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Form 8-K

sec.gov

8-K — SunocoCorp LLC

Accession: 0002089661-26-000053

Filed: 2026-08-10

Period: 2026-08-10

CIK: 0002089661

SIC: 2911 (PETROLEUM REFINING)

Item: Regulation FD Disclosure

Documents

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Act of 1934

August 10, 2026

Date of Report (Date of earliest event reported)

SUNOCOCORP LLC

(Exact name of registrant as specified in its charter)

Texas 001-42928 85-0470977

(State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.)

8111 Westchester Drive, Suite 400

Dallas , Texas 75225

(Address of principal executive offices, including zip code)

(214) 981-0700

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Units Representing Limited Liability Company Interests SUNC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01. Regulation FD Disclosure.

In accordance with General Instruction B.2. of Form 8-K, the following information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

On August 10, 2026, SunocoCorp LLC (NYSE: SUNC) (the “Company”) announced the Company will participate in meetings with members of the investment community at the 2026 Citi Natural Resources Conference on August 11th, 2026, and at the Barclay’s 40th Annual Energy-Power Conference on September 9th, 2026. During these conferences, senior management expects to participate in a series of meetings with members of the investment community, and presentation materials referenced during these meetings will be posted to the Company’s website prior to the investor meetings at http://www.sunocolp.com under “Investor Relations - Webcasts & Presentations.” The Company does not undertake to update the information as posted on its website; however, it may post additional information included in future press releases and Current Reports on Form 8-K, as well as posting its periodic Exchange Act reports.

This report may include certain statements concerning expectations for the future that are forward-looking statements as defined by federal law. Such forward-looking statements are subject to a variety of known and unknown risks, uncertainties, and other factors that are difficult to predict and many of which are beyond management’s control. An extensive list of factors that can affect future results are discussed in the Company’s Annual Report on Form 10-K and other documents filed from time to time with the Securities and Exchange Commission. The Company undertakes no obligation to update or revise any forward-looking statement to reflect new information or events.

SIGNATURE

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 hereunto duly authorized.

SUNOCOCORP LLC

By:

SunocoCorp Management LLC, its managing member

Date: August 10, 2026

By:

/s/ Rick Raymer

Rick Raymer

Vice President, Controller and Principal Accounting Officer

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