UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 4, 2026

SEAPORT ENTERTAINMENT GROUP INC.

(Exact name of registrant as specified in charter)

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Registrant’s telephone number, including area code: (212) 732-8257

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:

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

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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. ☒

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Item 2.02Results of Operations and Financial Condition.

On November 4, 2026, Seaport Entertainment Group Inc. (the “Company”) issued an earnings press release and a related supplemental disclosure package relating to the Company’s financial results for the quarter and nine months ended September 30, 2026. Copies of the press release and supplemental disclosure package are furnished as Exhibits 99.1 and 99.2, respectively, and are incorporated by reference herein.

The information in Item 2.02 of this Current Report, including Exhibits 99.1 and 99.2, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section. Such information shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, unless it is specifically incorporated by reference therein.

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Item 7.01Regulation FD Disclosure.

On November 4, 2026, the Company issued an earnings press release and a related supplemental disclosure package relating to the Company’s financial results for the quarter and nine months ended September 30, 2026. Copies of the press release and supplemental disclosure package are furnished as Exhibits 99.1 and 99.2, respectively, and are incorporated by reference herein.

The furnishing of these materials is not intended to constitute a representation that such furnishing is required by Regulation FD or other securities laws, or that the materials include material investor information that is not otherwise publicly available. In addition, the Company does not assume any obligation to update such information in the future.

The information in Item 7.01 of this Current Report, including Exhibits 99.1 and 99.2, is being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that Section. Such information shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act or the Exchange Act, unless it is specifically incorporated by reference therein.

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Item 9.01Financial Statements and Exhibits.

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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.

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