Suncor Energy Inc 6-K, filed May 20, 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

SUNCORENERGY 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:

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 May 19, 2021, Suncor Energy to hold Investor Day

FOR IMMEDIATE RELEASE

Suncor Energy to hold Investor Day

Calgary, Alberta (May 19, 2021)– Suncor will host an Investor Day online at 8:00 a.m. MT (10:00 a.m. ET) on May 26, 2021.

During the presentation, Suncor will share its medium-term corporate outlook, provide an update on the progress to date of its $2B of free funds flow generation as well as discuss other strategic objectives.

Participants will need access to the internet for the full duration of the meeting. The event will consist of a two-hour presentation, followed by a one-hour question and answer session.

To register for the event, visit this link or visit https://www.suncor.com/en-ca/investor-centre/presentations-and-key-dates. The event will be archived for 90 days.

Suncor Energy is Canada's leadingintegrated energy company, with a global team of over 30,000 people. Suncor's operations include oil sands development, production andupgrading, offshore oil and gas, petroleum refining in Canada and the US, and our national Petro-Canada retail distribution network (nowincluding our Electric Highway network of fast-charging EV stations). A member of Dow Jones Sustainability indexes, FTSE4Good and CDP,Suncor is responsibly developing petroleum resources, while profitably growing a renewable energy portfolio and advancing the transitionto a low-emissions future. Suncor is listed on the UN Global Compact 100 stock index. Suncor's common shares (symbol: SU) are listedon the Toronto and New York stock exchanges. For more information about Suncor, visit our web site at suncor.com, follow us onTwitter @Suncor.

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