Suncor Energy Inc 6-K, filed Oct 21, 2021

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

SUNCOR ENERGYINC.

(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:

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ¨

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.

EXHIBIT INDEX

EXHIBIT 99.1

News Release dated October 20, 2021, Suncor Energy to release third quarter 2021 financial results

FOR IMMEDIATE RELEASE

Suncor Energy to release third quarter 2021 financial results

Calgary, Alberta, Oct. 20, 2021 – Suncor will release its third quarter financial results on Oct. 27, 2021 before 8:00 p.m. MT (10:00 p.m. ET).

A webcast to review the third quarter will be held on Oct. 28 at 7:30 a.m. MT (9:30 a.m. ET). Representing management will be Mark Little, president and chief executive officer and Alister Cowan, chief financial officer. A question and answer period with analysts will follow brief remarks from management. Trevor Bell, vice president, Investor Relations will host the call.

Please note, telephone lines are limited and reserved for those who intend to ask a question.

To participate in the conference, go to suncor.com/webcasts.

If you are an analyst or media and would like to participate in the Q&A period:

An archive of the webcast will be available on suncor.com/webcasts.

Suncor Energyis Canada's leading integrated energy company, with a global team of over 30,000 people. Suncor's operations include oil sands development,production and upgrading, offshore oil and gas, petroleum refining in Canada and the US, and our national Petro-Canada retail distributionnetwork (now including our Electric Highway network of fast-charging EV stations). A member of Dow Jones Sustainability indexes, FTSE4Goodand CDP, Suncor is responsibly developing petroleum resources, while profitably growing a renewable energy portfolio and advancing thetransition to a low-emissions future. Suncor is listed on the UN Global Compact 100 stock index. Suncor's common shares (symbol: SU) arelisted on the Toronto and New York stock exchanges.

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For more information about Suncor, visit our website at suncor.com, follow us on Twitter @Suncor or Living our Purpose.