Athabasca Oil Corporation Announces New $500 Million Four-Year Credit Facility and Expanded Duvernay Energy Credit Facility

Athabasca Oil Corporation (TSX: ATH,OTC:ATHOF) ("Athabasca" or the "Company") has closed a new $500 million covenant-based credit facility with the Canadian bank market. The facility has a four-year term to May 2030 and includes annual extension rights. Duvernay Energy has also closed an upsized $75 million reserve-based credit facility. Pro forma for the new facilities, consolidated liquidity is approximately $870 million.

The new credit facilities enhance Athabasca's capital structure with expanded liquidity, enhanced durability and a lower cost of capital. The pro forma capital structure supports the Company's fully funded Thermal Oil growth plan to greater than 60,000 bbl/d by 2030 and the expanded Duvernay Energy capital program announced in the first quarter 2026 results. Athabasca remains committed to maintaining a best-in-class balance sheet as operations increase in scale. As at March 31, 2026, the Company had a $60 million Net Cash position and $290 million of cash.

About Athabasca Oil Corporation

Athabasca Oil Corporation is a Canadian energy company with a focused strategy on the development of thermal and light oil assets. Situated in Alberta's Western Canadian Sedimentary Basin, the Company has amassed a significant land base of extensive, high quality resources. Athabasca's light oil assets are held in a private subsidiary (Duvernay Energy Corporation) in which Athabasca owns a 70% equity interest. Athabasca's common shares trade on the TSX under the symbol "ATH". For more information, visit www.atha.com.

Reader Advisory:

This News Release contains forward-looking information that involves various risks, uncertainties and other factors. All information other than statements of historical fact is forward-looking information. The use of any of the words "anticipate", "plan", "project", "continue", "maintain", "may", "estimate", "expect", "will", "target", "forecast", "could", "intend", "potential", "guidance", "outlook" and similar expressions suggesting future outcome are intended to identify forward-looking information. The forward-looking information is not historical fact, but rather is based on the Company's current plans, objectives, goals, strategies, estimates, assumptions and projections about the Company's industry, business and future operating and financial results. This information involves known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking information. No assurance can be given that these expectations will prove to be correct and such forward-looking information included in this News Release should not be unduly relied upon. This information speaks only as of the date of this News Release. In particular, this News Release contains forward-looking information pertaining to, but not limited to, the following: our strategic plans; our growth plans; and other matters.

Actual results could differ materially from those anticipated in this forward-looking information as a result of the risk factors set forth in the Company's Annual Information Form ("AIF") dated March 4, 2026 available on SEDAR at www.sedarplus.ca, including, but not limited to: weakness in the oil and gas industry; exploration, development and production risks; prices, markets and marketing; market conditions; trade relations and tariffs; climate change and carbon pricing risk; statutes and regulations regarding the environment; regulatory environment and changes in applicable law; gathering and processing facilities, pipeline systems and rail; reputation and public perception of the oil and gas sector; environment, social and governance goals; political uncertainty; state of capital markets; ability to finance capital requirements; access to capital and insurance; abandonment and reclamation costs; changing demand for oil and natural gas products; anticipated benefits of acquisitions and dispositions; royalty regimes; foreign exchange rates and interest rates; reserves; hedging; operational dependence; operating costs; project risks; supply chain disruption; financial assurances; diluent supply; third party credit risk; indigenous claims; reliance on key personnel and operators; income tax; cybersecurity; advanced technologies; hydraulic fracturing; liability management; seasonality and weather conditions; unexpected events; internal controls; evolving corporate governance, sustainability and reporting framework; limitations of insurance; litigation; natural gas overlying bitumen resources; competition; chain of title and expiration of licenses and leases; breaches of confidentiality; new industry related activities or new geographical areas; water use restrictions and/or limited access to water; relationship with Duvernay Energy Corporation; management estimates and assumptions; third-party claims; conflicts of interest; inflation and cost management; credit ratings; growth management; impact of pandemics; ability of investors resident in the United States to enforce civil remedies in Canada; and risks related to our debt and securities. All subsequent forward-looking information, whether written or oral, attributable to the Company or persons acting on its behalf are expressly qualified in their entirety by these cautionary statements.

Non‐GAAP and Other Financial Measures

The "Net Cash" and "Liquidity" supplementary financial measures in this press release do not have standardized meanings which are prescribed by IFRS.

Net Cash

Net Cash is defined as the face value of long-term debt, plus accounts payable and accrued liabilities, plus current portion of provisions and other liabilities plus income tax payable less current assets, excluding risk management contracts.

Liquidity

Liquidity is defined as cash and cash equivalents plus available credit capacity.