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Calgary, Alberta (June 1, 2026) – TheNewswire – Decimus Oil Corp. (“Decimus” or the “Company”) (TSXV:WCSB) is pleased to announce its financial and operating results for the three months ended March 31, 2026. The associated management’s discussion and analysis (“ MD&A ”) and unaudited interim financial statements for the three months ended March 31, 2026, can be found at www.sedarplus.ca and www.decimusoil.com .

The first quarter of 2026 was a period of strong sequential momentum for Decimus, marked by quarter-over-quarter growth in revenue and operating netbacks, lower royalty and capital costs, and continued progress in strengthening the Company’s balance sheet. The Company’s key achievements in the first quarter of 2026 included the following:

• Achieved production of 165 boe/d ( 43 % Oil NGLs) in Q1/26, 12% decrease when compared to 187 boe/d in Q1/25 and a 1% increase when compared to 163 boe/d in Q4/25.  

• Revenue in Q1/26 was $593,423, an 11% increase from Q4/25 revenue of $535,501, due primarily to a 12% increase in combined commodity prices and a 1% increase in production. Oil revenue increased 14% to $487,860, supported by a 16% increase in realized oil prices while oil production remained stable.  

• Royalty expense decreased to $32,766, representing 6% of revenue in Q1/26, compared to $54,915, or 10% of revenue, in Q4/25 and from $77,144 or 9% of revenue in Q1/25.  

• Net production expenses decreased to $474,919 in Q1/26 from $515,891 in Q1/25; however, on a per boe basis, they increased by 4% to $31.89/boe in Q1/26 from $30.61/boe in Q1/25.  

• Operating netbacks more than doubled in Q1/26, increasing to $5.76/boe from $2.78/boe in Q4/25. The increase was driven by a 12% increase in average realized sales, to $39.85/boe in Q1 2026 from $35.68/boe in Q4 2025, as well as a 40% decrease in royalty expenses.  

• Cash flow from operating activities of $83,854 in Q1/26, a 65% decrease compared to Q4/25 cash flow of $239,010 and an 8% increase when compared to $77,816 in Q1/25.  

• Total capital expenditures decreased by 78% in Q1/26 to $35,190 from $157,050 in Q4/25.  

“We are very pleased with the momentum Decimus built during the first quarter of 2026,” said Cameron MacDonald, President & CEO of Decimus. “On a quarter-over-quarter basis we grew revenue by 11%, more than doubled our operating netback, and reduced both royalty and capital costs while holding production essentially flat. Together with the debt settlement and the continued backing of our directors, these results reflect the discipline and confidence we are carrying into the next phase of our Mannville development strategy.”

The following table summarizes the Company’s financial and operating results for the three months ended March 31, 2026.

Selected Quarterly Information

1. Capital Management Measure; See “Non-IFRS Financial Measures, Non-IFRS Financial Ratios and Capital Management Measures” Section of this MDA.  

2. Non-IFRS Financial Ratio; See “Non-IFRS Financial Measures, Non-IFRS Financial Ratios and Capital Management Measures” Section of this MDA.  

Shares for Debt Settlement

The Company further announces that it has entered into definitive agreements with certain arm’s-length creditors to settle certain outstanding indebtedness through the issuance of common shares of the Company (the “ Shares for Debt Transaction ”). As a result, and pursuant to the Shares for Debt Transaction, the Company will settle an aggregate of $59,128.11 of outstanding indebtedness through the issuance of 540,329 common shares of the Company at a deemed price of $0.10 per common share, subject to approval by the TSX Venture Exchange (“ TSXV ”). The indebtedness being settled represents bona fide accrued compensation owing to arm’s length parties of the Company. The Shares for Debt Transaction will be structured in accordance with the policies of the TSXV. The common shares issued pursuant to the Shares for Debt Transaction will be subject to a statutory hold period of four months and one day from the date of issuance, in accordance with applicable securities laws and the policies of the TSXV. Completion of the Shares for Debt Transaction remains subject to final acceptance of the TSXV and the Company believes that the Shares for Debt Transaction will help strengthen its financial position by reducing outstanding liabilities while preserving cash resources.

Directors Loan Transaction

The Company further announces that it has entered into a demand loan agreement with its directors for an aggregate of $126,184 (the “Loans”). The Loans have no prescribed maturity date, are unsecured and bear interest at 10% per annum. The Company expects to use the proceeds of the Loans primarily to satisfy mandatory closure spending requirements established by the Alberta Energy Regulator relating to the abandonment and reclamation of oil and gas properties.

The lenders are the four directors of the Company. The Loans are considered "Related Party Transactions" under Multilateral Instrument 61-101 – Protection of Minority Security Holders in Special Transactions (“MI 61-101”). The Company relied upon the exemptions from the minority shareholder approval and valuation requirements set out in Sections 5.7(1)(a) and 5.5(a), respectively, of MI 61-101.

Additional Information on Decimus can be found on the website and updated Corporate Presentation

Interested investors and other market participants can learn more about the Decimus opportunity by visiting its new website and reviewing the Company’s corporate presentation, available at  www.decimusoil.com   

For further information please contact:

Cameron MacDonald

President & CEO
Phone: (403) 585-9875

Email:  ir@decimusoil.com

About Decimus Oil Corp.

Decimus Oil Corp. is engaged in the acquisition, development and production of oil and gas in the Western Canadian Sedimentary Basin. The Company’s strategy is to build a portfolio of long-term, low-decline, high-netback producing assets with meaningful drilling development and enhanced oil and natural gas recovery upside. Decimus is focused on Mannville development in Southern Alberta, where it is advancing a low-risk acquisition strategy and deploying modern completion techniques to develop underexploited drilling opportunities and unlock significant resource in place.

Forward-looking Information and Statements

The information in this news release contains certain forward-looking statements. These statements relate to future events or our future performance. All statements other than statements of historical fact may be forward-looking statements. Forward-looking statements are often, but not always, identified by the use of words such as "seek", "anticipate", "plan", "continue", "estimate", "approximate", "expect", "may", "will", "project", "predict", "potential", "targeting", "intend", "could", "might", "should", "believe", "would" and similar expressions. These statements involve substantial known and unknown risks and uncertainties, certain of which are beyond the Company's control, including: the impact of the COVID-19 pandemic on the Company's business and operations (and the duration of the impacts thereof); the inability of the Company to meet its commitments on its lands or on the lands it may acquire; the impact of general economic conditions; industry conditions; changes in laws and regulations including the adoption of new environmental laws and regulations and changes in how they are interpreted and enforced; fluctuations in commodity prices and foreign exchange and interest rates; stock market volatility and market valuations; volatility in market prices for oil and natural gas; liabilities inherent in oil and natural gas operations; uncertainties associated with estimating oil and natural gas reserves; changes in income tax laws or changes in tax laws and incentive programs relating to the oil and gas industry; geological, technical, drilling and processing problems and other difficulties in producing petroleum reserves; and obtaining required approvals of regulatory authorities. The Company's actual results, performance or achievement could differ materially from those expressed in, or implied by, such forward-looking statements and, accordingly, no assurances can be given that any of the events anticipated by the forward-looking statements will transpire or occur or, if any of them do, what benefits the Company will derive from them. These statements are subject to certain risks and uncertainties and may be based on assumptions that could cause actual results to differ materially from those anticipated or implied in the forward-looking statements. The forward-looking statements in this news release are expressly qualified in their entirety by this cautionary statement. Except as required by law, the Company undertakes no obligation to publicly update or revise any forward-looking statements. Investors are encouraged to review and consider the additional risk factors set forth in the Company's continuous disclosure documents which are available on SEDAR+ at www.sedarplus.ca

Neither the TSX Venture Exchange nor its Regulation Service Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

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