctic is an energy services provider. High Arctic is a market leader in Papua New Guinea providing drilling and specialized well completion services and supplies rental equipment including rig matting, camps, material handling and drilling support equipment. In western Canada, High Arctic provides pressure control equipment on a rental basis to exploration and production companies. For further information, please contact: Mike Maguire Chief Executive Officer 1.587.318.3826 1.800.668.7143 High Arctic Energy Services Inc. Suite 2350, 330–5th Avenue SW Calgary, Alberta, Canada T2P 0L4 website: haes.ca Email: info@haes.ca High Arctic Announces D Bordessa Resignation_Final

Calgary, Alberta, July 31, 2023: High Arctic Energy Services Inc. (TSX: HWO) “High Arctic” or the “Corporation” intends to release its 2023 second quarter results on Thursday, August 3, 2023 after markets close and has scheduled a conference call to begin at 10:00 am MT (12:00 pm ET) on Friday, August 4, 2023. The conference call dial in numbers are 1-800-806-5484 or 416-340-2217 and the participant passcode is 8364241#. Participants joining from outside North America can find International dial-in numbers at: https://www.confsolutions.ca/ILT?oss=7P1R8009525114. An audio recording of the conference call will be available within 24 hours on High Arctic’s website and will remain available until September 30, 2023. The Corporation’s Second Quarter Financial Statements and Management’s Discussion & Analysis will be posted to High Arctic’s website and SEDAR after the results are released. About High Arctic High Arctic is an energy services provider. High Arctic is a market leader in Papua New Guinea providing drilling and specialized well completion services and supplies rental equipment including rig matting, camps, material handling and drilling support equipment. In western Canada High Arctic provides pressure control equipment on a rental basis to exploration and production companies. For further information, please contact: Mike Maguire Chief Executive Officer 1.587.318.3826 1.800.668.7143 High Arctic Energy Services Inc. Suite 2350, 330–5th Avenue SW Calgary, Alberta, Canada T2P 0L4 website: haes.ca Email: info@haes.ca 230731 – Q2 2023 Results Release ANNOUNCEMENT w conf call

Calgary, Alberta, June 19, 2023: High Arctic Energy Services Inc. (TSX: HWO) “High Arctic” or the “Corporation” has entered into an asset purchase agreement with a private Canadian energy services company to sell its Canadian nitrogen pumping assets for gross proceeds of $1.35 million in cash, before transaction costs (the “Nitrogen Transaction”). The Nitrogen Transaction results in the transfer of High Arctic’s dedicated nitrogen assets and support employees to the Buyer. High Arctic retains associated working capital and estimates a modest gain on sale over equipment net asset carrying value. Mike Maguire, High Arctic CEO, commented “The Nitrogen Transaction builds on our strategy to free up capital employed in service lines where shareholder returns have proven substandard. Our nitrogen service line has a small market presence and service industry consolidation carries merit for all stakeholders. We believe the Nitrogen Transaction sets our employees up for success as they transition to a larger team wherein their safety, service acumen and operational skill set them up for career success.” “Post-closing, High Arctic’s investment in Canada is comprised of its 42% equity investment in Team Snubbing, its equipment rental business and certain industrial real estate holdings. The rentals business is primarily focused on pressure control equipment and marketed under the HAES Rental Services branding. The high margin, low operating cost rentals business provides a platform to grow to scale and positions the Corporation to utilize its substantive $130 million non-capital tax loss carryforwards. ” High Arctic’s Board of Directors and Management acknowledge the robust team of employees affected and thank them for their dedicated service and commitment to operational excellence at High Arctic. ” The Nitrogen Transaction is subject to customary commercial closing conditions and is expected to close on July 21, 2023. The net proceeds will increase liquidity as the Corporation furthers its recently announced intention to undertake a return of capital to shareholders and reorganize. About High Arctic High Arctic is an energy services provider. High Arctic is a market leader in Papua New Guinea providing drilling and specialized well completion services and supplies rental equipment including rig matting, camps, material handling and drilling support equipment. In western Canada High Arctic provides pressure control equipment on a rental basis to exploration and production companies. For further information, please contact: Mike Maguire Chief Executive Officer 1.587.318.3826 1.800.668.7143 High Arctic Energy Services Inc. Suite 2350, 330–5th Avenue SW Calgary, Alberta, Canada T2P 0L4 website: haes.ca Email: info@haes.ca

Calgary, Alberta, May 23, 2023: High Arctic Energy Services Inc. (TSX: HWO) “High Arctic” or the “Corporation” announces today that Lance Mierendorf, High Arctic’s Chief Financial Officer, has tendered his resignation and plans to step down effective August 17, 2023. Mr. Mierendorf has been with High Arctic for the past two years and, in addition to solidifying financial reporting, has been instrumental in strategic transactions undertaken by the Corporation during his tenure. The timing of Lance’s departure corresponds with the release of second quarter 2023 earnings and substantial progress towards the recently announced intention to reorganize the Corporation and effect a return of capital to shareholders subject to a Special Meeting of Shareholders by the end of September, 2023. Considering these developments, a recruitment process will be initiated to appoint a successor. About High Arctic High Arctic is an energy services provider. High Arctic is a market leader in Papua New Guinea providing drilling and specialized well completion services and supplies rental equipment including rig matting, camps, material handling and drilling support equipment. In western Canada, High Arctic provides nitrogen services and pressure control equipment on a rental basis to exploration and production companies. For further information, please contact: Mike Maguire Chief Executive Officer 1.587.318.3826 1.800.668.7143 High Arctic Energy Services Inc. Suite 2350, 330–5th Avenue SW Calgary, Alberta, Canada T2P 0L4 website: haes.ca Email: info@haes.ca 230523- High Arctic Announces Resignation of CFO