ACADIA REALTY TRUST

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): July 28, 2026

ACADIA REALTY TRUST

(Exact name of registrant as specified in its charter)

411 Theodore Fremd Avenue

Suite 300

Rye, New York 10580

(Address of principal executive offices) (Zip Code)

(914)288-8100

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since 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:

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

Indicate by check mark whether the registrant is an emerging growth company as defined in 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. ☐

On July 28, 2026, Acadia Realty Trust (the “Company”) issued a press release announcing its consolidated financial results for the three and six months ended June 30, 2026. A copy of the press release is attached to this Current Report on Form 8-K as Exhibit 99.1 and incorporated herein by reference.

On the same day, the Company made available supplemental reporting information regarding the financial results, operations and portfolio of the Company as of and for the three and six months ended June 30, 2026. A copy of the supplemental reporting information is attached to this Current Report on Form 8-K as Exhibit 99.2 and incorporated herein by reference.

The information included in this Item 2.02, including the information included in Exhibits 99.1 and 99.2 attached hereto, is intended to be “furnished” pursuant to Item 2.02, and is not deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference into any filing under the Securities Act of 1933, as amended (“Securities Act”) or the Exchange Act, or otherwise subject to the liabilities of Sections 11 and 12 (a)(2) of the Securities Act.

(d) Exhibits

SIGNATURES

Pursuant to the requirements of the Exchange Act, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.