Suncor Energy Inc 6-K, filed Feb 28, 2020

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 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:

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): o

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): o

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.

2

EXHIBIT INDEX

3

EXHIBIT 99.1

News Release dated February 27, 2020, Suncor Energy files annual disclosure documents

FOR IMMEDIATE RELEASE

Suncor Energy files annual disclosure documents

Calgary, Alberta (Feb. 27, 2020) — Suncor has filed its 2019 Annual Report, 2019 Annual Information Form and 2020 Management Proxy Circular.

To view the company’s annual disclosure documents, visit Suncor’s profile on sedar.com or sec.gov or visit Suncor’s website at suncor.com/financialreports.

Shareholders may obtain a copy of Suncor’s 2019 Annual Report free of charge by calling Investor Relations at 1-800-558-9071.

Suncor Energy is Canada’s leading integrated energy company. Suncor’s operations include oil sands development and upgrading, offshore oil and gas production, petroleum refining, and product marketing under the Petro-Canada brand. A member of Dow Jones Sustainability indexes, FTSE4Good and CDP, Suncor is working to responsibly develop petroleum resources while also growing a renewable energy portfolio. Suncor is listed on the UN Global Compact 100 stock index. Suncor’s common shares (symbol: SU) are listed on the Toronto and New York stock exchanges.

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

Media inquiries:

833-296-4570 media@suncor.com

Investor inquiries:

800-558-9071

invest@suncor.com