Suncor Energy Responds to Cyber Security Incident

Calgary, Alberta--(Newsfile Corp. - June 25, 2023) - Suncor (TSX: SU) (NYSE: SU) has experienced a cyber security incident. The company is taking measures and working with third-party experts to investigate and resolve the situation, and has notified appropriate authorities.

At this time, we are not aware of any evidence that customer, supplier or employee data has been compromised or misused as a result of this situation.

While we work to resolve the incident, some transactions with customers and suppliers may be impacted.

Legal Advisory - Forward-Looking Information
This news release contains certain forward-looking information and forward-looking statements (collectively referred to herein as "forward-looking statements") and other information based on Suncor's current expectations, estimates, projections and assumptions that were made by the company in light of information available at the time the statement was made. Forward-looking statements in this news release include references to the potential impact of this cyber incident on Suncor's business. Forward-looking statements and information are not guarantees of future performance and involve a number of risks and uncertainties, some that are similar to other oil and gas companies and some that are unique to Suncor. Suncor's actual results may differ materially from those expressed or implied by its forward-looking statements, so readers are cautioned not to place undue reliance on them.

Suncor's Annual Information Form, Annual Report to Shareholders and Form 40-F, each dated March 6, 2023, Suncor's Report to Shareholders for the First Quarter of 2023 dated May 8, 2023, and other documents it files from time to time with securities regulatory authorities describe the risks, uncertainties, material assumptions and other factors that could influence actual results and such factors are incorporated herein by reference. Copies of these documents are available without charge from Suncor at 150 6th Avenue S.W., Calgary, Alberta T2P 3E3; by email request to invest@suncor.com; by calling 1-800-558-9071; or by referring to suncor.com/FinancialReports or to the company's profile on SEDAR at sedar.com or EDGAR at sec.gov. Except as required by applicable securities laws, Suncor disclaims any intention or obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Suncor Energy is Canada's leading integrated energy company. Suncor's operations include oil sands development, production and upgrading; offshore oil and gas; petroleum refining in Canada and the U.S.; and the company's Petro-Canada retail and wholesale distribution networks (including Canada's Electric Highway™, a coast-to-coast network of fast-charging electric vehicle stations). Suncor is developing petroleum resources while advancing the transition to a low-emissions future through investment in power, renewable fuels and hydrogen. Suncor also conducts energy trading activities focused principally on the marketing and trading of crude oil, natural gas, byproducts, refined products and power. Suncor has been recognized for its performance and transparent reporting on the Dow Jones Sustainability index, FTSE4Good and CDP. Suncor's common shares (symbol: SU) are listed on the Toronto Stock Exchange and the New York Stock Exchange.

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For more information about Suncor, visit our web site at suncor.com or follow us on Twitter @Suncor.

Media inquiries:
833-296-4570
media@suncor.com

Investor inquiries:
800-558-9071
invest@suncor.com

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/171281