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6-K

Suncor Energy Inc (SU)

6-K 2025-10-22 For: 2025-10-21
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Added on April 09, 2026

FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a - 16 or 15d - 16 of

the Securities Exchange Act of 1934

For the month of:  October, 2025 Commission File Number:  1-12384

SUNCOR ENERGY INC.

(Name of registrant)

150 – 6th Avenue S.W.

P.O. Box 2844

Calgary, Alberta

Canada, T2P 3E3

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ¨ Form 40-F x

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SUNCOR ENERGY INC.
Date: By:
October 22, 2025 “Shawn Poirier”
Shawn Poirier
Assistant Corporate Secretary

EXHIBIT INDEX

Exhibit Description of Exhibit
99.1 News Release dated October 21, 2025, Suncor Energy to release third quarter 2025 financial results

Exhibit 99.1

News Release

Suncor Energy to release third quarter2025 financial results

Calgary, Alberta (October 21,2025) – Suncor Energy (TSX: SU) (NYSE: SU) will release its third quarter financial results on November 4, 2025 before 5:00 p.m. MT (7:00 p.m. ET).

A webcast to review the third quarter will be held on November 5, 2025 at 7:30 a.m. MT (9:30 a.m. ET). A question and answer period with analysts will follow brief remarks from management.

To listen to the webcast please follow the instructions provided at https://www.suncor.com/en-ca/investors/events-and-presentations. The event will be archived for 90 days.

Suncor Energy is Canada's leadingintegrated energy company. Suncor's operations include oil sands development, production and upgrading; offshore oil production; petroleumrefining in Canada and the U.S.; and the company’s Petro-Canada^TM^ retail and wholesale distribution networks (includingCanada’s Electric Highway^TM^, a coast-to-coast network of fast-charging EV stations). Suncor is developing petroleumresources while advancing the transition to a lower-emissions future through investments in lower emissions intensity power, renewablefeedstock fuels and projects targeting emissions intensity. Suncor also conducts energy trading activities focused primarily on the marketingand trading of crude oil, natural gas, byproducts, refined products and power. Suncor's common shares (symbol: SU) are listed on theToronto and New York stock exchanges.

For more information about Suncor, visit our website at suncor.com.

Media inquiries:

(833) 296-4570

media@suncor.com

Investor inquiries:

invest@suncor.com

Suncor Energy
150 6 Avenue S.W. Calgary, Alberta T2P<br> 3E3
suncor.com