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esrt-20260217false0001541401000155307900015414012026-02-172026-02-170001541401esrt:EmpireStateRealtyOPLPMember2026-02-172026-02-170001541401us-gaap:CommonClassAMember2026-02-172026-02-170001541401esrt:EmpireStateRealtyOPLPMemberesrt:SeriesESOperatingPartnershipUnitsMember2026-02-172026-02-170001541401esrt:EmpireStateRealtyOPLPMemberesrt:Series60OperatingPartnershipUnitsMember2026-02-172026-02-170001541401esrt:EmpireStateRealtyOPLPMemberesrt:Series250OperatingPartnershipUnitsMember2026-02-172026-02-17

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): February 17, 2026

EMPIRE STATE REALTY TRUST, INC.

(Exact Name of Registrant as Specified in its Charter)

Maryland001-3610537-1645259 (State or other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

EMPIRE STATE REALTY OP, L.P.

(Exact Name of Registrant as Specified in its Charter)

Delaware001-3610645-4685158 (State or other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

111 West 33rd Street,

12th Floor New York,New York10120 (Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (212) 687-8700 n/a (Former name or former address, if changed from last report) 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 classTrading Symbol(s) Name of each exchange on which registered

Empire State Realty Trust, Inc. Class A Common Stock, par value $0.01 per shareESRTThe New York Stock Exchange

Empire State Realty OP, L.P. Series ES Operating Partnership UnitsESBANYSE Arca, Inc. Series 60 Operating Partnership UnitsOGCPNYSE Arca, Inc. Series 250 Operating Partnership UnitsFISKNYSE Arca, Inc.

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 2.02.Results of Operations and Financial Condition.

On February 17, 2026, Empire State Realty Trust, Inc. (the “Company” or “we”) issued a press release announcing its financial results for the fourth quarter 2025. The press release referred to certain supplemental information that is available on the Company’s website. The press release and supplemental report are attached hereto 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.

Item 7.01. Regulation FD Disclosure

Fourth Quarter 2025 Earnings As discussed in Item 2.02 above, the Company issued a press release regarding its financial results for the fourth quarter 2025 and made available on its website certain supplemental information relating thereto. The information in Item 7.01 of this Current Report is being furnished and shall not be deemed “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.

Item 9.01.     Financial Statements and Exhibits. (d) Exhibits.

Exhibit No.Description 99.1 Press Release announcing financial results for the fourth quarter 2025

99.2 Supplemental report

104Cover Page Interactive File (the cover page tags are embedded within the Inline XBRL document).

No

esrt-20251029false0001541401000155307900015414012025-10-292025-10-290001541401esrt:EmpireStateRealtyOPLPMember2025-10-292025-10-290001541401us-gaap:CommonClassAMember2025-10-292025-10-290001541401esrt:EmpireStateRealtyOPLPMemberesrt:SeriesESOperatingPartnershipUnitsMember2025-10-292025-10-290001541401esrt:EmpireStateRealtyOPLPMemberesrt:Series60OperatingPartnershipUnitsMember2025-10-292025-10-290001541401esrt:EmpireStateRealtyOPLPMemberesrt:Series250OperatingPartnershipUnitsMember2025-10-292025-10-29

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): October 29, 2025

EMPIRE STATE REALTY TRUST, INC.

(Exact Name of Registrant as Specified in its Charter)

Maryland001-3610537-1645259 (State or other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

EMPIRE STATE REALTY OP, L.P.

(Exact Name of Registrant as Specified in its Charter)

Delaware001-3610645-4685158 (State or other Jurisdiction of Incorporation)(Commission File Number) (I.R.S. Employer Identification No.)

111 West 33rd Street,

12th Floor New York,New York10120 (Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (212) 687-8700 n/a (Former name or former address, if changed from last report) 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 classTrading Symbol(s) Name of each exchange on which registered

Empire State Realty Trust, Inc. Class A Common Stock, par value $0.01 per shareESRTThe New York Stock Exchange

Empire State Realty OP, L.P. Series ES Operating Partnership UnitsESBANYSE Arca, Inc. Series 60 Operating Partnership UnitsOGCPNYSE Arca, Inc. Series 250 Operating Partnership UnitsFISKNYSE Arca, Inc.

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 2.02.Results of Operations and Financial Condition.

On October 29, 2025, Empire State Realty Trust, Inc. (the “Company” or “we”) issued a press release announcing its financial results for the third quarter 2025. The press release referred to certain supplemental information that is available on the Company’s website. The press release and supplemental report are attached hereto 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.

Item 7.01. Regulation FD Disclosure

Third Quarter 2025 Earnings As discussed in Item 2.02 above, the Company issued a press release regarding its financial results for the third quarter 2025 and made available on its website certain supplemental information relating thereto. The information in Item 7.01 of this Current Report is being furnished and shall not be deemed “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.

Item 9.01.     Financial Statements and Exhibits. (d) Exhibits.

Exhibit No.Description 99.1 Press Release announcing financial results for the third quarter 2025

99.2 Supplemental report

104Cover Page Interactive File (the cover page tags are embedded within the Inline XBRL document).

Non-GAAP