[6-K] SUNCOR ENERGY INC Current Report (Foreign Issuer)

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

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

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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

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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.
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Date: ​ ​ November 4, 2025	​	By: ​ ​ /s/ “Shawn Poirier”
​	​	Shawn Poirier Assistant Corporate Secretary

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EXHIBIT INDEX

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Exhibit	​	Description of Exhibit
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99.1	​	News Release dated November 4, 2025, Suncor Energy reports second quarter 2025 results ​
99.2	​	Report to Shareholders for the second quarter ended November 4, 2025

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